Cottons are the most important fiber crops in the world.The cotton genus Gossypium has 52 species,including seven allotetraploid species and 45 diploids.Four species were domesticated and remain as crops under cultiva...Cottons are the most important fiber crops in the world.The cotton genus Gossypium has 52 species,including seven allotetraploid species and 45 diploids.Four species were domesticated and remain as crops under cultivation today:the New World allopolyploid species G.hirsutum and G.barbadense(2n=52),and the Old World diploid species G.arboreum and G.herbaceum(2n=26).The primary cultivated species is Upland cotton(G.hirsutum L.),which accounts for more than 90%of global cotton fiber production.展开更多
miRNA(microRNA)是一类21～24个核酸长度的非编码小分子RNA(sRNA),它主要通过抑制或降解靶基因来调控植物生长发育等过程。试验利用在纤维长度上有显著差异的2个回交自交系BILs(Backcrossinbred lines)的0 DPA(Days post anthesis)、3 ...miRNA(microRNA)是一类21～24个核酸长度的非编码小分子RNA(sRNA),它主要通过抑制或降解靶基因来调控植物生长发育等过程。试验利用在纤维长度上有显著差异的2个回交自交系BILs(Backcrossinbred lines)的0 DPA(Days post anthesis)、3 DPA的胚珠和10 DPA的纤维构建6个sRNA文库并进行Solexa测序。以已公布的棉花D5基因组序列和棉属其他序列为参考,经分析共发现561个miRNAs,其中包括254个已知的miRNAs(属于40个miRNA家族),75个候选的miRNAs和232个新的miRNAs,研究结果极大地丰富了棉属miRNAs。通过miRNA靶基因预测分析发现多数miRNAs负调控其对应的靶基因,少数正调控。KEGG(Kyoto encyclopedia of genes and genomes)注释结果表明miRNA的靶基因在植物激素代谢途径中显著富集。展开更多
Due to the economic value of natural textile fiber, cotton has attracted much research attention, which has led to the publication of two diploid genomes and two tetraploid genomes. These big data facilitate functiona...Due to the economic value of natural textile fiber, cotton has attracted much research attention, which has led to the publication of two diploid genomes and two tetraploid genomes. These big data facilitate functional genomic study in cotton, and allow researchers to investigate cotton genome structure, gene expression, and protein function on the global scale using high-throughput methods. In this review, we summarized recent studies of cotton genomes. Population genomic analyses revealed the domestication history of cultivated upland cotton and the roles of transposable elements in cotton genome evolution.Alternative splicing of cotton transcriptomes was evaluated genome-widely. Several important gene families like MYC, NAC, Sus and GhPLDal were systematically identified and classified based on genetic structure and biological function. High-throughput proteomics also unraveled the key functional proteins correlated with fiber development. Functional genomic studies have provided unprecedented insights into global-scale methods for cotton research.展开更多
基金supported by Chinese Academy of Sciences (XDB11030000)Ministry of Science and Technology of China and Ministry of Agriculture of China (2013CB127000, 2016YFA0500800, 2016ZX08009001-009, 2016ZX08005001-001)National Natural Science Foundation of China (31690092)
文摘Cottons are the most important fiber crops in the world.The cotton genus Gossypium has 52 species,including seven allotetraploid species and 45 diploids.Four species were domesticated and remain as crops under cultivation today:the New World allopolyploid species G.hirsutum and G.barbadense(2n=52),and the Old World diploid species G.arboreum and G.herbaceum(2n=26).The primary cultivated species is Upland cotton(G.hirsutum L.),which accounts for more than 90%of global cotton fiber production.
文摘miRNA(microRNA)是一类21～24个核酸长度的非编码小分子RNA(sRNA),它主要通过抑制或降解靶基因来调控植物生长发育等过程。试验利用在纤维长度上有显著差异的2个回交自交系BILs(Backcrossinbred lines)的0 DPA(Days post anthesis)、3 DPA的胚珠和10 DPA的纤维构建6个sRNA文库并进行Solexa测序。以已公布的棉花D5基因组序列和棉属其他序列为参考,经分析共发现561个miRNAs,其中包括254个已知的miRNAs(属于40个miRNA家族),75个候选的miRNAs和232个新的miRNAs,研究结果极大地丰富了棉属miRNAs。通过miRNA靶基因预测分析发现多数miRNAs负调控其对应的靶基因,少数正调控。KEGG(Kyoto encyclopedia of genes and genomes)注释结果表明miRNA的靶基因在植物激素代谢途径中显著富集。
基金supported by the Natural Science Foundation of China(Nos.21602162 and 31690090)the National Science and Technology Major Project(No.2016ZX08005003-001)the Fundamental Research Funds for the Central Universities(No.104862016)
文摘Due to the economic value of natural textile fiber, cotton has attracted much research attention, which has led to the publication of two diploid genomes and two tetraploid genomes. These big data facilitate functional genomic study in cotton, and allow researchers to investigate cotton genome structure, gene expression, and protein function on the global scale using high-throughput methods. In this review, we summarized recent studies of cotton genomes. Population genomic analyses revealed the domestication history of cultivated upland cotton and the roles of transposable elements in cotton genome evolution.Alternative splicing of cotton transcriptomes was evaluated genome-widely. Several important gene families like MYC, NAC, Sus and GhPLDal were systematically identified and classified based on genetic structure and biological function. High-throughput proteomics also unraveled the key functional proteins correlated with fiber development. Functional genomic studies have provided unprecedented insights into global-scale methods for cotton research.
