番茄类的成熟水果挥发性物质的变化:一种进化框架,用于研究作物野生相对的水果香味多样性
Jacob R Barnett1, Denise M Tieman2, Ana L Caicedo3
1Graduate Program in Organismic and Evolutionary Biology, University of Massachusetts Amherst, MA, 01003, USA.
American journal of botany
|August 8, 2023
概括
野生番茄物种具有独特的水果气味 (挥发性有机化合物),可以向动物发出营养含量信号. 水果颜色的进化与香味化合物的变化有关,为番茄风味和作物改进提供了洞察力.
科学领域:
- 植物生物学 植物生物学
- 进化生物学是进化的生物学.
- 化学生态化学生态学
背景情况:
- 挥发性有机化合物 (VOC) 对于水果对种子分散剂的吸引力至关重要.
- 了解野生亲属的气味变异是识别水果多样性的进化驱动因素的关键.
- 气味可以作为水果营养含量的诚实信号.
研究的目的:
- 为了研究番茄类 (Solanum部门) 的成熟水果VOCs的遗传学模式. 莱科佩尔西康 (Lycopersicon) 是一种药物.
- 探索水果香味多样性的进化基础及其与水果颜色和营养信号的关系.
- 通过了解其野生亲属,为改善番茄味道提供见解.
主要方法:
- 对13种在公共花园中种植的野生西红品种的成熟水果挥发性物质的分析.
- 评估66种挥发性有机化合物及其生物合成途径在32个加入国的跨种类变异.
- 构建一个加入级别的族系来解释进化相关性.
主要成果:
- 在野生番茄物种中确定了明显的VOC档案,其中Solanum pennellii显著不同.
- 在VOC档案中观察到有限的遗传学保守主义.
- 挥发性有机化合物,特别是含的化合物和的显著差异,与水果颜色相关 (有色与绿色果实物种).
结论:
- 番茄类中的每个物种都具有独特的VOC概况,为水果香味进化研究建立了框架.
- 彩色和绿色果实物种之间的气味组成的差异表明它们适应了特定的果食者相互作用 (果实综合征).
- 番茄中彩色水果的进化与关键风味挥发物如和含化合物的生物合成发生变化有关.
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