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GmAP1d regulates flowering time under long-day photoperiods in soybean

The crop Journal 2024年第3期12卷 845-855页

作者： Shiyu Guo Yanfei Li Hongmei Qiu Guoyu Hu Chaosen Zhao Ruizhen Wang Hao Zhang Yu Tian Xiaoyu Li Bin Liu Ying-hui Li Li-juan Qiu College of Agriculture Northeast Agricultural UniversityHarbin 150030HeilongjiangChina State key laboratory of crop Gene resources and Breeding/The National key Facility for crop Gene resources and genetic Improvement(NFCRI)/key laboratory of grain crop genetic resources evaluation and utilization(MARA) Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Jilin Academy of Agricultural Sciences/National Engineering Research Center for Soybean Changchun 130033JilinChina crop Research Institute Anhui Academy of Agricultural SciencesHefei 230031AnhuiChina crops Research Institute of Jiangxi Academy of Agricultural Sciences/Jiangxi Province key laboratory of Oilcrops Biology Nanchang 330200JiangxiChina key Lab of Chinese Medicine resources Conservation State Administration of Traditional Chinese Medicine of the People’s Republic of ChinaInstitute of Medicinal Plant DevelopmentChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100193China

Flowering time is important for adaptation of soybean(Glycine max)to different environments.Here,we conducted a genome-wide association study of flowering time using a panel of 1490 cultivated soybean accessions.We identified three strong signals at the qFT02-2 locus(Chr02:12037319–12238569),which were associated with flowering time in three environments:Gongzhuling,Mengcheng,and Nanchang.By analyzing linkage disequilibrium,gene expression patterns,gene annotation,and the diversity of variants,we identified an AP1 homolog as the candidate gene for the qFT02-2 locus,which we named GmAP1d.Only one nonsynonymous polymorphism existed among 1490 soybean accessions at position Chr02:12087053.Accessions carrying the Chr02:12087053-T allele flowered significantly earlier than those carrying the Chr02:12087053-A allele.Thus,we developed a cleaved amplified polymorphic sequence(CAPS)marker for the SNP at Chr02:12087053,which is suitable for marker-assisted breeding of flowering time.Knockout of GmAP1d in the‘Williams 82’background by gene editing promoted flowering under long-day conditions,confirming that GmAP1d is the causal gene for qFT02-2.An analysis of the region surrounding GmAP1d revealed that GmAP1d was artificially selected during the genetic improvement of soybean.Through stepwise selection,the proportion of modern cultivars carrying the Chr02:12087053-T allele has increased,and this allele has become nearly fixed(95%)in northern China.These findings provide a theoretical basis for better understanding the molecular regulatory mechanism of flowering time in soybean and a target gene that can be used for breeding modern soybean cultivars adapted to different latitudes.

关键词： Soybean Flowering time GWAS GmAP1d Long-day conditions

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BoMyrosinase plays an essential role in sulforaphane accumulation in response to selenite treatment in broccoli

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Horticultural Plant Journal 2024年第2期10卷 488-502页

作者： Qiuyun Wu Qi Wu Yuxiao Tian Chunyan Zhou Shuxiang Mao Junwei Wang Ke Huang College of Horticulture Hunan Agricultural UniversityChangshaHunan 410128China Engineering Research Center for Horticultural crop Germplasm Creation and New Variety Breeding Ministry of EducationChangshaHunan 410128China key laboratory for Vegetable Biology of Hunan Province ChangshaHunan 410128China key laboratory for evaluation and utilization of Gene resources of Horticultural crops Ministry of Agriculture and Rural Affairs of ChinaChangshaHunan 410128China

