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Mechanism of Pleiotropic Gene OsSP3 Regulating Root Development in Rice 认领 引用
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作者 YE Jing LIANG Chuyan +3 位作者 ZHAI Rongrong WU Mingming ZHANG Xiaoming YE Shenghai 《Rice science》 SCIE CAS CSCD 2026年第1期1-4,I0001-I0007,共4页
The shift from seedling transplanting to direct-seeding cultivation in rice demands robust root systems for early seedling establishment and yield stability.While the pleiotropic gene OsSP3(also designated TAC4 or SG2... The shift from seedling transplanting to direct-seeding cultivation in rice demands robust root systems for early seedling establishment and yield stability.While the pleiotropic gene OsSP3(also designated TAC4 or SG2)is known to regulate aboveground traits,including tiller angle,grain size,and panicle development,its function in root morphogenesis remains uncharacterized. 展开更多
关键词 pleiotropic gene seedling transplanting OSSP root development direct seeding cultivation root morphogenesis pleiotropic gene ossp also robust root systems
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BcWRKY25-BcWRKY33A-BcLRP1/BcCOW1 module promotes root development for improved salt tolerance in Bok choy 认领 引用 被引量：1
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作者 Huiyu Wang Yushan Zheng +5 位作者 Meiyun Wang Wusheng Liu Ying Li Dong Xiao Tongkun Liu Xilin Hou 《Horticulture Research》 SCIE CSCD 2025年第1期166-177,共12页
Root development is a complex process involving phytohormones and transcription factors.Our previous research has demonstrated that BcWRKY33A is significantly expressed in Bok choy roots under salt stress,and heterolo... Root development is a complex process involving phytohormones and transcription factors.Our previous research has demonstrated that BcWRKY33A is significantly expressed in Bok choy roots under salt stress,and heterologous expression of BcWRKY33A increases salt tolerance and promotes root development in transgenic Arabidopsis.However,the precise molecular mechanisms by which BcWRKY33A governs root development remain elusive.Here,we investigated the role of BcWRKY33A in both root elongation and root hair formation in transgenic Bok choy roots.Our data indicated that overexpression of BcWRKY33A stimulated root growth and stabilized root hair morphology,while silencing BcWRKY33A prevented primary root elongation and resulted in abnormal root hairs morphology.Meanwhile,our research uncovered that BcWRKY33A directly binds to the promoters of BcLRP1 and BcCOW1,leading to an upregulation of their expression.In transgenic Bok choy roots,increased BcLRP1 and BcCOW1 transcript levels improved primary root elongation and root hair formation,respectively.Additionally,we pinpointed BcWRKY25 as a NaCl-responsive gene that directly stimulates the expression of BcWRKY33A in response to salt stress.All results shed light on the regulatory mechanisms governing root development by BcWRKY25-BcWRKY33A-BcLRP1/BcCOW1 module and propose potential strategies for improving salt tolerance in Bok choy. 展开更多
关键词 molecular mechanisms root development transgenic arabidopsishoweverthe bok choy roots heterologous expression salt tolerance transcription factorsour root elongation
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CrWRKY57 and CrABF3 cooperatively activate CrCYCD6;1 to modulate drought tolerance and root development 认领 引用 被引量：1
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作者 Jinxia Mo Xinting Xiong +6 位作者 Zaofa Zhong Lu Liu Ying Xiong Min Wang Wenshan Dai Shaohua Zeng Ting Peng 《Horticulture Research》 SCIE CSCD 2025年第9期255-270,共16页
Drought is a major abiotic stress.WRKYs are one of the largest families of transcription factors(TFs)in plants.The effects of most WRKYs on developmental regulation and drought adaptation in Citrus remain largely uncl... Drought is a major abiotic stress.WRKYs are one of the largest families of transcription factors(TFs)in plants.The effects of most WRKYs on developmental regulation and drought adaptation in Citrus remain largely unclear.Citrus reticulata cv.Sanhu hongju(Sanhu)is a drought-tolerant variety from Jiangxi Province,China.Here,we report a differentially expressed CrWRKY57 gene in drought-treated Sanhu leaves through transcriptome analysis.Its transcriptional expression could be induced by abscisic acid(ABA)treatment and water deficit.Overexpression of CrWRKY57 in lemon(Citrus limon)and tobacco(Nicotiana tabacum)confers enhanced drought tolerance,while RNA interference(RNAi)-mediated silencing in Sanhu increases dehydration susceptibility and reduces root volume.Moreover,virus-induced gene silencing-mediated knockdown of CrWRKY57 in Sanhu reduces primary root length and lateral root number by nearly 50%compared to the control.The results of yeast two-hybrid,co-immunoprecipitation assays and bimolecular fluorescence complementation demonstrate that CrWRKY57 interacts with CrABF3,a key TF in ABA signaling.Silencing ClABF3,its homolog in lemon,also increases drought sensitivity and disrupts root system development.Together,CrWRKY57 and CrABF3 directly activate the promoter of the cell cycle gene CrCYCD6;1 by binding to W-box and ABRE elements,respectively.Furthermore,silencing CrCYCD6;1 in Sanhu also severely reduces primary root length and lateral root number.Collectively,our findings provide a new perspective of CrWRKY57 as a positive player in drought response and highlight the role of the CrWRKY57-CrABF-CrCYCD6;1 module in enhancing drought tolerance by modulating root development. 展开更多
