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鉴定 中的组蛋白 H3() 基因在胚珠发育和应激反应过程中的多样化表达。

Identification of Histone H3 () Genes in Revealed Diverse Expression During Ovule Development and Stress Responses.

机构信息

State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China.

Zhengzhou Reseach Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou 4550001, China.

出版信息

Genes (Basel). 2019 May 9;10(5):355. doi: 10.3390/genes10050355.

DOI:10.3390/genes10050355
PMID:31075950
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6562411/
Abstract

Histone acts as the core for nucleosomes and is a key protein component of chromatin. Among different histone variants, histone H3 (HH3) variants have been reported to play vital roles in plant development. However, biological information and evolutionary relationships of genes in cotton remain to be elucidated. The current study identified 34 genes in . Phylogenetic analysis classified genes of 19 plant species into eight distinct clades. Sequence logos analysis among , rice, and amino acid residues showed higher conservation in amino acids. Using collinearity analysis, we identified 81 orthologous/paralogous gene pairs among the four genomes (A, D, At, and Dt) of cotton. Further, orthologous/paralogous and the Ka/Ks ratio demonstrated that cotton genes experienced strong purifying selection pressure with restricted functional divergence resulting from segmental and whole genome duplication. Expression pattern analysis indicated that genes were preferentially expressed in cotton ovule tissues. Additionally, gene expression can be regulated by abiotic stresses (cold, heat, sodium chloride (NaCl), and polyethylene glycol (PEG)) and phytohormonal (brassinolide (BL), gibberellic acid (GA), indole-3-acetic acid (IAA), salicylic acid (SA), and methyl jasmonate (MeJA)) treatments, suggesting that genes might play roles in abiotic and hormone stress resistance. Taken together, this work provides important information to decipher complete molecular and physiological functions of genes in cotton.

摘要

组蛋白作为核小体的核心，是染色质的关键蛋白组成部分。在不同的组蛋白变体中，组蛋白 H3（HH3）变体被报道在植物发育中发挥重要作用。然而，棉花基因的生物学信息和进化关系仍有待阐明。本研究在 中鉴定了 34 个基因。系统发育分析将 19 种植物物种的 基因分为 8 个不同的分支。 、水稻和 氨基酸残基之间的序列 logo 分析显示氨基酸具有更高的保守性。利用共线性分析，我们在棉花的四个基因组（A、D、At 和 Dt）中鉴定了 81 对同源/旁系基因对。此外，同源/旁系和 Ka/Ks 比值表明，棉花 基因经历了强烈的纯化选择压力，由于片段和全基因组复制，功能分化受到限制。表达模式分析表明， 基因在棉花胚珠组织中优先表达。此外， 基因表达可以受到非生物胁迫（冷、热、氯化钠（NaCl）和聚乙二醇（PEG））和植物激素（油菜素内酯（BL）、赤霉素（GA）、吲哚-3-乙酸（IAA）、水杨酸（SA）和茉莉酸甲酯（MeJA））处理的调节，表明 基因可能在非生物和激素胁迫抗性中发挥作用。总之，这项工作为破译棉花 基因的完整分子和生理功能提供了重要信息。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e2c/6562411/d846d9aab008/genes-10-00355-g006a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e2c/6562411/8f31ef54d482/genes-10-00355-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e2c/6562411/01ae4394d429/genes-10-00355-g002a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e2c/6562411/c5de9d9906f3/genes-10-00355-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e2c/6562411/450a999653e7/genes-10-00355-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e2c/6562411/d7c12de8cb16/genes-10-00355-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e2c/6562411/d846d9aab008/genes-10-00355-g006a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e2c/6562411/8f31ef54d482/genes-10-00355-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e2c/6562411/01ae4394d429/genes-10-00355-g002a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e2c/6562411/c5de9d9906f3/genes-10-00355-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e2c/6562411/450a999653e7/genes-10-00355-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e2c/6562411/d7c12de8cb16/genes-10-00355-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e2c/6562411/d846d9aab008/genes-10-00355-g006a.jpg

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