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[1]郑世仲 江胜滔 陈美霞 林玉铃 赖钟雄** 林金科**.茶树Ankyrin基因启动子的克隆及其5’UTR内含子功能*[J].应用与环境生物学报,2020,26(01):1-11.[doi:10.19675/j.cnki.1006-687x.2019.05011]
 ZHENG Shizhong,JIANG Shengtao,et al.Isolation of the Ankyrin gene promoter and function of its 5UTR intron from tea plant ( Camellia sinensis L.) *[J].Chinese Journal of Applied & Environmental Biology,2020,26(01):1-11.[doi:10.19675/j.cnki.1006-687x.2019.05011]
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茶树Ankyrin基因启动子的克隆及其5’UTR内含子功能*()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
26卷
期数:
2020年01期
页码:
1-11
栏目:
研究论文
出版日期:
2020-01-25

文章信息/Info

Title:
Isolation of the Ankyrin gene promoter and function of its 5UTR intron from tea plant ( Camellia sinensis L.) *
作者:
郑世仲1;?2 江胜滔1;?2 陈美霞1;?2 林玉铃3 赖钟雄3** 林金科4**
1宁德师范学院生命科学学院 宁德 352100
2 闽东特色生物资源福建省高校工程研究中心 宁德 352100
3福建农林大学园艺植物生物工程研究所 福州 350002 4福建农林大学安溪茶学院 福州 350002
Author(s):
ZHENG Shizhong1;? 2;? JIANG Shengtao1;? 2;? CHEN Meixia1;? 2;? LIN Yuling3;? LAI Zhongxiong3** & LIN Jinke 4**
1 College of Life Sciences, Ningde Normal University , Ningde 352100, China
2 Institute of Fujian Higher Education for Local Bio-resources in Ningde City , Ningde 352100, China
3 Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University , Fuzhou 350002, China 4 Anxi College of Tea Science, Fujian Agriculture and Forestry University , Fuzhou 350002, China
关键词:
茶树;?CsAnkyrin;?启动子;?顺式作用元件;?5’UTR内含子
Keywords:
tea plant ;? CsAnkyrin;? promoter;? cis-regulatory element;? 5UTR intron
DOI:
10.19675/j.cnki.1006-687x.2019.05011
摘要:
为了解启动子在茶树Ankyrin 基因(CsAnkyrin)表达调控中的作用,以茶树新品系“1005”嫩芽为材料,通过染色体步移技术克隆CsAnkyrin 基因启动子序列,利用Neural Network Promoter Prediction 和PlantCARE在线软件等对启动子序列进行生物信息学分析,将含有内含子和删除内含子的启动子序列(+intron/-intron)分别定向替换pCAMBIA1301表达载体的CaMV35S启动子,构建重组表达载体后分别转化拟南芥,并进行GUS组织化学染色分析。结果显示,克隆得到的CsAnkyrin启动子序列(命名为proAnk)为1 010 bp,含有一个5’UTR(5’untranslated regions,5’非编码区)内含子。启动子序列除含有启动子核心元件TATA-box和CAAT-box,还存在有激素响应元件、光响应元件、厌氧胁迫应答元件以及大量功能未知或功能特异的顺式作用元件。删除5’UTR内含子后的启动子序列能够驱动下游GUS报告基因表达,保留5’UTR内含子的启动子序列不能驱动下游GUS报告基因正常表达,但是RT-PCR实验结果表明5’UTR内含子在转录后没有被切除,而是和GUS基因一起转录产生融合mRNA。上述结果说明,proAnk具有诱导型启动子特性,5’UTR内含子对下游基因正常表达具有负调控作用,且可能是在翻译水平上对下游基因表达产生影响。(图7 表1 参32)
Abstract:
This study aimed to investigate the regulation in the expression process of CsAnkyrin in tea plant. A 1 010 bp 5’-flanking sequence of CsAnkyrin was isolated from the shoots of tea cultivar ‘1005’ through genome-walking method, designated as proAnk. Sequence analysis was carried out by online bioinformatics resources, such as Neural Network Promotor Prediction and PlantCARE to reveal its basic core promoter, transcription start site and cis-regulatory elements. The results showed, some typical cis-acting elements such as TATA-box, CAAT-box elements, some cis-acting elements responding to hormone, light, stresses, and some other cis-elements with unknown or specific function were contained within proAnk, suggesting that proAnk is an inducible promoter. A 5’UTR intron was also contained in the proAnk sequence. The CsAnkyrin promoter sequences with intron or without intron sequence (+intron/-intron) w ere cloned into the expression vector pCAMBIA1301 to replace CaMV35S promoter and produce a new recombinant expression vector, respectively. The recombinant plasmid was then transformed into Arabidopsis thaliana through floral dip method. The GUS histochemical analysis of transgenic Arabidopsis thaliana revealed that the proAnk including 5’UTR intron can not drive the expression of GUS gene, but the sequences excluding 5’UTR intron can do it. The Semi-Quantitative RT-PCR showed that the 5’UTR intron was not removed during the transcriptional process, but transcripted to mRNA, suggesting that the 5’UTR intron of CsAnkyrin gene negatively regulate the down-stream?gene expression, and may work in the the?process?of translation.

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备注/Memo

备注/Memo:
收稿日期 Received: 2019-05-08 接受日期 Accepted: 2019-05-21
*福建省高校杰出青年科研人才培育计划项目资助
**通讯作者 Corresponding author (E-mail: Laizx01@163.com; ljk213@163.com)
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更新日期/Last Update: 2019-07-26