The Secreted Protein MoHrip1 Is Necessary for the Virulence of Magnaporthe oryzae

Secreted effectors from play critical roles in the interaction with rice to facilitate fungal infection and disease development. -secreted protein MoHrip1 can improve plant defense as an elicitor in vitro, however, its biological function in fungal infection is not clear. In this study, we found tha...

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Published in:International journal of molecular sciences 2019-04, Vol.20 (7), p.1643
Main Authors: Nie, Hai-Zhen, Zhang, Lin, Zhuang, Hui-Qian, Shi, Wen-Jiong, Yang, Xiu-Fen, Qiu, De-Wen, Zeng, Hong-Mei
Format: Article
Language:English
Subjects:
Amino acids
Bioassays
expression pattern
Fungal Proteins - genetics
Fungal Proteins - metabolism
Gene expression
Gene Expression Regulation, Fungal
Genes, Plant
Infections
Inoculation
Magnaporthe - growth & development
Magnaporthe - metabolism
Magnaporthe - pathogenicity
Magnaporthe - physiology
Magnaporthe oryzae
MoHrip1
Mutation - genetics
Nlr protein
Oryza - genetics
Oryza - immunology
Oryza - microbiology
Pathogens
Plant Immunity
Plant resistance
Proteins
Sheaths
Signal transduction
Virulence
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Summary:Secreted effectors from play critical roles in the interaction with rice to facilitate fungal infection and disease development. -secreted protein MoHrip1 can improve plant defense as an elicitor in vitro, however, its biological function in fungal infection is not clear. In this study, we found that the expression of was significantly induced in the stages of fungal penetration and colonization. Although dispensable for the growth and conidiation, MoHrip1 was necessary for the full virulence of . Deletion of remarkably compromised fungal virulence on rice seedlings and even on rice leaves with wounds. Rice sheath inoculation assay further demonstrated the defects of -deleted mutants on penetration and proliferation in rice cells. Additionally, compared with WT and complementation strain, the inoculation of -deleted mutants induced a higher expression of specific defense related genes and a higher production of specific defensive compounds in rice leaves. These data collectively indicated that MoHrip1 is necessary for fungal penetration and invasive expansion, and further full virulence of rice blast fungus.
ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms20071643