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首页> 外文期刊>Journal of Economic Entomology >Host Plant Infection by Soybean Mosaic Virus Reduces the Fitness of Its Vector, Aphis glycines (Hemiptera: Aphididae)
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Host Plant Infection by Soybean Mosaic Virus Reduces the Fitness of Its Vector, Aphis glycines (Hemiptera: Aphididae)

机译：大豆马赛克病毒的宿主植物感染减少了其载体的适应性，Aphis甘氨酸（Hemiptera：Aphididae）

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摘要

Coevolutionary interactions between pathogens and their insect vectors can dramatically impact the fitness of herbivorous insects and patterns of plant disease transmission. Soybean mosaic virus (SMV) is a common disease in soybean production worldwide. Infected seed is the primary source of inoculum in fields and the virus is secondarily spread among plants by the soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), in a nonpersistent manner. In this study, we compared the biological fitness of A. glycines colonizing both SMV-infected and uninfected soybean plants. Aphids feeding on SMV-infected soybean seedlings were significantly smaller and lighter than those feeding on uninfected plants across life stages. SMV infection caused delayed development of aphid nymphs on soybean seedlings, but this was more than compensated by a reduction in the pre-reproductive period of apterous adults. The fecundity of A. glycines was reduced when feeding on SMV-infected seedlings, resulting in a lower reproductive rate, a longer generation time, and a slower population doubling time. A smaller proportion of aphid offspring developed into alatae when feeding on SMV-infected soybean seedling, and these took longer to mature than their counterparts on uninfected plants. We infer that SMV infection has significantly negative effects on the biological performance of A. glycines, which may be consistent with the long-term coevolution of SMV, soybean, and A. glycines in the transmission cycle of SMV.
机译：病原体与其媒介昆虫之间的共同进化相互作用可以极大地影响草食性昆虫的适应性和植物疾病传播的模式。大豆花叶病毒（SMV）是世界范围内大豆生产中的常见病害。受感染的种子是田间接种物的主要来源，大豆蚜虫（Aphis glycines Matsumura，半翅目：蚜科）以非持久性方式在植物间传播病毒。在这项研究中，我们比较了在SMV感染和未感染的大豆植株上定殖甘氨酸单胞菌的生物学适应性。在整个生命周期中，以SMV感染的大豆幼苗为食的蚜虫明显比以未感染的植物为食的蚜虫更小、更轻。SMV感染导致大豆幼苗上蚜虫若虫的发育延迟，但无翅成虫生殖前期的缩短弥补了这一点。以SMV感染的幼苗为食时，甘氨酸单胞菌的繁殖力降低，导致繁殖率降低，世代时间延长，种群倍增时间减慢。以SMV感染的大豆幼苗为食时，蚜虫后代发育成有翅类的比例较小，且成熟所需时间比未感染植株上的蚜虫后代长。我们推断，SMV感染对甘氨酸单胞菌的生物学性能有显著的负面影响，这可能与SMV传播周期中SMV、大豆和甘氨酸单胞菌的长期共同进化相一致。

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