Genome-Wide Phylogenetic Analysis of Stress-Activated Protein Kinase Genes in Rice (OsSAPKs) and Expression Profiling in Response to Xanthomonas oryzae pv. oryzicola Infection

All members of the SnRK2 protein kinase gene family encoded by the rice ( Oryza sativa L.) genome are activated by hyperosmotic stress, and have been designated as stress-activated protein kinases (SAPKs). In this study, gene structures, phylogeny, and conserved motifs for the entire OsSAPK gene fam...

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Bibliographic Details
Published in:Plant molecular biology reporter 2013-08, Vol.31 (4), p.877-885
Main Authors: Xu, Mei-Rong, Huang, Li-Yu, Zhang, Fan, Zhu, Ling-Hua, Zhou, Yong-Li, Li, Zhi-Kang
Format: Article
Language:English
Subjects:
Bioinformatics
Biomedical and Life Sciences
Cultivars
Cytoplasm
Dissection
Gene expression
Genes
Genomes
Infections
Kinases
Life Sciences
MAP kinase
Metabolomics
Nuclei
Original Paper
Oryza sativa japonica
Phylogeny
Plant Breeding/Biotechnology
Plant Sciences
Proteins
Proteomics
Rice
Signal transduction
Stress analysis
Transduction
Xanthomonas oryzae
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Summary:All members of the SnRK2 protein kinase gene family encoded by the rice ( Oryza sativa L.) genome are activated by hyperosmotic stress, and have been designated as stress-activated protein kinases (SAPKs). In this study, gene structures, phylogeny, and conserved motifs for the entire OsSAPK gene family in rice have been analyzed. Moreover, expression patterns of OsSAPK in response to infection with Xanthomonas oryzae pv. oryzicola ( Xoc ) were investigated. A total of ten OsSAPK genes in the japonica rice cultivar 9804 were identified and classified into four groups. All genes had similar exon–intron structures and organization of putative motifs/domains, and shared the same four motifs (motifs 1–4). Group I (OsSAPK1 and OsSAPK2) shared another two motifs (motif 5 and motif 10), while group III (OsSAPK8, OsSAPK9 and OsSAPK10) had seven motifs in common (motifs 1–7). Moreover, we found that four OsSAPKs , including OsSAPK3 , OsSAPK5 , OsSAPK7 and OsSAPK9 , were significantly upregulated in response to infection by Xoc in rice plants carrying the nonhost resistance gene Rxo1 . Four of the OsSAPK genes in which expression was upregulated were localized to both the cytoplasm and nucleus, but clustered in different groups, suggesting that they are involved in different resistance signal transduction pathways. These results will provide useful information for the future functional dissection of this gene family.
ISSN:0735-9640
1572-9818
DOI:10.1007/s11105-013-0559-2