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Allopolyploidization increases genetic recombination in the ancestral diploid D genome during wheat evolution

The Crop Journal 2022年第3期10卷 743-753页

作者： Hongshen Wan Jun Li shengwei ma Fan Yang Liang Chai Zehou Liu Qin Wang Zongjun Pu Wuyun Yang Crop Research Institute Sichuan Academy of Agricultural SciencesChengdu 610066SichuanChina Key Laboratory of Wheat Biology and Genetic Improvement on Southwestern China Ministry of Agriculture and Rural AffairsChengdu 610066SichuanChina The Applied Plant Genomics Lab College of Agricultural SciencesNanjing Agricultural UniversityNanjing 210095JiangsuChina Triticeae Research Institute Sichuan Agricultural UniversityChengdu 611130SichuanChina

Genetic recombination produces new allelic combinations,thereby introducing variation for *** has increased the evolutionary potential of hexaploid common wheat by conferring the advantages of heterosis and gene redundancy,but whether a relationship exists between allopolyploidization and genetic recombination is currently *** study the impact of allopolyploid ization on genetic recombination in the ancestral D genome of wheat,we generated new synthetic hexaploid wheats by crossing tetraploid Triticum turgidum with multiple diploid Aegilops tauschii accessions,with subsequent chromosome doubling,to simulate the evolutionary hexaploidization *** the DArT-Seq approach,we determined the genotypes of two new synthetic hexaploid wheats with their parents,F;plants in a diploid population(2 x,D_(1)D_(1)×D_(2)D_(2))and its new synthetic hexaploid wheatderived population(6 x,AABBD_(1)D_(1)×AABBD_(2)D_(2)).About 11%of detected SNP loci spanning the D genome of *** were eliminated after allohexaploidization,and the degree of segregation distortion was increased in their hexaploid offspring from the F_(1) *** on codominant genotypes,the mean genetic interval length and recombination frequency between pairs of adjacent and linked SNPs on D genome of the hexaploid F;population were 2.3 fold greater than those in the diploid F_(2) population,and the recombination frequency of *** was increased by their hexaploidization with *** conclusion,allopolyploidization increases genetic recombination of the ancestral diploid D genome of wheat,and DNA elimination and increased segregation distortion also occur after *** genetic recombination could have produced more new allelic combinations subject to natural or artificial selection,helping wheat to spread rapidly to become a major global crop and thereby accelerating the evolution of wheat via hexaploidization.

关键词： Synthetic wheat Hexaploidization Diploid D genome Genetic recombination Acceleration of evolution

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DYNAMIC　VARIATIONS　OF　WATER　QUALITY　IN　TAIHU　LAKE　AND　MULTIVARIATE　ANALYSIS　OF　ITS　INFLUENTIAL　FACTORS

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Chinese Geographical Science 1996年第4期6卷 364-374页

作者： Qiming Cai Xiyun Gao Yuwei Chen shengwei ma Dokulil martin Nanjing Institute of Geography and Limnology the Chinese Academy of Sciences Nanjing PRC Institute of Limnology Austria

ＤＹＮＡＭＩＣ　ＶＡＲＩＡＴＩＯＮＳ　ＯＦ　ＷＡＴＥＲ　ＱＵＡＬＩＴＹ　ＩＮ　ＴＡＩＨＵ　ＬＡＫＥ　ＡＮＤ　ＭＵＬＴＩＶＡＲＩＡＴＥ　ＡＮＡＬＹＳＩＳ　ＯＦ　ＩＴＳ　ＩＮＦＬＵＥＮＴＩＡＬ　ＦＡＣＴＯＲＳＤＹＮＡＭＩ... 详细信息

ＤＹＮＡＭＩＣ　ＶＡＲＩＡＴＩＯＮＳ　ＯＦ　ＷＡＴＥＲ　ＱＵＡＬＩＴＹ　ＩＮ　ＴＡＩＨＵ　ＬＡＫＥ　ＡＮＤ　ＭＵＬＴＩＶＡＲＩＡＴＥ　ＡＮＡＬＹＳＩＳ　ＯＦ　ＩＴＳ　ＩＮＦＬＵＥＮＴＩＡＬ　ＦＡＣＴＯＲＳＤＹＮＡＭＩＣＶＡＲＩＡＴＩＯＮＳＯＦＷＡＴＥ...

