Hardie Jim, Leckstein Peter
Imperial College London, Faculty of Natural Sciences, Division of Biology, Silwood Park campus, Ascot, Berks SL5 7PY, UK.
Insect Biochem Mol Biol. 2007 Aug;37(8):886-90. doi: 10.1016/j.ibmb.2007.05.005. Epub 2007 May 17.
The possible role of the primary Buchnera symbionts in wing polyphenism is examined in three aphid species. Presumptive winged aphids were fed on antibiotic-treated beans to destroy these symbionts. As previously reported, this leads to inhibited growth and low/zero fecundity. When such treatment is applied to the short-day-induced gynoparae (the winged autumn migrant) of the black bean aphid, Aphis fabae, it also causes many insects to develop as wingless or winged/wingless intermediate adult forms (apterisation). However, whilst antibiotic treatment of crowd-induced, long-day winged forms of the pea aphid, Acyrthosiphon pisum (a green and a pink clone) and the vetch aphid, Megoura viciae has similar effects on size and fecundity, it does not affect wing development. Food deprivation also promotes apterisation in A. fabae gynoparae but not in the crowd-induced winged morphs of the other two species. Thus, it appears that apterisation in A. fabae is not a direct effect of antibiotic treatment or a novel role for symbionts but is most likely related to impaired nutrition induced by the loss of the symbiont population.
在三种蚜虫物种中研究了主要布赫纳氏共生菌在翅多型现象中可能发挥的作用。将假定的有翅蚜虫用抗生素处理过的豆子喂养，以破坏这些共生菌。如先前报道的那样，这会导致生长受抑制以及繁殖力低/为零。当对黑豆蚜（豆蚜）短日照诱导产生的雌性蚜（有翅的秋季迁飞蚜）进行这种处理时，也会使许多昆虫发育为无翅或有翅/无翅的中间成虫形态（翅化异常）。然而，虽然用抗生素处理豌豆蚜（豌豆蚜有绿色和粉色克隆品系）和巢菜蚜在群体诱导的长日照有翅形态时，对其大小和繁殖力有类似影响，但并不影响翅的发育。饥饿也会促使豆蚜雌性蚜翅化异常，但不会促使其他两个物种群体诱导的有翅形态翅化异常。因此，似乎豆蚜的翅化异常不是抗生素处理的直接作用，也不是共生菌的新作用，而极有可能与共生菌群体丧失所导致的营养受损有关。
