Molecular Isolation of the M Gene Suggests That a Conserved-Residue Conversion Induces the Formation of Bisexual Flowers in Cucumber Plants

Author:

Li Zheng1,Huang Sanwen2,Liu Shiqiang2,Pan Junsong1,Zhang Zhonghua2,Tao Qianyi1,Shi Qiuxiang2,Jia Zhiqi2,Zhang Weiwei1,Chen Huiming3,Si Longting4,Zhu Lihuang5,Cai Run1

Affiliation:

1. School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, China

2. Institute of Vegetables and Flowers, Chinese Academy of Agriculture Sciences, Beijing 100081, China

3. Hunan Vegetable Research Institute, Hunan Academy of Agriculture Sciences, Changsha 410125, China

4. School of Horticulture, Shenyang Agriculture University, Shenyang 110161, China and

5. Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China

Abstract

Abstract Sex determination in plants involves a variety of mechanisms. Here, we report the map-based cloning and characterization of the unisexual-flower-controlling gene M. M was identified as a previously characterized putative 1-aminocyclopropane-1-carboxylic acid synthase gene, while the m allele that mutated at a conserved site (Gly33Cys) lost activity in the original enzymatically active allele.

Publisher

Oxford University Press (OUP)

Subject

Genetics

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