Gianoli Ernesto, Niemeyer Hermann M
Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile.
Oecologia. 1996 Sep;107(4):549-552. doi: 10.1007/BF00333947.
The effects of temperature and photoperiod on the ability of wheat (Triticum aestivum L.) seedlings to show induced responses (increased accumulation of hydroxamic acids, Hx) upon infestation by the bird cherry-oat aphid, Rhopalosiphum padi L. were evaluated under laboratory conditions. Induction of Hx was significantly higher at lower temperatures. No such clear trend was found for the photoperiod effect. The significant effect of environmental conditions on growth rate of seedlings and the significant negative correlation between growth rate prior to infestation and induction of Hx suggested that environmental effects on induced responses were at least partially mediated through their effect on plant growth rate. After statistically uncoupling the effect of environmental conditions from the effect of plant growth rate, the effect of temperature on induction of Hx was no longer significant. Therefore, the temperature effect was mediated by plant growth rate.
在实验室条件下，评估了温度和光周期对小麦（Triticum aestivum L.）幼苗在受到鸟樱桃燕麦蚜（Rhopalosiphum padi L.）侵害时表现出诱导反应（异羟肟酸积累增加，Hx）能力的影响。较低温度下Hx的诱导显著更高。未发现光周期效应有如此明显的趋势。环境条件对幼苗生长速率的显著影响以及侵染前生长速率与Hx诱导之间的显著负相关表明，环境对诱导反应的影响至少部分是通过其对植物生长速率的影响来介导的。在将环境条件的影响与植物生长速率的影响进行统计学解耦后，温度对Hx诱导的影响不再显著。因此，温度效应是由植物生长速率介导的。
