CHEMICAL-MODEL FOR SHORT-TERM INDUCTION IN QUAKING ASPEN (POPULUS-TREMULOIDES) FOLIAGE AGAINST HERBIVORES
CHEMICAL-MODEL FOR SHORT-TERM INDUCTION IN QUAKING ASPEN (POPULUS-TREMULOIDES) FOLIAGE AGAINST HERBIVORES
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DOI：
10.1007/bf01012085
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发表时间：
1989-09-01
影响因子：
2.3
通讯作者：
FRISBY, K
中科院分区：
文献类型：
--
作者：
CLAUSEN, TP;REICHARDT, PB;FRISBY, K
模拟山杨(Choristoneura Conflictana)对山杨的取食，在24小时内诱导叶片中两种酚苷--水杨皮苷和三尖杉酸的浓度显著增加。当白杨树叶被大白杨等咀嚼昆虫吃掉时，必须发生的叶片组织粉碎会导致水杨素和三叉树碱转化为6-羟基-2-环己烯酮(60HCH)。水杨素、三氯环己酸、6-六氯环己烷及其降解产物儿茶酚在人工饲料中对大型杨树都有毒性。这些伤害诱导的化学变化为昆虫食草性诱导杨树叶片的短期抗性提供了一个可信的机制。
Simulated large aspen tortrix (Choristoneura conflictana) herbivory of quaking aspen (Populus tremuloides) induces significant increases in concentrations of two phenol glycosides, salicortin and tremulacin, in leaves within 24 hr. Crushing of leaf tissue, as must occur when aspen leaves are eaten by chewing insects such as the large aspen tortrix, results in conversion of salicortin and tremulacin to 6-hydroxy-2-cyclohexenone (60HCH). Salicortin, tremulacin, 6-HCH, and its degradation product, catechol, are all toxic to the large aspen tortrix when fed on an artificial diet. These damage-induced chemical changes provide a plausible mechanism for short-term resistance induced in aspen leaves by insect herbivory.