GPI-Anchored Protein Homolog IcFBR1 Functions Directly in Morphological Development of Isaria cicadae

文献类型： 外文期刊

第一作者： Li, Dong

作者： Li, Dong;Cai, Weiming;Li, Dong;Wang, Hongkai;Li, Dong;Meng, Junlong;Liu, Jingyu;Gai, Yunpeng;Lin, Fu-Cheng

作者机构：

关键词： Isaria cicadae; synnemal formation; metabolites; nutrient utilization; transcriptome profile

期刊名称：JOURNAL OF FUNGI （ 影响因子：5.724； 五年影响因子：6.413 ）

ISSN：

年卷期： 2022 年 8 卷 11 期

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收录情况： SCI

摘要： Isaria cicadae is a famous edible and medicinal fungus in China and Asia. The molecular basis of morphogenesis and synnemal formation needs to be understood in more detail because this is the main source of biomass production in I. cicadae. In the present study, a fruiting body formation-related gene with a glycosylphosphatidylinositol (GPI) anchoring protein (GPI-Ap) gene homolog IcFBR1 was identified by screening random insertion mutants. Targeted deletion of IcFBR1 resulted in abnormal formation of synnemata, impairing aerial hyphae growth and sporulation. The IcFBR1 mutants were defective in the utilization of carbon sources with reduced polysaccharide contents and the regulation of amylase and protease activities. Transcriptome analysis of Delta Icfbr1 showed that IcFBR1 deletion influenced 49 gene ontology terms, including 23 biological processes, 9 molecular functions, and 14 cellular components. IcFBR1 is therefore necessary for regulating synnemal development, secondary metabolism, and nutrient utilization in this important edible and medicinal fungus. This is the first report illustrating that the function of IcFBR1 is associated with the synnemata in I. cicadae.

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