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Author Pareek A, Singh A, Kumar M, Kushwaha HR, Lynn AM, Singla-Pareek SL.
Title Whole-genome analysis of Oryza sativa reveals similar architecture of two-component signaling machinery with Arabidopsis.
The two-component system (TCS), which works on the principle of histidine-aspartate phosphorelay signaling, is known to play an important role in diverse physiological processes in lower organisms and has recently emerged as an important signaling system in plants. Employing the tools of bioinformatics, we have characterized TCS signaling candidate genes in the genome of Oryza sativa L. subsp. japonica. We present a complete overview of TCS gene families in O. sativa, including gene structures, conserved motifs, chromosome locations, and phylogeny. Our analysis indicates a total of 51 genes encoding 73 putative TCS proteins. Fourteen genes encode 22 putative histidine kinases with a conserved histidine and other typical histidine kinase signature sequences, five phosphotransfer genes encoding seven phosphotransfer proteins, and 32 response regulator genes encoding 44 proteins. The variations seen between gene and protein numbers are assumed to result from alternative splicing. These putative proteins have high homology with TCS members that have been shown experimentally to participate in several important physiological phenomena in plants, such as ethylene and cytokinin signaling and phytochrome-mediated responses to light. We conclude that the overall architecture of the TCS machinery in O. sativa and Arabidopsis thaliana is similar, and our analysis provides insights into the conservation and divergence of this important signaling machinery in higher plants.
Journal Plant Physiol.
Country India
Volume 142(2)
Pages 380-97
Year 2006
PubMed ID 16891544
PubMed Central ID -
DOI 10.1104/pp.106.086371
Gene AHP1 AHP2 CKT1 DLC1 ERS1 ERS2 ETR2 ETR3 ETR4 HD2 HK1 HK2 HK3 HK4 HK5 HST1 LHD3 PHP1 PHP2 PHP3 PHYA PHYB PRR59 PRR73 PRR95 RR1 RR10 RR11 RR12 RR13 RR2 RR21 RR23 RR25 RR26 RR27 RR28 RR29 RR3 RR33 RR4 RR5 RR6 RR7 RR8 RR9 TOC1 _ _ _ _
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
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Lethal Embryo
Mutantion Strain
Stages in Each Organ
- Muant Lines (Gene)
Cultivated Varieties(NIG Collection) -
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