主要的转录基因差异是由无性和性繁殖期间在Fragaria vesca生态型中经历的更温暖的温度条件引起的
Yupeng Zhang1,2, Marcos Viejo3, Igor Yakovlev1
1Department of Molecular Plant Biology, Norwegian Institute of Bioeconomy Research, Ås, Norway.
Frontiers in plant science
|July 31, 2023
概括
植物通过表观遗传记忆适应温度上升. 这项研究表明,温度影响草 (Fragaria vesca) 基因表达在无性繁殖和性繁殖期间不同,影响表观遗传机制.
科学领域:
- 植物生物学 植物生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 适应气候变化 适应气候变化
背景情况:
- 植物面临的挑战是适应气候变化中的温度上升.
- 通过繁殖传播的表观遗传记忆可以增加表型变异并促进适应.
- 了解温度对植物繁殖和表观遗传调节的影响至关重要.
研究的目的:
- 调查性和无性繁殖期间更高的温度如何影响不同草 (Fragaria vesca) 生态型的转录组.
- 分析差异性基因表达,特别是与表观遗传机制相关的基因.
- 为了在不同温度下比较无性 (骨) 和性 (种子) 生殖之间的转录组反应.
主要方法:
- 四种欧洲Fragaria vesca生态型在18°C和28°C的温度下通过性 (种子) 和无性 (茎) 进行繁殖.
- 展开的叶子的转录组被分析,专注于表观遗传基因.
- 确定了不同的基因表达和拼接变体.
主要成果:
- 无性繁殖显示出对温度的总体转录体反应,而性繁殖则产生了不那么显著的反应.
- 在无性繁殖的植物中发现了显著更差异化呈现的拼接事件变体.
- 在无性繁殖过程中,表观遗传机制中的基因在28°C上调,但在性繁殖后下调.
- 生态型之间共享的基因差异性表达很少,突出显示了遗传和表观遗传的多样性.
结论:
- 在Fragaria vesca的性繁殖和无性繁殖之间,温度诱导的转录组变化有所不同.
- 无性繁殖可能会促进对温度变化的表观遗传反应更快.
- 生态型特有的遗传和表观遗传差异在适应温度方面发挥着重要作用.
- 表观遗传机器是不同的温度调节,这取决于繁殖的模式.
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