State Key Laboratory of Integrated Management of Pest and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100039, China.
Sci Rep. 2018 Jul 2;8(1):9964. doi: 10.1038/s41598-018-28020-w.
Elevated CO and O can affect aphid performance via altering plant nutrients, however, little is known about the role of plant secondary metabolites in this process, especially for aphids feeding behaviors. We determined the effects of elevated CO and O on the growth and phenolics of alfalfa (Medicago sativa) and feeding behaviors of the pea aphids (Acyrthosiphon pisum) and cowpea aphids (Aphis craccivora). Elevated CO improved plant growth, but could not completely offset the negative effects of elevated O. Elevated O increased foliar genistin content at the vegetative stage, increased ferulic acid at the reproductive stage, and elevated CO increased those at both stages. Simultaneously elevated CO and O increased foliar ferulic acid content at the reproductive stage and increased genistin content at both stages. For pea aphids, feeding efficiency was reduced under elevated CO at the reproductive stage and decreased under elevated O at the vegetative stage. For cowpea aphids, feeding efficiency was increased under elevated CO at the vegetative stage and decreased under elevated O at both stages. Simultaneously elevated CO and O decreased both aphids feeding efficiency. We concluded that CO and O independently or interactively had different effects on two aphids feeding behaviors through altering foliar ferulic acid and genistin contents.
升高的 CO 和 O 可以通过改变植物养分来影响蚜虫的表现，但对于植物次生代谢物在这个过程中的作用，尤其是对于蚜虫的取食行为，知之甚少。我们确定了升高的 CO 和 O 对紫花苜蓿（Medicago sativa）生长和酚类物质的影响，以及豌豆蚜（Acyrthosiphon pisum）和豇豆蚜（Aphis craccivora）的取食行为。升高的 CO 促进了植物的生长，但不能完全抵消升高的 O 的负面影响。升高的 O 在营养生长阶段增加了叶中叶黄素的含量，在生殖生长阶段增加了阿魏酸的含量，而升高的 CO 则增加了这两个阶段的含量。同时升高的 CO 和 O 在生殖生长阶段增加了叶中叶黄素的含量，在两个阶段增加了叶中叶黄素的含量。对于豌豆蚜，在生殖生长阶段升高的 CO 下取食效率降低，在营养生长阶段升高的 O 下取食效率降低。对于豇豆蚜，在营养生长阶段升高的 CO 下取食效率增加，在两个阶段升高的 O 下取食效率降低。同时升高的 CO 和 O 降低了两种蚜虫的取食效率。我们得出结论，CO 和 O 通过改变叶中叶黄素和叶黄烷醇的含量，独立或相互作用对两种蚜虫的取食行为产生不同的影响。