关键词 crwrky gene transcriptional expression developmental regulation transcriptome analysisits sanhu leaves root development drought tolerance abiotic stresswrkys
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The rice OsCBL3-OsCIPK31 module regulates root development via abscisic acid and auxin signaling pathways 认领 引用
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作者 Shicong Yu Shuqin Zheng +8 位作者 Jing Ning Yuanzhu Shi Daiming Guo Ruxian Luo Guizong Xiao Saira Saleem Asif Ali Hao Zhou Xianjun Wu 《The Crop Journal》 SCIE CAS CSCD 2025年第3期694-704,共11页
CALCINEURIN B-LIKE PROTEINS(CBLs)function in osmotic stress responses,root morphogenesis and ion uptake in various plants such as Arabidopsis.However,the roles of Os CBLs in regulating root growth in rice(Oryza sativa... CALCINEURIN B-LIKE PROTEINS(CBLs)function in osmotic stress responses,root morphogenesis and ion uptake in various plants such as Arabidopsis.However,the roles of Os CBLs in regulating root growth in rice(Oryza sativa),whose root morphology and growth environment strongly differ from those of Arabidopsis,are unknown.Here,we demonstrated that Os CBL3 functioned as a calcium sensor to regulate primary and lateral root development in rice.Os CBL3 interacted with Os CIPK31 in vivo and in vitro,and the loss of function of Os CBL3 or Os CIPK31 resulted in shorter roots and diminished lateral root growth.Overexpression of Os CIPK31 compensated for the root growth defects of Os CBL3 knockout mutants.These results demonstrated that the Os CBL3–Os CIPK31 module coordinated root development via the abscisic acid(ABA)and auxin pathways,as ABA inhibitors and low auxin concentrations partially rescued the short-root phenotype of their respective knockout lines.CYCLOPHYLIN 2(Os CYP2),a key factor in lateral root initiation and root growth maintenance,was phosphorylated by Os CIPK31,and knockout of Os CYP2 in Os CIPK31 overexpression lines resulted in a phenotype similar to that of Os CYP2 single knockout lines.Therefore,the Os CBL3–Os CIPK31 module functioned in ABA and auxin signal transduction,ensuring proper root growth.Os CIPK31,activated by Os CBL3,then phosphorylated Os CYP2,which drove primary and lateral root development.These results establish a new module regulating primary and lateral root development in rice. 展开更多
关键词 OsCBL3 OsCIPK31 OsCYP2 Abscisic acid(ABA) Root development
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Phenotypic characteristics and transcriptome of wax gourd embryonic root development under high auxin stress 认领 引用
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作者 Xiaoxin Cheng Jiesheng Hong +6 位作者 Xuling Zhai Baochen Wang Renlian Mo Dian Li Wenrui Liu Jinqiang Yan Biao Jiang 《Vegetable Research》 2025年第1期363-369,共7页
Wax gourd is an important horticultural crop,and auxin plays a crucial role in its growth and development.However,excessive concentrations of auxin can inhibit plant growth.In this study,we investigated the phenotypic... Wax gourd is an important horticultural crop,and auxin plays a crucial role in its growth and development.However,excessive concentrations of auxin can inhibit plant growth.In this study,we investigated the phenotypic characteristics and conducted a transcriptomic analysis of wax gourd embryonic root development under high auxin concentration.Phenotypic observations revealed that as auxin concentration increased,the primary root of the wax gourd radicle became shorter,the number of lateral roots increased,and the length of lateral roots fluctuated.Transcriptomic analysis identified 1,305 differentially expressed genes(DEGs),including 43 genes associated with auxin,as determined by GO and KEGG annotations.We further focused on 10 key genes with significant differential expression and validated the results using qRT-PCR,which aligned with the transcriptomic date.Notably,the expression of ABCB increased with higher IAA concentrations,while PILS7,LAX3,IAA16,FRQ1,and MYBS3 showed significant downregulation at 600μM IAA.Conversely,SAUR32 and SAUR71 were significantly upregulated under the same conditions,while the expression of PIN3 and KRP1 exhibited variable patterns.These findings suggest that these genes are key regulators of wax gourd embryonic root responses to high auxin concentration.This study provides valuable insights into the molecular mechanism underlying auxin-induced stress in wax gourd and lays a foundation for further research on its response mechanisms. 展开更多
关键词 transcriptome embryonic root investigated phenotypic characteristics embryonic root development wax gourd transcriptomic analysis lateral roots phenotypic characteristics
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Overexpression of the peroxidase gene ZmPRX1 increases maize seedling drought tolerance by promoting root development and lignification 认领 引用 被引量：7
