Facultative 'secondary' bacterial symbionts and the nutrition of the pea aphid, Acyrthosiphon pisum
Facultative 'secondary' bacterial symbionts and the nutrition of the pea aphid, Acyrthosiphon pisum
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DOI：
10.1111/j.1365-3032.2006.00516.x
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发表时间：
2006-09-01
影响因子：
1.5
通讯作者：
Minto, L. B.
中科院分区：
文献类型：
--
作者：
Douglas, A. E.;Francois, C. L. M. J.;Minto, L. B.
兼性“次级”细菌共生体影响蚜虫的各种性状，包括植物利用模式和对寄生蜂的抗性。本研究旨在检验以下假设：这些多重效应是由共生体介导的蚜虫对主要膳食营养素、蔗糖和氨基酸需求的变化所引起的。豌豆蚜 (Acyrthosiphon pisum) 在系统地改变蔗糖和氨基酸含量的化学限定日粮中的表现在八个孤雌生殖克隆中有所不同，其模式与次生共生体、防御汉密尔顿菌、昆虫雷吉菌和共生沙雷氏菌的蚜虫互补体不匹配。消除共生链霉菌、昆虫立克次体和防御蚜虫分别会降低、增加和不影响蚜虫的表现，但对蚜虫表现良好的饮食范围没有显着影响。结论是，次生共生体对蚜虫性状的影响不太可能有纯粹的营养基础。
Facultative 'secondary' bacterial symbionts influence various traits of aphids, including plant utilization patterns and resistance to parasitoids. The present study is designed to test the hypothesis that these multiple effects are underlain by symbiont-mediated changes to the aphid requirement for the dominant dietary nutrients, sucrose and amino acids. The performance of pea aphids (Acyrthosiphon pisum) on chemically defined diets of systematically altered sucrose and amino acid content varies among eight parthenogenetic clones, with a pattern that does not match the aphid complements of secondary symbionts, Hamiltonella defensa, Regiella insecticola and Serratia symbiotica. Aphid performance is reduced, increased and unaffected by elimination of S. symbiotica, R. insecticola and H. defensa, respectively, but with no significant effect on the range of diets on which aphids performed well. It is concluded that the impact of secondary symbionts on aphid traits is most unlikely to have a purely nutritional basis.