title: Pathogen effectors and plant immunity determine specialization of the blast fungus to rice subspecies.
abstract: Understanding how fungi specialize on their plant host is crucial for developing sustainable disease control. A traditional, centuries-old rice agro-system of the Yuanyang terraces was used as a model to show that virulence effectors of the rice blast fungusMagnaporthe oryzaehplay a key role in its specialization on locally grown indica or japonica local rice subspecies. Our results have indicated that major differences in several components of basal immunity and effector-triggered immunity of the japonica and indica rice varieties are associated with specialization ofM. oryzae. These differences thus play a key role in determiningM. oryzaehost specificity and may limit the spread of the pathogen within the Yuanyang agro-system. Specifically, the AVR-Pia effector has been identified as a possible determinant of the specialization ofM. oryzaeto local japonica rice.
authors.affiliation: State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming, China.|Key Laboratory of Agro-Biodiversity and Pest Management of Education Ministry of China, Yunnan Agricultural University, Kunming, China.
authors.forename: Jingjing
authors.initials: J
authors.lastname: Liao
authors.affiliation: State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming, China.|Key Laboratory of Agro-Biodiversity and Pest Management of Education Ministry of China, Yunnan Agricultural University, Kunming, China.
authors.forename: Huichuan
authors.initials: H
authors.lastname: Huang
authors.affiliation: Institut National de la Recherche Agronomique, UMR BGPI, Montpellier, France.
authors.forename: Isabelle
authors.initials: I
authors.lastname: Meusnier
authors.affiliation: Centre de coopération internationale en recherche agronomique pour le développement, UMR BGPI, Montpellier, France.
authors.forename: Henri
authors.initials: H
authors.lastname: Adreit
authors.affiliation: Institut National de la Recherche Agronomique, UMR BGPI, Montpellier, France.
authors.forename: Aurélie
authors.initials: A
authors.lastname: Ducasse
authors.affiliation: Centre de coopération internationale en recherche agronomique pour le développement, UMR BGPI, Montpellier, France.
authors.forename: François
authors.initials: F
authors.lastname: Bonnot
authors.affiliation: State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming, China.|Key Laboratory of Agro-Biodiversity and Pest Management of Education Ministry of China, Yunnan Agricultural University, Kunming, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Pan
authors.affiliation: State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming, China.|Key Laboratory of Agro-Biodiversity and Pest Management of Education Ministry of China, Yunnan Agricultural University, Kunming, China.
authors.forename: Xiahong
authors.initials: X
authors.lastname: He
authors.affiliation: Institut National de la Recherche Agronomique, UMR BGPI, Montpellier, France.
authors.forename: Thomas
authors.initials: T
authors.lastname: Kroj
authors.affiliation: Institut National de la Recherche Agronomique, UMR BGPI, Montpellier, France.
authors.forename: Elisabeth
authors.initials: E
authors.lastname: Fournier
authors.affiliation: Centre de coopération internationale en recherche agronomique pour le développement, UMR BGPI, Montpellier, France.
authors.forename: Didier
authors.initials: D
authors.lastname: Tharreau
authors.affiliation: Institut National de la Recherche Agronomique, UMR BGPI, Montpellier, France.
authors.forename: Pierre
authors.initials: P
authors.lastname: Gladieux
authors.affiliation: Institut National de la Recherche Agronomique, UMR BGPI, Montpellier, France.
authors.forename: Jean-Benoit
authors.identifier: 0000-0003-1988-956X
authors.initials: JB
authors.lastname: Morel
mesh_terms: D058507:Host Specificity; D054884:Host-Pathogen Interactions; D020082:Magnaporthe / Q000472:pathogenicity* / Q000502:physiology; D012275:Oryza / Q000276:immunology* / Q000382:microbiology*; D010935:Plant Diseases / Q000382:microbiology*; D057865:Plant Immunity; D037521:Virulence Factors / Q000378:metabolism*
chemical_list: D037521:Virulence Factors
keywords: Magnaporthe oryzae; Oryza sativa ; effector; immunity; indica japonica; local adaptation; plant biology