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作者 Xiuzhen Zhai Xiaocui Yan +6 位作者 Tinashe Zenda Nan Wang Anyi Dong Qian Yang Yuan Zhong Yue Xing Huijun Duan 《The Crop Journal》 SCIE CSCD 2024年第3期753-765,共13页
Drought is a main abiotic stress factor hindering plant growth,development,and crop productivity.Therefore,it is crucial to understand the mechanisms by which plants cope with drought stress.Here,the function of the m... Drought is a main abiotic stress factor hindering plant growth,development,and crop productivity.Therefore,it is crucial to understand the mechanisms by which plants cope with drought stress.Here,the function of the maize peroxidase gene ZmPRX1 in drought stress tolerance was investigated by measurement of its expression in response to drought treatment both in a ZmPRX1 overexpression line and a mutant line.The higher root lignin accumulation and seedling survival rate of the overexpression line than that of the wild type or mutant support a role for ZmPRX1 in maize drought tolerance by regulating root development and lignification.Additionally,yeast one-hybrid,Dule luciferase and ChIP-qPCR assays showed that ZmPRX1 is negatively regulated by a nuclear-localized ZmWRKY86 transcription factor.The gene could potentially be used for breeding of drought-tolerant cultivars. 展开更多
关键词 Drought tolerance Maize ZmPRX1 Root development Lignin biosynthesis
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Plant growth and their root development after inoculation of arbuscular mycorrhizal fungi in coal mine subsided areas 认领 引用 被引量：23
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作者 Yinli Bi Yanxu Zhang Hui Zou 《International Journal of Coal Science & Technology》 EI CAS 2018年第1期47-53,共7页
Coal mining often cause serious land degradation, soil erosion, and desertification affecting growth of the local vegetation, especially the roots. Arbuscular mycorrhizal fungi （AMF） inoculation is considered a pote... Coal mining often cause serious land degradation, soil erosion, and desertification affecting growth of the local vegetation, especially the roots. Arbuscular mycorrhizal fungi （AMF） inoculation is considered a potential biotechnological tool for mined soil remediation because mycorrhizal fungi could improve plant growth environment, especially under adverse conditions due to their good symbiosis. A field experiment was conducted to study the ecological effects of AMF （Funneliformis mosseae, Rhizophagus intraradices） on the growth of Amygdalus pedunculata Pall. and their root development in the regenerated mining subsidence sandy land. The reclamation experiment included four treatments： inoculation of Funneliformis mosseae （F.m）, inoculation of Rhizophagus intraradices （R.i）, combined inoculation of F.m and R.i and non-inoculated treatment. Root mycorrhizal colonization, plant height, crown width, soil moisture, root morphology and certain soil properties were assessed. The results showed that AMF improved the shoot and root growth of Amygdalus pedunculata Pall., and significantly increased root colonization after 1 year of inoculation. Available phosphorus content, activities of phosphatase as well as electrical conductivity in soil rhizosphere of all the three inoculation treatments were higher than that of the non-inoculated treatment. AMF increased the quantity of bacteria and fungi in soil rhizosphere compared with the non-inoculated treatment. Our study indicates that revegetation with AMF inoculum could influence plant growth and root development as well as soil properties, suggesting that AMF inoculation can be effective method for further ecological restoration in coal mine subsided areas. 展开更多
关键词 Arbuscular mycorrhizal fungi Plant growth Root development Soil remediation Amygdalus pedunculata Pall
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Pseudomonas sp.TK35-L enhances tobacco root development and growth by inducing HRGPnt3 expression in plant lateral root formation 认领 引用 被引量：6
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作者 CAO Yuan-yuan NI Hai-ting +7 位作者 LI Ting LAY Khien-duc LIU Dai-song HE Xiang-yi OU Kang-miao TANG Xin-yun WANG Xiao-bo QIU Li-juan 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2020年第10期2549-2560,共12页
Rhizosphere colonization is a key requirement for the application of plant growth-promoting rhizobacteria(PGPR)as a bioferilizer.Signaling molecules are often exchanged between PGPR and plants,and genes in plants may ... Rhizosphere colonization is a key requirement for the application of plant growth-promoting rhizobacteria(PGPR)as a bioferilizer.Signaling molecules are often exchanged between PGPR and plants,and genes in plants may respond to the action of PGPR.Here,the luciferase luxAB gene was electrotransformed into Pseudomonas sp.strain TK35,a PGPR with an afinity for tobacco,and the labelled TK35(TK35-L)was used to monitor colonization dynamics in the tobacco rhizosphere and evaluate the effects of colonization on tobacco growth and root development.The transcript levels of the hydroxyproline rich glycoprotein HRGPnt3 gene,a lateral root induction indicator,in tobacco roots were examined by qPCR.The results showed that TK35-L could survive for long periods in the tobacco rhizosphere and colonize new spaces in the tobacco rhizosphere following tobacco root extension,exhibiting significant increases in root development,seedling growth and potassium accumulation in tobacco plants.The upregulation of HRGPnt3 transcription in the inoculated tobacco suggested that TK35-L can promote tobacco root development by upregulating the transcript levels of the HRGPnt3 gene,which promotes tobacco seedling growth.These findings lay a foundation for future studies on the molecular mechanism underlying the plant growth-promoting activities of PGPR.Futhermore,this work provided an ideal potential strain for biofertilizer production. 展开更多
