| Floral nectary morphology and evolution in Pedicularis (Orobanchaceae) | |
Liu, Min-Lu; Yu, Wen-Bin ; Kuss, Patrick; Li, De-Zhu; Wang, Hong
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| 2015 | |
| Source Publication | BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
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| ISSN | 0024-4074 |
| Volume | 178Issue:4Pages:592-607 |
| Abstract | 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. |
| Keyword | Anatomy Ancestral State Reconstruction Nectary Form Pollinator Behaviour Rudimentary Structure |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/9207 |
| Collection | 2012年后新成立研究组 中国科学院西双版纳热带植物园 |
| Recommended Citation 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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