CHANGE IN FLORAL ORIENTATION IN ANISODUS LURIDUS (SOLANACEAE) PROTECTS POLLEN GRAINS AND FACILITATES DEVELOPMENT OF FERTILIZED OVULES

doi:10.3732/ajb.1000010

CORC > 昆明植物研究所 > 中国科学院昆明植物研究所 > 中国科学院青藏高原研究所昆明部

	CHANGE IN FLORAL ORIENTATION IN ANISODUS LURIDUS (SOLANACEAE) PROTECTS POLLEN GRAINS AND FACILITATES DEVELOPMENT OF FERTILIZED OVULES
	Wang, Yun 1,2; Meng, Li-Lua 3; Yang, Yong-Ping1,2 ; Duan, Yuan-Wen1,2
刊名	AMERICAN JOURNAL OF BOTANY
	2010-10-01
卷号	97 期号:10 页码:1618-1624
关键词	Anisodus Luridus Male/female Fitness Persistent Calyx Pollen Viability Qinghai-tibet Plateau Rain Solanaceae Solar Radiation
ISSN号	0002-9122
DOI	10.3732/ajb.1000010
文献子类	Article
英文摘要	Premise of the study : Some floral traits could be selected by pollinators and nonpollinator agents, and studying the floral traits shaped by physical agents could reveal adaptive mechanisms to the environment. We explored the adaptive significance of the change in floral orientation, from pendulous flowers to erect fruits that have a persistent calyx, in Anisodus luridus, a perennial native to the Qinghai-Tibet Plateau (QTP). Methods : We examined the effect of flower orientation on pollinator visitation rates, pollen deposition efficiency, pollen quantity, and pollen viability to estimate whether pendulous flowers have improved male fitness. We then measured seed production and seed germination rate to assess whether erect fruits have enhanced female fitness. Key results : Pendulous flowers did not have any preferred pollinators or increased pollen deposition. In artificially erected flowers, the number of pollen grains greatly decreased after rainwash. Pollen germination experiments indicated that pollen damage by water and exposure to solar radiation is serious. In the persistent calyx that holds water within it, the temperature inside the calyx changed slower than in the calyx that had the water removed. After supplemental pollination, the seed number, seed set, and seed mass of fruits that had water removed from the calyx were reduced greatly in both years. Conclusions : We conclude that the change in floral orientation could enhance male and female fitness of A. luridus and is effectively adaptive to the alpine environments, indicating a strong selection by the combined pressure from various abiotic nonpollinator agents in shaping the floral traits of this alpine plant.; Premise of the study : Some floral traits could be selected by pollinators and nonpollinator agents, and studying the floral traits shaped by physical agents could reveal adaptive mechanisms to the environment. We explored the adaptive significance of the change in floral orientation, from pendulous flowers to erect fruits that have a persistent calyx, in Anisodus luridus, a perennial native to the Qinghai-Tibet Plateau (QTP).
学科主题	Plant Sciences
WOS关键词	ULTRAVIOLET-B RADIATION ; POLEMONIUM-VISCOSUM ; SEED PREDATORS ; FLOWER COLOR ; POLLINATORS ; SELECTION ; GERMINATION ; EVOLUTION ; TRAITS ; SYSTEM
WOS研究方向	Plant Sciences
语种	英语
WOS记录号	WOS:000282513800012
资助机构	NSFC [40930209, 31070337]; CAS [KSCX2-YW-Z-1019]; NSF of Yunnan province [2008ZC042M]
公开日期	2011-12-06
内容类型	期刊论文
源URL	[http://ir.kib.ac.cn:8080/handle/151853/2613]
专题	昆明植物研究所_中国科学院青藏高原研究所昆明部
作者单位	1.CAS, Key Lab Biodivers & Biogeog, Kunming Inst Bot, Kunming 650204, Yunnan, Peoples R China 2.CAS, Inst Tibetan Plateau Res Kunming, Kunming Inst Bot, Kunming 650204, Yunnan, Peoples R China 3.Yunnan Normal Univ, Life Coll, Kunming 650092, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yun,Meng, Li-Lua,Yang, Yong-Ping,et al. CHANGE IN FLORAL ORIENTATION IN ANISODUS LURIDUS (SOLANACEAE) PROTECTS POLLEN GRAINS AND FACILITATES DEVELOPMENT OF FERTILIZED OVULES[J]. AMERICAN JOURNAL OF BOTANY,2010,97(10):1618-1624.
APA	Wang, Yun,Meng, Li-Lua,Yang, Yong-Ping,&Duan, Yuan-Wen.(2010).CHANGE IN FLORAL ORIENTATION IN ANISODUS LURIDUS (SOLANACEAE) PROTECTS POLLEN GRAINS AND FACILITATES DEVELOPMENT OF FERTILIZED OVULES.AMERICAN JOURNAL OF BOTANY,97(10),1618-1624.
MLA	Wang, Yun,et al."CHANGE IN FLORAL ORIENTATION IN ANISODUS LURIDUS (SOLANACEAE) PROTECTS POLLEN GRAINS AND FACILITATES DEVELOPMENT OF FERTILIZED OVULES".AMERICAN JOURNAL OF BOTANY 97.10(2010):1618-1624.