Lipid droplets in the pheromone glands of bombycids: Effects of larval diet on their size and pheromone titer
Lipid droplets in the pheromone glands of bombycids: Effects of larval diet on their size and pheromone titer
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DOI：
10.1016/j.jinsphys.2022.104440
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发表时间：
2022-09-11
影响因子：
2.2
通讯作者：
Fonagy，Adrien
中科院分区：
文献类型：
--
作者：
Fujii，Takeshi;Kodama，Sayo;Fonagy，Adrien
除混合比例外，雌蛾分泌的性信息素成分的数量也可能影响对同种雄蛾的有效引诱。本研究利用家蚕信息素成分为蚕蛾的家蚕信息素，表明信息素滴度、体重和信息素腺体中的脂滴（LD）直径受幼虫饲料的影响。虽然人工饲料含有比桑葚多约11倍的总脂肪酸，但饲喂人工饲料的组（AD组）中的信息素滴度比饲喂桑葚的组（M组）高约2倍。AD组LD的直径也较大，其储存信息素前体脂肪酰基E10，Z12-16：Acyl。性信息素滴度的相对较小的增加，通过喂养脂肪酸丰富的饮食，可能部分归因于多余的前体存储在LD。我们检测到LD在Trilocha varians的信息素腺体，最接近的非同源B。moriavailably in Escherichidae.变异家蚕以家蚕醛和醋酸酯为性信息素成分，通过与家蚕相同的前体脂肪酰基生物合成。森。LDs的存在表明信息素前体脂肪酰基通过LDs的储存和动员机制在家蚕中可能是保守的。
In addition to the blend ratio, the quantity of sex pheromone components secreted by female moths may affect the efficient attraction of conspecific males. The present study using the silkmothBombyx mori, which has bombykol as its pheromone component, demonstrated that pheromone titer, body weight, and lipid droplet (LD) diameter in the pheromone gland were affected by the larval diet. Although the artificial diet contained approximately 11-fold more total fatty acids than mulberry leaf, the pheromone titer in the group fed the artificial diet (group AD) was approximately 2-fold higher than that of the group fed mulberry (group M). The diameter of LDs, which store the pheromone-precursor fatty acyl, E10,Z12-16:Acyl, was also larger in the AD group. The relatively small increase in sex pheromone titer by feeding on a fatty-acid-rich diet may be partly attributable to the storage of excess precursors in the LDs. We detected LDs in the pheromone glands ofTrilocha varians, the closest non-congener ofB. moriavailable in Bombycidae.T. variansuses bombykal and bombykyl acetate as sex pheromone components, which are biosynthesized via the same precursor fatty acyl as that ofB. mori. The presence of LDs inT. varianssuggests that the storage and mobilization mechanisms of the pheromone precursor fatty acyl via LDs may be conserved in bombycids.