Pollen sensitivity to ultraviolet-B (UV-B) suggests floral structure evolution in alpine plants

doi:10.1038/srep04520

	Pollen sensitivity to ultraviolet-B (UV-B) suggests floral structure evolution in alpine plants
	Zhang, Chan 1,2,3; Yang, Yong-Ping1,2,4 ; Duan, Yuan-Wen1,2,4
Corresponding Author	Duan, YW (reprint author), Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Biodivers & Biogeog East Asia, Kunming 650204, Peoples R China. ; duanyw@mail.kib.ac.cn
	2014-03-31
Source Publication	SCIENTIFIC REPORTS
ISSN	2045-2322
Volume	4 Pages:4520
Abstract	Various biotic and abiotic factors are known to exert selection pressures on floral traits, but the influence of ultraviolet-B (UV-B) light on the evolution of flower structure remains relatively unexplored. We have examined the effectiveness of flower structure in blocking radiation and the effects of UV-B on pollen viability in 42 species of alpine plants in the Hengduan Mountains, China. Floral forms were categorized as either protecting or exposing pollen grains to UV-B. The floral materials of plants with exposed and protected pollen grains were able to block UV-B at similar levels. Exposure to UV-B radiation in vitro resulted in a significantly greater loss of viability in pollen from plant species with protective floral structures. The pronounced sensitivity of protected pollen to UV-B radiation was associated with the type of flower structure. These findings demonstrate that UV-B plays an important role in the evolution of protective floral forms in alpine plants.
Keyword	Multifunctional Bracts Tube Growth In-vitro Radiation Germination Rain Ranunculaceae Pollination Taxa
Subject Area	Multidisciplinary Sciences
DOI	10.1038/srep04520
Indexed By	SCI
Language	英语
WOS ID	WOS:000333516200007
Citation statistics	Cited Times:20[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.kib.ac.cn/handle/151853/18071
Collection	中国科学院青藏高原研究所昆明部
Affiliation	1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Biodivers & Biogeog East Asia, Kunming 650204, Peoples R China 2.Chinese Acad Sci, Inst Tibetan Plateau Res Kunming, Kunming Inst Bot, Kunming 650204, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Kunming Inst Bot, Plant Germplasm & Genom Ctr, Germplasm Bank Wild Species, Kunming 650204, Peoples R China
Recommended Citation GB/T 7714	Zhang, Chan,Yang, Yong-Ping,Duan, Yuan-Wen. Pollen sensitivity to ultraviolet-B (UV-B) suggests floral structure evolution in alpine plants[J]. SCIENTIFIC REPORTS,2014,4:4520.
APA	Zhang, Chan,Yang, Yong-Ping,&Duan, Yuan-Wen.(2014).Pollen sensitivity to ultraviolet-B (UV-B) suggests floral structure evolution in alpine plants.SCIENTIFIC REPORTS,4,4520.
MLA	Zhang, Chan,et al."Pollen sensitivity to ultraviolet-B (UV-B) suggests floral structure evolution in alpine plants".SCIENTIFIC REPORTS 4(2014):4520.

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