Sulforaphane, a naturally specialized metabolite, plays significant roles in human disease prevention and plant defense. Myrosinase(MY) is a key gene responsible for the catalysis of sulforaphane formation, but the molecular mechanisms through which MY regulates sulforaphane biosynthesis in plants remains largely unknown. Here, we discovered that the change of sulforaphane content in broccoli sprouts caused by exogenous selenite treatments is positively related to BoMY expression. BoMY overexpression in the Arabidopsis thaliana tgg1 mutants could dramatically increase myrosinase activity and sulforaphane content in the rosette leaves of 35S::BoMY/tgg1 and rescue its phenotypes.Moreover, an obvious increase of myrosinase activity and sulforaphane content was displayed in transgenic BoMY-overexpressed broccoli lines.In addition, a 2 033 bp promoter fragment of BoMY was isolated. Yeast one-hybrid(Y1H) library screening experiment uncovered that one bHLH transcription factor, BoFAMA, could directly bind to BoMY promoter to activate its expression, which was further evidenced by Y1H assay and dual-luciferase reporter assay. BoFAMA is a selenite-responsive transcription factor that is highly expressed in broccoli leaves;its protein is solely localized to nucleus. Additionally, genetic evidence suggested that the knockdown of FAMA gene in Arabidopsis thaliana could significantly decrease sulforaphane yield by inhibiting the expression of myrosinase genes. Interestingly, exogenous selenite supply could partially restore the low level of sulforaphane content in transgenic Arabidopsis FAMA-silencing plants. Our findings uncover a novel function of FAMAMY module in the regulation of selenite-mediated sulforaphane synthesis and provide a new insights into the molecular mechanism by which selenite regulates the accumulation of sulforaphane in plants.

关键词： Brassica oleracea var.italica Myrosinase BoMY Sulforaphane Selenite treatment

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Blue revolution for food security under carbon neutrality: A case from the water-saving and drought-resistance rice

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Molecular Plant 2022年第9期15卷 1401-1404页

作者： Hui Xia Xianxian Zhang Yi Liu Junguo Bi Xiaosong Ma Anning Zhang Hongyan Liu Liang Chen Sheng Zhou Huan Gao Kai Xu Haibin Wei Guolan Liu Feiming Wang Hongyang Zhao Xingxing Luo Danping Hou Qiaojun Lou Fangjun Feng Liguo Zhou Shoujun Chen Ming Yan Tianfei Li Mingshou Li LeiWang Zaochang Liu Xinqiao Yu HanweiMei Lijun Luo Shanghai Collaborative Innovation Center of Agri-Seeds Shanghai Agrobiological Gene CenterShanghaiChina Shanghai Academy of Agricultural Sciences ShanghaiChina key laboratory of grain crop genetic resources evaluation and utilization Ministry of Agriculture and Rural AffairsShanghaiChina key laboratory of Low-carbon Green Agriculture in Southeastern China Ministry of Agriculture and Rural AffairsChina

The increasing concentration of greenhouse gases(GHGs)in Earth's atmosphere leads to global warming,which further causes a series of climate changes and does great harm to both human society and natural ecosystems.Agricultural GHG emissions,mainly in theform of methane(CH4)and nitrous oxide(N2O),areasignificantsourceofGHGs,accountingfor~14%total global GHGs(Zhang et al.,2022).One major source of agricultural GHGs is CH4 emissions from rice paddies,which is responsiblefor~10%-12%ofhuman-inducedCH4emissions(van Groenigen et al.,2013)and contributes~2.40%to the enhanced global warming effect(Zhang et al.,2022).The global warming potential of GHGs emissions from rice systems is roughly four times higher than either wheat or maize(Linquist et al.,2012).

关键词： drought neutral resistance

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Polyamine oxidase 3 is involved in salt tolerance at the germination stage in rice

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Journal of genetics and Genomics 2022年第5期49卷 458-468页

作者： Guangyu Liu Wanxia Jiang Lei Tian Yongcai Fu Lubin Tan Zuofeng Zhu Chuanqing Sun Fengxia Liu State key laboratory of Plant Physiology and Biochemistry China Agricultural UniversityBeijing 100193China National Center for evaluation of Agricultural Wild Plants(Rice) Beijing Key Laboratory of Crop Genetic ImprovementLaboratory of Crop Heterosis and UtilizationMOEDepartment of Plant Genetics and BreedingChina Agricultural UniversityBeijing 100193China

Soil salinity inhibits seed germination and reduces seedling survival rate,resulting in significant yield reductions in crops.Here,we report the identification of a polyamine oxidase,OsPAO3,conferring salt tolerance at the germination stage in rice(Oryza sativa L.),through map-based cloning approach.OsPAO3 is up-regulated under salt stress at the germination stage and highly expressed in various organs.Overexpression of OsPAO3 increases activity of polyamine oxidases,enhancing the polyamine content in seed coleoptiles.Increased polyamine may lead to the enhance of the activity of ROS-scavenging enzymes to eliminate over-accumulated H;O;and to reduce Na;content in seed coleoptiles to maintain ion homeostasis and weaken Na;damage.These changes resulted in stronger salt tolerance at the germination stage in rice.Our findings not only provide a unique gene for breeding new salt-tolerant rice cultivars but also help to elucidate the mechanism of salt tolerance in rice.

