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蛋白质组分析揭示了嗅觉和花粉觅食偏好之间在蜜蜂中的强相关性。

Proteome analysis reveals a strong correlation between olfaction and pollen foraging preference in honeybees.

机构信息

Institute of Horticulture, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, China.

Institute of Horticulture, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, China.

出版信息

Int J Biol Macromol. 2019 Jan;121:1264-1275. doi: 10.1016/j.ijbiomac.2018.10.140. Epub 2018 Oct 20.

Abstract

To gain a deeper understanding of the molecular basis of pollen foraging preference, we characterized the proteomes of antennae and brains of bees foraging on pear and rapeseed flowers, and the volatile compounds from nectar, anther, and inflorescence of both plants. Bees foraging on the pollen of the two plants have shaped the distinct proteome arsenals in the antenna and brain to drive olfactory and brain function. In antennae, bees foraging on pear (PA) pollen pathways associated with protein metabolism were induced to synthesize new proteins for modulation of synaptic structures via stabilizing and consolidating specific memory traces. Whereas, bees foraging on rapeseed (BA) pollen pathways implicated in energy metabolism were activated to provide metabolic fuels critical for neural activity. These findings suggest that the distinct biochemical route is functionally enhanced to consolidate the divergent olfaction in PA and BA. In brain, although the uniquely induced pathways in bees forging on both plants are likely to cement selective roles in learning and memory, pollen foraging preference in bees is mainly drived by olfaction. Furthermore, both plants have shaped different repertoires of signal odors and food rewards to attract pollinators. The suggested markers are potentially useful for selection of bees to improve their olfaction for better pollination of the plants.

摘要

为了更深入地了解花粉觅食偏好的分子基础,我们对采集梨花和油菜花的蜜蜂的触角和大脑的蛋白质组以及这两种植物花蜜、花药和花序的挥发性化合物进行了分析。采集这两种植物花粉的蜜蜂塑造了其触角和大脑中独特的蛋白质组,以驱动嗅觉和大脑功能。在触角中,采集梨花(PA)花粉的蜜蜂与蛋白质代谢相关的途径被诱导合成新的蛋白质,通过稳定和巩固特定的记忆痕迹来调节突触结构。而采集油菜花(BA)花粉的蜜蜂,与能量代谢相关的途径被激活,为神经活动提供关键的代谢燃料。这些发现表明,不同的生化途径在功能上得到了增强,以巩固在 PA 和 BA 中不同的嗅觉。在大脑中,尽管在采集这两种植物的蜜蜂中诱导的独特途径可能在学习和记忆中发挥特定作用,但蜜蜂对花粉的觅食偏好主要受嗅觉驱动。此外,这两种植物塑造了不同的信号气味和食物奖励组合,以吸引传粉者。这些标记物可能有助于选择蜜蜂,以提高它们的嗅觉,从而更好地为植物授粉。

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