Characterization and fine mapping of a female fertility associated gene Ff1(t) in rice

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• 作者：LEI ZHAO ; SONG YAN ; RENLIANG HUANG ; SHAN ZHU ; HONGLIANG XIONG…
• 关键词：rice ; female fertility weakening ; ovary development ; molecular mapping.
• 刊名：Journal of Genetics
• 出版年：2015
• 出版时间：March 2015
• 年：2015
• 卷：94
• 期：1
• 页码：67-73
• 全文大小：1,811 KB
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• 作者单位：LEI ZHAO (1)
  SONG YAN (2)
  RENLIANG HUANG (2)
  SHAN ZHU (2)
  HONGLIANG XIONG (2)
  ZHIQIN PENG (2) (3)
  QINGYOU ZHOU (4)
  YINGJIN HUANG (1) (3)
  XIANHUA SHEN (2)
  
  1. Key Laboratory of Agriculture Responding to Climate Change, Jiangxi Agricultural University, Nanchang, 30045, People鈥檚 Republic of China
  2. Rice Research Institute, Jiangxi Academy of Agricultural Sciences, Rice National Engineering Laboratory (Nanchang), Jiangxi Provincial Key Laboratory for Physiology and Genetics of Rice, Nanchang, 330200, People鈥檚 Republic of China
  3. Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Jiangxi Agricultural University, Nanchang, 330045, People鈥檚 Republic of China
  4. Agriculture Bureau of Wuning Country, 332300, Jiangxi, People鈥檚 Republic of China
  
• 刊物主题：Life Sciences, general; Microbial Genetics and Genomics; Plant Genetics & Genomics; Animal Genetics and Genomics; Evolutionary Biology;
• 出版者：Springer India
• ISSN：0973-7731

文摘

Female-sterile line can be used as a pollinator which has a great potential for hybrid seeds production. However, reports on female fertility are fewer than male fertility. Here, we characterized a recessive female fertility weakening mutant ff1(t) from rice. The spikelet fertility was seriously affected in the mutant. Reciprocal crosses and pollen vitality assay suggest that the decreased fertility was caused by the defective female gametophytes. Further investigation indicated that the mutant ovary development was inhibited before fertilization and failed swelling after flowering. Genetic analysis and fine mapping showed that the mutant was controlled by a single recessive gene, residing on a 16.8 kb region on the long arm of chromosome 1. The gene annotation indicated that there was only one putative gene encoding lysine decarboxylase-like protein in this region, which was allelic to LOG. Further, the sequence analysis was carried out and a substitution at the splice site of intron 2 / exon 3 was revealed in ff1(t) mutant, resulting in the change of reading frame. The finding of novel allele of LOG locus will facilitate the understanding of the mechanisms of female gametophyte development.