The mating-type locus b of the sugarcane smut Sporisorium scitamineum is essential for mating, filamentous growth and pathogenicity
文献类型： 外文期刊
作者： Yan, Meixin 2 ; Zhu, Guining; Lin, Shanyu; Xian, Xiaoyong; Chang, Changqing 1 ; Xi, Pinggen 1 ; Shen, Wankuan 1 ;
作者机构： 1.South China Agr Univ, Coll Agr, Guangdong Prov Key Lab Microbial Signals & Dis Co, Guangzhou, Guangdong, Peoples R China
2.Guangxi Acad Agr Sci, Biotechnol Res Inst, Guang
关键词： Mating;Sugarcane smut;bE/bW heterodimeric transcriptional factor;Solopathogenic haploid;Fungal pathogenicity
期刊名称：FUNGAL GENETICS AND BIOLOGY （ 影响因子：3.495； 五年影响因子：3.831 ）
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收录情况： SCI
摘要： Sporisorium scitamineum is the causal agent of sugarcane smut, which is one of the most serious constraints to global sugarcane production. S. scitamineum and Ustilago maydis are two closely related smut fungi, that are predicted to harbor similar sexual mating processes/system. To elucidate the molecular basis of sexual mating in S. scitamineum, we identified and deleted the ortholog of mating-specific U. may-dis locus b, in S. scitamineum. The resultant b-deletion mutant was defective in mating and pathogenicity in S. scitamineum. Furthermore, a functional b locus heterodimer could trigger filamentous growth without mating in S. scitamineum, and functionally replace the b locus in U. maydis in terms of triggering aerial filament production and forming solopathogenic strains, which do not require sexual mating prior to pathogenicity on the host plants. (C) 2015 The Authors. Published by Elsevier Inc.
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