UV radiation is the primary factor driving the variation in leaf phenolics across Chinese grasslands

NWIPB OpenIR

	UV radiation is the primary factor driving the variation in leaf phenolics across Chinese grasslands
	Chen, Litong 1; Niu, Kechang 2,3; Wu, Yi 2,3; Geng, Yan 2,3; Mi, Zhaorong 1; Flynn, Dan F. B.1,4; He, Jin-Sheng 1,2,3; He, JS (reprint author), Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, 23 Xinning Rd, Xining 810008, Peoples R China.
	2013-11-01
发表期刊	ECOLOGY AND EVOLUTION
ISSN	2045-7758
卷号	3 期号:14 页码:4696-4710
文章类型	Article
摘要	Due to the role leaf phenolics in defending against ultraviolet B (UVB) under previously controlled conditions, we hypothesize that ultraviolet radiation (UVR) could be a primary factor driving the variation in leaf phenolics in plants over a large geographic scale. We measured leaf total phenolics, ultraviolet-absorbing compounds (UVAC), and corresponding leaf N, P, and specific leaf area (SLA) in 151 common species. These species were from 84 sites across the Tibetan Plateau and Inner Mongolian grasslands of China with contrasting UVR (354 vs. 161mW/cm(2) on average). Overall, leaf phenolics and UVAC were all significantly higher on the Tibetan Plateau than in the Inner Mongolian grasslands, independent of phylogenetic relationships between species. Regression analyses showed that the variation in leaf phenolics was strongly affected by climatic factors, particularly UVR, and soil attributes across all sites. Structural equation modeling (SEM) identified the primary role of UVR in determining leaf phenolic concentrations, after accounting for colinearities with altitude, climatic, and edaphic factors. In addition, phenolics correlated positively with UVAC and SLA, and negatively with leaf N and N: P. These relationships were steeper in the lower-elevation Inner Mongolian than on the Tibetan Plateau grasslands. Our data support that the variation in leaf phenolics is controlled mainly by UV radiation, implying high leaf phenolics facilitates the adaptation of plants to strong irradiation via its UV-screening and/or antioxidation functions, particularly on the Tibetan Plateau. Importantly, our results also suggest that leaf phenolics may influence on vegetation attributes and indirectly affect ecosystem processes by covarying with leaf functional traits.; Due to the role leaf phenolics in defending against ultraviolet B (UVB) under previously controlled conditions, we hypothesize that ultraviolet radiation (UVR) could be a primary factor driving the variation in leaf phenolics in plants over a large geographic scale. We measured leaf total phenolics, ultraviolet-absorbing compounds (UVAC), and corresponding leaf N, P, and specific leaf area (SLA) in 151 common species. These species were from 84 sites across the Tibetan Plateau and Inner Mongolian grasslands of China with contrasting UVR (354 vs. 161mW/cm(2) on average). Overall, leaf phenolics and UVAC were all significantly higher on the Tibetan Plateau than in the Inner Mongolian grasslands, independent of phylogenetic relationships between species. Regression analyses showed that the variation in leaf phenolics was strongly affected by climatic factors, particularly UVR, and soil attributes across all sites. Structural equation modeling (SEM) identified the primary role of UVR in determining leaf phenolic concentrations, after accounting for colinearities with altitude, climatic, and edaphic factors. In addition, phenolics correlated positively with UVAC and SLA, and negatively with leaf N and N: P. These relationships were steeper in the lower-elevation Inner Mongolian than on the Tibetan Plateau grasslands. Our data support that the variation in leaf phenolics is controlled mainly by UV radiation, implying high leaf phenolics facilitates the adaptation of plants to strong irradiation via its UV-screening and/or antioxidation functions, particularly on the Tibetan Plateau. Importantly, our results also suggest that leaf phenolics may influence on vegetation attributes and indirectly affect ecosystem processes by covarying with leaf functional traits.
关键词	Inner Mongolia Leaf Functional Traits Leaf Phenolics Tibetan Plateau Ultraviolet Absorbing Compounds Uv Radiation
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]	ULTRAVIOLET-B RADIATION ; ABSORBING COMPOUNDS ; SCREENING COMPOUNDS ; OZONE DEPLETION ; PLANT PHENOLICS ; VULGARE LEAVES ; ENHANCED UVB ; STOICHIOMETRY ; FLAVONOIDS ; DEFENSE
收录类别	SCI
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:000327304000008
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/3906
专题	中国科学院西北高原生物研究所
通讯作者	He, JS (reprint author), Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, 23 Xinning Rd, Xining 810008, Peoples R China.
作者单位	1.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China 2.Peking Univ, Coll Urban & Environm Sci, Dept Ecol, Beijing 100871, Peoples R China 3.Peking Univ, Minist Educ, Key Lab Earth Surface Proc, Beijing 100871, Peoples R China 4.Univ Zurich, Inst Evolutionary Biol & Environm Studies, CH-8057 Zurich, Switzerland
推荐引用方式 GB/T 7714	Chen, Litong,Niu, Kechang,Wu, Yi,et al. UV radiation is the primary factor driving the variation in leaf phenolics across Chinese grasslands[J]. ECOLOGY AND EVOLUTION,2013,3(14):4696-4710.
APA	Chen, Litong.,Niu, Kechang.,Wu, Yi.,Geng, Yan.,Mi, Zhaorong.,...&He, JS .(2013).UV radiation is the primary factor driving the variation in leaf phenolics across Chinese grasslands.ECOLOGY AND EVOLUTION,3(14),4696-4710.
MLA	Chen, Litong,et al."UV radiation is the primary factor driving the variation in leaf phenolics across Chinese grasslands".ECOLOGY AND EVOLUTION 3.14(2013):4696-4710.

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