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Genetic variation in a heat shock transcription factor modulates cold tolerance in maize

Molecular Plant 2024年第9期17卷 1423-1438页

作者： Lei Gao Lingling Pan Yiting Shi Rong Zeng Minze Li Zhuoyang Li Xuan Zhang Xiaoming Zhao Xinru Gong Wei Huang Xiaohong Yang Jinsheng Lai Jianru Zuo Zhizhong Gong Xiqing Wang Weiwei Jin Zhaobin Dong Shuhua Yang State Key Laboratory of Plant Environmental Resilience Frontiers Science Center for Molecular Design BreedingCollege of Biological SciencesCenter for Crop Functional Genomics and Molecular BreedingChina Agricultural UniversityBeijing 100193China State Key Laboratory of Maize Bio-breeding National Maize Improvement CenterFrontiers Science Center for Molecular Design BreedingDepartment of Plant Geneticsand BreedingChinaAgricultural UniversityBeijingChina State Key Laboratory of Plant Genomics and national Plant Gene Research center Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing100101China

Understanding how maize(Zea mays)responds to cold stress is crucial for facilitating breeding programs of cold-tolerant *** extensive utilization of the genome-wide association study(GWAs)approach for exploring favorable natural alleles associated with maize cold tolerance,few studies have successfully identified candidate genes that contribute to maize cold *** this study,we used a diverse panel of inbred maize lines collected from different germplasm sources to perform a GWAS on var-iations in the relative injured area of maize true leaves during cold stress-a trait very closely correlated with maize cold *** identified HsF21,which encodes a B-class heat shock transcription factor(HSF)that positively regulates cold tolerance at both the seedling and germination *** varia-tions in the promoter of the cold-tolerant HSF21Hap1 allele led to increased HSF21 expression under cold stress by inhibiting binding of the basic leucine zipper bziP68 transcription factor,a negative regulator of cold *** integrating transcriptome deep sequencing,DNA affinity purification sequencing,and targeted lipidomic analysis,we revealed the function of HsF21 in regulating lipid metabolism homeo-stasis to modulate cold tolerance in *** addition,we found that HsF21 confers maize cold tolerance without incurring yield ***,this study establishes HsF21 as a key regulator that en-hances cold tolerance in maize,providing valuable genetic resources for breeding of cold-tolerant maize varieties.

关键词： heat shock factor HSF21 cold tolerance natural variation bZiP68 lipid metabolism maize

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OsLESV and OsESV1 promote transitory and storage starch biosynthesis to determine rice grain quality and yield

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Plant Communications 2024年第7期5卷 215-230页

作者： Nannan Dong Guiai Jiao Ruijie Cao Sanfeng Li Shaolu Zhao Yingqing Duan Liuyang Ma Xinwei Li Feifei Lu Hong Wang Shiwen Wang Gaoneng Shao Zhonghua Sheng Shikai Hu Shaoqing Tang Xiangjin Wei Peisong Hu State Key Laboratory of Rice Biology and breeding China National Center for Rice ImprovementChina National Rice Research InstituteHangzhou 310006China

Transitory starch is an important carbon source in leaves,and its biosynthesis and metabolism are closely related to grain quality and *** molecular mechanisms controlling leaf transitory starch biosynthesis and degradation and their effects on rice(Oryza sativa)quality and yield remain ***,we show that OsLESV and OsESV1,the rice orthologs of AtLESV and AtESV1,are associated with transitory starch biosynthesis in *** total starch and amylose contents in leaves and endosperms are significantly reduced,and the final grain quality and yield are compromised in oslesv and osesv1 single and oslesv esv1 double ***,we found that OsLESV and OsESV1 bind to starch,and this binding depends on a highly conserved C-terminal tryptophan-rich region that acts as a starch-binding ***,OsLESV and OsESV1 also interact with the key enzymes of starch biosynthesis,granule-bound starch synthase I(GBSSI),GBSSII,and pyruvate orthophosphote dikiase(PPDKB),to maintain their protein stability and *** and OsESV1 also facilitate the targeting of GBSSI and GBSSII from plastid stroma to starch *** of GBSSI,GBSSII,and PPDKB can partly rescue the phenotypic defects of the oslesv and osesv1 ***,we demonstrate that OsLESV and OsESV1 play a key role in regulating the biosynthesis of both leaf transitory starch and endosperm storage starch in *** findings deepen our understanding of the molecular mechanisms underlying transitory starch biosynthesis in rice leaves and reveal how the transitory starch metabolism affects rice grain quality and yield,providing useful information for the genetic improvement of rice grain quality and yield.

