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热应激记忆增强了迁徙昆虫害虫对全球变暖的适应

Peng-Qi Quan¹, Pan-Long Guo¹, Jing He¹

¹Department of Entomology, Nanjing Agricultural University, Nanjing, China.

Molecular ecology

|August 12, 2024

概括

在叶文件中的热度适应显示了跨代记忆效应,增强了昆虫害虫在全球气温上升的情况下的生存能力. 这涉及DNA甲基化和增加抗氧化酶活性.

科学领域:

环境科学环境科学
昆虫学昆虫学是一门学科.
遗传学是一个遗传学.

背景情况:

全球气温上升给昆虫害虫的生存带来了挑战.
米叶 (Cnaphalocrocis medinalis) 显示出意想不到的热度适应能力.
生物体适应热应激的机制尚未完全理解.

研究的目的:

为了研究C. medinalis.的跨代热适应效应.
阐明热应激记忆背后的分子机制.
评估热度适应对昆虫健康和生存的影响.

主要方法:

使用了一种适应热量的菌株 (HA39) 和一种不适应热量的菌株 (HA27) C. medinalis.
研究了跨世代的跨世代效应,并对不同热量暴露进行了研究.
测量了生理 (超氧化物脱酶活性) 和分子 (基因表达,DNA甲基化) 变化.

主要成果:

热度适应在子中产生了跨代的健身益处,持续短时间.
这种效应与增加的超氧化脱酶 (SOD) 活性和氧化脱酶基因表达有关.
在热适应幼虫中,DNA甲基化升高在恢复世代下降,甲基酶和甲基转移酶基因活性发生变化.

结论:

在C. medinalis中,热度适应会诱导一个跨代热应激记忆.
基因甲基化在调解这种记忆和影响应激反应基因方面发挥着关键作用.
这种热应激记忆增强了这种迁移性害虫对气候变化的适应能力.

关键词:

这种形形 (Cnaphalocrocis medinalis) 是一个形形形.通过DNA甲基化.热度适应热度适应热度适应氧化减氧剂可以减氧.压力记忆压力记忆跨代效应的影响.

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