4.5 Article

Characterization of a cytolytic-like gene from the aphid-obligate fungal pathogen Conidiobolus obscurus

Journal

JOURNAL OF INVERTEBRATE PATHOLOGY
Volume 173, Issue -, Pages -

Publisher

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jip.2020.107366

Keywords

Entomotoxin; Entomophthorales; Fungal virulence; Sequence analysis

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Funding

  1. National Natural Science Foundation of China [31870637]

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Cytolytic (Cyt)-like genes are known by omics analyses to exist widely in bacterial and fungal pathogens, but their insecticidal activities in fungi remains unknown. A full-length coding sequence of a Cyt-like gene was first amplified from Conidiobolus obscurus (an obligate aphid-pathogenic fungus) through RACE (rapid-amplification of cDNA ends). The deduced protein structure was structurally characterized by a single Cyt-typical alpha/beta domain. The expression level of the Cyt-like gene in conidia correlated well with the fungal virulence against aphids (r(2) = 0.97). The results demonstrate the Cyt-like gene acts as an important virulence factor of C. obscurus against aphids, and has potential for exploitation in aphid control.

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