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| 1 | WRKY transcription factors in plant responses to stresses显示文摘The WRKY gene family is among the largest families of transcription factors(TFs) in higher plants.By regulating the plant hormone signal transduction pathway,these TFs play critical roles in some plant processes in response to biotic and abiotic stress.Various bodies of research have demonstrated the important biological functions of WRKY TFs in plant response to different kinds of biotic and abiotic stresses and working mechanisms.However,very little summarization has been done to review their research progress.Not just important TFs function in plant response to biotic and abiotic stresses,WRKY also participates in carbohydrate synthesis,senescence,development,and secondary metabolites synthesis.WRKY proteins can bind to W-box(TGACC(A/T)) in the promoter of its target genes and activate or repress the expression of downstream genes to regulate their stress response.Moreover,WRKY proteins can interact with other TFs to regulate plant defensive responses.In the present review,we focus on the structural characteristics of WRKY TFs and the research progress on their functions in plant responses to a variety of stresses. | Jingjing Jiang Shenghui Ma Nenghui Ye Ming Jiang Jiashu Cao Jianhua Zhang | 2017 | Journal of Integrative Plant Biology2017，59，2： | 75 |
| 2 | Proanthocyanidins Inhibit Seed Germination by Maintaining a High Level of Abscisic Acid in Arabidopsis thaliana显示文摘Proanthocyanidins (PAs) are the main products of the flavonoid biosynthetic pathway in seeds, but their biological function during seed germination is still unclear. We observed that seed germination is delayed with the increase of exogenous PA concentration in Arabidopsis. A similar inhibitory effect occurred in peeled Brassica napus seeds, which was observed by measuring radicle elongation. Using abscisic acid (ABA), a biosynthetic and metabolic inhibitor, and gene expression analysis by real-time polymerase chain reaction, we found that the inhibitory effect of PAs on seed germination is due to their promotion of ABA via de novo biogenesis, rather than by any inhibition of its degradation. Consistent with the relationship between PA content and ABA accumulation in seeds, PA-deficient mutants maintain a lower level of ABA compared with wild-types during germination. Our data suggest that PA distribution in the seed coat can act as a doorkeeper to seed germination. PA regulation of seed germination is mediated by the ABA signaling pathway. | Liguo Jia Qiuyu Wu Nenghui Ye Rui Liu Lu Shi Weifeng Xu Hui Zhi A. N. M. Rubaiyath Bin Rahman Yiji Xia Jianhua Zhang | 2012 | Journal of Integrative Plant Biology2012，54，9： | 9 |
| 3 | Rhizosheath formation and involvement in foxtail millet(Setaria italica) root growth under drought stress显示文摘The rhizosheath, a layer of soil particles that adheres firmly to the root surface by a combination of root hairs and mucilage, may improve tolerance to drought stress. Setaria italica(L.) P. Beauv.(foxtail millet), a member of the Poaceae family, is an important food and fodder crop in arid regions and forms a larger rhizosheath under drought conditions. Rhizosheath formation under drought conditions has been studied, but the regulation of root hair growth and rhizosheath size in response to soil moisture remains unclear. To address this question, in this study we monitored root hair growth and rhizosheath development in response to a gradual decline in soil moisture. Here, we determined that a soil moisture level of 10%–14%(w/w)stimulated greater rhizosheath production compared to other soil moisture levels. Root hair density and length also increased at this soil moisture level, which was validated by measurement of the expression of root hair-related genes.These findings contribute to our understanding of rhizosheath formation in response to soil water stress. | Tie-Yuan Liu Nenghui Ye Tao Song Yunying Cao Bei Gao Di Zhang Fuyuan Zhu Moxian Chen Yingjiao Zhang Weifeng Xu Jianhua Zhang | 2019 | Journal of Integrative Plant Biology2019，61，4： | 6 |
