Rice receptor-like kinase OsSI-RLK2 inhibits internode elongation

被引：2
作者：
Wuriyanghan Hada
Chen LiJuan
Dong Yi
Lei Gang
Jia FaXing
Zhang JinSong [1 ]
Chen ShouYi
机构：
[1] Chinese Acad Sci, Inst Genet & Dev Biol, Natl Key Lab Plant Genom, Beijing 100101, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
来源：
CHINESE SCIENCE BULLETIN | 2007年 / 52卷 / 19期
基金：
国家高技术研究发展计划(863计划);
关键词：
receptor-like kinase; OsSI-RLK2; kinase assay; ABA; internode elongation;
D O I：
10.1007/s11434-007-0413-8
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Receptor-like kinase participates in the early events of plant signal transduction pathways. Previously, we screened the receptor-like kinase genes in rice and performed phylogenetic analyses. In this study, we isolated a receptor-like kinase gene, OsSI-RLK2, from rice. Expression of OsSI-RLK2 was induced by ABA treatment. In vitro analysis indicates that OsSI-RLK2 has Mn2+ dependent autophosphorylation activity, but does not have this activity in the presence of Ca2+ and Mg2+. Transgenic rice with over-expressed OsSI-RLK2 displayed shortened internodes resulting in a dwarf phenotype. Taken together, these results suggest that OsSI-RLK2 may represent a new type of functional RLK in rice that can inhibit the elongation of the internode.
引用
收藏
页码：2657 / 2663
页数：7
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