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[1]毕田田,张骐,代金玲,等.毛果杨PtIPT5基因的克隆及低温胁迫表达分析[J].江苏农业科学,2023,51(22):14-23.
 Bi Tiantian,et al.Cloning of PtIPT5 gene in Populus trichocarpa and its expression analysis under low temperature stress[J].Jiangsu Agricultural Sciences,2023,51(22):14-23.
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毛果杨PtIPT5基因的克隆及低温胁迫表达分析(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第51卷
期数:
2023年第22期
页码:
14-23
栏目:
生物技术
出版日期:
2023-12-04

文章信息/Info

Title:
Cloning of PtIPT5 gene in Populus trichocarpa and its expression analysis under low temperature stress
作者:
毕田田1张骐1代金玲1高秀芳2白玉娥1
1.内蒙古农业大学林学院,内蒙古呼和浩特 010000; 2.鄂尔多斯市林业和草原事业发展中心,内蒙古鄂尔多斯 017000
Author(s):
Bi Tiantianet al
关键词:
毛果杨PtIPT5基因克隆低温胁迫生物信息学表达分析
Keywords:
-
分类号:
S792.113.01
DOI:
-
文献标志码:
A
摘要:
为探究异戊稀基转移酶基因(IPT)的抗逆机理,通过PCR技术从毛果杨叶片中克隆了IPT基因,命名为PtIPT5,对该基因及其蛋白进行生物信息学分析,并使用实时荧光定量技术(qRT-PCR)分析其在毛果杨组培苗不同组织及不同程度低温处理下的表达特性。结果表明,PtIPT5基因编码区(coding sequence,CDS)长度为984 bp,可编码327个氨基酸残基;PtIPT5蛋白为稳定亲水蛋白,且无信号肽和跨膜结构,含有GxxGxGK[S,T]保守基序;系统进化树分析结果显示,毛果杨PtIPT5蛋白与美洲黑杨、红皮柳等杨柳科植物的IPT亲缘关系较近;同源蛋白结构域分析结果显示,IPT蛋白高度保守,只有Cas3_I superfamily结构域;亚细胞定位预测PtIPT5蛋白位于叶绿体中;启动子分析结果显示,PtIPT5基因的启动子序列包含多种胁迫响应的顺式作用元件;PtIPT5基因在毛果杨茎段、顶芽、腋芽、主根、侧根、幼嫩叶、扩展叶和黄化衰老叶中均有表达,其中在顶芽、根部和幼嫩叶中相对表达量较高;低温胁迫下,PtIPT5基因的相对表达量随温度降低和胁迫时间增加显著下降,据此推测该基因响应低温胁迫并发挥调控作用。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2023-01-02
基金项目:国家科技重大专项(编号:2018ZX08020002-005-005)。
作者简介:毕田田(1997—),女,辽宁朝阳人,硕士研究生,主要从事林木生物技术研究。E-mail:1756988574@qq.com。
通信作者:白玉娥,博士,教授,主要从事林木遗传育种研究。E-mail:baiyue@imay.edu.cn。
更新日期/Last Update: 2023-11-20