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Use of Metarhizium anisopliae chitinase genes for genotyping and virulence characterization.

Biomed Res Int. 2013; 
Niassy Saliou,Subramanian Sevgan,Ekesi Sunday,Bargul Joel L,Villinger Jandouwe,Maniania Ngu
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摘要

Virulence is the primary factor used for selection of entomopathogenic fungi (EPF) for development as biopesticides. To understand the genetic mechanisms underlying differences in virulence of fungal isolates on various arthropod pests, we compared the chitinase genes, chi2 and chi4, of 8 isolates of Metarhizium anisopliae. The clustering of the isolates showed various groups depending on their virulence. However, the analysis of their chitinase DNA sequences chi2 and chi4 did not reveal major divergences. Although their protein translates have been implicated in fungal virulence, the predicted protein structure of chi2 was identical for all isolates. Despite the critical role of chitin digestion in f... More

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