An ectomycorrhizal fungus, Cenococcum geophilum, in a coastal pine forest has a high tolerance for an insecticide used to control pine wilt disease

Nakashima, Hirofumi; Matsuda, Yosuke; Hijii, Naoki

doi:10.1007/s11355-021-00455-w

Cited by 2 publications

(1 citation statement)

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“…( C. geophilum ), which belongs to the phylum Ascomycota, is one of the most common ECMF in the natural environment. C. geophilum cannot produce fruit bodies, and generally exists in structures of mycelium, sclerotium, and mycorrhiza [ 34 , 35 , 36 , 37 ]. C. geophilum has a rich host plant and is widely distributed in a variety of harsh environments, including in highly polluted sites, arid, and saline environments, which are not conducive to the growth of mycorrhizal fungi [ 38 , 39 ].…”

Section: Introductionmentioning

confidence: 99%

Comparative Physiological and Transcriptome Analysis Provide Insights into the Response of Cenococcum geophilum, an Ectomycorrhizal Fungus to Cadmium Stress

Shi

Yan

Yuan

et al. 2022

JoF

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Cadmium (Cd) displays strong toxicity, high mobility, and cannot be degraded, which poses a serious threat to the environment. Cenococcum geophilum (C. geophilum) is one of the most common ectomycorrhizal fungi (ECMF) in the natural environment. In this study, three Cd sensitive and three Cd tolerant strains of C. geophilum were used to analyze the physiological and molecular responses to Cd exposure. The results showed that Cd inhibited the growth of all strains of C. geophilum but had a less toxic effect on the tolerant strains, which may be correlated to a lower content of Cd and higher activity of antioxidant enzymes in the mycelia of tolerant strains. Comparative transcriptomic analysis was used to identify differentially expressed genes (DEGs) of four selected C. geophilum strains after 2 mg/L Cd treatment. The results showed that the defense response of C. geophilum strain to Cd may be closely related to the differential expression of functional genes involved in cell membrane ion transport, macromolecular compound metabolism, and redox pathways. The results were further confirmed by RT-qPCR analysis. Collectively, this study provides useful information for elucidation of the Cd tolerance mechanism of ECMF.

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