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Differential regulation of rice mitogen activated protein kinase kinase (MKK) by abiotic stress

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Title Differential regulation of rice mitogen activated protein kinase kinase (MKK) by abiotic stress
 
Creator Kumar, Kundan
Rao, Kudupudi Prabhakara
Sharma, Pallavi
Sinha, Alok Krishna
 
Subject MAPK cascade
MAP kinase kinase (MKK)
Rice
Abiotic stress
Quantitative real time PCR
Transcript regulation
 
Description 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.
This work is supported by financial assistance from Department of Biotechnology (DBT), Govt. of India.
 
Date 2013-11-07T10:52:32Z
2013-11-07T10:52:32Z
2008
July 2008
 
Type Article
 
Identifier Plant Physiology and Biochemistry, 46: 891-897
http://hdl.handle.net/123456789/91
 
Language en
 
Publisher Elsevier B.V.