关键词 Pseudomonas sp.TK35-L rhizosphere colonization tobacco growth promotion root development HRGPnt3
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The glutamate receptor gene GLR3.3:A bridge of calciummediated root development in poplar 认领 引用 被引量：4
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作者 Yi An Ya Geng +5 位作者 Yu Liu Xiao Han Lichao Huang Wei Zeng Jin Zhang Mengzhu Lu 《Horticultural Plant Journal》 SCIE CAS CSCD 2024年第6期1449-1462,共14页
Poplar is one of the fastest-growing temperate trees in the world and is widely used in ornamental horticulture for shade.The root is essential for tree growth and development and its utilization potential is huge.Cal... Poplar is one of the fastest-growing temperate trees in the world and is widely used in ornamental horticulture for shade.The root is essential for tree growth and development and its utilization potential is huge.Calcium(Ca),as a signaling molecule,is involved in the regulation of plant root development.However,the detailed underlying regulatory mechanism is elusive.In this study,we analyzed the morphological and transcriptomic variations of 84K poplar(Populus alba×P.glandulosa)in response to different calcium concentrations and found that low Ca2+(1 mmol·L-1)promoted lateral root development,while deficiency(0.1 mmol·L-1Ca2+)inhibited lateral root development.Co-expression analysis showed that Ca2+channel glutamate receptors(GLRs)were present in various modules with significance for root development.Two GLR paralogous genes,PagGLR3.3a and Pag GLR3.3b,were mainly expressed in roots and up-regulated under Ca2+deficiency.The CRISPR/Cas9-mediated signal gene(crispr-PagGLR3.3a,PagGLR3.3b)and double gene(crispr-PagGLR3.3ab)mutants presented more and longer lateral roots.Anatomical analysis showed that crispr-PagGLR3.3ab plants had more xylem cells and promoted the development of secondary vascular tissues.Further transcriptomic analysis suggested that knockout of PagGLR3.3a and PagGLR3.3b led to the up-regulation of several genes related to protein phosphorylation,auxin efflux,lignin and hemicellulose biosynthesis as well as transcriptional regulation,which might contribute to lateral root growth.This study not only provides novel insight into how the Ca2+channels mediated root growth and development in trees,but also provides a directive breeding of new poplar species for biofuel and bioenergy production. 展开更多
关键词 Glutamate receptor Calcium Root development Lateral root Poplar
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Molecular regulatory mechanism of tooth root development 认领 引用 被引量：17
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作者 Xiao-Feng Huang Yang Chai 《International Journal of Oral Science》 SCIE CAS CSCD 2012年第4期177-181,共5页
The root is crucial for the physiological function of the tooth, and a healthy root allows an artificial crown to function as required clinically. Tooth crown development has been studied intensively during the last f... The root is crucial for the physiological function of the tooth, and a healthy root allows an artificial crown to function as required clinically. Tooth crown development has been studied intensively during the last few decades, but root development remains not well understood. Here we review the root development processes, including cell fate determination, induction of odontoblast and cementoblast differentiation, interaction of root epithelium and mesenchyme, and other molecular mechanisms. This review summarizes our current understanding of the signaling cascades and mechanisms involved in root development. It also sets the stage for de novo tooth regeneration. 展开更多
关键词 Hertwig＇s epithelial root sheath periodontium root development tooth development
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Genome-wide characterization and identification of root development and stress-related CsMYB36 genes 认领 引用 被引量：2
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作者 Chunhua Wang Xi Shen +7 位作者 Ting Yang Hongxin Yao Xun Peng Cheng Xiong Hagai Cohen Ning Hao Jiajian Cao Tao Wu 《Vegetable Research》 2023年第1期128-138,共11页