关键词： transitory starch starch-binding domain starch biosynthesis leaf starch deficiency rice Oryza sativa

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Rice gene OsUGT75A regulates seedling emergence under deep-sowing conditions

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The Crop Journal 2024年第1期12卷 133-141页

作者： Jia Zhao Siyu Liu Xiaoqian Zhao Zhibo Huang Shan Sun Zixuan Zeng Yongqi He Zhoufei Wang The Laboratory of Seed Science and Technology Guangdong Key Laboratory of Plant Molecular BreedingNational Engineering Research Center of Plant Space BreedingSouth China Agricultural UniversityGuangzhou 510642GuangdongChina

Poor seedling emergence is a challenge for direct seeding of rice under deep-sowing field *** we reveal that UDP-glucosyltransferase OsUGT75A promotes rice seedling emergence under deepsowing conditions by increasing shoot *** of OsUGT75A was higher in the middle regions of the shoot and in shoots under deep-sowing *** of free abscisic acid(ABA)and jasmonates(JA)were higher in shoots of OsUGT75A mutants than in those of wild-type plants,and OsUGT75A mutants were more sensitive to ABA and JA *** shoot length was attributed to higher ABA INSENSITIVE 3(OsABI3)expression and lower JASMONATE-ZIM domain protein(OsJAZ)expression in *** extension by OsUGT75A is achieved mainly by promotion of cell *** elite haplotype of OsUGT75A associated with increased shoot length was identified among indica rice ***75A acts to increase seedling emergence under deep-sowing conditions.

关键词： Abscisic acid Deep-sowing Jasmonic acid Rice Shoot length

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The VAMP-associated protein VAP27-1 plays a crucial role in plant resistance to ER stress by modulating ER–PM contact architecture in Arabidopsis

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Plant Communications 2024年第7期5卷 261-279页

作者： Yi Man Yue Zhang Linghui Chen Junhui Zhou Yufen Bu Xi Zhang Xiaojuan Li Yun Li Yanping Jing Jinxing Lin national Engineering Research center of Tree breeding and Ecological Restoration College of Biological Sciences and TechnologyBeijing Forestry UniversityBeijing 100083China Key Laboratory of Genetics and breeding in Fore These authors contributed equally to this article

The endoplasmic reticulum(ER)and the plasma membrane(PM)form ER–PM contact sites(EPCSs)that allow the ER and PM to exchange materials and ***-induced disruption of protein folding triggers ER stress,and the cell initiates the unfolded protein response(UPR)to resist the ***,whether EPCSs play a role in ER stress in plants remains ***-ASSOCIATED MEMBRANE PROTEIN(VAMP)-ASSOCIATED PROTEIN 27-1(VAP27-1)functions in EPCS tethering and is encoded by a family of 10 genes(VAP27-1–10)in Arabidopsis ***,we used CRISPR-Cas9-mediated genome editing to obtain a homozygous vap27-1 vap27-3 vap27-4(vap27-1/3/4)triple mutant lacking three of the key VAP27 family members in *** vap27-1/3/4 mutant exhibits defects in ER–PM connectivity and EPCS architecture,as well as excessive UPR *** further showed that relocation of VAP27-1 to the PM mediates specific VAP27-1-related EPCS remodeling and expansion under ER ***,the spatiotemporal dynamics of VAP27-1 at the PM increase ER–PM connectivity and enhance Arabidopsis resistance to ER *** addition,we revealed an important role for intracellular calcium homeostasis in the regulation of UPR *** together,these results broaden our understanding of the molecular and cellular mechanisms of ER stress and UPR signaling in plants,providing additional clues for improving plant broad-spectrum resistance to different stresses.

