https://www.ahs.ac.cn/images/0513-353X/images/top-banner1.jpg|#|苹果
https://www.ahs.ac.cn/images/0513-353X/images/top-banner2.jpg|#|甘蓝
https://www.ahs.ac.cn/images/0513-353X/images/top-banner3.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner4.jpg|#|灵芝
https://www.ahs.ac.cn/images/0513-353X/images/top-banner5.jpg|#|桃
https://www.ahs.ac.cn/images/0513-353X/images/top-banner6.jpg|#|黄瓜
https://www.ahs.ac.cn/images/0513-353X/images/top-banner7.jpg|#|蝴蝶兰
https://www.ahs.ac.cn/images/0513-353X/images/top-banner8.jpg|#|樱桃
https://www.ahs.ac.cn/images/0513-353X/images/top-banner9.jpg|#|观赏荷花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner10.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner11.jpg|#|月季
https://www.ahs.ac.cn/images/0513-353X/images/top-banner12.jpg|#|菊花

园艺学报 ›› 2025, Vol. 52 ›› Issue (7): 1769-1779.doi: 10.16420/j.issn.0513-353x.2024-0744

• 遗传育种·种质资源·分子生物学 • 上一篇    下一篇

金针菇过氧化氢酶基因FfCAT1FfCAT2的表达分析

张拓2,*, 聂梦涵2,*, 刘媛媛2,3, 段昕莲1, 韩星1, 谢宝贵2,**(), 严俊杰1,**()   

  1. 1 中国农业科学院都市农业研究所,国家成都农业科技中心,成都 610213
    2 福建农林大学生命科学学院菌物研究中心,福州 350002
    3 北京市农林科学院植物保护研究所,北京 100080
  • 收稿日期:2025-04-11 修回日期:2025-06-10 出版日期:2025-07-23 发布日期:2025-07-23
  • 通讯作者:
  • 作者简介:
    *共同一作
  • 基金资助:
    国家自然科学基金青年科学基金项目(32102458); 四川省科技计划项目(2024ZYD0195); 中国农业科学院科技创新工程项目(34-IUA-06); 四川省育种联合攻关项目(2023YZ001)

Expression Analysis of the Catalase Genes FfCAT1 and FfCAT2 in Flammulina filiformis

ZHANG Tuo2, NIE Menghan2, LIU Yuanyuan2,3, DUAN Xinlian1, HAN Xing1, XIE Baogui2,**(), and YAN Junjie1,**()   

  1. 1 Chengdu Agricultural Science and Technology Center,Institute of Urban Agriculture,Chinese Academy of Agricultural Sciences,Chengdu 610213,China
    2 Mycological Research Center,College of Life Sciences,Fujian Agriculture and Forestry University,Fuzhou 350002,China
    3 Institute of Plant Protection,Beijing Academy of Agriculture and Forestry Sciences,Beijing 100080,China
  • Received:2025-04-11 Revised:2025-06-10 Published:2025-07-23 Online:2025-07-23

摘要:

为了探究过氧化氢酶基因(CAT)在金针菇(Flammulina filiformis)子实体生长发育过程中的作用,基于全基因组数据鉴定了两个过氧化氢酶基因,分别命名为FfCAT1FfCAT2FfCAT1基因开放阅读框长1 557 bp,编码518个氨基酸。FfCAT2基因开放阅读框长1 692 bp,编码563个氨基酸。两个基因编码的蛋白均位于细胞质内,无跨膜结构域,但FfCAT1不具备信号肽,而FfCAT2在第18 ~ 19位氨基酸残基间具有信号肽。保守结构域及系统进化树分析显示,FfCAT1和FfCAT2均属于单功能过氧化氢酶。qRT-PCR的结果显示,FfCAT1在成熟期菌盖中高表达,且在菌盖弹射孢子阶段表达量显著上调,菌褶中的表达量显著高于菌肉组织;FfCAT2在伸长期菌盖中高表达,但在菌盖不同发育阶段的表达量差异较小,仅在直径3.3 cm的菌盖中显著下调;在直径0.9 cm菌盖的菌褶和菌肉组织中无显著差异。研究结果表明,两个FfCAT基因在菌盖生长发育过程发挥不同作用,FfCAT1作为主效基因参与菌盖的发育调控,且与菌褶上孢子的弹射相关。

关键词: 金针菇, 过氧化氢酶, 子实体发育, 表达分析, 有性繁殖

Abstract:

In order to explore the role of catalase gene(CAT)in the development of fruit body in Flammulina filiformis,two catalase genes were identified based on the whole-genome of F. filiformis,named FfCAT1 and FfCAT2,respectively. The length open reading frame of the FfCAT1 gene was 1 557 bp and encoded 518 amino acids. The length open reading frame of the FfCAT2 gene was 1 692 bp and encoded 563 amino acids. The proteins encoded by both genes were located in the cytoplasm,contained no transmembrane domains. However,FfCAT1 did not have a signal peptide,while FfCAT2 had signal peptide between amino acid residues 18-19. Conserved domain and phylogenetic tree analysis showed that FfCAT1 and FfCAT2 belonged to monofunctional catalases. The qRT-PCR results suggested that FfCAT1 was highly expressed in the pileus of maturation stage and the expression level was significantly up-regulated in the ejection spore stage of pileus. The expression level in the lamella was significantly higher than that in the context. FfCAT2 was highly expressed in the pileus of elongation stage,but the expression of FfCAT2 gene was less different in different stages of development of the pileus,and it was significantly down-regulated when the pileus diameter was 3.3 cm. There were no significant differences in the lamella and context of 0.9 cm diameter pileus. These results indicated that two FfCAT genes played different roles in the growth and development of the pileus. FfCAT1 was the major gene involved in the regulation of the development of the pileus and was related to the ejection of spores on the lamella.

Key words: Flammulina filiformis, catalase, fruit body development, expression analysis, sexual reproduction