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| 1 | 广东省大豆种质资源遗传多样性分析及DNA分子身份证构建显示文摘【目的】对广东省大豆资源进行遗传多样性分析,筛选有效的SSR分子标记,以及构建快速鉴定的DNA分子身份证。【方法】收集了广东省19个市37个县市共96份大豆种质资源,提取基因组DNA后,利用30对SSR引物进行PCR扩增,通过测序检测获得相关多态性结果进行聚类分析以及DNA分子身份证构建,记录相关品种性状并转化为可视化信息。【结果】毛细管电泳检测结果表明,30对SSR引物在96份大豆材料之间均具有清晰稳定的多态性片段,共扩增出273个多态性等位变异片段,平均每对引物扩增出多态性等位变异片段数14.29个;不同引物揭示的多态性信息含量(PIC)的范围为0.3891~0.9310,平均值为0.6786,30对引物可用于区分广东大豆资源。通过聚类分析发现,所收集的大豆样品可以分为3个类群,具有遗传多样性。从PIC最高者开始进行引物组合,筛选出6对能将96份大豆区分开的引物。【结论】基于6对SSR引物扩增结果,对多态性片段排序,通过数字与英文结合编码,成功构建96份大豆资源的DNA分子身份证,为广东省大豆种质资源鉴定提供了重要依据。 | 李清 罗永坚 吴柔贤 贾俊婷 张文虎 宋松泉 刘军 | 2020 | 广东农业科学2020，47，12： | 15 |
| 2 | Molecular mechanisms for the photoperiodic regulation of flowering in soybean显示文摘Photoperiodic flowering is one of the most important factors affecting regional adaptation and yield in soybean(Glycine max). Plant adaptation to long-day conditions at higher latitudes requires early flowering and a reduction or loss of photoperiod sensitivity;adaptation to short-day conditions at lower latitudes involves delayed flowering, which prolongs vegetative growth for maximum yield potential. Due to the influence of numerous major loci and quantitative trait loci(QTLs), soybean has broad adaptability across latitudes. Forward genetic approaches have uncovered the molecular basis for several of these major maturity genes and QTLs. Moreover, the molecular characterization of orthologs of Arabidopsis thaliana flowering genes has enriched our understanding of the photoperiodic flowering pathway in soybean. Building on early insights into the importance of the photoreceptor phytochrome A, several circadian clock components have been integrated into the genetic network controlling flowering in soybean: E1, a repressor of FLOWERING LOCUS T orthologs, plays a central role in this network. Here, we provide an overview of recent progress in elucidating photoperiodic flowering in soybean, how it contributes to our fundamental understanding of flowering time control, and how this information could be used for molecular design and breeding of high-yielding soybean cultivars. | Xiaoya Lin Baohui Liu James LWeller Jun Abe Fanjiang Kong | 2021 | Journal of Integrative Plant Biology2021，63，6： | 11 |
| 3 | Soybean AP1 homologs control flowering time and plant height显示文摘Flowering time and plant height are key agronomic traits that directly affect soybean(Glycine max)yield.APETALA1(AP1)functions as a class A gene in the ABCE model for floral organ development,helping to specify carpel,stamen,petal,and sepal identities.There are four AP1 homologs in soybean,all of which are mainly expressed in the shoot apex.Here,we used clustered regularly interspaced short palindromic repeats(CRISPR)–CRISPR-associated protein 9 technology to generate a homozygous quadruple mutant,gmap1,with loss-of-function mutations in all four GmAP1 genes.Under short-day(SD)conditions,the gmap1 quadruple mutant exhibited delayed flowering,changes in flower morphology,and increased node number and internode length,resulting in plants that were taller than the wild type.Conversely,overexpression of GmAP1a resulted in early flowering and reduced plant height compared to the wild type under SD conditions.The gmap1 mutant and the overexpression lines also exhibited altered expression of several genes related to flowering and gibberellic acid metabolism,thereby providing insight into the role of GmAP1 in the regulatory networks controlling flowering time and plant height in soybean.Increased node number is the trait with the most promise for enhancing soybean pod number and grain yield.Therefore,the mutant alleles of the four AP1 homologs described here will be invaluable for molecular breeding of improved soybean yield. | Liyu Chen Haiyang Nan Lingping Kong Lin Yue Hui Yang Qingsong Zhao Chao Fang Haiyang Li Qun Cheng Sijia Lu Fanjiang Kong Baohui Liu Lidong Dong | 2020 | Journal of Integrative Plant Biology2020，62，12： | 9 |
