Floral adaptations of two lilies: implications for the evolution and pollination ecology of huge trumpet-shaped flowers

doi:10.1002/ajb2.1275

	Floral adaptations of two lilies: implications for the evolution and pollination ecology of huge trumpet-shaped flowers
	Liu, Chang-Qiu 1; Gao, Yun-Dong 2,3; Niu, Yang1 ; Xiong, Ying-Ze 4; Sun, Hang1
通讯作者	Sun, Hang(sunhang@mail.kib.ac.cn)
	2019-05-01
发表期刊	AMERICAN JOURNAL OF BOTANY
ISSN	0002-9122
卷号	106 期号:5 页码:622-632
摘要	Premise Evolutionary transitions among floral morphologies, many of which provide evidence for adaptation to novel pollinators, are common. Some trumpet-shaped flowers are among the largest flowers in angiosperms, occurring in different lineages. Our goal was to investigate the role of pollinators in the evolution of these flowers using Lilium. Methods We investigated floral traits and pollinators of L. primulinum var. ochraceum and L. brownii var. viridulum and reviewed reports of visitors to huge trumpet-shaped flowers. Using a published phylogeny of Lilium, we reconstructed ancestral floral morphological states in Lilium to elucidate the origins of trumpet-shaped lilies. Results Both lilies are largely self-incompatible and show floral syndromes indicative of hawkmoth pollination. The short trumpet-shaped lily can be pollinated by short-tongued (<40 mm) but not long-tongued hawkmoths (>65 mm), while the huge trumpet-shaped lily can be pollinated by both. A literature review including 22 species of trumpet-shaped flowers suggests that their pollinator guilds commonly include both short- and long-tongued moths. A phylogenetic reconstruction indicates that trumpet-shaped lilies possibly have multiple origins from tepal-reflexed ancestors, at least six of which have evolved huge flowers (>50 mm). Conclusions Adaptation to short-tongued hawkmoths may have initiated the evolution of trumpet-shaped lilies. Huge trumpet-shaped lilies may have evolved as a response to selection by long-tongued hawkmoths, without excluding the short-tongued ones. This evolutionary pathway leads to a functionally more generalized pollination system instead of an increasingly specialized one and is not necessarily associated with pollinator shifts.
关键词	Ancestral state reconstruction evolutionary transition floral scent floral syndrome hawkmoth pollination Liliaceae Lilium nocturnal pollination pollinator trumpet-shaped flower
DOI	10.1002/ajb2.1275
收录类别	SCI
语种	英语
WOS记录号	WOS:000467749300003
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/67523
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
通讯作者	Sun, Hang
作者单位	1.Chinese Acad Sci, Key Lab Plant Divers & Biogeog East Asia, Kunming Inst Bot, Kunming 650201, Yunnan, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Mt Ecol Restorat & Bioresource Utiliz, Chengdu Inst Biol, Chengdu 610041, Sichuan, Peoples R China 3.Chinese Acad Sci, Ecol Restorat & Biodivers Conservat Key Lab Sichu, Chengdu Inst Biol, Chengdu 610041, Sichuan, Peoples R China 4.China Cent Normal Univ, Sch Life Sci, Wuhan 430079, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Liu, Chang-Qiu,Gao, Yun-Dong,Niu, Yang,et al. Floral adaptations of two lilies: implications for the evolution and pollination ecology of huge trumpet-shaped flowers[J]. AMERICAN JOURNAL OF BOTANY,2019,106(5):622-632.
APA	Liu, Chang-Qiu,Gao, Yun-Dong,Niu, Yang,Xiong, Ying-Ze,&Sun, Hang.(2019).Floral adaptations of two lilies: implications for the evolution and pollination ecology of huge trumpet-shaped flowers.AMERICAN JOURNAL OF BOTANY,106(5),622-632.
MLA	Liu, Chang-Qiu,et al."Floral adaptations of two lilies: implications for the evolution and pollination ecology of huge trumpet-shaped flowers".AMERICAN JOURNAL OF BOTANY 106.5(2019):622-632.

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