Scientia Agricultura Sinica ›› 2010, Vol. 43 ›› Issue (5): 942-948 .doi: 10.3864/j.issn.0578-1752.2010.05.007

• TILLAGE & CULTIVATION·PHYSIOLOGY & BIOCHEMISTRY • Previous Articles     Next Articles

Extracellular and Intracellular Calcium both Involved in the Jasmonic Acid Induced Calcium Mobilization in Arabidopsis thaliana

SUN Qing-peng, YU Yong-kun, WAN Shan-xia, ZHAO Fu-kuan, HAO Yu-lan
   

  1. （北京农学院生物技术系）
  • Received:2009-06-16 Revised:2009-09-07 Online:2010-03-01 Published:2010-03-01

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Abstract:

【Objective】 The objective of this experiment is to evaluate the role of intracellular and extracellular Ca2+ and calmodulin (CaM) in JA signaling. 【Method】 The Laser Scanning Microscopy was used to detect the changes of [Ca2+]cyt of Arabidopsis thaliana leaf cells which pretreated with different types of calcium channel blocker. Moreover, the expression of JA response gene, VSP, was also investigated after pretreated with the above blocker and antagonist of CaM. 【Result】 The results showed that extracellular and intracellular calcium both involved in the JA induced Ca2+ mobilization, and then Ca2+ exerts its functions through activating the CaM or CaM related proteins. 【Conclusion】 The apoplast calcium influx and the calcium release from the calcium stores are both involved in the JA induced calcium mobilization, then the JA induced Ca2+ transmits the JA signal through CaM or CaM related proteins, and regulate the JA responsive genes.

Key words: Arabidopsis thaliana, Ca2+, jasmonic acid, CaM

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