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- Title
Is there crosstalk between extracellular and intracellular calcium mobilization in jasmonic acid signaling.
- Authors
Qing-peng Sun; Yong-kun Yu; Shan-xia Wan; Fu-kuan Zhao; Yu-lan Hao
- Abstract
Abstract The changes in cytosolic Ca2+ levels play an important role in the jasmonic acid (JA) signal transduction pathway. We demonstrate that an increase in cytosolic free Ca2+ concentration ([Ca2+]cyt) of Arabidopsis leaf cells was affected by pretreatment with heparin and 3,4,5-trimethoxybenzoic acid 8-(diethylamino)octyl ester (TMB-8). With pretreatment of heparin, an antagonist of inositol 1,4,5-trisphosphate (IP3) sensitive channels, the basal and JA induced fluorescence of [Ca2+]cyt were both decreased. Furthermore, heparin and TMB-8, another antagonist of IP3 sensitive channels, enhanced the JA-induced gene expression of JR1. These data suggest that there may be a fine tune control system between extracellular and intracellular Ca2+ mobilization in JA signaling pathway.
- Subjects
JASMONIC acid; CALCIUM channels; CELLULAR signal transduction; ARABIDOPSIS; HEPARIN; FLUORESCENCE; GENE expression
- Publication
Plant Growth Regulation, 2009, Vol 57, Issue 1, p7
- ISSN
0167-6903
- Publication type
Article
- DOI
10.1007/s10725-008-9317-0