Title Mitogen Activated Protein Kinases (MAPKs) in Plants
Authors İsmail POYRAZ, Emel SÖZEN
Abstract Mitogen-activated protein kinase (MAPK) cascades play roles in signal transduction of eukaryotes, including yeasts, animals and plants. MAPKs are encoded by a large family of serine:threonine protein kinases. Distinct MAPK pathways (MAPK, MAPKK, MAPKKK) are regulated by different extracellular stimuli and lead to a cellular response by transducing the signals to the relevant metabolic pathways. Because of their sessile habit, plants are exposed to a variety of environmental stresses, such as changes in temperature, drought, radiation and wind. In plants there is evidence for MAPKs playing a role in the signaling of abiotic stresses, pathogens and plant hormones. Molecular and biochemical studies using specifi c antibodies to particular MAPKs have revealed that MAPK activation correlates with stimulatory treatments such as pathogen infection, wounding, low temperature, drought, hyper- and hypo-osmolarity, high salinity, touch, and reactive oxygen species. It is known that there are numerous of plant MAPK enzymes proportional to the diversity of stimuli. Although studies have been undertaken intensively on the plant MAPK pathways, working mechanisms of many MAPK enzymes need to be elucidated.
Keywords MAPKs, Signal transduction, Plants.
Journal DERLEME - Turkish Journal of Scientific Reviews
Issue Issue 1
Page 07-16
Year 2008
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