Gordon R, Cornect M, Walters B M, Hall D E, Brosnan M E
J Nematol. 1989 Jan;21(1):81-6.
The polyamine and amino acid composition of the mermithid nematode, Romanomermis culicivorax, and its host, Aedes aegypti, was determined. Putrescine, spermidine, spermine, cadaverine and two acetylated spermidine derivatives were present in parasitic juveniles, newly-emerged post-parasites, and eggs of R. culicivorax. Whole insect homogenates of fourth-instar A. aegypti contained the same array of polyamines, except that the putrescine:spermidine ratio was the inverse of that in parasitic R. culicivorax. Polyamines and amino acids were in greater concentrations in the nematode eggs than in other developmental stages investigated. Both the host and nematode possess the biosynthetic capacity for polyamine biosynthesis, as evidenced by measurable activities of ornithine decarboxylase in the host's tissues and the nematode's free-living stages.
测定了索线虫目线虫——致倦罗索线虫及其宿主埃及伊蚊的多胺和氨基酸组成。腐胺、亚精胺、精胺、尸胺以及两种乙酰化亚精胺衍生物存在于致倦罗索线虫的寄生幼虫、新羽化的寄生后个体及虫卵中。埃及伊蚊四龄幼虫的全虫匀浆含有相同种类的多胺，只是腐胺与亚精胺的比例与寄生状态的致倦罗索线虫相反。线虫虫卵中的多胺和氨基酸浓度高于所研究的其他发育阶段。宿主组织和线虫自由生活阶段中鸟氨酸脱羧酶的可测活性表明，宿主和线虫都具备多胺生物合成的能力。
