|本期目录/Table of Contents|

[1]赵红,邓雨晴,曾淑琴,等.江西铅山红芽芋TIFY 9基因克隆与功能分析[J].江苏农业科学,2022,50(5):41-49.
 Zhao Hong,et al.Cloning and functional analysis of TIFY 9 gene in Colocasia esculenta L. Schott var. cormosus ‘Hongyayu’ in Jiangxi Province[J].Jiangsu Agricultural Sciences,2022,50(5):41-49.
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第50卷
期数:
2022年第5期
页码:
41-49
栏目:
生物技术
出版日期:
2022-03-05

文章信息/Info

Title:
Cloning and functional analysis of TIFY 9 gene in Colocasia esculenta L. Schott var. cormosus ‘Hongyayu’ in Jiangxi Province
作者:
赵红1234 邓雨晴1 曾淑琴1 曾荧1 张彩霞1 张慧博1 张丽佳1 张玲1 张妮1 尹明华1234
1.上饶师范学院生命科学学院,江西上饶 334001; 2.上饶市药食同源植物资源保护与利用重点实验室,江西上饶 334001;3.上饶市薯芋类作物种质保存与利用重点实验室,江西上饶 334001; 4.上饶农业技术创新研究院,江西上饶 334001
Author(s):
Zhao Honget al
关键词:
江西铅山红芽芋TIFY 9基因基因克隆功能分析转基因表达
Keywords:
-
分类号:
S632.301
DOI:
-
文献标志码:
A
摘要:
为了深入探究江西铅山红芽芋TIFY 9基因的功能,通过江西铅山红芽芋试管苗转录组数据库筛选到江西铅山红芽芋TIFY 9基因的核心片段,利用RT-PCR 技术克隆该基因,并采用生物信息学方法、转基因瞬时表达和实时定量 PCR进行序列分析、亚细胞定位、器官表达分析和功能分析。结果表明:江西铅山红芽芋TIFY 9基因cDNA总长度为522 bp,G+C 含量为58.62%;由174个氨基酸组成,分子量19 073.87 u,等电点9.30,为亲水性蛋白;二级结构由α-螺旋(31.61%)、β-片层(12.64%)、无规则卷曲(55.75%) 构成,三级结构为单体;主要存在细胞核中;在进化上与Colocasia esculenta(芋)的亲缘关系较近,与Colocasia esculenta(芋)hypothetical protein Taro_030839(MQL98131.1)在进化上具有最高的亲缘关系。江西铅山红芽芋TIFY 9蛋白具有典型植物TIFY 9的结构特征,氨基酸序列及核酸序列与同源物种同源性高达100%,在进化上高度保守。烟草叶片亚细胞定位分析表明,TIFY 9定位于细胞质和细胞核中。实时定量PCR结果显示,TIFY 9基因在江西铅山红芽芋中的表达存在器官特异性,在江西铅山红芽芋不同组织部位均有表达,且在叶中和球茎膨大初期表达量最高。在烟草花叶病毒胁迫下,与TIFY 9非转基因烟草相比较,TIFY 9转基因烟草的净光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)、最大光化学效率(Fv/Fm)、实际光化学量子效率(ΦPS Ⅱ)、光化学淬灭系数(qP)及电子传递效率(ETR)显著增加,而非光化学淬灭系数(NPQ)显著下降,表明TIFY 9基因响应病毒胁迫应答可能是依赖光合作用的提高。
Abstract:
-

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备注/Memo

备注/Memo:
收稿日期:2021-04-27
基金项目:国家自然科学基金(编号:32060092、31960079);2021年度江西省教育厅科学技术研究项目(编号:GJJ211729);上饶市科技局平台载体建设项目(编号:2020I001、2019I017)。
作者简介:赵红(1966—),女,江西上饶人,硕士,高级实验师,主要从事植物生物技术研究工作。E-mail:928807480@qq.com。
通信作者:尹明华,硕士,教授,主要从事植物生物技术研究工作。E-mail:yinmin
更新日期/Last Update: 2022-03-05