草地学报 ›› 2023, Vol. 31 ›› Issue (3): 676-687.DOI: 10.11733/j.issn.1007-0435.2023.03.007

• 研究论文 • 上一篇    下一篇

千穗谷TALE转录因子家族的生物信息学分析

周敏1,2, 周涛1,2, 徐倩1,2, 卢蕊1,2, 刘明稀1,2, 胡龙兴1,2   

  1. 1. 湖南农业大学农学院草业科学系, 湖南 长沙 410128;
    2. 湖南省草地研究中心, 湖南 长沙 410128
  • 收稿日期:2022-08-22 修回日期:2022-10-08 出版日期:2023-03-15 发布日期:2023-04-01
  • 通讯作者: 胡龙兴,E-mail:grass@hunau.edu.cn;刘明稀,E-mail:Lmx75@hunau.edu.cn
  • 作者简介:周敏(1998-),女,汉族,湖南浏阳人,硕士研究生,主要从事牧草遗传转化与种质创新研究,E-mail:1622748675@qq.com
  • 基金资助:
    山东省重点研发计划(农业良种工程)(2022LZGC018),中国科学院战略性先导科技专项(A类)(No.XDA26050201)和湖南省教厅项目(21A0126)资助

Bioinformatics Analysis of the TALE Transcription Factor Family in Amaranthus hypochondriacus

ZHOU Min1,2, ZHOU Tao1,2, XU Qian1,2, LU Rui1,2, LIU Ming-xi1,2, HU Long-xing1,2   

  1. 1. Department of Pratacultural Science, College of Agronomy, Hunan Agricultural University, Changsha, Hunan Province 410128, China;
    2. Hunan Grassland Research Center, Changsha, Hunan Province 410128, China
  • Received:2022-08-22 Revised:2022-10-08 Online:2023-03-15 Published:2023-04-01

摘要: TALE转录因子广泛存在于植物中,对植物的生长发育和对外界环境的响应发挥着重要作用。本研究在千穗谷(Amaranthus hypochondriacus)基因组中共鉴定出11个TALE基因。系统发育分析将千穗谷TALE家族蛋白分为BELL和KNOX两个亚家族,同一亚家族中的AhTALEs基因具有相似的基因结构,编码蛋白也具有类似的结构域。蛋白二级结构和三级结构分析都表明AhTALEs蛋白由螺旋-角-螺旋的结构构成。此外,对千穗谷与其他物种的TALE基因共线性关系、组织表达特性和AhTALEs基因启动子区的顺式作用元件分析发现,不同AhTALEs亚家族在各组织中的表达模式不同,并且发现启动子区包含大量非生物胁迫和激素响应元件,这为AhTALE家族的进化分析提供了依据。qRT-PCR分析发现AhTALEs基因在低温和干旱胁迫下的表达水平有不同程度的变化,表明AhTALEs基因能够响应低温和干旱胁迫应答。本研究为开展千穗谷中TALE转录因子在非生物胁迫中的生物学功能研究提供了重要参考。

关键词: 千穗谷, TALE, 基因家族, 低温, 干旱

Abstract: TALE transcription factors widely present in plants and play an important role in plant growth and organ development and response to the environment. In this study, 11 TALE genes were identified in the genome of Amaranthus hypochondriacus. By the phylogenetic analysis, the AhTALEs family was divided into BELL and KNOX subfamilies. The AhTALEs genes have a similar genetic structure in the same subfamily, and the encoding protein also has similar domains. The secondary structure and tertiary structure analysis of the AhTALEs family protein showed that it was composed of helical-angular-helical structure. In addition, the syntenic relations of the four species were analyzed, which provided the basis for the evolution of the AhTALE family. Analysis of tissue expression characteristics showed that the expression patterns of different AhTALE subfamilies were different in different tissues. Analysis of cis-acting elements in the promoter region of AhTALEs gene revealed a large number of elements in response to abiotic stresses and hormones existed. Subsequently, the qRT-PCR analysis showed that the expression level of AhTALEs gene changed in different degrees under low temperature and drought stress, indicating that AhTALEs gene could take a response to low temperature and drought stress. This study provided an important reference for the biological function of TALE transcription factor in A. hypochondriacus in response to abiotic stresses.

Key words: Amaranthus hypochondriacus, TALE, Gene family, Low temperature, Drought

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