Extrafloral nectaries and chemical signals of Fallopia japonica and Fallopia sachalinensis (Polygonaceae), and their roles as defense systems against insect herbivory
Extrafloral nectaries and chemical signals of Fallopia japonica and Fallopia sachalinensis (Polygonaceae), and their roles as defense systems against insect herbivory
复制标题
Fallopia japonica 和 Fallopia sachalinensis（蓼科）的花外蜜腺和化学信号，及其作为昆虫食草防御系统的作用
DOI：
10.1046/j.1442-1984.1999.00010.x
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发表时间：
1999
影响因子：
1.4
通讯作者：
Kunio Suzuki
中科院分区：
文献类型：
--
作者：
S. Kawano;H. Azuma;M. Ito;Kunio Suzuki
对两种黄秋花（Fallopia japonica）和黄秋花（Fallopia sachalinensis）叶柄基部和茎节周围形成的花外蜜腺进行了解剖、扫描电镜（SEM）观察，并对花蜜的含糖量进行了分析。采集鉴定了花外蜜腺吸引的蚂蚁和其他昆虫种类，并对食草昆虫进行了观察、采集和鉴定。对昆虫捕食后的叶片挥发性物质进行化学测定，草食诱导的叶片挥发性物质(E)-4,8-二甲基-1,3,7-非三烯，作为一种一般的引诱剂，在叶片受损后4-6 h释放。根据本研究的证据，讨论了两种黄秋叶属植物与昆虫之间复杂的相互作用，并评价了花外蜜腺与化学信号结合在食草昆虫防御中的作用。
Extrafloral nectaries formed at the petiole base and periphery of stem nodes of two Fallopia species, Fallopia japonica (= Polygonum cuspidatum) and Fallopia sachalinensis (= Polygonum sachalinense), were examined anatomically, scanning electron microscopy (SEM) observations were made, and the sugar contents of the nectar were analyzed. Ants and other insect species attracted to the extrafloral nectaries were collected and identified, and insect herbivores were observed, collected and identified. Volatile substances were emitted from damaged leaves after insect predation was chemically determined, and a herbivore-induced leaf volatile, (E)-4,8-dimethyl-1,3,7-nonatriene, as a general parasitoid attractant, was emitted 4–6 h after leaf damage. Complex plant–insect interactions in two Fallopia species are discussed in light of the evidence obtained in the present study, and the roles of extrafloral nectaries in combination with chemical signals for defense of insect herbivory are evaluated.