关键词： Arabidopsis VAP27-1 ER–PM contact sites ER stress unfolded protein response

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Haploids can be induced in knockout mutants of OsPLA1,but not OsDMP3 or OsDMP6,in rice

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The Crop Journal 2024年第1期12卷 213-221页

作者： Zongkai Liu Yu Zhong Xiaolong Qi Tai An Shuwei Guo Dong Wang Yuwen Wang Bin Feng Zuofeng Zhu Shaojiang Chen Chenxu Liu national Maize Improvement center Engineering Research Center of Ministry of EducationChina Agricultural UniversityBeijing 100193China national center for Evaluation of Agricultural Wild Plants(Rice) Department of Plant Genetics and BreedingChina Agricultural UniversityBeijing 100193China

Doubled haploid(DH)technology is an important tool in crop breeding because it can significantly accelerate the breeding ***1/MATL/NLD and ZmDMP are two key genes controlling haploid induction(HI)in maize,exhibiting a synergistic ***,it is unknown whether knock out of ZmDMP orthologs can stimulate HI in *** this study,a ZmPLA1 ortholog(OsPLA1)and two ZmDMP orthologs(OsDMP3 and OsDMP6)were identified in *** three genes encode plasma membrane-localized proteins and were highly expressed in mature *** of OsPLA1 in both Minghui 63 and Nipponbare resulted in reduced seed setting rate(SSR)and caused *** osdmp3,osdmp6 and the double mutant failed to trigger HI independently,nor increased the haploid induction rate(HIR)when combined with *** pollinations operations of QX654A with the ospla1 mutant significantly improve SSR,while reducing ***-seq profiling of mature ospla1 mutant anthers indicated that a large number of differentially expressed genes(DEGs)were enriched in redox homeostasis and lipid metabolic GO terms,plant hormone signal transduction,and MAPK signaling *** findings provide important insights towards construction of an efficient DH breeding technology and study of the molecular mechanism of HI in rice.

关键词： Doubled haploid breeding Haploid induction Mutation anlaysis Rice

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Oriented Generation of Novel Thermo-Sensitive Genic Male Sterile Lines with Improved Grain Shape and Outcrossing Rate in Early-Season Rice

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Rice science 2024年第2期31卷 129-133,I0001-I0016页

作者： ZHANG Huali CHEN Junyu LI Ruiqing WANG Huimei DAI Dongqing LIANG Minmin WU Mingyue MA Liangyong State Key Laboratory of Rice Biology and breeding/Chinese national center for Rice Improvement China National Rice Research InstituteHangzhou 310006China

Two-line hybrid rice with excellent quality is preferred in the Chinese ***,there is a trade-off between reducing costs for hybrid seed production and lowering the outcrossing rate of the sterile line,which is largely determined by the stigma exsertion rate(SER).In this study,we constructed mutants of male sterility lines with improved grain length(GL)and SER in three elite early-season indica rice varieties through targeted manipulation of the TMS5 and GS3 genes using CRISPR/Cas9-mediated multiplex *** obtained a series of marker-free gs3 single mutants and gs3tms5 double mutants with significantly higher SER,longer grains,and increased 1000-grain weight compared with the wild type(WT).Importantly,the typically thermo-sensitive genic male sterile(TGMS)trait with a higher SER was observed in gs3tms5 mutants,and their F1 hybrids exhibited remarkable improvements in grain shape and yield-related *** findings provided an efficient method to generate new valuable TGMS germplasm with improved SER through the mutagenesis of GS3 and TMS5 synergistically,and demonstrated that GS3 had pleiotropic effects on grain size,SER,and grain quality in early-season indica rice.

