The white collar complex is involved in sexual development of Fusarium graminearum

PloS One
Hun KimSung-Hwan Yun

Abstract

Sexual spores (ascospores) of Fusarium graminearum, a homothallic ascomycetous fungus, are believed to be the primary inocula for epidemics of the diseases caused by this species in cereal crops. Based on the light requirement for the formation of fruiting bodies (perithecia) of F. graminearum under laboratory conditions, we explored whether photoreceptors play an important role in sexual development. Here, we evaluated the roles of three genes encoding putative photoreceptors [a phytochrome gene (FgFph) and two white collar genes (FgWc-1 and FgWc-2)] during sexual development in F. graminearum. For functional analyses, we generated transgenic strains lacking one or two genes from the self-fertile Z3643 strain. Unlike the wild-type (WT) and add-back strains, the single deletion strains (ΔFgWc-1 and ΔFgWc-2) produced fertile perithecia under constant light on complete medium (CM, an unfavorable medium for sexual development) as well as on carrot agar (a perithecial induction condition). The expression of mating-type (MAT) genes increased significantly in the gene deletion strains compared to the WT under both conditions. Deletion of FgFph had no significant effect on sexual development or MAT gene expression. In contrast, all of...Continue Reading

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Citations

Jun 27, 2017·Fungal Genetics and Biology : FG & B·Julia Schumacher
Oct 30, 2018·Frontiers in Plant Science·Sofia D Carvalho, José A Castillo
Mar 16, 2021·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Aba Losi, Wolfgang Gärtner
May 11, 2021·Molecular Plant Pathology·Qussai ZuriegatYingzi Yun

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Methods Mentioned

BETA
transgenic
PCR

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