| 4 | FT5a interferes with the Dt1-AP1 feedback loop to control flowering time and shoot determinacy in soybean显示文摘Flowering time and stem growth habit determine inflorescence architecture in soybean, which in turn influences seed yield. Dt1, a homolog of Arabidopsis TERMINAL FLOWER 1(TFL1), is a major controller of stem growth habit, but its underlying molecular mechanisms remain unclear.Here, we demonstrate that Dt1 affects node number and plant height, as well as flowering time,in soybean under long-day conditions. The b ZIP transcription factor FDc1 physically interacts with Dt1, and the FDc1-Dt1 complex directly represses the expression of APETALA1(AP1). We propose that FT5 a inhibits Dt1 activity via a competitive interaction with FDc1 and directly upregulates AP1. Moreover, AP1 represses Dt1 expression by directly binding to the Dt1 promoter, suggesting that AP1 and Dt1 form a suppressive regulatory feedback loop to determine the fate of the shoot apical meristem. These findings provide novel insights into the roles of Dt1 and FT5 a in controlling the stem growth habit and flowering time in soybean, which determine the adaptability and grain yield of this important crop. | Lin Yue Xiaoming Li Chao Fang Liyu Chen Hui Yang Jie Yang Zhonghui Chen Haiyang Nan Linnan Chen Yuhang Zhang Haiyang Li Xingliang Hou Zhicheng Dong James LWeller Jun Abe Baohui Liu Fanjiang Kong | 2021 | Journal of Integrative Plant Biology2021，63，6： | 3 |
| 5 | Modulation of evening complex activity enables north-to-south adaptation of soybean显示文摘Soybean,a typical short-day crop,is sensitive to photoperiod,which is a major limiting factor defining its north-to-south cultivation range.The long-juvenile(LJ)trait is controlled primarily by the J locus which has been used for decades by soybean breeders to delay flowering and improve grain yield in tropical regions.The J gene encodes an ortholog of the Arabidopsis Evening Complex(EC)component EARLY FLOWERING 3(ELF3).To identify modifiers of J,we conducted a forward genetic screen and isolated a mutant(eoj57)that in combination with j has longer flowering delay compared with j single mutant plants.Map-based cloning and genome re-sequencing identified eoj57(designated as GmLUX2)as an ortholog of the Arabidopsis EC component LUX ARRHYTHMO(LUX).To validate that GmLUX2 is a modifier of J,we used trans-complementation and identified a natural variant allele with a similar phenotype.We also show that GmLUX2 physically interacts with GmELF3a/b and binds DNA,whereas the mutant and natural variant are attenuated in both activities.Transcriptome analysis shows that the GmLUX2-GmELF3a complex co-regulates the expression of several circadian clock-associated genes and directly represses E1 expression.These results provide mechanistic insight into how GmLUX2-GmELF3 controls flowering time via synergistic regulation of gene expression.These novel insights expand our understanding of the regulation of the EC complex,and facilitate the development of soybean varieties adapted for growth at lower latitudes. | Xiaolong Fang Yapeng Han Mengshi Liu Jiacan Jiang Xiang Li Qichao Lian Xianrong Xie Yian Huang Qibin Ma Hai Nian Ji Qi Cunyi Yang Yingxiang Wang | 2021 | Science China(Life Sciences)2021，64，2： | 3 |
| 6 | SoySNP618K array:A high-resolution single nucleotide polymorphism platform as a valuable genomic resource for soybean genetics and breeding显示文摘Innovations in genomics have enabled the development of low-cost,high-resolution,single nucleotide polymorphism(SNP)genotyping arrays that accelerate breeding progress and support basic research in crop science.Here,we developed and validated the Soy SNP618 K array(618,888 SNPs)for the important crop soybean.The SNPs were selected from whole-genome resequencing data containing 2,214 diverse soybean accessions;29.34%of the SNPs mapped to genic regions representing 86.85%of the 56,044annotated high-confidence genes.Identity-by-state analyses of 318 soybeans revealed 17 redundant accessions,highlighting the potential of the Soy SNP618 K array in supporting gene bank management.The patterns of population stratification and genomic regions enriched through domestication were highly consistent with previous findings based on resequencing data,suggesting that the ascertainment bias in the Soy SNP618 K array was largely compensated for.Genome-wide association mapping in combination with reported quantitative trait loci enabled fine-mapping of genes known to influence flowering time,E2 and Gm PRR3 b,and of a new candidate gene,Gm VIP5.Moreover,genomic prediction of flowering and maturity time in 502 recombinant inbred lines was highly accurate(>0.65).Thus,the Soy SNP618 K array is a valuable genomic tool that can be used to address many questions in applied breeding,germplasm management,and basic crop research. | Yan-Fei Li Ying-Hui Li Shan-Shan Su Jochen CReif Zhao-Ming Qi Xiao-Bo Wang Xing Wang Yu Tian De-Lin Li Ru-Jian Sun Zhang-Xiong Liu Ze-Jun Xu Guang-Hui Fu Ya-Liang Ji Qing-Shan Chen Ji-Qiang Liu Li-Juan Qiu | 2022 | Journal of Integrative Plant Biology2022，64，3： | 0 |
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