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Roles of miR319-regulated TCPs in plant development and response to abiotic stress

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The Crop Journal 2021年第1期9卷 17-28页

作者： Yujie Fang Yuqian Zheng Wei Lu Jian Li Yujing Duan Shuai Zhang Youping Wang Key Laboratory of Plant Functional Genomics of the Ministry of Education Jiangsu Key Laboratory of Crop Genomics and Molecular BreedingYangzhou UniversityYangzhou 225009JiangsuChina Joint International Research Laboratory of Agriculture and Agri-Product Safety the Ministry of Education of ChinaYangzhou UniversityYangzhou 225009JiangsuChina

Elaborate regulation of gene expression is required for plants to maintain normal growth,development,and ***(miRNAs)and transcription factors are key players that control gene expression in plant regulatory *** TEOSINTE BRANCHED1/CYCLOIDEA/PROLIFERATING CELL FACTOR(TCP)family comprises plantspecific transcription factors that contain a conserved TCP domain of 59 amino *** members of this family are targeted by miR319,one of the most ancient and evolutionarily conserved miRNAs in *** evidence has revealed that miR319-regulated TCP(MRTCP)genes participate extensively in plant development and responses to environmental *** this review,the structural characteristics and classifications of TCP transcription factors and the regulatory relationships between TCP transcription factors and miRNAs are *** knowledge of the regulatory functions of MRTCP genes in multiple biological pathways including leaf development,vascular formation,flowering,hormone signaling,and response to environmental stresses such as cold,salt,and drought is *** review will be beneficial for understanding the roles of the MRTCP-mediated regulatory network and its molecular mechanisms in plant development and stress response,and provides a theoretical basis for plant genetic improvement.

关键词： TCP miR319 Regulation Growth and development abiotic stress

Overexpression of an F-box Protein Gene Reduces abiotic stress Tolerance and Promotes Root Growth in Rice

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Molecular Plant 2011年第1期4卷 190-197页

作者： Yong-Sheng Yan Xiao-Ying Chen Kun Yang Zong-Xiu Sun Ya-Ping Fu Yu-Man Zhang Rong-Xiang Fang State Key Laboratory of Plant Genomics Institute of Microbiology Chinese Academy of Sciences Beijing 100101 China National Plant Gene Research Center Beijing 100101 China Graduate School of the Chinese Academy of Sciences Beijing 100039 China Present address: School of Life Science and Technology University of Electronic Science and Technology of China Chengdu 610054 China State Key Laboratory of Rice Biology National Rice Research Institute Hangzhou 310006 China

As one of the largest gene families, F-box domain proteins have important roles in regulating various devel- opmental processes and stress responses. In this study, we have investigated a rice F-box domain gene, MAIF1. The MAIF1 protein is mainly localized in the plasma membrane and nucleus. MAIF1 expression is induced rapidly and strongly by abscisic acid （ABA） and abiotic stresses. MAIF1 expression is also induced in root tips by sucrose, independent of its hy- drolytic hexose products, glucose and fructose, and the plant hormones auxin and cytokinin. Overexpression of MAIF1 reduces rice ABA sensitivity and abiotic stress tolerance and promotes rice root growth. These results suggest that MAIF1 is involved in multiple signaling pathways in regulating root growth. Growth restraint in plants is an acclimatization strategy against abiotic stress, Our results also suggest that MAIF1 plays the negative role in response to abiotic stress possibly by regulating root growth.

关键词： Rice (Oryza sativa L.) F-box domain abscisic acid abiotic stress tolerance root growth.

Hydrogen sulfide regulates abiotic stress tolerance and biotic stress resistance in Arabidopsis

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Journal of Integrative Plant Biology 2015年第7期57卷 628-640页

作者： Haitao Shi Tiantian Ye Ning Han Hongwu Bian Xiaodong Liu Zhulong Chan Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture Wuhan Botanical Gardenthe Chinese Academy of Sciences University of Chinese Academy of Sciences Institute of Genetics State Key Laboratory of Plant Physiology and BiochemistryCollege of Life SciencesZhejiang University College of Agronomy Xinjiang Agricultural University