关键词： sterile elite season

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Simultaneous removal of Cd(Ⅱ)and As(Ⅴ)by ferrihydrite-biochar composite:Enhanced effects of As(Ⅴ)on Cd(Ⅱ)adsorption

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Journal of Environmental Sciences 2024年第5期139卷 267-280页

作者： Wenjun Zeng Yang Lu Jingyan Zhou Jie Zhang Yuanxiao Duan Changxun Dong Wencheng Wu College of Sciences Nanjing Agricultural UniversityNanjing 210095China South China Institute of Environmental Sciences Ministry of Ecology and EnvironmentGuangzhou 510655China Guangdong Engineering&Technology Research center for System Control of livestock and Poultry breeding Pollution Guangzhou 510655China

The coexistence of cadmium(Cd(Ⅱ))and arsenate(As(Ⅴ))pollution has long been an environmental ***,a porous carbonaceous material with tunable functionality,has been used for the remediation of contaminated ***,it is still challenging for the dynamic quantification and mechanistic understanding of the simultaneous sequestration of multi-metals in biochar-engineered environment,especially in the presence of *** this study,ferrihydrite was coprecipitated with biochar to investigate how ferrihydritebiochar composite affects the fate of heavy metals,especially in the coexistence of Cd(Ⅱ)and As(Ⅴ).In the solution system containing both Cd(Ⅱ)and As(Ⅴ),the maximum adsorption capacities of ferrihydrite-biochar composite for Cd(Ⅱ)and As(Ⅴ)reached 82.03μmol/g and 531.53μmol/g,respectively,much higher than those of the pure biochar(26.90μmol/g for Cd(Ⅱ),and 40.24μmol/g for As(Ⅴ))and ferrihydrite(42.26μmol/g for Cd(Ⅱ),and 248.25μmol/g for As(Ⅴ)).Cd(Ⅱ)adsorption increased in the presence of As(Ⅴ),possibly due to the changes in composite surface charge in the presence of As(Ⅴ),and the increased dispersion of ferrihydrite by *** microscopic and mechanistic results showed that Cd(Ⅱ)complexed with both biochar and ferrihydrite,while As(Ⅴ)was mainly complexed by ferrihydrite in the Cd(Ⅱ)and As(Ⅴ)coexistence *** posed vital importance for the co-adsorption of Cd(Ⅱ)and As(Ⅴ).The different distribution patterns revealed by this study help to a deeper understanding of the behaviors of cations and anions in the natural environment.

关键词： Ferrihydrite Biochar Cadmium Arsenate Simultaneous sequestration Binding mechanisms

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Transcriptomic and epigenomic landscapes of muscle growth during the postnatal period of broilers

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Journal of Animal Science and Biotechnology 2024年第5期15卷 1851-1865页

作者： Shuang Gu Qiang Huang Yuchen Jie Congjiao Sun Chaoliang Wen Ning Yang State Key Laboratory of Animal Biotech breeding and Frontier Science center for Molecular Design breeding China Agricultural UniversityBeijing 100193China national Engineering Laboratory for Animal breeding and Key Laboratory of Animal Genetics Breeding and ReproductionMinistry of Agriculture and Rural AffairsDepartment of Animal Genetics and BreedingCollege of Animal Science and Technology China Agricultural UniversityBeijing 100193China. Sanya Institute of China Agricultural University Hainan 572025China

Background Broilers stand out as one of the fastest-growing livestock globally,making a substantial contribution to animal meat ***,the molecular and epigenetic mechanisms underlying the rapid growth and development of broiler chickens are still *** study aims to explore muscle development patterns and regulatory networks during the postnatal rapid growth phase of fast-growing *** measured the growth performance of Cornish(CC)and White Plymouth Rock(RR)over a 42-d *** muscle samples from both CC and RR were randomly collected at day 21 after hatching(D21)and D42 for RNA-seq and ATAC-seq library *** The consistent increase in body weight and pectoral muscle weight across both breeds was observed as they matured,with CC outpacing RR in terms of weight at each stage of *** expression analysis identified 398 and 1,129 genes in the two dimensions of breeds and ages,respectively.A total of 75,149 ATAC-seq peaks were annotated in promoter,exon,intron and intergenic regions,with a higher number of peaks in the promoter and intronic *** age-biased genes and breed-biased genes of RNA-seq were combined with the ATAC-seq data for subsequent *** results spotlighted the upregulation of ACTC1 and FDPS at D21,which were primarily associated with muscle structure development by gene cluster ***,a noteworthy upregulation of MUSTN1,FOS and TGFB3 was spotted in broiler chickens at D42,which were involved in cell differentiation and muscle regeneration after injury,suggesting a regulatory role of muscle growth and *** This work provided a regulatory network of postnatal broiler chickens and revealed ACTC1 and MUSTN1 as the key responsible for muscle development and *** findings highlight that rapid growth in broiler chickens triggers ongoing muscle damage and subsequent *** findings provide a foundation for future research to i