关键词： Taihu Lake dynamic variation of water quality principal component analysis

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WheatOmics:A platform combining multiple omics data to accelerate functional genomics studies in wheat

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Molecular Plant 2021年第12期14卷 1965-1968页

作者： shengwei ma Meng Wang Jianhui Wu Weilong Guo Yongming Chen Guangwei Li Yanpeng Wang Weiming Shi Guangmin Xia Daolin FU Zhensheng Kang Fei Ni State Key Laboratory of Crop Genetics and Germplasm Enhancement Nanjing Agricultural UniversityNanjing 210095China State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China State Key Laboratory of Crop Biology College of AgronomyShandong Agricultural UniversityTaian 271018China State Key Laboratory of Crop Stress Biology for Arid Areas College of AgronomyNorthwest A&F UniversityYangling 712100China State Key Laboratory for Agrobiotechnology Key Laboratory of Crop Heterosis and UtilizationBeijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing 100193China College of Agronomy Longzi Lake CampusHenan Agricultural UniversityZhengzhou 450046China State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental Biologythe Innovative Academy of Seed DesignChinese Academy of SciencesBeijing 100101China The Key Laboratory of Plant Development and Environment Adaptation Biology Ministry of EducationSchool of Life ScienceShandong UniversityQingdao 266237China

Dear Editor,Mold-breaking progress in whole-genome sequencing and rapid accumulation of multi-omics data have revolutionized the research strategies of functional genomics in wheat(Wang et al.,2018).However,how to access these vast multi-omics data and to extract key information on genes of in-terest,is still challenging for most wet-lab or field wheat re-searchers who have little bioinformatic experiences and cannot access the expensive computational ***,we pre-sent WheatOmics(http://***/,previously designated as Triticeae Multi-omics Center,http://202.***.139.32/),a free,web-accessible,and user-friendly *** not only empowers the effective access to the visualized multi-omics data of user-interested genes but also offers several distinctive and practical toolkits that can ease almost every aspect of wheat functional genomics studies(Figure 1A).

关键词： Wheat functional Figure

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A wheat integrative regulatory network from large-scale complementary functional datasets enables trait-associated gene discovery for crop improvement

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Molecular Plant 2023年第2期16卷 393-414页

作者： Yongming Chen Yiwen Guo Panfeng Guan Yongfa Wang Xiaobo Wang Zihao Wang Zhen Qin shengwei ma Mingming Xin Zhaorong Hu Yingyin Yao Zhongfu Ni Qixin Sun Weilong Guo Huiru Peng Frontiers Science Center for Molecular Design Breeding Key Laboratory of Crop Heterosis and UtilizationBeijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing 100193China Hainan Yazhou Bay Seed Laboratory SanyaHainanChina State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina

Gene regulation is central to all aspects of organism growth,and understanding it using large-scale functional datasets can provide a whole view of biological processes controlling complex phenotypic traits in ***,the connection between massive functional datasets and trait-associated gene discovery for crop improvement is still *** this study,we constructed a wheat integrative gene regulatory network(wGRN)by combining an updated genome annotation and diverse complementary functional datasets,including gene expression,sequence motif,transcription factor(TF)binding,chromatin accessibility,and evolutionarily conserved *** contains 7.2 million genome-wide interactions covering 5947 TFs and 127439 target genes,which were further verified using known regulatory relationships,condition-specific expression,gene functional information,and *** used wGRN to assign genome-wide genes to 3891 specific biological pathways and accurately prioritize candidate genes associated with complex phenotypic traits in genome-wide association *** addition,wGRN was used to enhance the interpretation of a spike temporal transcriptome dataset to construct high-resolution *** further unveiled novel regulators that enhance the power of spike phenotypic trait prediction using machine learning and contribute to the spike phenotypic differences among modern wheat ***,we developed an interactive webserver,wGRN(http://***/wGRN),for the community to explore gene regulation and discover trait-associated ***,this community resource establishes the foundation for using large-scale functional datasets to guide trait-associated gene discovery for crop improvement.

关键词： wheat integrative gene regulatory network functional gene discovery phenotype prediction crop improvement

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Identification of a novel class of seed development-related proline-rich protein genes in Wheat

Identification of a novel class of seed development-related ...

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第六届全国小麦基因组学及分子育种大会

作者： Haiyan Jia Shirong Liu shengwei ma Li ma Zhengqiang ma The Applied Plant Genomics Lab Crop Genomics and Bioinformatics CenterNanjing Agricultural University

Yield formation of plants are governed by a large network of genes under complicated regulation,for which our understanding is still at the infant *** this study,a novel class of seed development-related proline-rich protein(PRP)genes,consisting of at least four homologs,was identified in ***,they are distinct from the previously described five classes of plant ***-quantitative RT-PCR showed that these wheat PRPs were mainly expressed in reproductive organs,and their expression levels were reduced gradually as the seeds *** of these genes,TaPRP.1,were fused to a Actin1 promoter and transformed into a wheat cultivar through particle *** transgenic lines had significantly higher unit grain weight than the non-transgenic control in three different trials and showed a higher level of TaPRP.1expression.

