暴露于热应激导致在豆中引人注目的克隆特异的形变形
Hawa Jahan1,2, Mouhammad Shadi Khudr1, Ali Arafeh3
1Faculty of Biology, Medicine and Health, Division of Evolution, Infection and Genomics, School of Biological Sciences, Manchester Academic Health Science Centre, The University of Manchester, Manchester, United Kingdom.
PloS one
|October 26, 2023
概括
热浪会导致豆 (Acyrthosiphon pisum) 后代的发育异常,包括死胎和形. 母亲的基因表达差异和代谢变化表明,在热应激下,母亲和后代的生存之间存在权衡.
科学领域:
- 昆虫学 昆虫学是一门学科.
- 昆虫生理学 昆虫生理学
- 气候变化生物学 气候变化生物学
背景情况:
- 昆虫面临着气候变化带来的重大挑战,特别是热浪,影响繁殖和新陈代谢.
- 虽然热应激反应是已知的,但热诱导的养昆虫的发育异常仍未得到充分研究.
研究的目的:
- 为了研究亚致命热浪对豆,Acyrthosiphon pisum的繁殖策略和后代发展的影响.
- 探索克隆特异性热应激反应的差异,包括基因表达和代谢变化.
主要方法:
- 两个克隆的豆 (Acyrthosiphon pisum) 的第一阶段的灵是在豆 (Vicia faba) 上养的.
- 被暴露在致命的热浪 (27°C) 中14天,并监测它们的生殖产量和后代的发育.
- 热冲击蛋白 (HSP70和HSP83) 基因和代谢特征 (脂质) 的表达水平在母虫中进行了分析.
主要成果:
- 孕产妇的虫在很大程度上幸存于暴露在热中,但它们的后代表现出异常,如死产,无附属体或有缺陷的.
- 与克隆N127相比,克隆N116产生了更多的死亡和无附属体的胚胎,克隆N127有更多的发育不良的早产胚胎.
- 在克隆之间观察到HSP70和HSP83基因的差异表达和脂质代谢的改变,以应对热应激.
结论:
- 热应激可以诱导 pea aphid 后代显著的发育异常,可能是由于直接的热损伤和差异性的 HSP 基因表达.
- 观察到的生殖结果表明,母亲和后代的健康之间存在冲突,可能导致生殖利他主义,以确保一些基因相同的女儿的生存.
- 这些发现突出了豆虫对热浪的复杂反应,强调了需要在多样化的血统和物种中进行进一步研究的必要性.
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