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OsATL32 ubiquitinates the reactive oxygen species-producing OsRac5-OsRbohB module to suppress rice immunity

Journal of Integrative Plant Biology 2024年第7期66卷 1459-1480页

作者： Yuqing Yan Hui Wang Yan Bi Jiajing Wang Muhammad Noman Dayong Li Fengming Song National key laboratory for Rice Biology and Breeding Institute of BiotechnologyZhejiang UniversityHangzhou 310058China Ministry of Agriculture key laboratory of Molecular Biology of crop Pathogens and Insect Pests Institute of BiotechnologyZhejiang UniversityHangzhou 310058China key laboratory of Biology of crop Pathogens and Insects of Zhejiang Province Institute of BiotechnologyZhejiang UniversityHangzhou 310058China

Ubiquitination-mediated protein degradation is integral to plant immunity,with E3 ubiquitin ligases acting as key factors in this ***,we report the functions of OsATL32,a plasma membrane-localized Arabidopsis Tóxicos En Levadura(ATL)-type E3 ubiquitin ligase,in rice(Oryza sativa)immunity and its associated regulatory *** found that the expression of OsATL32 is downregulated in both compatible and incompatible interactions between rice and the rice blast fungus Magnaporthe *** OsATL32 protein level declines in response to infection by a compatible *** strain or to chitin ***32 negatively regulates rice resistance to blast and bacterial leaf blight diseases,as well as chitin-triggered *** and genetic studies revealed that OsATL32 suppresses pathogen-induced reactive oxygen species(ROS)accumulation by mediating ubiquitination and degradation of the ROS-producing OsRac5–OsRbohB module,which enhances rice immunity against *** protein phosphatase PHOSPHATASE AND TENSIN HOMOLOG enhances rice blast resistance by dephosphorylating OsATL32 and promoting its degradation,preventing its negative effect on rice *** study provides insights into the molecular mechanism by which the E3 ligase OsATL32 targets a ROS-producing module to undermine rice immunity.

关键词： E3 ligase OsATL32 OsRac5-OsRbohB module phosphatase OsPTEN reactive oxygen species rice immunity

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Heterogeneous expression of stearoyl-acyl carrier protein desaturase genes SAD1 and SAD2 from Linum usitatissimum enhances seed oleic acid accumulation and seedling cold and drought tolerance in Brassica napus

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Journal of Integrative Agriculture 2024年第6期23卷 1864-1878页

作者： Jianjun Wang Yanan Shao Xin Yang Chi Zhang Yuan Guo Zijin Liu Mingxun Chen State key laboratory of crop Stress Biology for Arid Areas/National Yangling Agricultural biotechnology&Breeding Center/Shaanxi key laboratory of crop Heterosis/College of Agronomy Northwest A&F UniversityYangling 712100China

Flax(Linum usitatissimum L.)is a versatile crop and its seeds are a major source of unsaturated fatty ***-acyl carrier protein desaturase(SAD)is a dehydrogenase enzyme that plays a key role in oleic acid biosynthesis as well as responses to biotic and abiotic ***,the function of SAD orthologs from *** has not been ***,we found that two LuSAD genes,LuSAD1 and LuSAD2,are present in the genome of *** cultivar‘Longya 10’.Heterogeneous expression of either LuSAD1 or LuSAD2 in Arabidopsis thaliana resulted in higher contents of total fatty acids and oleic acid in the ***,ectopic expression of LuSAD2 in *** caused altered plant ***,the overexpression of either LuSAD1 or LuSAD2 in Brassica napus also resulted in increased contents of total fatty acids and oleic acid in the ***,we demonstrated that either LuSAD1 or LuSAD2 enhances seedling resistance to cold and drought stresses by improving antioxidant enzyme activity and nonenzymatic antioxidant levels,as well as reducing membrane *** findings not only broaden our knowledge of the LuSAD functions in plants,but also offer promising targets for improving the quantity and quality of oil,and the abiotic stress tolerance of oil-producing crops,through molecular manipulation.

