Heat-stress memory enhances acclimation of a migratory insect pest to global warming

In the face of rising global temperatures, the mechanisms behind an organism's ability to acclimate to heat stress remain enigmatic. The rice leaf folder, Cnaphalocrocis medinalis, traditionally viewed as temperature-sensitive, paradoxically exhibits robust larval acclimation to heat stress. This study used the heat-acclimated strain HA39, developed through multigenerational exposure to 39°C during the larval stage, and the unacclimated strain HA27 reared at 27°C to unravel the transgenerational effects of heat acclimation and its regulatory mechanisms. Heat acclimation for larvae incurred a fitness cost in pupae when exposed to high temperature, yet a significant transgenerational effect surfaced, revealing heightened fitness benefit in pupae from HA39, even without additional heat exposure during larval recovery at 27°C. This transgenerational effect exhibited a short-term memory, diminishing after two recovery generations. Moreover, the effect correlated with increased superoxide dis..., , , # Heat-stress memory enhances acclimation of a migratory insect pest to global warming - DATA ## Description of the data and file structure 6 datasets are present in this release related to the six main analyses of the manuscript. The columns description can be found in the analyses scripts. In short: lxd1-1.csv: experimental data on survival rate of pupae exposured to different temperatures. $ Exposed temperature: (num) Exposed temperature $ Replicate: (num) No of the replicate for the experiment $ Strain: (Chr) Strain of HA27 and HA39 $ Eclosion rate of pupae: (num) Eclosion rate of pupae -lxd1-2.csv: experimental data on longevity of adult. $ Exposed temperature: (num) Exposed temperature $ Replicate: (num) No of the replicate for the experiment $ Strain: (Chr) Strain of HA27 and HA39 $ Longevity: (num) Longevity of adult -lxd1-3.csv: experimental data on fecundity of female. $ Exposed temperature: (num) Exposed temperature $ Replicate: (num) No of the replicate for the experim...面对全球气温持续攀升，生物体适应热胁迫的内在机制仍有待阐明。稻纵卷叶螟（Cnaphalocrocis medinalis）传统上被视为温度敏感型物种，却反常地展现出极强的幼虫热胁迫驯化能力。本研究选用通过幼虫阶段多代暴露于39℃环境选育获得的热驯化品系HA39，以及在27℃条件下饲养的未驯化品系HA27，以解析热驯化的跨代效应及其调控机制。研究发现，幼虫阶段的热驯化在蛹期遭受高温胁迫时会产生适合度代价，但同时存在显著的跨代效应：即便在27℃下经过幼虫恢复阶段、未额外经受热胁迫的HA39品系后代，其蛹期的适合度收益仍显著提升。这种跨代效应呈现短期记忆特性，在经过两代恢复繁殖后便会逐渐减弱。此外，该效应与超氧化物歧化酶活性提升相关（原文此处截断为superoxide dis..., ）。# 热胁迫记忆提升迁飞性害虫对全球变暖的适应性 - 数据集 本版本共包含6个数据集，对应论文中的6项核心分析，各数据集的字段说明可在分析脚本中查阅。简要说明如下： 1. lxd1-1.csv：蛹存活率实验数据集 - 暴露温度（num）：实验施加的暴露温度 - 重复次数（num）：实验重复的序号 - 品系（Chr）：实验所用品系，包括HA27与HA39 - 蛹羽化率（num）：蛹的羽化比率 2. lxd1-2.csv：成虫寿命实验数据集 - 暴露温度（num）：实验施加的暴露温度 - 重复次数（num）：实验重复的序号 - 品系（Chr）：实验所用品系，包括HA27与HA39 - 成虫寿命（num）：成虫的存活时长 3. lxd1-3.csv：雌性成虫繁殖力实验数据集 - 暴露温度（num）：实验施加的暴露温度 - 重复次数（num）：实验重复的序号 - 品系（Chr）：实验所用品系（原文此处截断）