Rice Science ›› 2015, Vol. 22 ›› Issue (1): 44-48.DOI: 10.1016/S1672-6308(14)60276-6

• Orginal Article • Previous Articles     Next Articles

RL3(t), Responsible for Leaf Shape Formation, Delimited to a 46-kb DNA Fragment in Rice

Min Guo, Rong-de Li, Jian Yao, Juan Zhu, Xiang-yun Fan, Wei Wang, Shu-zhu Tang, Ming-hong Gu, Chang-jie Yan()   

  1. Jiangsu Key Laboratory of Crop Genetics and Physiology / Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou 225009, China
  • Received:2014-06-17 Accepted:2014-10-03 Online:2015-01-10 Published:2014-11-26

Abstract:

Two mutants with rolled leaves, temporally designated as rl3(t)-1 and rl3(t)-2, were served for exploring the mechanism underlying the rolled leaf characteristic. Except for having typical rolled leaves, the plant heights and panicle lengths of rl3(t)-1 and rl3(t)-2 significantly decreased, and the seed-setting rate also decreased when compared with wild type 93-11. Cytological analysis suggested that the rolled leaf phenotype might be caused by the changes of number and size of bulliform cells. Genetic analysis indicated rl3(t)-1 is allelic to rl3(t)-2, and controlled by a recessive gene. Gene mapping result indicated that RL3(t) gene resided in a 46-kb long region governed by the sequence tag site markers S3-39 and S3-36 on rice chromosome 3. The result provides an important clue for further cloning the RL3(t) and understanding the mechanism of rice leaf development.

Key words: gene mapping, leaf shape formation, mutant, rice, rolled leaf gene