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Author Kumar,K., Rao,K.P., Sharma,P. and Sinha,A.K.
Title Differential regulation of rice mitogen activated protein kinase kinase (MKK) by abiotic stress
Mitogen activated protein kinase cascade plays a crucial role in various biotic and abiotic stresses, hormones, cell division and developmental processes. MAP kinase kinase being integral part of this cascade performs an important function of integrating upstream signals to mitogen activated protein kinase for further appropriate cellular responses. We here report cloning of five MAP kinase kinase members from Oryza sativa indica cultivar var. Pusa Basmati 1, namely MAP kinase kinases 1, 3, 4, 6 and 10-2. All these members, except MKK10-2 possess fully canonical motif structures of MAP kinase kinase. The deduced amino acid sequence showed changes at certain position within japonica and indica variety of rice. Analysis of transcript regulation by quantitative real time PCR revealed that these five members are differentially regulated by cold, heat, salinity and drought stresses. MAP kinase kinases 4 and 6 are strongly regulated by cold and salt stresses while MAP kinase kinase 1 is regulated by salt and drought stresses. MAP kinase kinase 10-2 is regulated only by cold stress. The study provides the indication of involvement of specific MAP kinase kinase in different abiotic stress signaling and also possible cross talks that exist during the signaling processes.
Journal Plant Physiol. Biochem.
Country India
Volume 46(10)
Pages 891-897
Year 2008
PubMed ID 18619847
PubMed Central ID -
DOI 10.1016/j.plaphy.2008.05.014
Gene MKK1 MKK10-1 MKK10-2 MKK10-3 MKK3 MKK5 MKK6 SMG1
INSD DQ779790 DQ848674 EF392366 EF529623 EF666056
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain
Stages in Each Organ
- Muant Lines (Gene)
Cultivated Varieties(NIG Collection) -
Stages in Each Organ -