文献类型： 外文期刊

作者： Chen, Gao ¹ ; Ma, Xiao-Kai ² ; Juergens, Andreas ⁴ ; Lu, Jun ⁵ ; Liu, Er-Xi ⁶ ; Sun, Wei-Bang ¹ ; Cai, Xiang-Hai ⁷ ;

作者机构： 1.Chinese Acad Sci, Kunming Inst Bot, Kunming Bot Garden, Kunming 650204, Yunnan, Peoples R China

2.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China

3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

4.Univ KwaZulu Natal, Sch Life Sci, ZA-3209 Pietermaritzburg, South Africa

5.Yunnan Acad Agr Sci, Inst Konjac, Fuyuan 655500, Yunan, Peoples R China

6.Enshi Acad Agr Sci, Inst Konjac, Enshi 445000, Hubei, Peoples R China

7.Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650204, Peoples R China

关键词： Amorphophallus;Deceit pollination;Livor mortis;Pigments;Sapromyophily;Spectral reflectance

期刊名称：JOURNAL OF CHEMICAL ECOLOGY （ 影响因子：2.626； 五年影响因子：2.984 ）

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收录情况： SCI

摘要： By emitting strong scents resembling rotting organic materials suitable for oviposition and/or foraging of flies, sapromyiophilous flowers mimic the substrates that attract flies as pollinators. It has been suggested that the wide range of volatile organic compounds emitted by this deceptive pollination system reflects the trophic preferences of flies to different types of substrate, including herbivore and carnivore feces, carrion, and fruiting bodies of fungi. Previous studies suggest that floral scents play a particularly important role in sapromyiophily. However, few studies on the relative importance of floral color or synergy between visual and olfactory cues in sapromyiophily have been substantiated. In this study, we analyzed fetid floral odor, floral pigment composition, and reflectance of an Amorphophallus konjac C. Koch inflorescence, and we conducted bioassays with different visual and/or olfactory cues to explore an unsubstantiated color profile in sapromyiophily: mimicking livor mortis. Our analysis showed A. konjac can emit oligosulphide-dominated volatile blends similar to those emitted by carrion. Necrophagous flies cannot discriminate between the color of an inflorescence, livor mortis, and floral pigments. We concluded that mimicking livor mortis may represent a common tactic of pollinator attraction in "carrion flower" systems within angiosperms.