关键词： Polyamine oxidase OsPAO3 Salt tolerance Germination stage Rice

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TaMADS29 interacts with TaNF-YB1 to synergistically regulate early grain development in bread wheat

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Science China(Life Sciences) 2023年第7期66卷 1647-1664页

作者： Guoyu Liu Runqi Zhang Sen Li Rehmat Ullah Fengping Yang Zihao Wang Weilong Guo Mingshan You Baoyun Li Chaojie Xie Liangsheng Wang Jie Liu Zhongfu Ni Qixin Sun Rongqi Liang Frontiers Science Center for Molecular Design Breeding(MOE) State Key Laboratory for AgrobiotechnologyState Key Laboratory of Plant Physiology and BiochemistryKey Laboratory of Crop Heterosis and Utilization(MOE)and Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing100193China

grain development is a crucial determinant of yield and quality in bread wheat(Triticum aestivum L.).However,the regulatory mechanisms underlying wheat grain development remain elusive.Here we report how Ta MADS29 interacts with Ta NF-YB1 to synergistically regulate early grain development in bread wheat.The tamads29 mutants generated by CRISPR/Cas9 exhibited severe grain filling deficiency,coupled with excessive accumulation of reactive oxygen species(ROS)and abnormal programmed cell death that occurred in early developing grains,while overexpression of Ta MADS29 increased grain width and1,000-kernel weight.Further analysis revealed that Ta MADS29 interacted directly with Ta NF-YB1;null mutation in Ta NF-YB1caused grain developmental deficiency similar to tamads29 mutants.The regulatory complex composed of Ta MADS29 and Ta NF-YB1 exercises its possible function that inhibits the excessive accumulation of ROS by regulating the genes involved in chloroplast development and photosynthesis in early developing wheat grains and prevents nucellar projection degradation and endosperm cell death,facilitating transportation of nutrients into the endosperm and wholly filling of developing grains.Collectively,our work not only discloses the molecular mechanism of MADS-box and NF-Y TFs in facilitating bread wheat grain development,but also indicates that caryopsis chloroplast might be a central regulator of grain development rather than merely a photosynthesis organelle.More importantly,our work offers an innovative way to breed high-yield wheat cultivars by controlling the ROS level in developing grains.

关键词： chloroplast grain filling reactive oxygen species TaMADS29 TaNF-YB1 wheat(Triticum aestivum L.)

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The domestication-associated L1 gene encodes a eucomic acid synthase pleiotropically modulating pod pigmentation and shattering in soybean

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Molecular Plant 2023年第7期16卷 1178-1191页

作者： Xiangguang Lyu Ying-hui Li Yanfei Li Delin Li Chao Han Huilong Hong Yu Tian Lida Han Bin Liu Li-juan Qiu The National key Facility for crop Gene resources and genetic Improvement(NFCRI) Institute of Crop ScienceChinese Academy of Agricultural SciencesBeijingP.R.China key laboratory of grain crop genetic resources evaluation and utilization Institute of Crop ScienceChinese Academy of Agricultural SciencesBeijingP.R.China Biotechnology Research Institute Chinese Academy of Agricultural SciencesBejingP.R.China key Lab of Chinese Medicine resources Conservation State Administration of Traditional Chinese Medicine of the People's Republic of ChinaInstitute of Medicinal Plant DevelopmentChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijingP.R.China

