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花粉中的高毒素度可能会阻止蜜蜂在蝶授粉的罗多龙中收集花粉

Hui-Hui Feng^1,2, Xiao-Wen Lv¹, Xiao-Chen Yang³

¹Institute of Evolution and Ecology, School of Life Sciences, Central China Normal University, Wuhan 430079, China.

Annals of botany

|March 20, 2024

概括

植物花粉可以用诸如rhodojaponin III之类的毒素进行化学防护,以阻止受粉虫的消费. 这种毒性阻止了花粉掠夺者,而花蜜奖励了有效的授粉者,促进了植物的繁殖.

科学领域:

植物生物学植物生物学
化学生态化学生态学
进化生物学是进化的生物学.

背景情况:

植物进化了对游客对花粉消费的保护特征的假设尚未得到充分理解.
可访问的花粉可能容易受到花客的消费的影响.

研究的目的:

为了研究罗多的花粉消耗的化学防御机制.
探索罗多邦尼III毒性在花粉防御中的作用.

主要方法:

检查了Rhododendron molle中的授粉者组合,食行为和花粉转移效率.
在花粉,花和叶子中测量了营养和有毒成分.
在不同的植物组织和花蜜中分析了罗多雅邦尼III度.

主要成果:

蝶和大熊蜂比蜜蜂更频繁地访问花朵,主要是寻找花蜜,而不是花粉.
Rhododendron的柔软花粉含有高度的有毒化合物rhodojaponin III比花和叶子.
在花蜜中无法检测Rhodojaponin III,而水果/种子生产仅限于花粉.

结论:

Rhododendron中的花粉毒性可能会阻止花粉掠夺者 (蜜蜂) 消耗可访问的花粉.
无毒素的花蜜可能会奖励有效的授粉者,促进花粉转移.
花粉中的化学防御可能会在缺乏对食花粉动物的物理保护的物种中演变.

关键词:

罗多德朗的形.蜜蜂的食行为蝶授粉蝶授粉是一种化学防御的化学防御暴露的花粉呈现方式罗多日尼尼三号的使用有毒的花粉是有毒的花粉.

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