Cucumber(Cucumis sativus L.)is an important vegetable crop worldwide.Over the last two decades,there have been many breakthroughs in the understanding of various developmental processes in cucumber,such as shoot branc... Cucumber(Cucumis sativus L.)is an important vegetable crop worldwide.Over the last two decades,there have been many breakthroughs in the understanding of various developmental processes in cucumber,such as shoot branching,sex differentiation,and leaf and fruit size and shape.Roots play an important role in plant growth and development and nutrient absorption,affect crop yield,and participate in the interaction between plants and abiotic stress signals.However,the discovery of essential genes in cucumber roots is very limited.MYB36 is a critical transcription factor for whole development that negatively regulates cell proliferation and thus orchestrates Casparian strip(CS)formation in the root endodermis.To identify CsMYB36 genes with functions in the CS of cucumber and their responses to stress,we described in detail the characteristics of the CsMYB36 gene family in cucumber in this study.A total of 15 CsMYB36 genes were found in the cucumber genome.Through phylogenetic and tissue-specific expression analysis,CsaV3_2G008030.1 and CsaV3_3G036040.1 were selected as candidates regulating CS formation.In addition,all CsMYB36s were found to have anaerobic induction elements,indicating that MYB36 is likely to be highly responsive to anaerobic environments,such as waterlogging.We also identified one potential candidate CsMYB36(CsaV3_1G013560.1)that participates in high-temperature stress responses.This work provides valuable information for understanding the characteristics of the CsMYB36 gene family in cucumber and provides new clues for researchers to study high temperature,waterlogging stress and the formation of CS. 展开更多
关键词 developmental processes stress related genes cucumber cucumis sativus casparian strip root development transcription factor cucumber genome wide characterization
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Effect of Polar Auxin Transport on Rice Root Development 认领 引用 被引量：7
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作者 周大喜 殷珂 +1 位作者 许智宏 薛红卫 《Acta Botanica Sinica》 2003年第12期1421-1427,共7页
Polar auxin transport (PAT) is critical in plant growth and development, especially polar differentiation and pattern formation. Lots of studies have been performed in dicots while relative less in monocots. Using two... Polar auxin transport (PAT) is critical in plant growth and development, especially polar differentiation and pattern formation. Lots of studies have been performed in dicots while relative less in monocots. Using two kinds of PAT inhibitors, 2, 3, 5-triiodobenzoic acid (TIBA) and 9-hydroxyfluorene-9-carboxylic acid (HFCA), it was shown that PAT is important for rice (Oryza sativa L. cv. Zhonghua 11) root development, including elongation of the primary roots, initiation and elongation of lateral roots, and formation of adventitious roots. Inhibition of PAT resulted in the shortened primary roots, less and shortened lateral and adventitious roots. Exogenously supplemented NAA can partially rescue the formation of adventitious roots but not lateral roots, while low concentration of NAA (0.1 mumol/L) could not rescue either of them, suggesting the possible different mechanisms of lateral and adventitious root initiations. Treatment of 30 mumol/L TIBA did not completely inhibit the initiation of lateral roots, and survival capacities of which were demonstrated through cross section experiments revealing the presence of primordial of lateral roots at different stages. Further studies through localized application of PAT inhibitors indicated that auxin flow, transported from coleoptiles to the base, is not only responsible for the auxin contents in stem nodes but also critical for initiation and elongation of adventitious roots. 展开更多
关键词 polar auxin transport (PAT) rice (Oryza sativa) root development adventitious root
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Nanosilver-Promoted Lateral Root Development in Rice is Mediated through Hydrogen Peroxide 认领 引用
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作者 Yu-Jyun Chen Xian-Hao Yang Yun-Yang Chao 《Phyton-International Journal of Experimental Botany》 SCIE 2021年第5期1477-1489,共13页
Nanosilver(10−9 m)refers to particles comprising 20–15,000 silver atoms,exhibiting high stability and specific surface area.At present,nanosilver has been used in agricultural cultivation and production.This study ex... Nanosilver(10−9 m)refers to particles comprising 20–15,000 silver atoms,exhibiting high stability and specific surface area.At present,nanosilver has been used in agricultural cultivation and production.This study examined the effects of nanosilver on growth and development of rice root systems.Study results showed that fresh weight of rice belowground organs and root length both increased significantly by 5%and 25%,respectively,after rice radicles were treated with 2 ppm of nanosilver for three days.However,the H2O2 level reached its peak at 2 days from treatment,but the activities of the antioxidant enzymes CAT,APX,and GR were inhibited by 2 ppm of nanosilver treatment.The results showed that nanosilver treatment inhibited the antioxidant enzyme activity of rice roots.The treatment of rice radicles with 5μM H2O2 promoted root development and the same was observed when nanosilver was used for treatment.Moreover,ascorbic acid(AsA)is a H2O2 scavenger and therefore rice root development was inhibited when AsA was added to rice radicles together with either treatment of nanosilver or H2O2.In summary,nanosilver treatment of rice radicles promoted root growth and development via the regulation of H2O2 and not the O2−pathway. 展开更多
