番茄NAC转录因子<em>SlNAC</em>80的克隆及表达分析

doi:10.7668/hbnxb.2015.01.013

华北农学报 ›› 2015, Vol. 30 ›› Issue (1): 77-83. doi: 10.7668/hbnxb.2015.01.013

所属专题： 番茄；

番茄NAC转录因子SlNAC80的克隆及表达分析

刘辉¹, 王涛涛², 张俊红², 欧阳波², 李汉霞²

1. 中国热带农业科学院橡胶研究所, 农业部橡胶树生物学与遗传资源利用重点实验室, 海南儋州 571737;
2. 华中农业大学园艺林学学院, 园艺植物生物学教育部重点实验室, 湖北武汉 430070

收稿日期:2014-09-28 出版日期:2015-02-28
通讯作者: 李汉霞(1958-),女,湖北洪湖人,教授,主要从事蔬菜遗传育种及分子生物学研究。
作者简介:刘辉(1986-),男,安徽亳州人,助理研究员,博士,主要从事植物逆境分子生物学研究。
基金资助:
国家自然科学基金项目(31301789);国家高技术研究发展计划("863"计划)项目(2012AA100104)

Cloning and Expression Analysis of a NAC Transcription Factor SlNAC 80 in Tomato

LIU Hui¹, WANG Tao-tao², ZHANG Jun-hong², OUYANG Bo², LI Han-xia²

1. Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Biology and Genetic Resources of Rubber Tree, Ministry of Agriculture, Danzhou 571737, China;
2. College of Horticulture and Forestry, Huazhong Agricultural University, Key Laboratory of Horticultural Plant Biology, Ministry of Education, Wuhan 430070, China

Received:2014-09-28 Published:2015-02-28

摘要/Abstract

摘要： 为进一步明确该基因的分子特征及表达特性,通过RT-PCR从番茄中克隆了低温响应NAC转录因子 SlNAC80,该基因开放阅读框1 023 bp,编码340个氨基酸。SlNAC80蛋白相对分子量为38.19 kDa,等电点为5.27,N-端具有典型的NAC保守结构域,包含A、B、C、D、E 5个亚结构域。实时荧光定量PCR (qPCR)分析表明, SlNAC80 在番茄各组织中均有表达,以在绿果和衰老叶中的表达量最高,在红熟果中的表达量最低。对启动子区序列进行预测分析发现, SlNAC80 启动子区含有许多响应激素(ABA、GA、SA及ETH)和逆境(低温、脱水及盐胁迫)的顺式作用元件,如ERELEE4、GARE1OSREP1、LTRE1HVBLT49、GT1GMSCAM4、MYB1AT、MYCATERD1、MYCATRD22、WBOXNTERF3及WRKY71OS等。qPCR分析结果也证实该基因的表达受低温、干旱、高盐、甲基紫精、ABA及乙烯处理诱导。这些结果表明, SlNAC80 可能在番茄非生物逆境应答中发挥重要调控作用。

关键词: 番茄, NAC转录因子, 基因克隆, 表达分析, 非生物胁迫

Abstract: To further understand the molecular characterization and expression patterns of SlNAC80, we cloned this gene from tomato SlNAC 80 contains an open reading frame of 1 023 bp encoding a protein of 340 amino acids.The molecular weight and isoelectric point of SlNAC80 protein was 38.19 kDa and 5.27, respectively.SlNAC80 contains a typical NAC domain in the N-terminal, which consists of five subdomains (A to E).Quantitative Real-time PCR (qPCR) analysis showed that SlNAC80 was expressed in all tested tomato tissues, with the highest in green fruits and old leaves, and the lowest in red ripe fruits.Promoter sequence analysis indicated that there were many cis-acting regulatory elements involved in response to hormones (ABA, GA, SA and ETH) and abiotic stresses (cold, dehydration and salt stresses), such as ERELEE4, GARE1OSREP1, LTRE1HVBLT49, GT1GMSCAM4, MYB1AT, MYCATERD1, MYCATRD22, WBOXNTERF3, WRKY71OS, and etc.The qPCR analysis also demonstrated that the expression of SlNAC80 was induced by cold, drought, salt, methyl viologen, ABA and ethephon treatments.These results suggest that SlNAC80 may play important roles in regulating abiotic stress responses in tomato.

Key words: Tomato, NAC transcription factor, Gene cloning, Expression analysis, Abiotic stress

中图分类号:

Q78
S641.2

刘辉, 王涛涛, 张俊红, 欧阳波, 李汉霞. 番茄NAC转录因子SlNAC80的克隆及表达分析[J]. 华北农学报, 2015, 30(1): 77-83. doi: 10.7668/hbnxb.2015.01.013.

LIU Hui, WANG Tao-tao, ZHANG Jun-hong, OUYANG Bo, LI Han-xia. Cloning and Expression Analysis of a NAC Transcription Factor SlNAC 80 in Tomato[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2015, 30(1): 77-83. doi: 10.7668/hbnxb.2015.01.013.

http://www.hbnxb.net/CN/Y2015/V30/I1/77

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番茄NAC转录因子SlNAC80的克隆及表达分析

Cloning and Expression Analysis of a NAC Transcription Factor SlNAC 80 in Tomato

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番茄NAC转录因子SlNAC80的克隆及表达分析

Cloning and Expression Analysis of a NAC Transcription Factor SlNAC 80 in Tomato

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