| 4 | Two hydroxypyruvate reductases encoded by OsHPR1 and OsHPR2 are involved in photorespiratory metabolism in rice显示文摘Mutations in the photorespiration pathway display a lethal phenotype in atmospheric air,which can be fully recovered by elevated CO2.An exception is that mutants of peroxisomal hydroxypyruvate reductase(HPR1)do not have this phenotype,indicating the presence of cytosolic bypass in the photorespiration pathway.In this study,we constructed overexpression of the OsHPR1 gene and RNA interference plants of OsHPR1 and OsHPR2 genes in rice(Oryza sativa L.cv.Zhonghua 11).Results from reverse transcription-polymerase chain reaction(RT-PCR),Western blot,and enzyme assays showed that HPR1 activity changed significantly in corresponding transgenic lines without any effect on HPR2 activity,which is the same for HPR2.However,metabolite analysis and the serine glyoxylate aminotransferase(SGAT)activity assay showed that the metabolitefiux of photorespiration was disturbed in RNAi lines of both HPR genes.Furthermore,HPR1 and HPR2proteins were located to the peroxisome and cytosol,respectively,by transient expression experiment.Double Research mutant hpr1 hpr2 was generated by crossing individual mutant of hpr1 and hpr2.The phenotypes of all transgenic lines were determined in ambient air and CO2-elevated air.The phenotype typical of photorespiration mutants was observed only where activity of both HPR1 and HPR2 were downregulated in the same line.Thesefindings demonstrate that two hydroxypyruvate reductases encoded by OsHPR1and OsHPR2 are involved in photorespiratory metabolism in rice. | Nenghui Ye Guozhen Yang Yan Chen Chan Zhang Jianhua Zhang Xinxiang Peng | 2014 | Journal of Integrative Plant Biology2014，56，2： | 2 |
| 5 | A spontaneous thermo-sensitive female sterility mutation in rice enables fully mechanized hybrid breeding显示文摘Male sterility enables hybrid crop breeding to increase yields and has been extensively studied. But thermo-sensitive female sterility, which is an ideal property that may enable full mechanization in hybrid rice breeding, has rarely been investigated due to the absence of such germplasm. Here we identify the spontaneous thermo-sensitive female sterility 1 (tfs1) mutation that confers complete sterility under regular/high temperature and partial fertility under low temperature as a point mutation in ARGONAUTE7 (AGO7). AGO7 associates with miR390 to form an RNA-Induced Silencing Complex (RISC), which triggers the biogenesis of small interfering RNAs (siRNAs) from TRANS-ACTING3 (TAS3) loci by recruiting SUPPRESSOR OF GENE SILENCING (SGS3) and RNA-DEPENDENT RNA POLYMERASE6 (RDR6) to TAS3 transcripts. These siRNAs are known as tasiR-ARFs as they act in trans to repress auxin response factor genes. The mutant TFS1 (mTFS1) protein is compromised in its ability to load the miR390/miR390* duplex and eject miR390* during RISC formation. Furthermore, tasiR-ARF levels are reduced in tfs1 due to the deficiency in RDR6 but not SGS3 recruitment by mTFS1 RISC under regular/high temperature, while low temperature partially restores mTFS1 function in RDR6 recruitment and tasiR-ARF biogenesis. A miR390 mutant also exhibits female sterility, suggesting that female fertility is controlled by the miR390-AGO7 module. Notably, the tfs1 allele introduced into various elite rice cultivars endows thermo-sensitive female sterility. Moreover, field trials confirm the utility of tfs1 as a restorer line in fully mechanized hybrid rice breeding. | Haoxuan Li Chenjiang You Manabu Yoshikawa Xiaoyu Yang Haiyong Gu Chuanguo Li Jie Cui Xuemei Chen Nenghui Ye Jianhua Zhang Guanqun Wang | 2022 | Cell Research2022，32，10： | 2 |
| 6 | Drought stress and plant ecotype drive microbiome recruitment in switchgrass rhizosheath显示文摘The rhizosheath,a layer of soil grains that adheres firmly to roots,is beneficial for plant growth and adaptation to drought environments.Switchgrass is a perennial C4 grass which can form contact rhizosheath under drought conditions.In this study,we characterized the microbiomes of four different rhizocompartments of two switchgrass ecotypes(Alamo and Kanlow)grown under drought or well-watered conditions via 16S ribosomal RNA amplicon sequencing.These four rhizocompartments,the bulk soil,rhizosheath soil,rhizoplane,and root endosphere,harbored both distinct and overlapping microbial