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2025年5月4日 星期日
农业生物技术学报  2023, Vol. 31 Issue (12): 2454-2465    DOI: 10.3969/j.issn.1674-7968.2023.12.002
  研究论文与报告 本期目录 | 过刊浏览 | 高级检索 |
陆地棉HD-ZIP_N基因家族的全基因组分析
叶泗洪1,*, 季美君2,*, 陈奇2, 冯群2, 王冬梅2, 孙萌2, 邓小楠1, 汪睿1, 韩文兵1, 汪保华2,**
1 安徽省农业科学院 棉花研究所,合肥 230001;
2 南通大学 生命科学学院,南通 226019
Genome-wide Analysis of the HD-ZIP_N Gene Family in Gossypium hirsutum
YE Si-Hong1,*, JI Mei-Jun2,*, CHEN Qi2, FENG Qun2, WANG Dong-Mei2, SUN Meng2, DENG Xiao-Nan1, WANG Rui1, HAN Wen-Bing1, WANG Bao-Hua2,**
1 Cotton Research Institute, Anhui Academy of Agricultural Science, Hefei 230001, China;
2 School of Life Sciences, Nantong University, Nantong 226019, China
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摘要 本课题组在前期研究中结合转录组测序和QTL定位鉴定到1个棉花(Gossypium)纤维强度候选基因Gh_D09G1210,该基因属于同源异型域-亮氨酸拉链(homeodomain-leucine zipper, HD-ZIP)_N基因家族。为了鉴定陆地棉(G. hirsutum) HD-ZIP_N基因家族成员并分析其在棉花纤维强度形成中的作用,本研究利用生物信息学方法对陆地棉HD-ZIP_N基因家族进行了全基因组分析;利用qPCR方法分析了开花后不同时期棉纤维中HD-ZIP_N基因的表达模式。在陆地棉基因组中鉴定到了18个HD-ZIP_N基因家族成员。保守基序(motif)分析及启动子序列分析表明,该基因家族成员具有高度相似的特征序列和结构域。基因进化树结果表明,该基因家族的成员可被分为3个亚类。根据染色体位置信息,HD-ZIP_N基因家族的成员分别定位在10条不同染色体上。非同义替换率/同义替换率(nonsynonymous substitution rate/synonymous substitution rate, Ka/Ks)值表明大部分同源基因都经过了纯化选择。基因共线性分析表明,分布于同源染色体上的HD-ZIP_N基因家族成员间具有较强的连锁关系。取开花后17和21 d的棉花纤维进行qPCR验证实验,结果表明,Gh_D11G0809Gh_D04G0859Gh_A11G0693这3个基因在纤维品质普通的'PD94042'和纤维品质优异的'IL9'中具有显著下调的趋势 (P<0.05),而在'IL9'中Gh_A09G1204有着显著上调的趋势(P<0.05),表明HD-ZIP_N基因家族成员在纤维强度发育过程中具有调节作用。本研究发现,HD-ZIP_N基因家族成员在陆地棉纤维强度发育过程中有一定的调节作用,可为分子育种改良棉花纤维强度提供基因资源。
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叶泗洪
季美君
陈奇
冯群
王冬梅
孙萌
邓小楠
汪睿
韩文兵
汪保华
关键词 陆地棉纤维强度同源异型域-亮氨酸拉链_N (HD-ZIP_N)全基因组分析    
Abstract:In previous research of our research group, a cotton (Gossypium) fiber strength candidate gene Gh_D09G1210 was identified by combining transcriptome sequencing and QTL mapping, which belongs to homeodomain-leucine zipper (HD-ZIP)__N gene family. The purpose of this study was to identify HD-ZIP_N gene family members in G. hirsutum and analyze their role in the formation of cotton fiber strength. Genome-wide analysis of HD-ZIP_N gene family in G. hirsutum was carried out, and the differential expression patterns of HD-ZIP_N genes in cotton fibers at different days post anthesis were analyzed by real-time quantitative PCR (qPCR). A total of 18 genes of the HD-ZIP_N gene family were identified in G. hirsutum genome conserved motif analysis and gene-promoter analysis showed that the gene family members had highly similar gene sequences and structural domains. The phylogenetic tree showed that all the gene family members could be divided into 3 subcategories. According to the gene location, HD-ZIP_N genes were located on 10 chromosomes in G. hirsutum genome. Most of the homologous genes had been purified and selected according to the Ka/Ks results. Collinearity analysis showed that the members of the HD-ZIP_N gene family distributed on homologous chromosomes had a strong connection. Cotton fibers of 17 and 21 d post-anthesis (dpa) were used to carry out qPCR verification experiments. The results showed that 3 genes Gh_D11G0809, Gh_D04G0859 and Gh_A11G0693 had a significant down-regulation trend in 'PD94042' with average fiber quality and 'IL9' with elite fiber quality (P<0.05), while Gh_A09G1204 had a significant up-regulation trend in 'IL9' (P<0.05), indicating that HD-ZIP_N gene family members had effects on regulation of fiber strength development. The findings of this study suggest that the HD-ZIP_N gene family members participate in regulating the development of G. hirsutum fiber strength, and provide genetic resources for improving cotton fiber strength through molecular breeding.
Key wordsGossypium hirsutum    Fiber strength    homeodomain-leucine zipper_N (HD-ZIP_N)    Genome-wide analysis
收稿日期: 2022-11-28     
ZTFLH:  S562  
基金资助:国家重点研发计划(2021YFE0101200); 安徽省农业科学院棉花种质创制与利用创新团队(2023YL005); 安徽省财政农业科技成果转化(2022ZH011); 南通大学大学生创新训练计划(202210304024Z)
通讯作者: **bhwang@ntu.edu.cn   
作者简介: *同等贡献作者
引用本文:   
叶泗洪, 季美君, 陈奇, 冯群, 王冬梅, 孙萌, 邓小楠, 汪睿, 韩文兵, 汪保华. 陆地棉HD-ZIP_N基因家族的全基因组分析[J]. 农业生物技术学报, 2023, 31(12): 2454-2465.
YE Si-Hong, JI Mei-Jun, CHEN Qi, FENG Qun, WANG Dong-Mei, SUN Meng, DENG Xiao-Nan, WANG Rui, HAN Wen-Bing, WANG Bao-Hua. Genome-wide Analysis of the HD-ZIP_N Gene Family in Gossypium hirsutum. 农业生物技术学报, 2023, 31(12): 2454-2465.
链接本文:  
https://journal05.magtech.org.cn/Jwk_ny/CN/10.3969/j.issn.1674-7968.2023.12.002     或     https://journal05.magtech.org.cn/Jwk_ny/CN/Y2023/V31/I12/2454
 
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