Hydrogen sulfide （H2S） is an important gaseous molecule in various plant developmental processes and plant stress responses. In this study, the transgenic Arabidopsis thaliana plants with modulated expressions of two cysteine desulfhydrases, and exogenous H2S donor （sodium hydrosulfide, NariS） and H2S scavenger （hypotaurine, HT） pre-treated plants were used to dissect the involvement of H2S in plant stress responses. The cysteine desulfhydrases overexpressing plants and NariS pre-treated plants exhibited higher endogenous H2S level and improved abiotic stress tolerance and biotic stress resistance, while cysteine desulfhydrases knockdown plants and HT pre-treated plants displayed lower endogenous H2S level and decreased stress resistance. Moreover, H2S upregulated the transcripts of multiple abiotic and biotic stress-related genes, and inhibited reactive oxygen species （ROS） accumulation. Interest- ingly, MlR393-mediated auxin signaling including MIR393a/b and their target genes （TIR1, AFB1, AFB2, and AFB3） was transcrip-tionally regulated by H2S, and was related with H2S-induced antibacterial resistance. Moreover, H2S regulated 50 carbon metabolites including amino acids, organic acids, sugars, sugar alcohols, and aromatic amines. Taken together, these results indicated that cysteine desulfhydrase and H2S conferred abiotic stress tolerance and biotic stress resistance, via affecting the stress-related gene expressions, ROS metabolism, metabolic homeostasis, and MIR393-targeted auxin receptors.

关键词： abiotic stress auxin receptor biotic stress cysteine desulfhydrase hydrogen sulfide MIR393

Heterogeneous expression of Osa-MIR156bc increases abiotic stress resistance and forage quality of alfalfa

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The Crop Journal 2021年第5期9卷 1135-1144页

作者： Kexin Wang Yanrong Liu Fengkui Teng Huifang Cen Jianpin Yan Shiwen Lin Dayong Li Wanjun Zhang College of Grassland Science and Technology China Agricultural UniversityBeijing 100193China Key Lab of Grassland Science in Beijing China Agricultural UniversityBeijing 100193China College of Biological Science China Agricultural UniversityBeijing 100193China College of Life Sciences Shandong Normal UniversityJinan 250014ShandongChina

Alfalfa (Medicago sativa L.) is the most widely cultivated perennial leguminous forage crop *** RNA156 (miR156) precursor genes from dicotyledonous species are reportedly useful for improving alfalfa plant architecture and abiotic stress ***,there has been no report on whether a miR156 precursor gene from a monocotyledonous species functions in *** introduced two tandem precursor genes of miR156,rice Osa-MIR156b and Osa-MIR156c (Osa-MIR156bc),into *** expression of miR156 in the transgenic (TG) alfalfa was significantly *** to wild-type plants,the TG plants overexpressing miR156 had more branches and leaves and showed improved salt and drought *** of miR156 slightly reduced plant height,but the biomass yield of TG plants grown in flowerpots was still *** quality of TG plants was markedly improved by reduction of acid detergent lignin (ADL) content and increase in crude protein *** expression of the putative miR156 target genes Ms SPL6,Ms SPL12,and Ms SPL13 in TG plants was repressed by miR156overexpression,and that of all tested Ms SPLs would be sharply increased under drought or salt *** sequencing revealed that overexpression of miR156 affected the expression of genes associated with abiotic stress resistance and plant development in multiple *** first report of overexpression of monocot miR156 precursors in alfalfa sheds light on the function of mi RNA156 precursors from the monocot species rice that could be used for genetic improvement of the dicot forage crop alfalfa.

关键词： Alfalfa miR156 Biomass yield Forage quality abiotic stress

The TaFIM1 gene mediates wheat resistance against Puccinia striiformis f. sp. tritici and responds to abiotic stress

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Journal of Integrative Agriculture 2021年第7期20卷 1849-1857页

作者： SHI Bei-bei WANG Juan GAO Hai-feng ZHANG Xiao-juan WANG Yang MA Qing State Key Laboratory of Crop stress Biology for Arid Areas Northwest A&F UniversityYangling 712100P.R.China School of Life Science Shanxi Datong UniversityDatong 037009P.R.China Institute of Plant Protection Xinjiang Academy of Agricultural Sciences/Key Laboratory of Integrated Pest Management on Crop in Northwestern OasisMinistry of Agriculture and Rural AffairsUrumqi 830091P.R.China

Fimbrin, a regulator of actin cytoskeletal dynamics that participates in numerous physiological and biochemical processes, controls multiple developmental processes in a variety of tissues and cell types. However, the role of fimbrin in pathogen defense of wheat and the mechanisms have not been well studied. Here, we investigated that the expression of TaFIM1 gene of wheat was significantly induced in response to avirulent race of Puccinia striiformis f. sp. tritici(Pst) and silencing of TaFIM1 by virus-induced gene silencing method. The results show that silencing of TaFIM1 resulted in a reduction of resistance against the stripe rust indicated by both phenotypes and a histological examination of Pst growth. Additionally, the expression level of Ta FIM1 gene was up-regulated under abiotic stresses. These findings suggest that Ta FIM1 functions as a positive regulator of pathogen resistance of wheat plants and response to abiotic stress. Our work may show new light on understanding the roles of fimbrin in wheat.