Pod coloration is a domestication-related trait in soybean,with modern cultivars typically displaying brown or tan pods,while their wild relative,Glycine soja,possesses black pods.However,the factors regulating this color variation remain unknown.In this study,we cloned and characterized L1,the classical locus responsible for black pods in soybean.By using map-based cloning and genetic analyses,we identified the causal gene of L1 and revealed that it encodes a hydroxymethylglutaryl-coenzyme A(CoA)lyase-like(HMGL-like)domain protein.Biochemical assays showed that L1 functions as a eucomic acid synthase and facilitates the synthesis of eucomic acid and piscidic acid,both of which contribute to coloration of pods and seed coats in soybean.Interestingly,we found that L1 plants are more prone to pod shattering under light exposure than l1 null mutants because dark pigmentation increases photothermal efficiency.Hence,pleiotropic effects of L1 on pod color and shattering,as well as seed pigmentation,likely contributed to the preference forl1 alleles during soybean domestication and improvement.Collectively,our study provides new insights into the mechanism of pod coloration and identifies a new target for future de novo domestication oflegume crops.

关键词： soybean domestication pod pigmentation pod shattering pleiotropic effects

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genetic Dissection of Quantitative Trait Loci for Panicle Traits and Heat Tolerance by High-Density Bin Map in Rice

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Rice science 2022年第6期29卷 507-511,I0007-I0020页

作者： LIU Hongyan MA Xiaosong LI Enxi ZENG Xianjun LUO Lijun Shanghai Agrobiological Gene Center Shanghai 201106China key laboratory of grain crop genetic resources evaluation and utilization Ministry of Agriculture and Rural AffairsShanghai 201106China Hainan University Haikou 570228China Huazhong Agricultural University Wuhan 430070China

A recombinant inbred line(RIL)with 179 lines derived from a cross between a heat tolerant line Huhan 1B and a heat sensitive line Hanhui 3 was used for QTL mapping for panicle traits and heat tolerance.A total of 52 QTLs were identified with LOD scores from 3.85 to 54.93,each explaining 0.70%to 21.48%of the phenotypic variances,including 11 for panicle length(PL),11 for seed number per panicle(SN),14 for spikelet number per panicle(SNPP),6 for seed-setting rate(SSR)under normal conditions,and 5 for seed-setting rate(SSR_HT)and 5 for relative seed-setting rate(RSSR)under heat stress,respectively.

关键词： panicle Traits Map

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A single nucleotide substitution in the MATE transporter gene regulates plastochron and the many noded dwarf phenotype in barley(Hordeum vulgare L.)

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Journal of Integrative Agriculture 2023年第8期22卷 2295-2305页

作者： GUO Bao-jian SUN Hong-wei QI Jiang HUANG Xin-yu HONG Yi HOU Jian Lü Chao WANG Yu-lin WANG Fei-fei ZHU Juan GUO Gang-gang XU Ru-gen Jiangsu key laboratory of crop Genomics and Molecular Breeding/key laboratory of Plant Functional Genomics Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain CropsYangzhou UniversityYangzhou 225009P.R.China State key laboratory of Barley and Yak Germplasm resources and genetic Improvement/Tibet Academy of Agricultural and Animal Husbandry Sciences(TAAAS) Lhasa 850002P.R.China key laboratory of crop Germplasm resources and utilization Ministry of Agriculture/National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081P.R.China

In higher plants,the shoot apical meristem produces lateral organs in a regular spacing(phyllotaxy)and timing(plastochron).The molecular analysis of mutants associated with phyllotaxy and plastochron would increase our understanding of the mechanism of shoot architecture formation.In this study,we identified mutant mnd8ynp5 that shows an increased rate of leaf emergence and a larger number of nodes in combination with a dwarfed growth habit from an EMS-treated population of the elite barley cultivar Yangnongpi 5.Using a map-based cloning strategy,the mnd8 gene was narrowed down to a 6.7-kb genomic interval on the long arm of chromosome 5H.Sequence analysis revealed that a C to T single-nucleotide mutation occurred at the first exon(position 953)of HORVU5Hr1G118820,leading to an alanine(Ala)to valine(Val)substitution at the 318th amino acid site.Next,HORVU5Hr1G118820 was defined as the candidate gene of MND8 encoding 514 amino acids and containing two multidrug and toxic compound extrusion(MATE)domains.It is highly homologous to maize Bige1and has a conserved function in the regulation of plant development by controlling the leaf initiation rate.Examination of modern barely varieties showed that Hap-1 was the dominant haplotype and was selected in barley breeding around the world.Collectively,our results indicated that mnd8ynp5 is a novel allele of the HORVU5Hr1G118820 gene that is possibly responsible for the shortened plastochron and many noded dwarf phenotype in barley.

