Soil moisture affects plant-pollinator interactions in an annual flowering plant
Soil moisture affects plant-pollinator interactions in an annual flowering plant
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土壤湿度影响一年生开花植物中植物与传粉者的相互作用
DOI：
10.1098/rstb.2021.0423
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发表时间：
2022-06-20
影响因子：
6.3
通讯作者：
Mu, Junpeng
中科院分区：
文献类型：
--
作者：
Dai, Wenfei;Yang, Yulian;Mu, Junpeng
许多环境因素影响植物和传粉者群落。然而，土壤水分的变化以及它如何介导植物-传粉者的相互作用尚未阐明。我们假设，土壤水分的长期变化可以对植物的花和营养性状施加强大的选择压力，导致传粉者访问的变化。结果表明，青藏高原高寒地区存在三个不同花色和其他性状的龙胆表型居群。粉红色（干燥的栖息地）和蓝色（中间栖息地）的花种群主要由熊蜂访问，而白色（潮湿的栖息地）的花种群则由苍蝇访问。这些模式的访问是由植物和花卉的特点，是恒定的，当非地方性植物被放置在中间的栖息地。此外，不同生境中的植物群落也存在差异，干旱和中等生境中的昆虫授粉杂类草比湿润生境中的多。通过一个共同的花园和相互移植实验，我们证明了植物的生长性状，传粉者的吸引力和种子产量是最高的植物种群在其特有的栖息地。这表明这些植物种群已经进化为与栖息地差异相关的传粉者群落。本文是主题“影响传粉者健康的自然过程：从化学到生物学”的一部分。
Many environmental factors impact plant and pollinator communities. However, variation in soil moisture and how it mediates the plant-pollinator interactions has yet to be elucidated. We hypothesized that long-term variation in soil moisture can exert a strong selective pressure on the floral and vegetative traits of plants, leading to changes in pollinator visitation. We demonstrated that there are three phenotypic populations of Gentiana aristata in our study alpine region in the Qinghai-Tibetan Plateau that vary in floral colour and other traits. Pink (dry habitat) and blue (intermediate habitat) flower populations are visited primarily by bumblebees, and white (wet habitat) flower populations are visited by flies. These patterns of visitation are driven by vegetative and floral traits and are constant when non-endemic plants are placed in the intermediate habitats. Additionally, the floral communities in different habitats vary, with more insect-pollinated forbs in the dry and intermediate habitats versus the wet habitats. Through a common garden and reciprocal transplant experiment, we demonstrated that plant growth traits, pollinator attractiveness and seed production are highest when the plant population is raised in its endemic habitat. This suggests that these plant populations have evolved to pollinator communities associated with habitat differences.This article is part of the theme issue 'Natural processes influencing pollinator health: from chemistry to landscapes'.