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Sci Rep:中科院昆明植物所张石宝研究组发表植物气味的多重生态功能研究进展

摘要 : 2016年6月9日,国际学术权威刊物自然出版集团旗下子刊《Scientific Reports》杂志在线发表了中科院昆明植物所张石宝研究组题为Multiple functions of volatiles in flowers and leaves of Elsholtzia rugulosa(Lamiaceae) from southwestern China的研究论文

 2016年6月9日,国际学术权威刊物自然出版集团旗下子刊《Scientific Reports》杂志在线发表了中科院昆明植物所张石宝研究组题为Multiple functions of volatiles in flowers and leaves of Elsholtzia rugulosa(Lamiaceae) from southwestern China的研究论文,研究在植物气味的多重生态功能研究中取得新进展。

植物为了完成自身的繁殖,通常会通过多种方式来吸引昆虫为其传份,其中植物产生的化学气味作为通讯信号在植物与昆虫间起到了非常重要的桥梁与纽带作用。因此,揭示植物气味和昆虫间的相互作用对认识植物的繁殖策略具有重要意义。

最近,中国科学院昆明植物研究所张石宝研究组在野拔子(Elsholtzia rugulosa)植物的气味及其生态功能研究方面取得新进展。野拔子具有很强的刺激气味,通过对其完整花序和叶子、以及受损的花和叶子挥发物的提取、鉴定和分析,发现花和叶子的挥发性化合物明显不同。并且,当花和叶子受损后,其挥发性化合物的种类和比例发生变化。

为了进一步揭示植物气味的生态功能,研究人员进行了行为控制实验。结果发现:(1)花气味对传粉者具有吸引作用,并排斥了无效传粉者。当花和叶子受伤后,其挥发性化合物(香薷酮)的含量增高;(2)受损的花和叶子对植食性甲虫具有趋避的作用。该研究揭示了气味在植物与昆虫相互作用中具有多重生态功能,对研究植物化学生态学和生物防御具有重要的参考价值。

图1. (a)中华蜜蜂在Y型嗅觉仪中对野拔子的花和空白对照的行为反应;(b)中华蜜蜂对花和叶子的行为反应;

(c)中华蜜蜂对叶子和空白对照的行为反应;(d)凹纹胡蜂对花和空白对照的的行为反应;

(e)凹纹胡蜂对叶子和空白对照的的行为反应;(f) 熊蜂对花和空白对照的行为反应;

(g)熊蜂对叶片和空白对照的行为反应;(h)花金龟对花序和受损花序的行为反应;

(i)花金龟对叶片和受损叶片的行为反应,(j)基于野拔子花和叶片的挥发性化合物的种类和含量的主成分分析。

原文链接:

Multiple functions of volatiles in flowers and leaves of Elsholtzia rugulosa (Lamiaceae) from southwestern China

原文摘要:

Although the roles of volatile compounds have been examined separately in plant–herbivore or plant–pollinator interactions, few studies have focused on how plant scents can attract effective pollinators, repel ineffective pollinators, and defend against attacks by insect herbivores. We explored the functional significance of volatile compounds that impart a strong odor to Elsholtzia rugulosa, a shrub species in southwestern China. We monitored the pollinating honey bee Apis cerana, as well as two occasional visitors – Vespa velutina and a Bombus sp. – and an herbivorous beetle Oxycetonia jocunda. Behavior experiments using Y-tubes showed that honey bees were attracted primarily by floral scent while hornets and bumble bees were repelled by both the flowers and leaves. Analysis via gas chromatography-mass spectrometry revealed that these tissue types differed in their compositions and relative amounts of volatile compounds. When the plants were damaged, the average relative amounts of Elsholtzia ketone rapidly increased in the flowers and leaves. Furthermore, herbivorous beetles were strongly repelled by damaged tissues, suggesting a potential defense signaling function by these compounds. Our findings again demonstrate that scents have multiple functions in the interactions among plants and insects.

来源: Scientific Reports 浏览次数:0

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