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题名: Dark purple nectar as a foraging signal in a bird-pollinated Himalayan plant
作者: Zhang, Feng-Ping1; null(蔡祥海)2; null(王红)1; Ren, Zong-Xin3; Larson-Rabin, Zachary3; null(李德铢)1, 3
刊名: NEW PHYTOLOGIST
关键词: 5-hydroxyflavylium ; anthocyanidin ; bird pollinator ; dark purple nectar ; foraging signal ; Himalayas ; Leucosceptrum canum
英文摘要: Some plants secrete coloured nectar to attract pollinators, but little is known about the chemical origins of nectar colouration and its ecological function. Leucosceptrum canum stands out as the only plant with coloured nectar recorded in the Himalayas. Here, we focused on the compound associated with the dark colour of the nectar, as well as its secretion dynamics during the flowering season and its relationship to pollinators. Fresh nectar was analysed by semi-preparative reversed-phase high-performance liquid chromatography (HPLC), LC-MS and HRESIMS (high resolution electronspray ionization mass spectroscopy) to determine which compound causes the nectar colouration. Behavioural experiments were conducted with birds and honeybees to elucidate the effect of the nectar colour and volume on pollinators. We identified a purple anthocyanidin, 5-hydroxyflavylium, as a natural nectar product for the first time. Two short-billed birds were found to pollinate this plant, which employs two nectar-based mechanisms to direct bird pollinators to reproductively active flowers, controlling nectar palatability and presenting a foraging signal for birds by altering nectar volume and colour in a developmental stage-specific manner. 5-Hydroxyflavylium was found to be the cause of the nectar colouration, the function of which is to act as a foraging signal to increase pollination efficiency through nectar visibility and palatability.
出版日期: 2012
卷号: 193, 期号:1, 页码:188-195
DOI标识: 10.1111/j.1469-8137.2011.03894.x
语种: 英语
ISSN号: 0028-646X
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/10547
Appears in Collections:中国西南野生生物种质资源库_期刊论文

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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650204, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources W China, Kunming 650204, Peoples R China
3.Chinese Acad Sci, Kunming Inst Bot, Plant Germplasm & Genom Ctr, Germplasm Bank Wild Species, Kunming 650204, Peoples R China

Recommended Citation:
Zhang, FP; Cai, XH; Wang, H; Ren, ZX; Larson-Rabin, Z; Li, DZ.Dark purple nectar as a foraging signal in a bird-pollinated Himalayan plant,NEW PHYTOLOGIST,2012,193(1):188-195
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