Different tools for different trades: contrasts in specialized metabolite chemodiversity and phylogenetic dispersion in fruit, leaves, and roots of the neotropical shrubs Psychotria and Palicourea (Rubiaceae)
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植物产生种类繁多的特殊代谢物。理解这种化学多样性起源的关键一步是描述化学多样性如何在与植物-生物相互作用相关的空间和个体发生尺度上表现出来。本文以21种同域植物精神病科（Psychotria）和小檗科（palicourrea sensu lato）为研究对象，结合野外采集、非靶向代谢组学和生态信息学，描述了它们在空间和个体发生尺度上的特化代谢物多样性模式。我们比较了膨大叶片、未成熟果肉、未成熟种子、成熟果肉、成熟种子和细根中α、β和γ代谢物的多样性。在种内，不同个体发育阶段的果实组织α多样性大于叶片，α多样性小于叶片。各器官γ多样性最高的是果实组织和个体发育阶段，且果实组织和个体发育阶段加起来的器官特异性质谱特征发生率高于叶片。根系α多样性低于叶片，各器官中β和γ多样性最低。化学距离的系统发育相关性因植物器官和化学类别而异。我们的研究结果描述了跨器官和物种的特化代谢物多样性模式，并为植物化学多样性的器官特异性贡献提供了支持。这项研究有助于在植物进化生态学中对特化代谢物多样化的生物尺度的理解。未来的研究将我们的专门代谢物多样性数据与生物相互作用数据和实验相结合，可以检验关于生态相互作用在化学多样性进化中的作用的现有假设。
期刊介绍：
Plant Biology is an international journal of broad scope bringing together the different subdisciplines, such as physiology, molecular biology, cell biology, development, genetics, systematics, ecology, evolution, ecophysiology, plant-microbe interactions, and mycology.
Plant Biology publishes original problem-oriented full-length research papers, short research papers, and review articles. Discussion of hot topics and provocative opinion articles are published under the heading Acute Views. From a multidisciplinary perspective, Plant Biology will provide a platform for publication, information and debate, encompassing all areas which fall within the scope of plant science.
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