关键词 Rice nanosilver antioxidant enzyme root development H2O2
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Promotion of root development by slightly alkaline pH involves an auxin mediated adaption mechanism 认领 引用 被引量：1
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作者 Xingliang Duan Long Luo +9 位作者 Zhen Wang Wei Wang Chengyu Ye Letian Jia Yuanming Xie Jian Chen Yi Han Yuanda Lv Weicong Qi Wei Xuan 《Soil Science and Environment》 2023年第1期44-55,共12页
The present study performed experiments to identify the superior pH for Arabidopsis root growth base on its development(radical root length and lateral root density);and then approached the mechanism by which optimize... The present study performed experiments to identify the superior pH for Arabidopsis root growth base on its development(radical root length and lateral root density);and then approached the mechanism by which optimized pH primes root development.The results showed that neutral to slightly alkaline pH(7.0−8.0)in medium was the optimum range in which the plant had longer primary roots and denser lateral roots.Auxin reporter DII:VENUS transgenic line cultured in standard(5.8)and slightly alkaline(7.5)pH indicated that in pH 7.5 conditions,there was less fluorescence in the root cap compared to in acidic conditions.Furthermore,the DR5:Luciferase transgenic plant showed pH 7.5 accelerated the auxin oscillation frequency,was 17.83%shorter than that in pH 5.8.Later,a series of mutant germplasms showed slightly alkaline conditions promoting root development were independent from PLT transcript factors,but mainly mediated by auxin transportation.Transcriptomic dynamic analysis showed pH 7.5 conditions could trigger the changes in the pathways of plant hormones signal transduction and ABC transporter.The mutants of the ABC transporter coding genes were thus tested and the results showed that mutant abcb20 could block the slightly alkaline(7.5)pH promoting root development completely,as well as several other mutants blocking it partially. 展开更多
关键词 auxin mediated adaptation Arabidopsis arabidopsis root primary root length root development identify superior ph pH optimized ph
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Bmp9 modulates cell proliferation and intercellular junctions in HERS during tooth root development 认领 引用 被引量：1
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作者 Chang Liu Hongyan Yuan +11 位作者 Jindie Huang Shidian Ran Xiaorui Wei Xingrui Yan Linyu Xue Tong-Chuan He Yuxin Zhang Mengqin Gu Si Wu Fugui Zhang a Wenping Luo Hongmei Zhang 《Genes & Diseases》 SCIE CSCD 2026年第1期463-477,共15页
Tooth formation is a highly orchestrated process that precisely regulates the size and shape of the tooth.During typical tooth development,Hertwig’s epithelial root sheath(HERS)interacts with mesenchymal cells to dir... Tooth formation is a highly orchestrated process that precisely regulates the size and shape of the tooth.During typical tooth development,Hertwig’s epithelial root sheath(HERS)interacts with mesenchymal cells to direct the elongation of the tooth root and the deposition of dentin and cementum,thereby contributing to the formation of a fully developed tooth root.BMP9,a member of the BMP family,plays a significant role in growth,development,and cell differentiation.However,the precise function of BMP9 in dental root development remains unclear,particularly regarding its influence on HERS and odontoblasts.In this study,we utilized a mouse molar model to investigate the role of BMP9 signaling in tooth root development.The tooth formation of Bmp9 knockout(Bmp9-KO)mice and wild-type(WT)littermates was compared.Our findings revealed that Bmp9-KO mice exhibited shorter mandibular first molar roots,wider apical foramina,and thinner dentin compared with WT mice by micro-CT and hematoxylin-eosin staining analysis.Additionally,the results of immunohistochemistry and quantitative PCR indicated that in the absence of Bmp9,odontoblast differentiation and secretory function were compromised.Furthermore,Bmp9 ablation resulted in reduced cell proliferation and increased intercellular junctions within HERS,subsequently impacting root dentin formation and apical foramen closure.This study offers new insights into the regulatory role of BMP9 signaling in odontoblast and HERS function,highlighting its significance in root development and providing potential avenues for future research in tooth root regeneration. 展开更多
关键词 Bone morphogenetic protein 9 Dentinogenesis Hertwig’s epithelial root sheath Odontoblastic differentiation Tooth root development
Polar-localized EXO70G1 regulates root development in Arabidopsis thaliana 认领 引用
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作者 Juan Li Zhendong Liu +9 位作者 Lixue Gong Shuju Zhao Qing Lu Shan Gao Su Jiang Xiaonan Liu Long Ma Guangyou Duan Dayong Cui Shipeng Li 《Journal of Integrative Plant Biology》 SCIE CAS CSCD 2026年第1期96-112,共17页
