Rice leaf inclination2, a VIN3-like protein, regulates leaf angle through modulating cell division of the collar

被引：141

作者：

Zhao, Shu-Qing ^{[1
]}

Hu, Jiang ^{[2
]}

Guo, Long-Biao ^{[2
]}

Qian, Qian ^{[2
]}

Xue, Hong-Wei ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Biol Sci, Inst Plant Physiol & Ecol, Natl Key Lab Plant Mol Genet, Shanghai 200032, Peoples R China

[2] China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou 310006, Zhejiang, Peoples R China

来源：

CELL RESEARCH | 2010年 / 20卷 / 08期

基金：

美国国家科学基金会;

关键词：

leaf inclination; rice; VIN3-like protein; cell division; LC2; PHD FINGER; LAMINA JOINT; ARABIDOPSIS-THALIANA; BRASSINOSTEROIDS; VERNALIZATION; ELONGATION; KINASE; GENES; EXPRESSION; MUTANT;

D O I：

10.1038/cr.2010.109

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

As an important agronomic trait, inclination of leaves is crucial for crop architecture and grain yields. To understand the molecular mechanism controlling rice leaf angles, one rice leaf inclination2 (lc2, three alleles) mutant was identified and functionally characterized. Compared to wild-type plants, lc2 mutants have enlarged leaf angles due to increased cell division in the adaxial epidermis of lamina joint. The LC2 gene was isolated through positional cloning, and encodes a vernalization insensitive 3-like protein. Complementary expression of LC2 reversed the enlarged leaf angles of lc2 plants, confirming its role in controlling leaf inclination. LC2 is mainly expressed in the lamina joint during leaf development, and particularly, is induced by the phytohormones abscisic acid, gibberellic acid, auxin, and brassinosteroids. LC2 is localized in the nucleus and defects of LC2 result in altered expression of cell division and hormone-responsive genes, indicating an important role of LC2 in regulating leaf inclination and mediating hormone effects.

引用

页码：935 / 947

页数：13

共 48 条

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