RICE SCIENCE ›› 2006, Vol. 13 ›› Issue (3): 193-198 .

• Research Paper • Previous Articles     Next Articles

Comparison of Tissue Transglutaminase Activity During Young Panicle Development in Honglian-type Cytoplasmic Male Sterile Rice

CHANG Xun1, ZHANG Zai-jun1,2, LI Yang-sheng1, ZHU Ying-guo1   

  1. 1Key Laboratory of the Education Ministry of China for Developmental Biology, College of Life Sciences, Wuhan University, Wuhan 430072, China; 2Agricultural College, Yangtze University, Jingzhou 434025, China
  • Received:2006-03-04 Online:2006-09-28 Published:2006-09-28
  • Contact: LI Yang-sheng
  • Supported by:
    Chinese National “973” Projects (No. 2001CB108806) and Science innovation (No. C01020305).

Abstract: To investigate the changes of tissue transglutaminase activity, the leaves and young panicles of rice at different developmental stages were excised from the Honglian-type cytoplasmic male sterile line, Yuetai A and its maintainer line, Yuetai B, respectively. An ELISA measurement protocol for tissue transglutaminase activity detection in rice was well established. The results indicated that the tissue transglutaminase activity was regulated positively by calcium cation, and the tissue transglutaminase activity in senescent leaves was remarkably higher than that in young leaves. No distinct difference was noted between Yuetai A and Yuetai B. Moreover, from the tetrad to binucleate stages the tissue transglutaminase activity increased gradually with the progression of the young panicle development and up to maximum at binucleate stage in Yuetai A. However, no similar changes were observed in Yuetai B. This indicates that the tissue transglutaminase is involved in cell programmed death in abortive pollen.

Key words: rice, cytoplasmic male sterility, young panicle development, tissue transglutaminase, programmed cell death