Body temperature changes can modify an insect’s ability to fight infections by altering its immune activity. This work evaluated the impact of mild cold and heat thermal stress on the expression of different immune and heat shock genes in the species Bombus terrestris. Additionally, a thermal treatment was repeated under starvation to analyze a possible compromise of immune gene expression in favor of a thermal stress response when energetic resources are limited. Results pointed to a role of Hsc70 and Aha1 genes in tolerance to moderately high temperatures. Expression of the immune genes was not negatively affected by the cold or the heat treatments, and the receptor gene BGRP1 was upregulated with cold, possibly indicating an increase in the cellular immune activity. Under starvation, the effect of the heat and the cold treatments caused a higher upregulation in all genes analyzed, suggesting a synergistic effect of starvation and thermal stress on the activation of heat shock and immune gene expression.

中文翻译：

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温和的热应激不会对大黄蜂 Bombus terrestris 的免疫基因表达产生负面影响

体温变化可以通过改变其免疫活动来改变昆虫抵抗感染的能力。这项工作评估了轻度冷热应激对 Bombus terrestris 物种中不同免疫和热休克基因表达的影响。此外，在饥饿状态下重复进行热处理，以分析当能量资源有限时免疫基因表达的可能妥协以支持热应激反应。结果表明 Hsc70 和 Aha1 基因在耐受中等高温中的作用。免疫基因的表达不受寒冷或热处理的负面影响，受体基因BGRP1在寒冷时上调，可能表明细胞免疫活性增加。饥饿之下，