关键词： LuSAD oleic acid cold tolerance drought tolerance Linum usitatissimum Brassica napus

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Advances in the study of auxin early response genes:Aux/IAA,GH3,and SAUR

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The crop Journal 2024年第4期12卷 964-978页

作者： Dongfang Bao Senqiu Chang Xiaodong Li Yanhua Qi key laboratory of Herbage&Endemic crop Biology of Ministry of Education Inner Mongolia Key Laboratory of Herbage&Endemic Crop BiotechnologySchool of Life SciencesInner Mongolia UniversityHohhot 010000Inner MongoliaChina

Auxin plays a crucial role in all aspects of plant growth and *** can induce the rapid and efficient expression of some genes,which are named auxin early response genes(AERGs),mainly including the three families:auxin/indole-3-acetic acid(Aux/IAA),Gretchen Hagen 3(GH3),and small auxin-up RNA(SAUR).Aux/IAA encodes the Aux/IAA protein,which is a negative regulator of auxin ***/IAA and auxin response factor(ARF)form a heterodimer and participate in a variety of physiological processes through classical or non-classical auxin signaling *** GH3 encodes auxin amide synthetase,which catalyzes the binding of auxin to acyl-containing small molecule substrates(such as amino acids and jasmonic acid),and regulates plant growth and stresses by regulating auxin *** is a class of small auxin up-regulated *** response to auxin is complex,and the process may occur at the transcriptional,post-transcriptional and protein *** the development of multi-omics,significant progress has been made in the study of Aux/IAA,GH3,and SAUR genes,but there are still many *** review offers insight into the characteristics of Aux/IAA,GH3,and SAUR gene families,and their roles in roots,hypocotyls,leaves,leaf inclinations,flowers,seed development,stress response,and phytohormone crosstalk,and provides clues for future research on phytohormone signaling and the molecular design breeding of crops.

关键词： Auxin Aux/IAA GH3 SAUR Stress

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IbNIEL-mediated degradation of IbNAC087 regulates jasmonic acid-dependent salt and drought tolerance in sweet potato

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Journal of Integrative Plant Biology 2024年第2期66卷 176-195页

作者： Xu Li Zhen Wang Sifan Sun Zhuoru Dai Jun Zhang Wenbin Wang Kui Peng Wenhao Geng Shuanghong Xia Qingchang Liu Hong Zhai Shaopei Gao Ning Zhao Feng Tian Huan Zhang Shaozhen He key laboratory of Sweet Potato Biology and biotechnology Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis&Utilization and Joint Laboratory for International Cooperation in Crop Molecular BreedingMinistry of EducationCollege of Agronomy&BiotechnologyChina Agricultural UniversityBeijing 100193China Sanya Institute of China Agricultural University Sanya 572025China State key laboratory of Plant Physiology and Biochemistry National Maize Improvement CenterKey Laboratory of Biology and Genetic Improvement of MaizeBeijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing 100193China

Sweet potato(Ipomoea batatas[L.]Lam.)is a crucial staple and bioenergy *** abiotic stress tolerance holds significant importance in fully utilizing marginal *** processes regulate abiotic stress responses,yet the molecular regulatory mechanisms in sweet potato remain *** this study,a NAC(NAM,ATAF1/2,and CUC2)transcription factor,IbNAC087,was identified,which is commonly upregulated in salt-and drought-tolerant *** of IbNAC087 increased salt and drought tolerance by increasing jasmonic acid(JA)accumulation and activating reactive oxygen species(ROS)scavenging,whereas silencing this gene resulted in opposite ***-rich IbNAC087-OE(overexpression)plants exhibited more stomatal closure than wild-type(WT)and IbNAC087-Ri plants under NaCl,polyethylene glycol,and methyl jasmonate ***087 functions as a nuclear transcriptional activator and directly activates the expression of the key JA biosynthesisrelated genes lipoxygenase(IbLOX)and allene oxide synthase(IbAOS).Moreover,IbNAC087 physically interacted with a RING-type E3 ubiquitin ligase NAC087-INTERACTING E3 LIGASE(IbNIEL),negatively regulating salt and drought tolerance in sweet *** ubiquitinated IbNAC087 to promote 26S proteasome degradation,which weakened its activation on IbLOX and *** findings provide insights into the mechanism underlying the IbNIEL-IbNAC087 module regulation of JA-dependent salt and drought response in sweet potato and provide candidate genes for improving abiotic stress tolerance in crops.

