生物技术通报 ›› 2022, Vol. 38 ›› Issue (9): 167-179.doi: 10.13560/j.cnki.biotech.bull.1985.2021-1459

• 研究报告 • 上一篇    下一篇

核桃CONSTANS-Like基因家族全基因组鉴定及表达分析

袁星(), 郭彩华, 刘金明, 亢超, 全绍文, 牛建新()   

  1. 石河子大学农学院园艺系 特色果蔬栽培生理与种质资源利用兵团重点实验室,石河子 832003
  • 收稿日期:2021-11-12 出版日期:2022-09-26 发布日期:2022-10-11
  • 作者简介:袁星,女,硕士研究生,研究方向:园艺学;E-mail: 354506832@qq.com
  • 基金资助:
    国家自然科学基金项目(32060668)

Genome-wide Identification of CONSTANS-Like Family Genes and Expression Analysis in Wanlut

YUAN Xing(), GUO Cai-hua, LIU Jin-ming, KANG Chao, QUAN Shao-wen, NIU Jian-xin()   

  1. Department of Horticulture,College of Agriculture,Shihezi University/Xinjiang Production and Construction Corps Key Laboratory of Special Fruits and Vegetables Cultivation Physiology and Germplasm Resources Utilization,Shihezi 832003
  • Received:2021-11-12 Published:2022-09-26 Online:2022-10-11

摘要:

基于核桃基因组鉴定核桃COL(CONSTANS-Like)家族成员,并对其进行分析,以揭示核桃COL家族的分子进化和潜在功能。以‘新新2号'(Juglans regia cv. Xinxin No. 2)为材料,对COL基因家族全基因组进行鉴定及生物信息分析,并分析其在不同组织及不同时间雌花芽的表达。结果表明,核桃基因组中共存在55个COL基因,不均匀地分布在16个染色体和1个Scaffold上,依次命名为JrCOL1-JrCOL55,氨基酸为117-789 aa,分子量为12.99-86.08 kD,等电点为4.00-8.94,进化树分析将其分为3个亚族,且同一分支基因的保守基序和基因结构位置相似。启动子区的顺式作用元件分析发现JrCOL基因含有大量与光信号、植物激素、胁迫等相关的顺式作用元件。‘新新2号'中JrCOL家族基因具有组织特异性表达,其中JrCO1JrCO7a-cJrCO8JrCOL23JrCO31a-cJrCO33JrCOL35JrCOL50a-f在叶片中表达量最高。对‘新新2号'雌花芽不同时间JrCOL基因的RT-qPCR分析表明,JrCOL1JrCOL35JrCOL50a-fJrCOL52在‘新新2号'雌花芽中,具有一致的表达趋势,其中JrCOL50a-f在‘新新2号'雌花芽分化过程中起到重要作用。在核桃基因组中鉴定出55个COL家族基因,分为3个亚家族,不均匀地分布在16个染色体和1个Scaffold上,结构进化保守,组织表达模式多样。推测JrCOL家族基因在核桃叶片发育过程中发挥重要功能。

关键词: ‘新新2号', CONSTANS-Like, 核桃基因家族, 全基因组鉴定, 基因表达

Abstract:

The genome-wide analysis of the COL family in walnut(Juglans regia)was used to identify the COL(CONSTANS-Like)family members in walnut,and then to reveal molecular evolution and function of the COL family in walnut. Having ‘Xinxin 2'(Juglans regia cv. Xinxin No. 2)as research materials,the genome-wide identification and comprehensive analysis of the COL gene family in walnut were conducted,and their expressions in the female flower bud in different tissues and stages were analyzed. Totally,55 members of COL genes were identified from the whole genome of walnut,and they were unevenly distributed over 16 chromosomes and 1 Scaffold,designated as JrCOL1-JrCOL55,amino acids were 117-789,the molecular weight was between 12.99 to 86.08 kD,and the theoretical isoelectric point ranged from 4.00 to 8.94. The JrCOL proteins were classified into 3 subgroups by evolutionary tree analysis,and the conserved motifs and gene structure of each subgroup were similar. Cis-acting element analysis in the promoter region showed that JrCOLs contained a large number of functional domains related to light signal,plant hormone and stress. Spatial expression pattern analysis showed that JrCOL gene expression was tissue specific and the expression of JrCO1,JrCO7a-c,JrCO8,JrCOL23,JrCO31a-c,JrCO33,JrCOL35 and JrCOL50a-f was the highest in the leaves. And the RT-PCR analysis revealed that JrCOL1,JrCOL35,JrCOL50a-f and JrCOL52 showed consistent expression trend in female flower buds of ‘Xinxin 2',and JrCOL50a-f played an important role in the differential process of female flower buds of ‘Xinxin 2'. And 55 JrCOL members in 3 subgroups were identified in the walnut,and were unevenly distributed in 16 chromosomes and 1 Scaffold,with conserved motifs distributions and diverse expression patterns. It is suggested that JrCOL family gene plays key role in the development of walnut leaves.

Key words: Juglans regia cv. Xinxin No. 2, CONSTANS-Like, gene family in walnut, genome-wide identification, gene expression