新热带香草专门的种子传播揭示了果实对杂食性动物的不可口性。

IF 4.2 3区 生物学 Q1 PLANT SCIENCES
Plant Biology Pub Date : 2024-10-05 DOI:10.1111/plb.13726
E. R. Pansarin
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引用次数: 0

摘要

开花植物基本上是无梗生物,它们通过授粉传播基因,并通过种子传播扩大发生区域。在兰科植物中,种子通常通过气流传播。相反,有几个属的成员进化出了适应内吸的种子。兰科植物中经济价值最高的香草属就是这种情况。通过实地观察、分析香味、奖励物质以及调查种子在消化道中的存活率,研究了不裂果在吸引和奖励香草种子传播者方面的作用。不裂香草果实只被食草动物(即姬鹟)食用。除了提供营养奖励外,果实还富含多酚,杂食动物无法品尝。果实中最主要的化合物只对香蜂有吸引力。这是首次在兰科植物中发现同株繁殖现象以及兰科植物种子传播特异性的研究。不裂果可能是在新热带香草属早期进化而来,以应对大型食草动物的选择压力,当时该属在南美洲出现的时间约为 34 Mya,与渐新世巨型动物的多样化同时出现。在更新世期间,巨型动物灭绝,使农夫木鳖科动物继承了具有大型肉质果实的物种的种子传播方式。除了对杂食性动物的影响外,本研究还表明,V. chamissonis的不裂果只被姬蜂食用,首次证明了兰花种子传播中的目标互惠关系。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Specialized seed dispersal in Neotropical Vanilla reveals fruit unpalatability to omnivores

Specialized seed dispersal in Neotropical Vanilla reveals fruit unpalatability to omnivores

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来源期刊
Plant Biology
Plant Biology 生物-植物科学
CiteScore
8.20
自引率
2.60%
发文量
109
审稿时长
3 months
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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