Different roles of glycine-rich RNA-binding protein7 in plant defense against Pectobacterium carotovorum, Botrytis cinerea, and tobacco mosaic viruses.
Glycine-rich RNA-binding protein7 (AtGRP7) has previously been demonstrated to confer plant defense against Pseudomonas syringae DC3000. Here, we show that AtGRP7 can play different roles in plant defense against diverse pathogens. AtGRP7 enhances resistance against a necrotrophic bacterium Pectobacterium carotovorum SCC1 or a biotrophic virus tobacco mosaic virus. By contrast, AtGRP7 plays a negative role in defense against a necrotrophic fungus Botrytis cinerea. These results provide evidence that AtGRP7 is a potent regulator in plant defense response to diverse pathogens, and suggest that the regulation of RNA metabolism by RNA-binding proteins is important for plant innate immunity.
Department of Plant Biotechnology and Kumho Life Science Laboratory, College of Agriculture and Life Sciences, Chonnam National University, 300 Yongbong-dong, Buk-gu, Gwangju 500-757, Republic of Korea.
Hwa Jung
HJ
Lee
Jin Seo
JS
Kim
Seung Jin
SJ
Yoo
Eun Young
EY
Kang
Song Hee
SH
Han
Kwang-Yeol
KY
Yang
Young Cheol
YC
Kim
Brian
B
McSpadden Gardener
Hunseung
H
Kang
D017360:Arabidopsis / Q000235:genetics / Q000276:immunology / Q000378:metabolism / Q000382:microbiology; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism*; D020171:Botrytis / Q000502:physiology*; D004198:Disease Susceptibility; D018506:Gene Expression Regulation, Plant; D009154:Mutation; D016973:Pectobacterium carotovorum / Q000502:physiology*; D010935:Plant Diseases / Q000276:immunology* / Q000382:microbiology; D057865:Plant Immunity; D018515:Plant Leaves / Q000235:genetics / Q000276:immunology / Q000378:metabolism / Q000382:microbiology; D030821:Plants, Genetically Modified; D018749:RNA, Plant / Q000235:genetics / Q000378:metabolism; D016601:RNA-Binding Proteins / Q000235:genetics / Q000378:metabolism*; D014027:Tobacco Mosaic Virus / Q000502:physiology*
D029681:Arabidopsis Proteins; D018749:RNA, Plant; D016601:RNA-Binding Proteins; C118496:GRP7 protein, Arabidopsis