The genetic basis of singlet oxygen-induced stress responses of Arabidopsis thaliana.
Plants under oxidative stress suffer from damages that have been interpreted as unavoidable consequences of injuries inflicted upon plants by toxic levels of reactive oxygen species (ROS). However, this paradigm needs to be modified. Inactivation of a single gene, EXECUTER1, is sufficient to abrogate stress responses of Arabidopsis thaliana caused by the release of singlet oxygen: External conditions under which these stress responses are observed and the amounts of ROS that accumulate in plants exposed to these environmental conditions do not directly cause damages. Instead, seedling lethality and growth inhibition of mature plants result from genetic programs that are activated after the release of singlet oxygen has been perceived by the plant.
Wagner
Daniela
D
Institute of Plant Sciences, Plant Genetics, Swiss Federal Institute of Technology (ETH), CH-8092 Zurich, Switzerland.
Przybyla
Dominika
D
Op den Camp
Roel
R
Kim
Chanhong
C
Landgraf
Frank
F
Lee
Keun Pyo
KP
Würsch
Marco
M
Laloi
Christophe
C
Nater
Mena
M
Hideg
Eva
E
Apel
Klaus
K
D000595:Amino Acid Sequence; D017360:Arabidopsis / Q000166:cytology / Q000235:genetics* / Q000254:growth & development / Q000502:physiology*; D029681:Arabidopsis Proteins / Q000737:chemistry / Q000235:genetics* / Q000502:physiology*; D016923:Cell Death / Q000187:drug effects; D002874:Chromosome Mapping; D003001:Cloning, Molecular; D003360:Cosmids; D003624:Darkness; D004237:Diuron / Q000494:pharmacology; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D005816:Genetic Complementation Test; D008027:Light; D008969:Molecular Sequence Data; D009154:Mutation; D016366:Open Reading Frames; D018384:Oxidative Stress; D045332:Photosystem II Protein Complex / Q000378:metabolism; D018515:Plant Leaves / Q000166:cytology / Q000187:drug effects / Q000378:metabolism; D017382:Reactive Oxygen Species / Q000378:metabolism; D026082:Singlet Oxygen / Q000378:metabolism*; D014170:Transformation, Genetic
D029681:Arabidopsis Proteins; C521350:EXECUTER1 protein, Arabidopsis; D045332:Photosystem II Protein Complex; D017382:Reactive Oxygen Species; D026082:Singlet Oxygen; D004237:Diuron