关键词： ATAC-seq Broiler Pectoral muscle development Rapid growth RNA-seq

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Striking a growth–defense balance:Stress regulators that function in maize development

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Journal of Integrative Plant Biology 2024年第3期66卷 424-442页

作者： Shiyi Xie Hongbing Luo Wei Huang Weiwei Jin Zhaobin Dong Maize Engineering and Technology Research center of Hunan Province College of AgronomyHunan Agricultural UniversityChangsha 410128China State Key Laboratory of Maize Bio-breeding National Maize Improvement CenterFrontiers Science Center for Molecular Design BreedingChina Agricultural UniversityBeijing 100193China Tianjin Key Laboratory of Intelligent breeding of Major Crops Fresh Corn Research Center of BTHCollege of Agronomy&Resources and EnvironmentTianjin Agricultural UniversityTianjin 300384China

Maize(Zea mays)cultivation is strongly affected by both abiotic and biotic stress,leading to reduced growth and *** has recently become clear that regulators of plant stress responses,including the phytohormones abscisic acid(ABA),ethylene(ET),and jasmonic acid(JA),together with reactive oxygen species(ROS),shape plant growth and *** their well established functions in stress responses,these molecules play crucial roles in balancing growth and defense,which must be finely tuned to achieve high yields in crops while maintaining some level of *** this review,we provide an in-depth analysis of recent research on the developmental functions of stress regulators,focusing specifically on *** unraveling the contributions of these regulators to maize development,we present new avenues for enhancing maize cultivation and growth while highlighting the potential risks associated with manipulating stress regulators to enhance grain yields in the face of environmental challenges.

关键词： stress regulators maize development ABA ET JA ROS

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OsbZIP01 Affects Plant Growth and Development by Regulating OsSD1 in Rice

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Rice science 2024年第1期31卷 77-86,I0018,I0019页

作者： DONG Xinli ZHOU Yang ZHANG Yaqi RONG Fuxi DU Jiahong HONG Zheyuan HU Peisong LÜYusong College of Agriculture and Biotechnology Zhejiang UniversityHangzhou 310058China State Key Laboratory of Rice Biology and breeding/China national center for Rice Improvement China National Rice Research InstituteHangzhou 310006China

As the‘Green Revolution’gene,SD1(encoding GA20ox2),has been widely applied to improve yield in rice ***,research on its transcriptional regulation is ***,we identified a transcription factor OsbZIP01,which can suppress the expression of SD1 and regulate gibberellin(GA)biosynthesis in *** mutants of OsbZIP01 exhibited increased plant height,while the overexpression lines showed a semi-dwarf phenotype and diminished germination ***,the semi-dwarf phenotype of OE-bZIP01,was caused by the reduced internode length,which was accompanied by a thin stem *** predominant expression of OsbZIP01 was observed in leaves and ***01 protein was localized in the nucleus and showed transcriptional repression *** addition,OsbZIP01 could directly bind to the promoter of the OsSD1 gene,and inhibit its *** semi-dwarf phenotype of OE-bZIP01 could be rescued by exogenous GA_(3).Meanwhile,the bzip01 sd1 double mutant showed a shorter shoot length compared with the wild type,indicating that OsbZIP01 regulated plant growth mainly through the GA biosynthesis ***,OsbZIP01 negatively regulates GA biosynthesis by restraining SD1 transcription,thereby affecting plant growth and development.

关键词： OsbZIP01 SD1 gibberellin biosynthesis dwarf and germination

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