Over-expression of calcium-dependent protein kinase 13 and calreticulin interacting protein 1 confers cold tolerance on rice plants

被引:144
作者
Komatsu, Setsuko
Yang, Guangxiao
Khan, Monowar
Onodera, Haruko
Toki, Seiichi
Yamaguchi, Masayuki
机构
[1] Natl Inst Crop Sci, Tsukuba, Ibaraki 3058518, Japan
[2] Natl Inst Agrobiol Sci, Tsukuba, Ibaraki 3058602, Japan
[3] Natl Inst Agrobiol Sci, Tsukuba, Ibaraki 3058602, Japan
[4] Natl Inst Crop Sci, Tsukuba, Ibaraki 3058518, Japan
[5] Natl Agr Res Ctr Tohoku Reg, Akita 0140102, Japan
关键词
calreticulin; CDPK13; CRTintP1; cold; rice;
D O I
10.1007/s00438-007-0220-6
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Calcium is a ubiquitous signaling molecule and changes in cytosolic calcium concentration are involved in plant responses to various stimuli. The rice calcium-dependent protein kinase 13 (CDPK13) and calreticulin interacting protein 1 (CRTintP1) have previously been reported to be involved in cold stress response in rice. In this study, rice lines transformed with sense CDPK13 or CRTintP1 constructs were produced and used to investigate the function of these proteins. When the plants were incubated at 5 degrees C for 3 days, leaf blades of both the sense transgenic and vector control rice plants became wilted and curled. When the plants were transferred back to non-stress conditions after cold treatment, the leaf blades died, but the sheaths remained green in the sense transgenic rice plants. Expression of CDPK13 or CRTintP1 was further examined in several rice varieties including cold-tolerant rice varieties. Accumulation of these proteins in the cold-tolerant rice variety was higher than that in rice varieties that are intermediate in their cold tolerance. To examine whether over-expression of CDPK13 and CRTintP1 would have any effect on the proteins or not, sense transgenic rice plants were analyzed using proteomics. The 2D-PAGE profiles of proteins from the vector control were compared with those of the sense transgenic rice plants. Two of the proteins that differed between these lines were calreticulins. The results suggest that CDPK13, calreticulin and CRTintP1 might be important signaling components for response to cold stress in rice.
引用
收藏
页码:713 / 723
页数:11
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