a putative transcription factor myt2 regulates perithecium size in the ascomycete gibberella zeae一个假定的转录因子myt2调节子囊壳大小的子囊菌赤霉菌属菌.pdfVIP

a putative transcription factor myt2 regulates perithecium size in the ascomycete gibberella zeae一个假定的转录因子myt2调节子囊壳大小的子囊菌赤霉菌属菌.pdf

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a putative transcription factor myt2 regulates perithecium size in the ascomycete gibberella zeae一个假定的转录因子myt2调节子囊壳大小的子囊菌赤霉菌属菌

A Putative Transcription Factor MYT2 Regulates Perithecium Size in the Ascomycete Gibberella zeae 1 1 1 2 3 3 Yang Lin , Hokyoung Son , Kyunghun Min , Jungkwan Lee , Gyung Ja Choi , Jin-Cheol Kim , Yin- Won Lee1* 1 Department of Agricultural Biotechnology and the Center for Fungal Pathogenesis, Seoul National University, Seoul, Republic of Korea, 2 Department of Applied Biology, Dong-A University, Busan, Republic of Korea, 3 Eco-friendly New Materials Research Group, Research Center for Biobased Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, Daejeon, Republic of Korea Abstract The homothallic ascomycete fungus Gibberella zeae is a plant pathogen that is found worldwide, causing Fusarium head blight (FHB) in cereal crops and ear rot of maize. Ascospores formed in fruiting bodies (i.e., perithecia) are hypothesized to be the primary inocula for FHB disease. Perithecium development is a complex cellular differentiation process controlled by many developmentally regulated genes. In this study, we selected a previously reported putative transcription factor containing the Myb DNA-binding domain MYT2 for an in-depth study on sexual development. The deletion of MYT2 resulted in a larger perithecium, while its overexpression resulted in a smaller perithecium when compared to the wild-type strain. These data suggest that MYT2 regulates perithecium size differentiation. MYT2 overexpression affected pleiotropic phenotypes including vegetative growth, conidia production, virulence, and mycotoxin production. Nuclear localization of the MYT2 protein supports its role as a transcriptional regulator. Transcriptional analyses of trichothecene synthetic genes suggest that MY

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