甜瓜海藻糖6磷酸合成酶基因鉴定及表达
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

国家现代农业产业技术体系建设专项(CARS2618)


Expression Analysis and GenomeWide Identification of Trehalose6Phosphate Synthase Gene Family in Melon (Cucumis melo L.)
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:

    为了明确甜瓜海藻糖6磷酸合成酶基因(CmTPS)家族信息及对逆境信号的响应,该研究采用生物信息学方法,通过拟南芥TPS家族基因与甜瓜基因组数据库比对,从甜瓜基因组中共鉴定出7个海藻糖6磷酸合成酶基因,按照其在染色体上的位置分别命名为CmTPS1~7。系统进化分析结果显示,CmTPS4和CmTPS7为第1类,二者均含有16个内含子,推测其编码产物均具有海藻糖6磷酸合成酶(TPS)活性;其余5个CmTPS基因归为第2类,分别含有2~4个内含子;在这7个甜瓜TPS中,除CmTPS3只有TPS结构域外,其余CmTPS都含有TPS、TPP及UDPforming结构域;蛋白序列比对结果显示,甜瓜TPS家族各成员间相似性较低(15.90%~57.31%);亚细胞定位预测表明,CmTPS1、CmTPS2和CmTPS6定位在细胞核内,其余4个CmTPS定位在细胞质内。qRTPCR表达分析表明,低温胁迫下甜瓜叶片可能以CmTPS4为主要的TPS编码基因;CmTPS基因家族对盐胁迫较为敏感,同时在ABA信号传递中起调控作用。这为进一步研究甜瓜TPS基因家族奠定了基础。

    Abstract:

    In order to clarify the information of CmTPS gene family and the patterns of response to environment cues, we identified seven TPSs in melon genome in this work. These TPSs distributed on seven chromosomes and designated CmTPS1-7. Phylogenetic analysis indicated that CmTPS genes would be classified into classⅠand classⅡ. CmTPS4 and CmTPS7 belong to classⅠwith 16 introns and their proteins probably possess TPS activity. The other five CmTPS genes, containing two to four introns, were classified into class Ⅱ. CmTPS3 consists of only TPS domain, whereas the remaining TPSs comprise TPS, TPP and UDPforming domains. CmTPS proteins have low similarity (15.90%-57.31%) within family members. Subcellular localization prediction indicated that CmTPS1, CmTPS2 and CmTPS6 were localized to the nucleus and the others in cytoplasm. The expression of CmTPS genes under various abiotic stresses showed that CmTPS4 might be main gene encoding TPS in melon leaves under low temperature stress, while melon TPS family genes were more sensitive to salt stress and might be involved in regulation of ABA signal pathway. Our results lay the foundation for functional characterization of melon TPS family genes in the future.

    参考文献
    相似文献
    引证文献
引用本文

杨永超,张海斐,杨小振,等.甜瓜海藻糖6磷酸合成酶基因鉴定及表达[J].西北植物学报,2017,37(6):1066-1072

复制
分享
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:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2017-07-17
  • 出版日期:

微信公众号二维码

手机版网站二维码