ThIPK1调节了白色腐烂真菌在木材降解过程中的纤维细胞分解酶表达
Xinlei Zhang1,2,3, Rong Zhu1,2,3, Diao Yin1,2,3
1School of Life Sciences, Anhui University, Hefei, Anhui, China.
mBio
|August 18, 2025
概括
白色腐烂真菌使用伊诺西聚酸盐信号和表观遗传修饰来感知木质素并调节植物生物质降解的酶表达. 这项研究确定ThIPK1是这个过程中的关键调节器.
科学领域:
- 菌类学 菌类学是指菌类学.
- 分子生物学分子生物学
- 环境微生物学 环境微生物学
背景情况:
- 白色腐烂真菌对于陆地碳循环至关重要,在植物细胞壁中分解纤维素.
- 红纤维素的降解是由真菌对特定信号的感知触发的,但感知机制仍然不清楚.
研究的目的:
- 阐明白菌感知菌信号的分子机制.
- 为了确定对素单体的反应中,素细胞分解酶表达的关键调节者.
主要方法:
- 产生一种退化的 *Trametes hirsuta * 菌株,缺乏纤维细胞分解能力.
- 转录组分析以确定差异表达的基因.
- 候选基因和表观遗传修饰的功能验证.
主要成果:
- *Th*IPK1,一种因诺醇聚酸盐通路中的基因,被确定为林氏细胞解酶表达的调节者.
- 5mC甲基化和Zn2Cys6转录因子介导信号转导和差异基因转录.
- IPK1在白色腐烂真菌中表现出一种超越家族遗传关系的保留作用.
结论:
- 一个新的调节轴涉及伊诺西聚酸盐信号和表观遗传调制,将素线索连接到酶表达.
- 这种机制使真菌能够整合宁单体信号,以适应基因表达.
- 这些发现有助于更好地了解真菌的适应性和生态系统中的红素循环.
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