花花转录组的发育和时间变化显示了植物特异的RING-kinase-WD40蛋白抑制气味
Ekaterina Shor1, Oded Skaliter1, Elad Sharon1,2
1The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel.
Frontiers in plant science
|June 26, 2023
概括
花的花香产量由PhWD2蛋白调节,它起到负调节者的作用. 抑制PhWD2增加了挥发性化合物,影响了蝶授粉动态.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 在被授粉的花中,花香的产生是一个节奏的过程,对于授粉者相互作用至关重要.
- 了解与气味发育和白天时间相关的转录组变化对于植物科学至关重要.
研究的目的:
- 描述花花的日间时间的发育转录基因反应.
- 确定参与植物挥发性有机化合物生物合成的关键调节因素.
主要方法:
- 进行RNA测序 (RNA-Seq) 测试,测试花在不同发育阶段 (芽 vs. 1天后) 和不同时间 (早上 vs. 晚上).
- 进行了差异基因表达分析,以确定受花朵发育和白天时间影响的转录.
- 用基因本体学和途径分析来识别参与挥发性有机化合物生物合成的基因.
- 功能分析涉及抑制已识别的候选基因PhWD2,以评估其对花香产生的影响.
主要成果:
- 大约70%的花转录在花朵发育过程中显示出显著的变化,从芽到1天后修复.
- 44%的花转录在早上和晚上之间表达不同,在成熟的花朵中反应更大.
- 与挥发性有机化合物生物合成相关的基因在成熟的花朵中比在芽中高调.
- 抑制PhWD2 (UPPER) 导致花挥发物水平显著增加,表明其作为负调节者的作用.
结论:
- 花的发育和一天中的时间显著影响了花转录组,特别是在成熟的花中.
- PhWD2是花花香气产生的新型负调节剂,影响挥发性有机化合物水平.
- 了解PhWD2的作用,可以了解花香的遗传控制及其在授粉过程中的生态意义.
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