A new rain-operated seed dispersal mechanism in Bertolonia mosenii (Melastomataceae), a Neotropical rainforest herb.
A new rain-operated seed dispersal mechanism in Bertolonia mosenii (Melastomataceae), a Neotropical rainforest herb.
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新热带雨林草本植物 Bertolonia mosenii（野牡丹科）中的一种新的雨水驱动种子传播机制。
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
L. Morellato
中科院分区：
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作者：
M. A. Pizo;L. Morellato
虽然广泛存在于真菌、地衣、地钱和苔藓中，但由雨水操作的种子传播机制在开花植物中是不寻常的。一般来说，雨水传播种子的机制有两种：溅杯和跳板。在这里，我们描述了一个新的种子传播机制，由雨在新热带雨林草本植物Bertolonia mosenii Cogniaux（Mexicataceae）。这项研究是在巴西东南部的低地大西洋雨林进行的。我们的实验证明，雨水是必要的，通过我们所谓的“喷角”种子传播机制从胶囊释放种子：当雨滴击中成熟的水果，水滴迫使种子向外的角度（角）的三角形胶囊和种子被释放。据我们所知，喷射角代表了一种新的雨控种子传播机制，也是新热带森林植物种子传播的一种新模式。
Although widespread among fungi, lichens, liverworts, and mosses, seed dispersal mechanisms operated by rain are unusual among flowering plants. Generally speaking, two mechanisms are involved in seed dispersal by rains: the splash-cup and the springboard. Here we describe a new seed dispersal mechanism operated by rain in a Neotropical rainforest herb Bertolonia mosenii Cogniaux (Melastomataceae). The study was carried out at the lowland Atlantic rainforest, southeastern Brazil. We experimentally demonstrate that rain is necessary to release the seeds from the capsules through what we call "squirt-corner" seed dispersal mechanism: when a raindrop strikes the mature fruit, the water droplet forces the seeds outward to the angles (corners) of the triangular capsule and the seeds are released. As far as we know squirt-corner represents a new rain-operated seed dispersal mechanism, and a novel seed dispersal mode both for Melastomataceae and for flowering plants from Neotropical forests.