The levels of jasmonic acid and salicylic acid in a rice-barnyardgrass coexistence system and their relation to rice allelochemicals

作     者：YOU Li-Xin 1,WANG Peng 1,KONG Chui-Hua 2,XU Xiao-Hua 3 1 Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,China 2 College of Resources and Environmental Sciences,China Agricultural University,Beijing 100193,China 3 State Key Laboratory of Elemento-organic Chemistry,Nankai University,Tianjin 300071,China 

会议名称：《中国第五届植物化感作用学术研讨会》

会议日期：2011年

学科分类：09[农学] 0904[农学-植物保护] 0901[农学-作物学] 

摘      要：Despite increasing knowledge of the jasmonic acid (JA) and salicylic acid (SA) as signaling compounds involved in the defense of rice against attacking microbes and insect predators,relatively little is known about their levels in the growth media and their interactions with other plant *** study quantified JA and SA in a rice-barnyardgrass coexistence system followed by correlation analysis to access rice *** rice and barnyardgrass biosynthesized JA and SA,but their contents varied greatly with species,tissue source and *** was a positive correlation in the contents between rice allelochemicals and JA in roots or SA in *** JA was exuded from roots eliciting the production of rice *** was not detected in growth media as an exogenous signaling compound in a rice-barnyardgrass coexistence system,but SA content in rice shoots was an indicator for distinguishing the allelopathic rice traits from the non-allelopathic ***,JA may be an integral part of a general signal transduction system regulating rice-barnyardgrass allelopathic interactions mediated by *** study provided the first data linking the levels of endogenous SA to the allelopathic suppression and allelochemicals among rice varieties.