关键词： abiotic tolerance IbNAC087 IbNIEL JA sweet potato

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Antagonistic MADS-box transcription factors SEEDSTICK and SEPALLATA3 form a transcriptional regulatory network that regulates seed oil accumulation

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Journal of Integrative Plant Biology 2024年第1期66卷 121-142页

作者： Shuangcheng He Yuanchang Min Zijin Liu Fang Zhi Rong Ma Ankang Ge Shixiang Wang Yu Zhao Danshuai Peng Da Zhang Minshan Jin Bo Song Jianjun Wang Yuan Guo Mingxun Chen State key laboratory for crop Stress Resistance and High‐Efficiency Production National Yangling Agricultural Biotechnology&Breeding CenterShaanxi Key Laboratory of Crop HeterosisCollege of AgronomyNorthwest A&F UniversityYangling 712100China State key laboratory for crop Stress Resistance and High‐Efficiency Production Shaanxi Key Laboratory of AppleCollege of HorticultureNorthwest A&F UniversityYangling 712100China

Transcriptional regulation is essential for balancing multiple metabolic pathways that influence oil accumulation in *** far,the transcriptional regulatory mechanisms that govern seed oil accumulation remain largely ***,we identified the transcriptional regulatory network composed of MADS-box transcription factors SEEDSTICK(STK)and SEPALLATA3(SEP3),which bridges several key genes to regulate oil accumulation in *** found that STK,highly expressed in the developing embryo,positively regulates seed oil accumulation in Arabidopsis(Arabidopsis thaliana).Furthermore,we discovered that SEP3 physically interacts with STK in vivo and in *** oil content is increased by the SEP3 mutation,while it is decreased by SEP3 *** chromatin immunoprecipitation,electrophoretic mobility shift assay,and transient dual-luciferase reporter assays showed that STK positively regulates seed oil accumulation by directly repressing the expression of MYB5,SEP3,and SEED FATTY ACID REDUCER 4(SFAR4).Moreover,genetic and molecular analyses demonstrated that STK and SEP3 antagonistically regulate seed oil production and that SEP3 weakens the binding ability of STK to MYB5,SEP3,and ***,we demonstrated that TRANSPARENT TESTA 8(TT8)and ACYL-ACYL CARRIER PROTEIN DESATURASE 3(AAD3)are direct targets of MYB5 during seed oil accumulation in ***,our findings provide the transcriptional regulatory network antagonistically orchestrated by STK and SEP3,which fine tunes oil accumulation in seeds.

关键词： seed oil accumulation SEP3 STK transcription factor transcriptional regulation

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A NAC transcription factor MNAC3-centered regulatory network negatively modulates rice immunity against blast disease

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Journal of Integrative Plant Biology 2024年第9期66卷 2017-2041页

作者： Hui Wang Yan Bi Yuqing Yan Xi Yuan Yizhou Gao Muhammad Noman Dayong Li Fengming Song National key laboratory for Rice Biology and Breeding Institute of BiotechnologyZhejiang UniversityHangzhou 310058China Ministry of Agriculture key laboratory of Molecular Biology of crop Pathogens and Insect Pests Institute of BiotechnologyZhejiang UniversityHangzhou 310058China key laboratory of Biology of crop Pathogens and Insects of Zhejiang Province Institute of BiotechnologyZhejiang UniversityHangzhou 310058China College of Chemistry and Life Sciences Zhejiang Normal UniversityJinhua 321004China

