Arabidopsis GRI is involved in the regulation of cell death induced by extracellular ROS
Contribuinte(s) |
University of Helsinki, Department of Biosciences University of Helsinki, Department of Biosciences University of Helsinki, Department of Biosciences |
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Data(s) |
2009
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Resumo |
Reactive oxygen species (ROS) have important functions in plant stress responses and development. In plants, ozone and pathogen infection induce an extracellular oxidative burst that is involved in the regulation of cell death. However, very little is known about how plants can perceive ROS and regulate the initiation and the containment of cell death. We have identified an Arabidopsis thaliana protein, GRIM REAPER (GRI), that is involved in the regulation of cell death induced by extracellular ROS. Plants with an insertion in GRI display an ozone-sensitive phenotype. GRI is an Arabidopsis ortholog of the tobacco flower-specific Stig1 gene. The GRI protein appears to be processed in leaves with a release of an N-terminal fragment of the protein. Infiltration of the N-terminal fragment of the GRI protein into leaves caused cell death in a superoxide-and salicylic acid-dependent manner. Analysis of the extracellular GRI protein yields information on how plants can initiate ROS-induced cell death during stress response and development. |
Formato |
6 |
Identificador |
http://hdl.handle.net/10138/28518 0027-8424 |
Idioma(s) |
eng |
Publicador |
National Academy of Sciences |
Relação |
Proceedings of the National Academy of Sciences of the United States of America |
Fonte |
Wrzaczek , M , Brosche , M , Kollist , H & Kangasjärvi , J 2009 , ' Arabidopsis GRI is involved in the regulation of cell death induced by extracellular ROS ' Proceedings of the National Academy of Sciences of the United States of America , vol 106 , no. 13 , pp. 5412-5417 . , 10.1073/pnas.0808980106 |
Palavras-Chave | #311 Basic medicine #318 Medical biotechnology #411 Agriculture and forestry #118 Biological sciences #219 Environmental biotechnology #519 Social and economic geography |
Tipo |
A1 Refereed journal article info:eu-repo/semantics/article http://purl.org/eprint/status/NonPeerReviewed |