关键词： wheat Puccinia striiformis f.sp.tritici fimbrin disease resistance abiotic stress

A High-Throughput Method for Screening Arabidopsis Mutants with Disordered abiotic stress-Induced Calcium Signal

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Journal of Genetics and Genomics 2012年第5期39卷 225-235页

作者： Zhen Pan Yang Zhao Yuan Zheng Juntao Liu Xiangning Jiang Yan Guo College of Life Sciences and Bioteclmology Beijing Forestry University Beijing 100083 China State Key Latboratory of Plant Physiology and Biochemistry. College of Biological Sciences. China Agricultural University Beijing 100193 China

It is established that different stresses cause signal-specific changes in cellular Ca2 ~ level, which function as messengers in modulating diverse physiological processes. These calcium signals are important for stress adaptation. Though numbers of downstream components of calcium signal cascades have been identified, upstream events in calcium signal remain elusive, specifically components required l＇~~r calcium signal generation due to the lack of high-throughput genetic assay. Here, we report the development of an easy and efficient method in a forward genetic screen for Ca2＋ signals-deficient mutants in Arahidopsis thaliana. Using this method, 121 mutants with disordered NaCI- and H=O2-induced Ca2＋ signals are isolated.

关键词： Arabidopsis" Mutant screen method Calcium signal abiotic stress

Regulation of Photosynthesis during abiotic stress-Induced Photoinhibition

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Molecular Plant 2015年第9期8卷 1304-1320页

作者： Mayank Anand Gururani Jelli Venkatesh Lam-Son Phan Tran School of Biotechnology Yeungnam University Gyeongsan Gyeongbook 772-749 Korea Department of Bioresource and Food Science Konkuk University Seou1143-701 Korea Signaling Pathway Research Unit RIKEN Center for Sustainable Resource Science 1-7-22 Suehiro-cho Tsurumi Yokohama Kanagawa 230-0045 Japan

Plants as sessile organisms are continuously exposed to abiotic stress conditions that impose numerous detrimental effects and cause tremendous loss of yield. abiotic stresses, including high sunlight, confer serious damage on the photosynthetic machinery of plants. Photosystem II （PSII） is one of the most susceptible components of the photosynthetic machinery that bears the brunt of abiotic stress. In addition to the generation of reactive oxygen species （ROS） by abiotic stress, ROS can also result from the absorption of excessive sunlight by the light-harvesting complex. ROS can damage the photosynthetic apparatus, particularly PSII, resulting in photoinhibition due to an imbalance in the photosynthetic redox signaling pathways and the inhibition of PSII repair. Designing plants with improved abiotic stress tolerance will require a comprehensive understanding of ROS signaling and the regulatory functions of various components, including protein kinases, transcription factors, and phytohormones, in the responses of photosynthetic machinery to abiotic stress. Bioenergetics approaches, such as chlorophyll a transient kinetics analysis, have facilitated our understanding of plant vitality and the assessment of PSII efficiency under adverse environmental conditions. This review discusses the current understanding and indicates potential areas of further studies on the regulation of the photosynthetic machinery under abiotic stress.

