Intimate roles for cyanogenic glucosides in the life cycle of Zygaena filipendulae (Lepidoptera, Zygaenidae).
Intimate roles for cyanogenic glucosides in the life cycle of Zygaena filipendulae (Lepidoptera, Zygaenidae).
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氰苷在 Zygaena filipendulae（鳞翅目、Zygaenidae）生命周期中的密切作用。
DOI：
10.1016/j.ibmb.2007.07.008
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发表时间：
2007
影响因子：
3.8
通讯作者：
B. Møller
中科院分区：
文献类型：
--
作者：
Mika Zagrobelny;S. Bak;C. Olsen;B. Møller
Zygaena幼虫从它们的食用植物(豆科)中分离生氰糖苷(CNglcs)、亚麻素和洛陶斯特林，并从新生物合成这些化合物。在Zygaenidae中，CNglcs在整个生命周期中作为防御化合物，其含量和比例受到严格调控。我们证明，在交配过程中，雄性斑潜蝇会将CNglcs的结婚礼物转移给雌性，而雌性更喜欢CNglcs含量较高的雄性进行交配。雌性想象物的平均HCN排放量是雄性的19倍，这表明栖息的雌性释放的HCN羽毛可能有助于吸引飞行的雄性。通过对细毛藻幼虫不同组织中芳樟素和洛陶雌酚的含量及比值的分析表明，种皮和血淋巴是CNglc沉积的主要部位。这些数据表明，CNglcs可能作为还原氮的储存化合物发挥额外的作用，这种化合物在最后一龄幼虫向成虫的转变过程中被动员，最有可能为几丁质的合成提供氮。至少有一种负责丝状藻CNglcs从头合成的酶位于被膜中。综上所述，CNglcs除了防御外，还在细毛藻的整个生活史中发挥着许多重要而不同的作用。
Zygaena larvae sequester the cyanogenic glucosides (CNglcs) linamarin and lotaustralin from their food plants (Fabaceae) and also de novo biosynthesize these compounds. In Zygaenidae, CNglcs serve as defence compounds during the entire life cycle, and their content and ratio are tightly regulated. We demonstrate that Z. filipendulae males transfer a nuptial gift of CNglcs to females during mating, and that females prefer males with a higher content of CNglcs for mating. Average HCN emission from female imagines is 19 times higher than from males, suggesting that plumes of HCN emitted from the perching female may serve to attract flying males. Analysis of the linamarin and lotaustralin content and ratio within different tissues in Z. filipendulae larvae shows that integument and haemolymph constitute the main sites of CNglc deposition. The data suggest that CNglcs may serve an additional role as storage compounds of reduced nitrogen that is mobilized during the transition of the last instar larva to imago, most likely to provide nitrogen for chitin synthesis. At least one of the enzymes responsible for de novo biosynthesis of CNglcs in Z. filipendulae is located in the integument. In conclusion, CNglcs play many important and different roles during the entire life cycle of Z. filipendulae in addition to defence.