Floral nectary morphology and evolution in Pedicularis (Orobanchaceae)

doi:10.1111/boj.12288

	Floral nectary morphology and evolution in Pedicularis (Orobanchaceae)
	Liu, Min-Lu; Yu, Wen-Bin; Kuss, Patrick; Li, De-Zhu; Wang, Hong
	2015-08-01
发表期刊	BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
卷号	178 期号:4 页码:592-607
摘要	Intricate associations between floral morphology and pollinator foraging behaviour are common. In this context, the presence and form of floral nectaries can play a crucial role in driving floral evolution and diversity in flowering plants. However, the reconstruction of the ancestral state of nectary form is often hampered by a lack of anatomical studies and well-resolved phylogenetic trees. Here, we studied 39 differentially pollinated Pedicularis spp., a genus with pronounced interspecific variation in colour, shape and size of the corolla. Anatomical and scanning electron microscopy observations revealed two nectary forms [bulged (N=27) or elongated (N=5)] or the absence of nectaries (N=7). In a phylogenetic context, our data suggest that: (1) the bulged nectary should be the ancestral state; (2) nectaries were independently lost in some beaked species; and (3) elongated nectaries evolved independently in some clades of beakless species. Phylogenetic path analysis showed that nectary presence is indirectly correlated with beak length/pollinator behaviour through an intermediate factor, nectar production. No significant correlation was found between nectary type and nectar production, beak length or pollinator behaviour. Some beaked species had nectary structures, although they did not produce nectar. The nectary in beaked species may be a vestigial structure retained during a recent rapid radiation of Pedicularis, especially in the Himalaya-Hengduan Mountains of south-western China.(c) 2015 The Linnean Society of London, Botanical Journal of the Linnean Society, 2015, 178, 592-607.
关键词	Anatomy Ancestral State Reconstruction Nectary Form Pollinator Behaviour Rudimentary Structure
DOI	10.1111/boj.12288
收录类别	SCI
语种	英语
WOS记录号	WOS:000357882200004
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/24990
专题	中国科学院东亚植物多样性与生物地理学重点实验室
推荐引用方式 GB/T 7714	Liu, Min-Lu,Yu, Wen-Bin,Kuss, Patrick,et al. Floral nectary morphology and evolution in Pedicularis (Orobanchaceae)[J]. BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,2015,178(4):592-607.
APA	Liu, Min-Lu,Yu, Wen-Bin,Kuss, Patrick,Li, De-Zhu,&Wang, Hong.(2015).Floral nectary morphology and evolution in Pedicularis (Orobanchaceae).BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,178(4),592-607.
MLA	Liu, Min-Lu,et al."Floral nectary morphology and evolution in Pedicularis (Orobanchaceae)".BOTANICAL JOURNAL OF THE LINNEAN SOCIETY 178.4(2015):592-607.

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