G protein regulation of disease resistance during infection of rice with rice blast fungus.
When the effects of specific pathogen-produced elicitor compounds on plant cells are recognized by specific plant resistance (R) gene products, a local defense response called the hypersensitive response is triggered. Production of reactive oxygen species (ROS) and induction of defense genes are components of this response. In rice cultivars harboring null mutations in the G protein alpha subunit, RGA1, ROS production and defense gene induction by the rice blast fungus Magnaporthe grisea and its sphingolipid elicitors are reduced or delayed. These results implicate heterotrimeric guanine nucleotide-binding proteins (G proteins) as important players in plant pathogen response.
Assmann
Sarah M
SM
Biology Department, Penn State University, 208 Mueller Laboratory, University Park, PA 16802, USA. sma3@psu.edu
D017209:Apoptosis; D019204:GTP-Binding Proteins / Q000235:genetics / Q000502:physiology*; D017343:Genes, Plant; D007113:Immunity, Innate / Q000235:genetics; D020935:MAP Kinase Signaling System; D020082:Magnaporthe / Q000235:genetics / Q000472:pathogenicity / Q000502:physiology*; D008954:Models, Biological; D012275:Oryza / Q000235:genetics / Q000382:microbiology / Q000502:physiology*; D010935:Plant Diseases / Q000382:microbiology; D010940:Plant Proteins / Q000235:genetics / Q000502:physiology*; D017382:Reactive Oxygen Species; D015398:Signal Transduction / Q000502:physiology*; D013107:Sphingolipids / Q000502:physiology; D014774:Virulence / Q000235:genetics
D010940:Plant Proteins; D017382:Reactive Oxygen Species; D013107:Sphingolipids; D019204:GTP-Binding Proteins