The biotrophy-associated secreted protein 4 (BAS4) participates in the transition of Magnaporthe oryzae from the biotrophic to the necrotrophic phase
文献类型: 外文期刊
作者: Wang, Chunmei 1 ; Liu, Yanfang 1 ; Liu, Lin 1 ; Wang, Yunfeng 1 ; Yan, Jinlu 1 ; Wang, Changmi 1 ; Li, Chengyun 1 ; Yang, 1 ;
作者机构: 1.Yunnan Agr Univ, State Key Lab Conservat & Utilizat Bioresources Y, Kunming 65000, Yunnan, Peoples R China
2.Yunnan Acad Agr Sci, Qual Stand & Testing Technol Res Inst, Kunming 650205, Yunnan, Peoples R China
关键词: Magnaporthe oryzae; Rice; Effector; Hemibiotrophic fungi
期刊名称:SAUDI JOURNAL OF BIOLOGICAL SCIENCES ( 影响因子:4.219; 五年影响因子:4.432 )
ISSN: 1319-562X
年卷期: 2019 年 26 卷 4 期
页码:
收录情况: SCI
摘要: The physiological and metabolic processes of host plants are manipulated and remodeled by phytopathogenic fungi during infection, revealed obvious signs of biotrophy of the hemibiotrophic pathogen. As we known that effector proteins play key roles in interaction of hemibiotrophic fungi and their host plants. BAS4 (biotrophy-associated secreted protein 4) is an EIHM (extrainvasive hyphal membrane) matrix protein that was highly expressed in infectious hyphae. In order to study whether BAS4 is involved in the transition of rice blast fungus from biotrophic to necrotrophic phase, The susceptible rice cultivar Lijiangxintuanheigu (LTH) that were pre-treated with prokaryotic expression product of BAS4 and then followed with inoculation of the blast strain, more serious blast disease symptom, more biomass such as sporulation and fungal relative growth, and lower expression level of pathogenicity-related genes appeared in lesion of the rice leaves than those of the PBS-pretreated-leaves followed with inoculation of the same blast strain, which demonstrating that BAS4 invitro changed rice defense system to facilitate infection of rice blast strain. And the susceptible rice cultivar (LTH) were inoculated with BAS4-overexpressed blast strain, we also found more serious blast disease symptom and more biomass also appeared in lesion of leaves inoculated with BAS4-overexpressed strain than those of leaves inoculated with the wild-type strain, and expression level of pathogenicity-related genes appeared lower in biotrophic phase and higher in necrotrophic phase of infection, indicating BAS4 maybe in vivo regulate defense system of rice to facilitate transition of biotrophic to necrotrophic phase. Our data demonstrates that BAS4 in vitro and in vivo participates in transition from the biotrophic to the necrotrophic phase of Magnaporthe oryzae. (C) 2019 The Authors. Production and hosting by Elsevier B.V. on behalf of King Saud University.
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