期刊
PLANT MOLECULAR BIOLOGY
卷 70, 期 3, 页码 311-325出版社
SPRINGER
DOI: 10.1007/s11103-009-9475-0
关键词
Rice; Calcium-dependent protein kinases; Expression profile; Phytohormone; Oryza sativa
资金
- National Natural Science Foundation of China
- National High Technology Research and Development Program of Chin(863 Programa)
- National Program on Research and Development of Transgenic Plants
Calcium-dependent protein kinases (CDPKs) control plant development and response to various stress environments through the important roles in the regulation of Ca2+ signaling. Thirty-one CDPK genes have been identified in the rice genome by a complete search of the genome based upon HMM profiles. In this study, the expression of this gene family was analyzed using the Affymetrix rice genome array in three rice cultivars: Minghui 63, Zhenshan 97, and their hybrid Shanyou 63 independently. Twenty-seven tissues sampled throughout the entire rice life-span were studied, along with three hormone treatments (GA3, NAA and KT), applied to the seedling at the trefoil stage. All 31 genes were found to be expressed in at least one of the experimental stages studied and revealed diverse expression patterns. We identified differential expression of the OsCPK genes in the stamen (1 day before flowering), the panicle (at the heading stage), the endosperm (days after pollination) and also in callus, in all three cultivars. Eight genes, OsCPK2, OsCPK11, OsCPK14, OsCPK22, OsCPK25, OsCPK26, OsCPK27 and OsCPK29 were found dominantly expressed in the panicle and the stamen, and five genes, OsCPK6, OsCPK7, OsCPK12, OsCPK23 and OsCPK31 were up-regulated in the endosperm stage. The OsCPK genes were also found to be regulated in rice seedlings subjected to different hormone treatment conditions, however their expression were not the same for all varieties. These diverse expression profiles trigger the functional analysis of the CDPK family in rice.
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