A RAPID COLD-HARDENING PROCESS IN INSECTS
A RAPID COLD-HARDENING PROCESS IN INSECTS
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DOI：
10.1126/science.238.4832.1415
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发表时间：
1987-12-04
期刊：
影响因子：
56.9
通讯作者：
DENLINGER, DL
中科院分区：
文献类型：
--
作者：
LEE, RE;CHEN, CP;DENLINGER, DL
传统上，昆虫耐寒性的研究主要集中在与越冬相关的季节性适应上，这种适应是在暴露于低温几周或几个月后观察到的。相比之下，在非越冬阶段观察到极快的冷硬化反应，这可以防止由于高于过冷点的温度下的冷冲击而造成的伤害。这种反应在肉蝇（Sarcophaga crassipalpis）的非滞育幼虫和甲虫成虫、榆叶甲（Xanthogaleuca uteola）和马利筋虫（Oncopeltus fasciatus）的非滞育成虫中观察到。快速硬化反应与甘油的积累相关。
Traditionally studies of cold tolerance in insects have focused on seasonal adaptations related to overwintering that are observed after weeks or months of exposure to low temperature. In contrast, an extremely rapid cold-hardening response was observed in nonoverwintering stages that confers protection against injury due to cold shock at temperatures above the supercooling point. This response was observed in nondiapausing larvae and pharate adults of the flesh fly, Sarcophaga crassipalpis, nondiapausing adults of the elm leaf beetle, Xanthogaleruca luteola, and the milkweed bug, Oncopeltus fasciatus. The rapid hardening response is correlated with the accumulation of glycerol.