Global geographic patterns of heterospecific pollen receipt help uncover potential ecological and evolutionary impacts across plant communities worldwide
Global geographic patterns of heterospecific pollen receipt help uncover potential ecological and evolutionary impacts across plant communities worldwide
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DOI：
10.1038/s41598-019-44626-0
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发表时间：
2019-05-30
影响因子：
4.6
通讯作者：
Parra-Tabla, Victor
中科院分区：
文献类型：
--
作者：
Arceo-Gomez, Gerardo;Schroeder, Amelia;Parra-Tabla, Victor
众所周知，物种间的相互作用是驱动全球生物多样性模式的关键。植物与植物之间通过异种花粉（HP）传递的相互作用是常见的，对植物的繁殖成功和花的进化有影响，因此有可能影响全球生物多样性和植物群落组合的模式。关于HP转移的文献越来越多，因此在全球范围内回顾HP接收的物种间变化的模式和原因是及时的，从而揭示其对全球生物多样性格局的潜在贡献。本文分析了分布在五大洲的245种植物的数据，以评估HP接收的纬向和纬向格局。进一步分析了花的对称性和进化历史在HP接收过程中的作用。纬度和海拔影响HP接收的可能性和强度，表明HP在物种丰富的群落和脊椎动物传粉媒介丰富的地区转移增加。花的对称性和进化历史决定了全球植物群落的HP负荷大小。总体而言，我们的研究结果表明，HP接收可能通过在全球物种丰富的地区施加强大的选择压力，对全球植物多样性的地理格局做出贡献。
Species interactions are known to be key in driving patterns of biodiversity across the globe. Plant-plant interactions through heterospecific pollen (HP) transfer by their shared pollinators is common and has consequences for plant reproductive success and floral evolution, and thus has the potential to influence global patterns of biodiversity and plant community assembly. The literature on HP transfer is growing and it is therefore timely to review patterns and causes of among-species variation in HP receipt at a global scale, thus uncovering its potential contribution to global patterns of biodiversity. Here we analyzed published data on 245 species distributed across five continents to evaluate latitudinal and altitudinal patterns of HP receipt. We further analyzed the role of floral symmetry and evolutionary history in mediating patterns of HP receipt. Latitude and elevation affected the likelihood and intensity of HP receipt indicating that HP transfer increases in species-rich communities and in areas with high abundance of vertebrate pollinators. Floral symmetry and evolutionary history determined HP load size across plant communities worldwide. Overall, our results suggest that HP receipt may have the potential to contribute to global geographic patterns of plant diversity by imposing strong selective pressures in species-rich areas across the globe.