关键词： barley EMS plastochron many noded dwarf MATE transporter shoot architecture

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genetic analysis and gene mapping of a dwarf and liguleless mutation in barley

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The crop Journal 2022年第4期10卷 1094-1102页

作者： Baojian Guo Jiang Qi Dongfang Li Hongwei Sun Chao Lyu Feifei Wang Juan Zhu Ganggang Guo Rugen Xu Jiangsu key laboratory of crop Genomics and Molecular Breeding/key laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu key laboratory of crop genetics and Physiology Jiangsu Co-Innovation Center for Modern Production Technology of Grain CropsYangzhou UniversityYangzhou 225009JiangsuChina Joint International Research laboratory of Agriculture and Agri-Product Safety The Ministry of Education of ChinaYangzhou UniversityYangzhou 225009JiangsuChina key laboratory of crop Germplasm resources and utilization(MOA) The National Key Facility for Crop Gene Resources and Genetic ImprovementInstitute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China

Leaf development underlies crop growth and productivity and has been a major target of crop domestication and improvement.However,most genes controlling leaf development in barley remain unknown.We identified a dwarf and liguleless(dl)mutant derived by ethylmethane sulfonate mutagenesis.The dl mutant showed dramatic changes in shoot architecture compared with wild-type(Yangnongpi 5)plants.Besides lacking ligules,the dl mutant showed much shorter plant height(28 cm)than Yangnongpi 5(78 cm).By map-based cloning,the dl gene was localized to a 56.58-kb genomic interval on the long arm of chromosome 7.A C-to-T single-nucleotide substitution was identified at exon position 790,and is a functional mutation resulting in a proline-to-serine substitution at the 264th amino acid residue of HORVU7Hr1G106960.Consequently,HORVU7Hr1G106960 was identified as the DL gene,encoding 269 amino acids and containing the Arabidopsis LSH1 and Oryza G1(ALOG)domain.DL is highly similar to rice OsG1-LIKE 1/2(OsG1L1/2)and sorghum AWN1/AWN1-10 at the amino acid level.Although the dl mutant allele showed no expression changes in selected tissues by real-time PCR,we propose HORVU7Hr1G106960 as a candidate gene conferring the dwarf and liguleless phenotype in barley.

关键词： Barley EMS Liguleless ALOG Shoot architecture

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Coordinating gibberellin and brassinosteroid signaling beyond Green Revolution

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Journal of genetics and Genomics 2023年第7期50卷 459-461页

作者： Hongning Tong Chengcai Chu National key Facility for crop Gene resources and genetic Improvement Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Guangdong laboratory for Lingnan Modern Agriculture State Key Laboratory for Conservation and Utilization of Subtropical Agro-BioresourcesCollege of AgricultureSouth China Agricultural UniversityGuangzhouGuangdong 510642China

The Green Revolution,which took place in the 1960s,was instrumental in increasing grain yields and mitigating the world’s food crisis.Breeding semi-dwarfing crops was a critical activity that significantly improved lodging resistance,field management,and harvesting convenience.Subsequent molecular genetic studies revealed that the semi-dwarfing genes used in rice and wheat,two major staple crops,are related to the plant hormone gibberellin(GA).In rice,SD1 encodes a defective GA synthetic enzyme GA20ox-2,while in wheat,Rht-1(Rht-B1b or Rht-D1b)encodes the gain-of-function form of the GA signaling inhibitors known as DELLA proteins(Peng et al.,1999;Sasaki et al.,2002).However,defects in either GA synthesis or signaling can decrease nitrogen use efficiency(NUE)and potentially lead to inferior grain development.Ultimately,the success of the Green Revolution relies heavily on the massive input of nitrogen fertilizer,which causes severe environmental issues.

关键词： Wheat BR GA Green Revolution

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