NAC transcription factors(TFs)are pivotal in plant immunity against diverse ***,we report the functional and regulatory network of MNAC3,a novel NAC TF,in rice ***3,a transcriptional activator,negatively modulates rice immunity against blast and bacterial leaf blight diseases and pathogen-associated molecular pattern(PAMP)-triggered immune ***3 binds to a CACG cis-element and activates the transcription of immune-negative target genes OsINO80,OsJAZ10,and *** negative function of MNAC3 in rice immunity depends on its transcription of downstream genes such as OsINO80 and ***3 interacts with immunity-related OsPP2C41(a protein phosphatase),ONAC066(a NAC TF),and OsDjA6(a DnaJ chaperone).ONAC066 and OsPP2C41 attenuate MNAC3 transcriptional activity,while OsDjA6 promotes *** of MNAC3 at S163 is critical for its negative functions in rice ***2C41,which plays positive roles in rice blast resistance and chitin-triggered immune responses,dephosphorylates MNAC3,suppressing its transcriptional activity on the target genes OsINO80,OsJAZ10,and OsJAZ11 and promoting the translocation of MNAC3 from nucleus to *** results establish a MNAC3-centered regulatory network in which OsPP2C41 dephosphorylates MNAC3,attenuating its transcriptional activity on downstream immune-negative target genes in ***,these findings deepen our understanding of molecular mechanisms in rice immunity and offer a novel strategy for genetic improvement of rice disease resistance.

关键词： NAC transcription factor MNAC3 OsINO80 OsJAZ10 OsJAZ11 protein phosphatase OsPP2C41 rice immunity

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Comprehensive integration of single-cell transcriptomic data illuminates the regulatory network architecture of plant cell fate specification

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Plant Diversity 2024年第3期46卷 372-385页

作者： Shanni Cao Xue Zhao Zhuojin Li Ranran Yu Yuqi Li Xinkai Zhou Wenhao Yan Dijun Chen Chao He State key laboratory of Pharmaceutical biotechnology School of Life SciencesNanjing UniversityNanjing 210023China National key laboratory of crop Genetic Improvement Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhan 430070China

Plant morphogenesis relies on precise gene expression programs at the proper time and position which is orchestrated by transcription factors(TFs)in intricate regulatory networks in a cell-type specific *** we introduced a comprehensive single-cell transcriptomic atlas of Arabidopsis *** atlas is the result of meticulous integration of 63 previously published scRNA-seq datasets,addressing batch effects and conserving biological *** integration spans a broad spectrum of tissues,including both below-and above-ground *** a rigorous approach for cell type annotation,we identified 47 distinct cell types or states,largely expanding our current view of plant cell *** systematically constructed cell-type specific gene regulatory networks and uncovered key regulators that act in a coordinated manner to control cell-type specific gene *** together,our study not only offers extensive plant cell atlas exploration that serves as a valuable resource,but also provides molecular insights into gene-regulatory programs that varies from different cell types.

关键词： Arabidopsis Single cell transcriptome Gene regulatory network Data integration Plant cell atlas

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A pair of nuclear factor Y transcription factors act as positive regulators in jasmonate signaling and disease resistance in Arabidopsis

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Journal of Integrative Plant Biology 2024年第9期66卷 2042-2057页

作者： Chuyu Lin Chenghao Lan Xiaoxiao Li Wei Xie Fucheng Lin Yan Liang Zeng Tao Ministry of Agriculture key laboratory of Molecular Biology of crop Pathogens and Insects Institute of BiotechnologyZhejiang UniversityHangzhou 310058China State key laboratory for Managing Biotic and Chemical Treats to the Quality and Safety of Agro‐products Institute of BiotechnologyZhejiang UniversityHangzhou 311400China

The plant hormone jasmonate(JA)regulates plant growth and immunity by orchestrating a genome-wide transcriptional *** the resting stage,JASMONATE-ZIM DOMAIN(JAZ)proteins act as main repressors to regulate the expression of JA-responsive genes in the JA signaling ***,the mechanisms underlying de-repression of JA-responsive genes in response to JA treatment remain ***,we report two nuclear factor Y transcription factors NF-YB2 and NF-YB3(thereafter YB2 and YB3)play key roles in such de-repression in ***2 and YB3 function redundantly and positively regulate plant resistance against the necrotrophic pathogen Botrytis cinerea,which are specially required for transcriptional activation of a set of JA-responsive genes following ***,YB2 and YB3 modulated their expression through direct occupancy and interaction with histone demethylase Ref6 to remove repressive histone ***,YB2 and YB3 physically interacted with JAZ repressors and negatively modulated their abundance,which in turn attenuated the inhibition of JAZ proteins on the transcription of JA-responsive genes,thereby activating JA response and promoting disease ***,our study reveals the positive regulators of YB2 and YB3 in JA signaling by positively regulating transcription of JA-responsive genes and negatively modulating the abundance of JAZ proteins.

