Overexpression of rice LRK1 restricts internode elongation by down-regulating OsKO2

被引：12

作者：

Yang, Mengfei ^{[1
]}

Qi, Weiwei ^{[1
]}

Sun, Fan ^{[1
]}

Zha, Xiaojun ^{[1
]}

Chen, Mingluan ^{[2
]}

Huang, Yunqing ^{[2
]}

Feng, Yu-Qi ^{[2
]}

Yang, Jinshui ^{[1
]}

Luo, Xiaojin ^{[1
]}

机构：

[1] Fudan Univ, Inst Genet, Sch Life Sci, State Key Lab Genet Engn, Shanghai 200433, Peoples R China

[2] Wuhan Univ, Key Lab Analyt Chem Biol & Med, Dept Chem, Wuhan 430072, Peoples R China

来源：

BIOTECHNOLOGY LETTERS | 2013年 / 35卷 / 01期

关键词：

ibberellins; Internode elongation; LRK1; gene; OsKO2; Phytosulfokine; PHYTOSULFOKINE-ALPHA; GENE; EXPRESSION; PEPTIDE; PROLIFERATION; BIOSYNTHESIS; PROTEIN; ENCODES; KINASE; YIELD;

D O I：

10.1007/s10529-012-1054-9

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Rice (Oryza sativa) has the potential to undergo rapid internodal elongation which determines plant height. Gibberellin is involved in internode elongation. Leucine-rich repeat receptor-like kinases (LRR-RLKs) are the largest subfamily of transmembrane receptor-like kinases in plants. LRR-RLKs play important functions in mediating a variety of cellular processes and regulating responses to environmental signals. LRK1, a PSK receptor homolog, is a member of the LRR-RLK family. In the present study, differences in ectopic expression of LRK1 were consistent with extent of rice internode elongation. Analyses of gene expression demonstrated that LRK1 restricts gibberellin biosynthesis during the internode elongation process by down-regulation of the gibberellin biosynthetic gene coding for ent-kaurene oxidase.

引用

页码：121 / 128

页数：8

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