Cellular asymmetry,which represents a fundamental characteristic of cell polarity,is prominently illustrated by the apical-basal localization of PINFORMED(PIN)auxin efflux carriers in Arabidopsis thaliana.Although the... Cellular asymmetry,which represents a fundamental characteristic of cell polarity,is prominently illustrated by the apical-basal localization of PINFORMED(PIN)auxin efflux carriers in Arabidopsis thaliana.Although the maintenance of PIN polarity at the plasma membrane(PM)relies on endomembrane trafficking,the pivotal factors responsible for recruiting PIN proteins to the PM remain largely unknown.In this study,we discover that EXO70G1displays a polarized distribution at the PM in root cells.Acting as a putative subunit of the exocyst complex,which mediates the tethering of exocytic vesicles to the PM,EXO70G1 exhibits continuous recycling foci at the PM,and its dynamic behavior is akin to that of SEC6 and SEC8.Disruption of EXO70G1 and its homolog EXO70G2 in Arabidopsis reduces auxin accumulation and primary root length.Importantly,the recycling of PIN2 from the brefeldin A(BFA)compartment to the PM is compromised,and the abundance of PIN2 at the PM is reduced in the exo70G1 exo70G2 backgrounds.Interestingly,live-cell imaging reveals that the polarity of EXO70G1 is established during cytokinesis,prior to that of PIN2,and is maintained throughout the subsequent phases of cell elongation and differentiation.When the lipid raft was disturbed,the accumulation of EXO70G1 at the PM decreased.Our findings highlight the crucial role of EXO70G1 in root development by providing positional cues that facilitate the recycling efficiency of PIN2 to the PM. 展开更多
关键词 endomembrane trafficking EXO70 PIN polar localization root development
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Natural variation in ZmHSP20-5 enhances root growth and drought tolerance in maize 认领 引用
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作者 Xiaomin Zhang Houmiao Wang +13 位作者 Mingyue Shen Yuhuan Zhu Hongbin Cheng Ruiji Chen Xiaoyi Yang Yan Li Daojun Li Mengjie Nie Hui Fang Zhigang Li Ming Zhang Yanbin Zhu Zhubing Hu Pengcheng Li 《The Crop Journal》 SCIE CSCD 2026年第2期517-528,共12页
Root architecture is intricately linked to the acquisition of water and nutrients in maize seedlings.Despite its functional importance,few genes controlling root development have been targeted for drought resistance i... Root architecture is intricately linked to the acquisition of water and nutrients in maize seedlings.Despite its functional importance,few genes controlling root development have been targeted for drought resistance in breeding.Here,we performed a genome-wide association analysis to detect genetic variants linked to primary root length(PRL)across 307 inbred lines grown under hydroponic conditions.We identified 28 SNPs significantly associated with 25 candidate genes,accounting for 6.09%-11.07% of the phenotypic variation.Among them,ZmHSP20-5,encoding a cytoplasm-localized small heat shock protein(sHSP)with preferential expression particularly in lateral root primordia emerged as a promising candidate.Functional validation using knockout mutants revealed that disruption of ZmHSP20-5 impaired root architecture,causing reduced primary root elongation,shorter lateral roots,decreased lateral root density,and compromised drought tolerance.Further analysis revealed that InDel-1224 in the ZmHSP20-5 promoter likely contributed to differential gene expression and variation in root development among inbred lines.Evolutionary evidence suggested that the ZmHSP20-5 locus may have undergone selection during domestication,with the favorable ZmHSP20-5In-1224allele increasing in frequency over time.Overall,these findings establish that natural variation in ZmHSP20-5,particularly the ZmHSP20-5In-1224allele,contributes to root growth and drought resistance,providing a valuable genetic resource for the breeding of drought-resistant maize varieties with optimized root systems. 展开更多
关键词 Root development Stress tolerance Drought Natural variation ZmHSP20-5 Maize
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The regulatory mechanism of the low-nitrogen-responsive MADS-box transcription factor PpAGL24 in peach root system development and nitrogen utilization 认领 引用 被引量：1
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作者 Chenwen Yu Huilong Cai +14 位作者 Jiahui Liang Xuelian Wu Haixiang Yu Fengzhen Huang Hongrui Wang Zhe Wang Shihao Fan Robert Samwel Ngomuo Jian Guo Qiuju Chen Yangyang Gao Huaifeng Gao Jingjing Luo Futian Peng Yuansong Xiao 《Fruit Research》 2025年第1期314-323,共10页
Nitrogen critically regulates peach yield formation and fruit quality development through multifaceted physiological mechanisms.In peach production,the problems of large nitrogen input and low Nitrogen Use Efficiency(... Nitrogen critically regulates peach yield formation and fruit quality development through multifaceted physiological mechanisms.In peach production,the problems of large nitrogen input and low Nitrogen Use Efficiency(NUE)are more prominent.Therefore,mining key genes for efficient nitrogen utilization in peach is crucial for improving NUE and reducing nitrogen use.Integrated transcriptomic profiling of peach rootstock'Shannong-1'under low-nitrogen(0.1 mM)treatment identified the MADS-box transcription factor PpAGL24.Functional characterization revealed that PpAGL24 modulates root system architecture and coordinates nitrogen uptake-assimilation