关键词： abiotic stress chlorophyll a fluorescence hormones light-harvesting complex photosynthesis

HOS3, an ELO-Like Gene, Inhibits Effects of ABA and Implicates a S-1-P/Ceramide Control System for abiotic stress Responses in Arabidopsis thaliana

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Molecular Plant 2009年第1期2卷 138-151页

作者： Tanya M. Quist Irina Sokolchik Huazhong Shi Robert J. Joly Ray A. Bressan Albino Maggio Meena Narsimhan Xia Li Center for Plant Environmental stress Physiology Purdue University West Lafayette IN 47907-2010 USA Department of Chemistry and Biochemistry Texas Tech University l-ubbock TX 79409-1061 USA Department of Agricultural Engineering and Agronomy University of Naples Federico II Via Universita 100 Portici (NA) Italy 80055 The Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental Biology Chinese Academy of SciencesShijiazhuang Hebei 050021 China

A hyper-osmotically sensitive mutant of Arabidopsis thaliana, designated hos3-1 （high expression of osmotically responsive genes）, was identified based on its hyper-luminescence of RD29A：LUC promoter fusion plants upon treatment with NaCI and ABA. These responses implicate the disrupted gene as a direct or indirect negative regulator of the RD29A stress-responsive pathway. By sequencing the flanking regions of the T-DNA borders, it was determined that the disrupted gene is at locus At4g36830, annotated as encoding a putative protein with high homology to CIG30 （ELO2/FEN1）. CIG30 has been implicated in synthesis of very long chain fatty acids （VLCFA）, which are essential precursors for sphingolipids and ceramides. Altered stress responses characteristic of ABA-hypersensitivity, including reduced root growth inhibition and reduced germination with ABA treatment and reduced water loss from leaves, were exhibited by allelic hos3-1 and hos3-2 mutants. The hos3-2 mutant is partially suppressed in its transcript abundance and is inherited as a recessive trait. Further, the HOS30RF under the control of the 35SCaMV promoter restored wild-type NaCI- and ABA-root growth sensitivity as well as RD29A：LUC luminescence in mutant plants. We also show here that the HOS3 wild-type gene functionally complements the sensitivity of elo2 and elo3 yeast mutants to monensin. Furthermore, both hos3-1 and hos3-2 alleles shared increased sensitivity to the herbicide Metolachlor, which inhibits acyl chain elongation in synthesis of VLCFA, and HOS3 functionally complemented both elo2 and elo3 and restored levels of VLCFA. Together, these data establish that HOS3 inhibits ABA-mediated stress responses and implicate the VLCFA pathway and products as control points for several aspects of abiotic stress signaling and responses. The results also provide support for a role of ceramide in the control of stomatal behavior.

关键词： abiotic stress Arabidopsis ABA signal pathway stomata very long chain fatty acid pathway.

Plant abiotic stress response and nutrient use efficiency

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Science China(Life Sciences) 2020年第5期63卷 635-674页

作者： Zhizhong Gong Liming Xiong Huazhong Shi Shuhua Yang Luis R.Herrera-Estrella Guohua Xu Dai-Yin Chao Jingrui Li Peng-Yun Wang Feng Qin Jigang Li Yanglin Ding Yiting Shi Yu Wang Yongqing Yang Yan Guo Jian-Kang Zhu State Key Laboratory of Plant Physiology and Biochemistry College of Biological SciencesChina Agricultural UniversityBeijing 100193China Department of Biology Hong Kong Baptist UniversityKowlong TongHong KongChina Department of Chemistry and Biochemistry Texas Tech UniversityLubbockTX 79409USA Plant and Soil Science Department(IGCAST) Texas Tech UniversityLubbockTX 79409USA Unidad de Genómica Avanzada(Langebio) Centro de Investigación y de Estudios AvanzadosIrapuato 36610México College of Resources and Environmental Sciences Nanjing Agricultural UniversityNanjing 210095China National Key laboratory of Plant Molecular Genetics CAS Center for Excellence in Molecular Plant SciencesShanghai Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghai 200032China School of Life Science Henan UniversityKaifeng 457000China Shanghai Center for Plant stress Biology CAS Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghai 200032China

abiotic stresses and soil nutrient limitations are major environmental conditions that reduce plant growth,productivity and *** have evolved mechanisms to perceive these environmental challenges,transmit the stress signals within cells as well as between cells and tissues,and make appropriate adjustments in their growth and development in order to survive and *** recent years,significant progress has been made on many fronts of the stress signaling research,particularly in understanding the downstream signaling events that culminate at the activation of stress-and nutrient limitation-responsive genes,cellular ion homeostasis,and growth ***,the revelation of the early events of stress signaling,particularly the identification of primary stress sensors,still lags *** this review,we summarize recent work on the genetic and molecular mechanisms of plant abiotic stress and nutrient limitation sensing and signaling and discuss new directions for future studies.

关键词： abiotic stress sensing nutrient use efficiency heavy metal Ca2+signaling ROS signal transduction phosphorylation transcription factor transporter