VEGETATIVE1 is essential for development of the compound inflorescence in pea

被引：76

作者：

Berbel, Ana ^{[1
]}

Ferrandiz, Cristina ^{[1
]}

Hecht, Valerie ^{[2
]}

Dalmais, Marion ^{[3
]}

Lund, Ole S. ^{[4
]}

Sussmilch, Frances C. ^{[2
]}

Taylor, Scott A. ^{[2
,5
]}

Bendahmane, Abdelhafid ^{[3
]}

Ellis, T. H. Noel ^{[5
,6
]}

Beltran, Jose P. ^{[1
]}

Weller, James L. ^{[2
]}

Madueno, Francisco ^{[1
]}

机构：

[1] Univ Politecn Valencia, Consejo Super Invest Cient, Inst Biol Mol & Celular Plantas, Valencia 46022, Spain

[2] Univ Tasmania, Sch Plant Sci, Hobart, Tas 7001, Australia

[3] UMR INRA CNRS, Unite Rech Genom Vegetale, F-91057 Evry, France

[4] Danish Inst Agr Sci, Dept Plant Biol, DK-1871 Frederiksberg C, Denmark

[5] John Innes Ctr, Norwich NR4 7UH, Norfolk, England

[6] Aberystwyth Univ, Inst Biol Environm & Rural Sci, Aberystwyth SY23 3EB, Dyfed, Wales

来源：

NATURE COMMUNICATIONS | 2012年 / 3卷

基金：

澳大利亚研究理事会;

关键词：

FLORAL ORGAN IDENTITY; MERISTEM IDENTITY; INTEGRATOR FT; GENE; EVOLUTION; ARCHITECTURE; HOMOLOG; TOOL; DIVERSIFICATION; DUPLICATION;

D O I：

10.1038/ncomms1801

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：

Unravelling the basis of variation in inflorescence architecture is important to understanding how the huge diversity in plant form has been generated. Inflorescences are divided between simple, as in Arabidopsis, with flowers directly formed at the main primary inflorescence axis, and compound, as in legumes, where they are formed at secondary or even higher order axes. The formation of secondary inflorescences predicts a novel genetic function in the development of the compound inflorescences. Here we show that in pea this function is controlled by VEGETATIVE1 (VEG1), whose mutation replaces secondary inflorescences by vegetative branches. We identify VEG1 as an AGL79-like MADS-box gene that specifies secondary inflorescence meristem identity. VEG1 misexpression in meristem identity mutants causes ectopic secondary inflorescence formation, suggesting a model for compound inflorescence development based on antagonistic interactions between VEG1 and genes conferring primary inflorescence and floral identity. Our study defines a novel mechanism to generate inflorescence complexity.

引用

页数：8

共 45 条

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