| Literature DB >> 15144900 |
Ayoung Lee1, Kyoungwon Cho, Sungkuk Jang, Randeep Rakwal, Hitoshi Iwahashi, Ganesh Kumar Agrawal, Jaehan Shim, Oksoo Han.
Abstract
This study presents a kinetic analysis of the response to wounding in rice plants. In particular, jasmonic acid, salicylic acid, and lipoxygenase activity were measured in leaves of wounded rice plants during the early tillering phase. The results show that endogenous jasmonic acid transiently increases to a maximum 30 min after wounding (jasmonic acid burst) and lipoxygenase activity increases after the jasmonic acid burst, but not after the second smaller peak of endogenous jasmonic acid 23 h after wounding. In contrast, endogenous salicylic acid decreases during the jasmonic acid burst, such that the kinetic profiles of jasmonic acid and salicylic acid are inversely correlated during the early response to wounding. It is proposed here that the increase in endogenous jasmonic acid and the decrease in endogenous salicylic acid may contribute for establishing the efficient negative cross-talk between jasmonic acid and salicylic acid signaling pathways during the early response to wounding in rice.Entities:
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Year: 2004 PMID： 15144900 DOI： 10.1016/j.bbrc.2004.04.095
Source DB: PubMed Journal: Biochem Biophys Res Commun ISSN： 0006-291X Impact factor: 3.575