The Transcriptional Responses of Ectomycorrhizal Fungus, ICenococcum geophilum,/I to Drought Stress

With global warming, drought has become one of the major environmental pressures that threaten the development of global agricultural and forestry production. Cenococcum geophilum (C. geophilum) is one of the most common ectomycorrhizal fungi in nature, which can form mycorrhiza with a large variety...

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Published inJournal of fungi (Basel) Vol. 9; no. 1
Main Authors Li, Mingtao, Yuan, Chao, Zhang, Xiaohui, Pang, Wenbo, Zhang, Panpan, Xie, Rongzhang, Lian, Chunlan, Zhang, Taoxiang
Format Journal Article
LanguageEnglish
Published MDPI AG 01.12.2022
Subjects
Analysis
Fungi
Genetic aspects
Genetic transcription
Global temperature changes
Polyols
Japan
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Summary:With global warming, drought has become one of the major environmental pressures that threaten the development of global agricultural and forestry production. Cenococcum geophilum (C. geophilum) is one of the most common ectomycorrhizal fungi in nature, which can form mycorrhiza with a large variety of host trees of more than 200 tree species from 40 genera of both angiosperms and gymnosperms. In this study, six C. geophilum strains with different drought tolerance were selected to analyze their molecular responses to drought stress with treatment of 10% polyethylene glycol. Our results showed that drought-sensitive strains absorbed Na and K ions to regulate osmotic pressure and up-regulated peroxisome pathway genes to promote the activity of antioxidant enzymes to alleviate drought stress. However, drought-tolerant strains responded to drought stress by up-regulating the functional genes involved in the ubiquinone and other terpenoid-quinone biosynthesis and sphingolipid metabolism pathways. The results provided a foundation for studying the mechanism of C. geophilum response to drought stress.
ISSN:2309-608X
2309-608X
DOI:10.3390/jof9010015