摘要
脱落酸(ABA)和茉莉酸(JA)在诱导植物产生抗逆性过程中具有重要作用.以马尾松为试验材料,用GC/MS检测了马尾松毛虫咬食、外源茉莉酸甲酯(MeJA)熏蒸和萜烯混合物熏蒸处理4 h后,马尾松损伤针叶、相邻姊妹针叶(处理同一轮未受损伤枝条)、系统上枝针叶(处理枝上一轮枝条)和系统下枝针叶(处理枝下一轮枝条)中ABA和JA含量的变化.结果表明,虫害4 h后,马尾松损伤针叶、相邻姊妹针叶、系统上枝针叶和系统下枝针叶的ABA和JA含量均明显升高.用10μmol.L-1MeJA熏蒸和10μmol.L-1萜烯混合物熏蒸健康植株后,各部位枝条针叶中ABA和JA含量明显升高.说明ABA和JA是马尾松苗木伤反应信号传导途径中的重要信号分子,参与了马尾松苗木系统抗性的形成过程.
Abscisic acid (ABA) and Jasmonic acid (JA) play an important role in inducing the stress-resistance of plants. In this study, parts of the needles on a ring of Pinus massoniana seedling shoots were subjected to 4 hours Dendrolimus punctatus feeding or 4 hours fumigation with 10umol·L^-1 of methyl jasmonate (MeJA) or terpenes, and the ABA and JA contents in treated needles, untreated neighboring sister needles, and untreated needles above and below the ring were determined by GC/MS. An obvious increase of ABA and JA contents was observed in all of the needles, whether they were treated or not, illustrating that ABA and JA were the vital signaling molecules in the wound signal transduction pathway, and participated in the formation of systematic resistance of P. massoniana seedlings.
出处
《应用生态学报》
CAS
CSCD
北大核心
2009年第5期1166-1170,共5页
Chinese Journal of Applied Ecology
基金
国家自然科学基金重点项目(30330490)
国家林业局重点项目(2006-59)
国家"十一五"科技支撑计划项目(2006BAD01A15
2006BAD24B04))
长江学者与创新团队发展计划项目(PCSIRT0607)资助.
关键词
脱落酸
茉莉酸
马尾松
马尾松毛虫
Abscisic acid
Jasmonic acid
Pinus massoniana
Dendrolimus punctatus