MULTI-FLORET SPIKELET1, Which Encodes an AP2/ERF Protein, Determines Spikelet Meristem Fate and Sterile Lemma Identity in Rice

被引：105

作者：

Ren, Deyong ^{[1
,2
]}

Li, Yunfeng ^{[1
,2
,4
]}

Zhao, Fangming ^{[1
,2
,4
]}

Sang, Xianchun ^{[1
,2
,4
]}

Shi, Junqiong ^{[1
,2
]}

Wang, Nan ^{[1
,2
,4
]}

Guo, Shuang ^{[1
,2
,4
]}

Ling, Yinghua ^{[1
,3
,4
]}

Zhang, Changwei ^{[1
,2
,4
]}

Yang, Zhenglin ^{[1
,2
,4
]}

He, Guanghua ^{[1
,2
,3
,4
]}

机构：

[1] Southwest Univ, Rice Res Inst, Chongqing 400715, Peoples R China

[2] Southwest Univ, Chongqing Key Lab Applicat & Safety Control Genet, Chongqing 400715, Peoples R China

[3] Southwest Univ, Minist Educ, Engn Res Ctr South Upland Agr, Chongqing 400715, Peoples R China

[4] Minist Educ, Engn Res Ctr South Upland Agr, Chongqing 400715, Peoples R China

来源：

PLANT PHYSIOLOGY | 2013年 / 162卷 / 02期

基金：

中国国家自然科学基金;

关键词：

REGULATES FLORAL ORGAN; MADS-BOX GENE; EVOLUTIONARY HISTORY; SEPALLATA SUBFAMILY; INFLORESCENCE; EXPRESSION; FAMILY; PALEA; LEAFY-HULL-STERILE1; DIFFERENTIATION;

D O I：

10.1104/pp.113.216044

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The spikelet is a unique inflorescence structure of grass. The molecular mechanism that controls the development of the spikelet remains unclear. In this study, we identified a rice (Oryza sativa) spikelet mutant, multi-floret spikelet1 (mfs1), that showed delayed transformation of spikelet meristems to floral meristems, which resulted in an extra hull-like organ and an elongated rachilla. In addition, the sterile lemma was homeotically converted to the rudimentary glume and the body of the palea was degenerated in mfs1. These results suggest that the MULTI-FLORET SPIKELET1 (MFS1) gene plays an important role in the regulation of spikelet meristem determinacy and floral organ identity. MFS1 belongs to an unknown function clade in the APETALA2/ethylene-responsive factor (AP2/ERF) family. The MFS1-green fluorescent protein fusion protein is localized in the nucleus. MFS1 messenger RNA is expressed in various tissues, especially in the spikelet and floral meristems. Furthermore, our findings suggest that MFS1 positively regulates the expression of LONG STERILE LEMMA and the INDETERMINATE SPIKELET1 (IDS1)-like genes SUPERNUMERARY BRACT and OsIDS1.

引用

页码：872 / 884

页数：13

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