Geographical diversity of proteomic responses to cold stress in the fungal genus Pseudogymnoascus
Document Type
Article
Publication Date
12-1-2024
Abstract
In understanding stress response mechanisms in fungi, cold stress has received less attention than heat stress. However, cold stress has shown its importance in various research fields. The following study examined the cold stress response of six Pseudogymnoascus spp. isolated from various biogeographical regions through a proteomic approach. In total, 2541 proteins were identified with high confidence. Gene Ontology enrichment analysis showed diversity in the cold stress response pathways for all six Pseudogymnoascus spp. isolates, with metabolic and translation-related processes being prominent in most isolates. 25.6% of the proteins with an increase in relative abundance were increased by more than 3.0-fold. There was no link between the geographical origin of the isolates and the cold stress response of Pseudogymnoascus spp. However, one Antarctic isolate, sp3, showed a distinctive cold stress response profile involving increased flavin/riboflavin biosynthesis and methane metabolism. This Antarctic isolate (sp3) was also the only one that showed decreased phospholipid metabolism in cold stress conditions. This work will improve our understanding of the mechanisms of cold stress response and adaptation in psychrotolerant soil microfungi, with specific attention to the fungal genus Pseudogymnoascus.
Keywords
Soil microfungi, Metabolic pathways, Cold adaptation, Lipid metabolism, Fungal adaptation, Methane metabolism
Divisions
ocean
Funders
Majlis Amanah Rakyat IOES-2014G IOES-2023E,Malaysian Ministry of Higher Education (MOHE) through their funding programme-Higher Institution Centre of Excellence (HiCoE) RP026A-18SUS
Publication Title
MICROBIAL ECOLOGY
Volume
87
Issue
1
Publisher
SPRINGER
Publisher Location
ONE NEW YORK PLAZA, SUITE 4600, NEW YORK, NY, UNITED STATES