生物技术通报 ›› 2019, Vol. 35 ›› Issue (6): 16-23.doi: 10.13560/j.cnki.biotech.bull.1985.2018-0891

• 研究报告 • 上一篇    下一篇

桃PpNAC72的克隆及表达分析

武肖琦, 冯涛, 刘艳军, 焦思鹏, 孙攀, 杨静慧   

  1. 天津农学院园艺学院,天津 300384
  • 收稿日期:2018-10-17 出版日期:2019-06-26 发布日期:2019-07-08
  • 作者简介:武肖琦,女,硕士,研究方向:果树分子生物学;E-mail:1225053239@qq.com
  • 基金资助:
    天津农学院研究生创新培育项目(J0100906),天津市科委项目(16YFZCNC00750),中央财政项目(天津市重大农业技术推广项目)(2017CK0184),天津市农委项目(ITTHRS2018002),天津市科委特派员项目(17ZXBFNC00310),天津市高等学校科技发展基金计划(20130617),天津市林果现代产业技术体系(ITTFPRS2018004)

Cloning and Expression Analysis of the PpNAC72 in Peach

WU Xiao-qi, FENG Tao, LIU Yan-jun, JIAO Si-peng, SUN Pan, YANG Jing-hui   

  1. College of Horticulture,Tianjin Agricultural University,Tianjin 300384
  • Received:2018-10-17 Published:2019-06-26 Online:2019-07-08

摘要: 旨在从桃树‘津柳早红’中克隆PpNAC72,并分析其在不同发育时期的表达情况,初步探究该基因在桃生长中的功能。采用RT-PCR技术从桃果实中克隆得到PpNAC72序列,并对其进行定量表达分析以及生物信息学分析。结果显示,桃PpNAC72(GenBank:MH627940)开放阅读框序列为1 050 bp,编码349个氨基酸,其等电点为8.34,有1个NAM结构域,具有典型的NAC家族结构特征。氨基酸同源性分析表明,PpNAC72与已报道的其他植物NAC蛋白具有较高的相似性,其中,与甜樱桃的NAC蛋白同源性最高。荧光定量PCR结果表明,PpNAC72在桃树各器官中均有不同程度的表达,果实中表达量最高;在不同时期的表达量也有明显变化,在桃果实生长中后期表达量最高。PpNAC72作为转录因子可能参与桃的成熟。

关键词: 桃, PpNAC72, 成熟, 表达分析

Abstract: The aims are to clone the PpNAC72 from the peach sepecies “Jinliuzaohong”,to analyze the expression profile in different development stages,and to explore its role in the peach growth. RT-PCR was used to clone the PpNAC72,and subsequently to quantitatively analyze its expression profile and bioinformatics. The results showed that the PpNAC72(GenBank accession number:MH627940)had an open reading frame sequence of 1 050 bp,encoding 349 amino acids,an isoelectric point of 8.34,and a NAM domain with typical NAC family structure. Amino acid homology analysis demonstrated that PpNAC72 had high similarity to the reported NAC of other plants,and the NAC protein had the highest homology with sweet cherry. The results of qRT-PCR revealed that PpNAC72 was expressed in different degrees in peach organs,and the expression level was the highest in fruits. The expression level was also significantly varied in different periods,and the expression level was the highest in the middle and late growth stages of peach fruit. The PpNAC72 might be involved in the maturation of peach as a transcription factor.

Key words: peach, PpNAC72, mature, expression analysis