关键词： wheat proline-rich protein grain weight

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DYNAMIC VARIATIONS OF WATER QUALITY IN TAIHU LAKE AND MULTIVARIATE ANALYSIS OF ITS INFLUENTIAL FACTORS

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Journal of Geographical Sciences 1997年第3期7卷 72-82页

作者： Cai Qiming Gao Xiyun Chen Yuwei ma shengwei Nanjing Institute of Geography and Limnology, CAS, Nanjing 210008 People’s Republic of Chinamartin Dokulil Institute of Limnology, Austria

Dynamic variation of water quality in Meiliang Bay and part of West Taihu Lake has been analysed based on data from 1991 to 1992. Principal Component Analysis is used to reveal the mutual relationships of various factors. It is shown that there existis an obvious spatial and temporal variation in the main factors of water quality. Annual values of TP, CON, TN, Chl-a and conductivity decrease evidently from inner Meiliang Bay to the outer from north to south. TP and TN fluctuate seasonally with much higher value in winter. This is particularly true for the mouth of Liangxi River. In addition, the Chl-1 has a synchronous variation with water temperature, although being lagged a little, and closely relates to TP and TN. Finally, the results from Principal Component Analysis show that TP, TN, SS (or SD), water temperature and Chl-a are the most influential factors to water qualuty in this area, and both suspensions and algae can contribute to transparency to Taihu Lake.

关键词： Taihu Lake dynamic variation water quality principal component analysis.

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浅水湖泊TP分布的迎风有限元数值模型研究

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环境科学研究 1999年第5期12卷 56-59页

作者：马生伟蔡启铭云南省环境科学研究所中国科学院南京地理与湖泊研究所

从控制方程出发，以Ｇａｌｅｒｋｉｎ有限元法为基础，结合有限元法的较新改进，推导、建立了一个适合于浅水湖泊ＴＰ浓度分布计算的二维迎风有限元的数值模型，并将其应用于太湖。

关键词：总磷数值模拟迎风有限元法太湖湖泊污染

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抚仙湖流域综合治理规划方案研究

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环境科学研究 1999年第5期12卷 16-19页

作者：张秀敏马生伟云南省环境科学研究所

从整个抚仙湖流域出发，根据抚仙湖主要环境问题，提出污染综合治理总体方案设计，在此基础上根据湖泊环境保护目标、流域内重点控制区的污染特征、入湖主要污染物的总量控制。

关键词：综合治理方案抚仙湖流域湖泊污染

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某核电厂未能紧急停堆的预期瞬态解析

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无线互联科技 2016年第14期13卷 85-87页

作者：马省委福建福清核电有限公司福建福清350318

文章对某电厂未能紧急停堆的预期瞬态(ATWT)从其产生背景、引起相关动作、ATWT的预防及响应措施作了解析,并介绍了若干事例,便于大家认识和了解ATWT。

关键词： ATWT 事件反应堆保护系统

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磁异常及其磁梯度数据自结构约束反演方法及在煤田火烧区勘查的应用

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地球物理学进展 2024年第3期39卷 1026-1037页

作者：马国庆马生玮李丽丽蔡锦吉林大学地球探测科学与技术学院长春130021

随着航磁测量技术的发展,航磁可以开展原始场以及梯度场的测量,梯度场具有更高的分辨率,因此其组合测量得到广泛应用.为了有效提取出地下地质体高分辨率的物性结构,基于磁及磁梯度来获取更高分辨率结果,开发了自结构约束磁及磁梯度协同... 详细信息

随着航磁测量技术的发展,航磁可以开展原始场以及梯度场的测量,梯度场具有更高的分辨率,因此其组合测量得到广泛应用.为了有效提取出地下地质体高分辨率的物性结构,基于磁及磁梯度来获取更高分辨率结果,开发了自结构约束磁及磁梯度协同反演方法,其利用单分量数据的反演结果作为不同参量数据联合反演的结构约束项,从而有效以不同数据的分辨率特征为约束来获得更加准确的结果.此外,基于非结构四面体网格具有良好的地形和非规则地质体的适用性以及分辨率的优势,建立了基于非结构四面体网格的协同反演方法.模型试验表明,非结构四面体网格的协同反演方法对于地下场源恢复的精度更高.并将该方法用于活鸡兔井火烧去边界的刻画,通过两次航磁测量表明,该火烧区依然处于燃烧状态且以约0.5 m/天的速度在水平方向和竖直方向发展.

关键词：磁及磁梯度协同反演非结构网格自结构约束反演航磁测量火烧区

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