J Integr Plant Biol. ›› 2016, Vol. 58 ›› Issue (6): 529-539.DOI: 10.1111/jipb.12441

Special Issue: Rice Genomics and Agriculture

• Cell and Developmental Biology • Previous Articles     Next Articles

The pleiotropic ABNORMAL FLOWER AND DWARF1 affects plant height, floral development and grain yield in rice

Deyong Ren1†, Yuchun Rao1,2†, Liwen Wu1†, Qiankun Xu1, Zizhuang Li1,3, Haiping Yu1, Yu Zhang1, Yujia Leng1, Jiang Hu1, Li Zhu1, Zhenyu Gao1, Guojun Dong1, Guangheng Zhang1, Longbiao Guo1, Dali Zeng1* and Qian Qian1*   

  1. 1State Key Lab for Rice Biology, China National Rice Research Institute, Hangzhou, China
    2College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, China
    3College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
  • Received:2015-08-04 Accepted:2015-10-16 Published:2015-10-21
  • About author:These authors contributed equally to this work.
    **Correspondence: E-mail: qianqian188@hotmail.com; dalizeng@126.com (Dr. Qian is fully responsible for distributions of all materials associated with this article)

Abstract:

Moderate plant height and successful establishment of reproductive organs play pivotal roles in rice grain production. The molecular mechanism that controls the two aspects remains unclear in rice. In the present study, we characterized a rice gene, ABNORMAL FLOWER AND DWARF1 (AFD1) that determined plant height, floral development and grain yield. The afd1 mutant showed variable defects including the dwarfism, long panicle, low seed setting and reduced grain yield. In addition, abnormal floral organs were also observed in the afd1 mutant including slender and thick hulls, and hull-like lodicules. AFD1 encoded a DUF640 domain protein and was expressed in all tested tissues and organs. Subcellular localization showed AFD1-green fluorescent fusion protein (GFP) was localized in the nucleus. Meantime, our results suggested that AFD1 regulated the expression of cell division and expansion related genes.

Key words: Plant height, hull, lodicule, grain yield, AFD1, rice (Oryza sativa)

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