communities.The root compartments(rhizoplane and root endosphere)displayed low-complexity communities dominated by Proteobacteria and Firmicutes.Compared to bulk soil,Cyanobacteria and Bacteroidetes were selectively enriched,while Proteobacteria and Firmicutes were selectively depleted,in rhizosheath soil.Taxa from Proteobacteria or Firmicutes were specifically selected in Alamo or Kanlow rhizosheath soil.Following drought stress,Citrobacter and Acinetobacter were further enriched in rhizosheath soil,suggesting that rhizosheath microbiome assembly is driven by drought stress.Additionally,the ecotype-specific recruitment of rhizosheath microbiome reveals their differences in drought stress responses.Collectively,these results shed light on rhizosheath microbiome recruitment in switchgrass and lay the foundation for the improvement of drought tolerance in switchgrass by regulating the rhizosheath microbiome. | Tie-Yuan Liu Nenghui Ye Xinyu Wang Debatosh Das Yuxiang Tan Xiangkai You Mingxiu Long Tianming Hu Lei Dai Jianhua Zhang Mo-Xian Chen | 2021 | Journal of Integrative Plant Biology2021，63，10： | 1 |
| 7 | Identification of microRNAs regulating grain filling of rice inferior spikelets in response to moderate soil drying post-anthesis显示文摘The grain filling of inferior spikelets is much less complete than that of superior spikelets in rice cultivars with large panicles and numerous spikelets and is promoted by moderate soil drying(MD)post-anthesis.A growing body of evidence has shown that microRNAs function in regulating grain development.However,little is known about the mechanism of microRNA control of grain filling of inferior spikelets in response to MD.In this study,grain filling of inferior spikelets was promoted by MD treatment in Nipponbare.Small-RNA profiling at the most active grain-filling stage was conducted in inferior spikelets under control(CK)and MD treatment.Of 521 known and 128 novel miRNAs,38 known and 9 novel miRNAs were differentially expressed between the CK and MD treatments.Target genes of differentially expressed miRNAs were involved in multiple developmental and signaling pathways associated with catalytic activity,carbohydrate metabolism,and other functions.Both miR1861 and miR397 were upregulated by MD,leading to a decrease in OsSBDCP1 and OsLAC,two negative regulators of SSIIIa activity and BR signaling,respectively.In contrast,miR1432 abundance was reduced by MD,resulting in upregulation of OsACOT and thus an elevated content of both ABA and IAA.These results suggest that both starch synthesis and phytohormone biosynthesis are regulated by differentially expressed miRNAs in inferior spikelets in response to MD treatment.Our results suggest the molecular mechanisms by which miRNAs regulate grain filling in inferior spikelets of rice under moderate soil drying,providing potential application in agriculture to increase rice yields by genetic approaches. | Zhenning Teng Yinke Chen Youqing Yuan Yaqiong Peng Yake Yi Huihui Yu Zhenxie Yi Jianchang Yang Yan Peng Meijuan Duan Jianhua Zhang Nenghui Ye | 2022 | The Crop Journal2022，10，4： | 1 |
| 8 | Effects of stress-induced ABA on root architecture development:Positive and negative actions显示文摘Root architecture development,an agronomic trait that influences crop yield,is regulated by multiple plant hormones.Abscisic acid(ABA)is a stress hormone that responds to multiple stresses,including salt,drought,and cold stress,and modulates various aspects of plant growth and development.In recent years,it has been found that ABA synthesized under mild stress or well-watered conditions can support plant growth and stress resistance by positively regulating root architecture development.In this review,we summarize the molecular,cellular,and organismal basis of ABA homeostasis in the root and how ABA signaling affects root architecture development both as an inhibitor and as an activator.We discuss the implications of these studies and the potential for exploiting the components of ABA signaling in designing crop plants with improved root system development and stress resistance. | Zhenning Teng Jiahan Lyu Yinke Chen Jianhua Zhang Nenghui Ye | 2023 | The Crop Journal2023，11，4： | 0 |
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