pathways,suggesting its pivotal role in enhancing NUE.PpAGL24 expressed in peach roots and overexpressed in Arabidopsis thaliana both resulted in an increased number of lateral roots and higher nitrogen content.Transcriptome sequencing of PpAGL24-overexpressing peach roots revealed its putative regulatory network governing'lateral root development','nitrate assimilation',and'nitrogen metabolism',suggesting its hierarchical coordination in root developmental plasticity and nitrogen remodeling.Dual-luciferase and yeast one-hybrid assays showed that PpAGL24 can activate the transcription of the nitrite reductase-encoding gene PpNiR1.This study reveals a new mechanism by which the MADS-box transcription factor PpAGL24 regulates root growth and nitrogen assimilation in peach trees by modulating the PpNiR1 gene,which provides theoretical support for the improvement of NUE and the reduction of nitrogen inputs in peach orchards. 展开更多
关键词 key genes low nitrogen responsive peach mads box transcription factor nitrogen use efficiency nitrogen utilization ppagl root system development
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Root hairs and lateral root proliferation enhance rice seedling rhizosheath development and ABA accumulation under soil water deficit 认领 引用
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作者 Jing Chen Shin Taketa +1 位作者 Jianchang Yang Ian C.Dodd 《The Crop Journal》 SCIE CAS CSCD 2025年第6期1854-1865,共12页
Rhizosheath development benefits drought resistance in many upland crops.Although water-saving irrigation techniques induce rice rhizosheath formation,how and whether root hairs and different root types influence rice... Rhizosheath development benefits drought resistance in many upland crops.Although water-saving irrigation techniques induce rice rhizosheath formation,how and whether root hairs and different root types influence rice rhizosheath development and shoot water relations at seedling stage in drying soil are unclear.Wild-type(WT)seedlings with root hairs and its root hairless mutant rth2 were watered every 2 or 4 d,with root hair,whole root and shoot traits determined.Less frequent irrigation significantly increased rhizosheath of both genotypes by 14%during the seedling stage.Although root exudates from rth2 adhered 54%more soil than WT,facilitating rhizosheath development,root hairs and 25%greater lateral root proliferation of WT seedlings allowed 48%more rhizosheath especially in older seedlings.Greater root hair length,root hair length density and root hair numberoot surface area on lateral than axial roots especially enhanced WT rhizosheath development.Soil water deficit increased root and leaf ABA concentrations especially in WT seedlings,causing stomatal closure that contributed to increased leaf water potential.In 36-d-old seedlings,10%greater shoot biomass of WT plants than rth2 accompanied 15%higher root and 36%higher foliar ABA concentrations and ultimately lower stomatal conductance.Higher ABA concentrations of WT plants at the same soil moisture suggested root hairs may be important in mediating shoot water status of rice seedlings. 展开更多
关键词 Root system development Rhizosheath Irrigation frequency Leaf water potential Root exudate Soil adhesion Stomatal conductance
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Somatic Embryogenesis Receptor Kinases Control Root Development Mainly via Brassinosteroid-Independent Actions in Arabidopsis thaliana 认领 引用 被引量：23
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作者 Junbo Du Hongju Yin +6 位作者 Shasha Zhang Zhuoyun Wei Baolin Zhao Jinghua Zhang Xiaoping Gou Honghui Lin Jia Li 《Journal of Integrative Plant Biology》 SCIE CAS CSCD 2012年第6期388-399,共12页
Brassinosteroids （BRs）, a group of plant steroidal hormones, play critical roles in many aspects of plant growth and development. Previous studies showed that BRI1-mediated BR signaling regulates cell division and d... Brassinosteroids （BRs）, a group of plant steroidal hormones, play critical roles in many aspects of plant growth and development. Previous studies showed that BRI1-mediated BR signaling regulates cell division and differentiation during Arabidopsis root development via interplaying with auxin and other phytohormones. Arabidopsis somatic embryogenesis receptor-like kinases （SERKs）, as co-receptors of BRI1, were found to play a fundamental role in an early activation step of BR signaling pathway. Here we report a novel function of SERKs in regulating Arabidopsis root development. Genetic analyses indicated that SERKs control root growth mainly via a BR-independent pathway. Although BR signaling pathway is completely disrupted in the serkl bakl bkkl triple mutant, the root growth of the triple mutant is much severely damaged than the BR deficiency or signaling null mutants. More detailed analyses indicated that the triple mutant exhibited drastically reduced expression of a number of genes critical to polar auxin transport, cell cycle, endodermis development and root meristem differentiation, which were not observed in null BR biosynthesis mutant cpd and null BR signaling mutant bril-701. 展开更多
关键词 Brassinolide brassinosteroid RLK root development SERK.
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