关键词： histone demethylase jasmonate response JAZ repressor necrotrophic resistance nuclear factor

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Identification of new cotton fiber-quality QTL by multiple genomic analyses and development of markers for genomic breeding

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The crop Journal 2024年第3期12卷 866-879页

作者： Haozhe Tan Binghui Tang Mengling Sun Qiulu Yin Yizan Ma Jianying Li Pengcheng Wang Zhonghua Li Guannan Zhao Maojun Wang Xianlong Zhang Chunyuan You Lili Tu National key laboratory of crop Genetic Improvement Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhan 430070HubeiChina Cotton Research Institute Shihezi Academy of Agriculture ScienceShihezi 832000XinjiangChina

Cotton fiber is one of the main raw materials for the textile *** recent years,many cotton fiber quality QTL have been identified,but few were applied in *** this study,a genome wide association study(GWAS)of fiber-quality traits in 265 upland cotton breeding intermediate lines(GhBreeding),combined with genome-wide selective sweep analysis(GSSA)and genomic selection(GS),revealed 25 *** of these QTL were ignored by only using *** CRISPR/Cas9 mutants of GhMYB_D13 had shorter fiber,which indicates the credibility of QTL to a certain *** these QTL were verified in other cotton natural populations,5 stable QTL were found having broad potential for application in ***,among these 5 stable QTL,superior genotypes of 4 showed an enrichment in most improved new varieties widely cultivated *** findings provide insights for how to identify more QTL through combined multiple genomic analysis to apply in breeding.

关键词： Cotton fiber quality breeding GWAS Genome-wide selective sweep analysis Genomic selection InDel markers

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Underground communication:Long non-coding RNA signaling in the plant rhizosphere

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Plant Communications 2024年第7期5卷 28-51页

作者： Muhammad Fahad Leeza Tariq Sajid Muhammad Liang Wu Hainan Institute Zhejiang UniversitySanyaHainan 572000China Zhejiang Provincial key laboratory of crop Genetic Resources College of Agriculture and BiotechnologyZhejiang UniversityHangzhouZhejiang 310058China National key laboratory for Rice Biology Institute of BiotechnologyZhejiang UniversityHangzhou 310058China

Long non-coding RNAs(lncRNAs)have emerged as integral gene-expression regulators underlying plant growth,development,and *** adapt to the heterogeneous and dynamic rhizosphere,plants use interconnected regulatory mechanisms to optimally fine-tune gene-expression-governing interactions with soil biota,as well as nutrient acquisition and heavy metal ***,high-throughput sequencing has enabled the identification of plant lncRNAs responsive to rhizosphere biotic and abiotic ***,we examine lncRNA biogenesis,classification,and mode of action,highlighting the functions of lncRNAs in mediating plant adaptation to diverse rhizosphere *** then discuss studies that reveal the significance and target genes of lncRNAs during developmental plasticity and stress responses at the rhizobium interface.A comprehensive understanding of specific lncRNAs,their regulatory targets,and the intricacies of their functional interaction networks will provide crucial insights into how these transcriptomic switches fine-tune responses to shifting rhizosphere *** ahead,we foresee that single-cell dissection of cell-type-specific lncRNA regulatory dynamics will enhance our understanding of the precise developmental modulation mechanisms that enable plant rhizosphere *** future challenges through multi-omics and genetic approaches will more fully reveal the integral roles of lncRNAs in governing plant adaptation to the belowground environment.

关键词： biotic and abiotic cues heavy metals long non-coding RNAs nutrients phytoremediation rhizosphere microbiome

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