灵宝杜鹃SBP基因家族的鉴定及非生物胁迫下的表达分析
CSTR:
作者:
作者单位:

1.洛阳师范学院生命科学学院 洛阳;2.洛阳师范学院生命科学学院

作者简介:

通讯作者:

中图分类号:

Q786;Q786

基金项目:

国家自然科学基金:基于RAD-seq的特有植物灵宝杜鹃繁殖生物学及保护遗传学研究(31870697)


Identification and Expression Analysis of SBP Gene Family in Rhododendron henanense subsp. lingbaoense under Abiotic Stress
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    【目的】 SQUAMOSA启动子结合蛋白(SBP)家族在植物发育和非生物胁迫等方面起重要作用,本研究可为灵宝杜鹃SBP基因家族成员的生物学功能和在非生物胁迫响应的调控功能提供参考,并为灵宝杜鹃物种保护奠定基础。【方法】采用生物信息学方法对灵宝杜鹃(Rhododendron henanense subsp. lingbaoense)SBP基因家族成员进行全基因组鉴定和分析,基于转录组数据分析组织特异性,并利用qRT-PCR方法检测SBP在非生物胁迫下的表达。【结果】结果表明:(1)从灵宝杜鹃基因组中共鉴定出19个含SBP保守结构域SBP成员,依次命名为RhlSBP1- RhlSBP19,基因不均匀分布在8条染色体上,编码的氨基酸长度为179~1 072 aa,分子量为20.26~118.73 kD;蛋白定位于细胞核。(2)系统发育分析将19个RhlSBP分为5个亚族,大部分RhlSBP与拟南芥SPL家族成员聚类。(3)MEME分析表明,所有的RhlSBP共有motif 1、motif 2和motif 4,基因结构显示Ⅳ、Ⅴ亚族内含子数量远多于I、Ⅱ、Ⅲ亚族。(4)顺式作用元件分析表明,RhlSBP启动子中含有大量光响应元件、激素响应元件和环境胁迫响应元件,推测RhlSBP可能在灵宝杜鹃响应光调控、环境胁迫发挥重要作用。(5)物种间的共线性分析显示灵宝杜鹃和羊踟蹰、圆叶杜鹃SBP基因共线性关系与水稻、拟南芥相比更强。(6)转录组数据分析显示,RhlSBP基因亚家族成员具有相似的组织表达模式。(7)qRT-PCR分析表明,RhlSBP基因对非生物胁迫具有响应作用,但不同成员在不同胁迫下的响应程度存在差异。茉莉酸甲酯和低温处理后,基因表达总体呈上调趋势,高盐会抑制RhlSBP基因表达,干旱条件下,RhlSBP基因表达处于先上调再下调趋势,RhlSBP1、RhlSBP8可能是干旱、低温和MeJA诱导关键基因。

    Abstract:

    【Objective】 SQUAMOSA promoter binding protein (SBP) plays an important role in plant development and abiotic stress. The aims of the study were to provide reference for the biological function and regulation of abiotic stress response of SBP gene family members of Lingbao rhododendron, and lay the foundation for the protection of the species. 【Methods】 In this study, the SBP gene family members in the whole genome of Rhododendron henanense subsp. lingbaoense was identified and analyzed by bioinformatics method. Tissue specificity was analyzed based on transcriptome data and qRT-PCR was used to detect the response of SBP gene expression in abiotic stress. 【Results】 The results showed that, (1) A total of 19 SBP genes containing SBP conserved domains was identified in the reference genome of Lingbao rhododendron, the length of amino acids encoded by the genes ranged from 179-1 072 aa with molecular weight ranging from 20.26-118.73 kD, the proteins were located in the nucleus, and the genes were unevenly distributed on 8 chromosomes. (2) 19 RhlSBPs were divided into 5 subfamilies by phylogenetic analysis and most RhlSBPs were clustered with Arabidopsis SPL family members. (3) MEME analysis showed that all RhlSBP shared motif 1, motif 2 and motif 4, and the number of introns in subfamilys Ⅳ and Ⅴ was much higher than that in subfamilys I, Ⅱ, Ⅲ. (4) The analysis of cis-acting elements showed that RhlSBP promoter contains a large number of light responsive elements, hormone responsive elements and stress responsive elements, suggesting that RhlSBP may play an important role in the response of Lingbao rhododendron to light regulation and abiotic stress. (5) Collinearity analysis indicated that the orthology of SBP genes in Rhododendron williamsianum and Rhododendron molle was higher than that of Oryza sativa and Arabidopsis thaliana. (6) Transcriptome data analysis showed that RhlSBP gene subfamily members had similar tissue expression patterns. (7) qRT-PCR analysis showed that RhlSBP gene had a response to abiotic stress, but different members of RhlSBP gene had different response degrees under different stresses. After methyl jasmonate(MeJA)and low temperature treatment, the gene expression was generally up-regulated, and high salt treatment inhibited RhlSBP gene expression. Under drought conditions, RhlSBP gene expression was up-regulated and then down-regulated. RhlSBP1 and RhlSBP8 may be the key genes induced by drought, low temperature and MeJA.

    参考文献
    相似文献
    引证文献
引用本文

于相丽,陈燕,赵若航,等.灵宝杜鹃SBP基因家族的鉴定及非生物胁迫下的表达分析[J].西北植物学报,2024,44(4):582-592

复制
分享
相关视频

文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2023-08-11
  • 最后修改日期:2023-10-11
  • 录用日期:2023-10-15
  • 在线发布日期: 2024-03-07
  • 出版日期:
文章二维码