Toll signal pathway activating eicosanoid biosynthesis shares its conserved upstream recognition components in a lepidopteran Spodoptera exigua upon infection by Metarhizium rileyi, an entomopathogenic fungus

2021 ◽  
pp. 107707
Author(s):  
Miltan Chandra Roy ◽  
Yonggyun Kim
Keyword(s):  
Entomopathogenic Fungus ◽  
Spodoptera Exigua ◽  
Signal Pathway ◽  
Metarhizium Rileyi

scholarly journals Analogous and Diverse Functions of APSES-Type Transcription Factors in the Morphogenesis of the Entomopathogenic Fungus Metarhizium rileyi

2020 ◽  
Vol 86 (8) ◽  
Author(s):  
Caiyan Xin ◽  
Jinping Zhang ◽  
Siji Nian ◽  
Guangxi Wang ◽  
Zhongkang Wang ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Transcriptome Analysis ◽  
Entomopathogenic Fungus ◽  
Regulatory Mechanisms ◽  
Sequencing Analysis ◽  
Fungal Virulence ◽  
Content Type ◽  
Dimorphic Transition ◽  
Metarhizium Rileyi ◽  
Fungal Morphogenesis

ABSTRACT APSES-type transcription factors (TFs) have analogous and diverse functions in the regulation of fungal morphogenesis processes. However, little is known about these functions in microsclerotium formation. In this study, we characterized two orthologous APSES genes (MrStuA and MrXbp) in the entomopathogenic fungus Metarhizium rileyi. Deletion of either MrStuA or MrXbp impaired dimorphic transition, conidiation, fungal virulence, and microsclerotium formation. Compared with the wild-type strain, ΔMrStuA and ΔMrXbp mutants were hypersensitive to thermal and oxidative stress. Furthermore, transcriptome sequencing analysis revealed that MrStuA and MrXbp independently regulate their own distinctive subsets of signaling pathways during dimorphic transition and microsclerotium formation, but they also show an overlapping regulation of genes during these two distinct morphogenesis processes. These results provide a global insight into vital roles of MrStuA and MrXbp in M. rileyi and aid in dissection of the interacting regulatory mechanisms of dimorphism transition and microsclerotium development. IMPORTANCE Transcription factors (TFs) are core components of the signaling pathway and play an important role in transcriptional regulation of gene expression during fungal morphogenesis processes. A prevailing theory suggests an interplay between different TFs regulating microsclerotial differentiation; however, the persisting issue remains that these interplay mechanisms are not clear. Here, we analyzed two members of the APSES-type TFs in Metarhizium rileyi using a gene deletion strategy and transcriptome analysis. Mutants were significantly impaired in microsclerotium formation and dimorphic transition. Transcriptome analysis provided evidence for interacting regulatory mechanisms by the two TFs in microsclerotium formation and dimorphic transition. Furthermore, we investigated their overlapping roles in mediating the expression of genes required for different fungal morphogenesis processes. Characterization of TFs in this study will aid in dissecting the interplay between regulatory mechanisms in fungal morphogenesis processes.

scholarly journals Characteristics and Virulence Assay of Entomopathogenic Fungus Nomuraea rileyi for the Microbial Control of Spodoptera exigua (Lepidoptera: Noctuidae)

2012 ◽  
Vol 48 (4) ◽  
pp. 284-292 ◽  
Author(s):  
Won Woo Lee ◽  
Tae Young Shin ◽  
Seung Hyun Ko ◽  
Jae Bang Choi ◽  
Sung Min Bae ◽  
...  
Keyword(s):  
Entomopathogenic Fungus ◽  
Spodoptera Exigua ◽  
Microbial Control ◽  
Nomuraea Rileyi ◽  
Virulence Assay ◽  
Lepidoptera Noctuidae

scholarly journals Complete mitogenome of the entomopathogenic fungus Metarhizium rileyi

2020 ◽  
Vol 5 (2) ◽  
pp. 1494-1495
Author(s):  
Shu Zhang ◽  
Li-Yuan Ren ◽  
Yong-Jie Zhang
Keyword(s):  
Entomopathogenic Fungus ◽  
Metarhizium Rileyi ◽  
Complete Mitogenome

scholarly journals Identification of an entomopathogenic fungus, Nomuraea rileyi ANU101, infecting the beet armyworm, Spodoptera exigua, in Korea

2009 ◽  
Vol 37 (2) ◽  
pp. 139-143 ◽  
Author(s):  
Ji-Hyeun Hwang ◽  
Bok-Ri Park ◽  
Geun-Seop Kim ◽  
Sun-Gu Lee ◽  
Yong-Gyun Kim
Keyword(s):  
Entomopathogenic Fungus ◽  
Spodoptera Exigua ◽  
Beet Armyworm ◽  
Nomuraea Rileyi
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