Effects of mistletoe removal on growth, N and C reserves, and carbon and oxygen isotope composition in Scots pine hosts

doi:10.1093/treephys/tpw024

CORC > 植物研究所 > 中国科学院植物研究所 > 中科院植物分子生理学重点实验室

	Effects of mistletoe removal on growth, N and C reserves, and carbon and oxygen isotope composition in Scots pine hosts
	Yan, Cai-Feng ; Gessler, Arthur 4,5; Rigling, Andreas ; Dobbertin, Matthias ; Han, Xing-Guo ; Li, Mai-He
刊名	TREE PHYSIOLOGY
	2016
卷号	36 期号:5
关键词	mistletoes nitrogen nonstructural carbohydrates soluble sugars stable carbon isotope stable oxygen isotope starch
ISSN号	0829-318X
DOI	10.1093/treephys/tpw024
文献子类	Article
英文摘要	Most mistletoes are xylem-tapping hemiparasites, which derive their resources from the host's xylem solution. Thus, they affect the host's water relations and resource balance. To understand the physiological mechanisms underlying the mistletoe-host relationship, we experimentally removed Viscum album ssp. austriacum (Wiesb.) Vollmann from adult Pinus sylvestris L. host trees growing in a Swiss dry valley. We analyzed the effects of mistletoe removal over time on host tree growth and on concentrations of nonstructural carbohydrates (NSC) and nitrogen (N) in needles, fine roots and sapwood. In addition, we assessed the delta C-13 and delta O-18 in host tree rings. After mistletoe removal, delta C-13 did not change in newly produced tree rings compared with tree rings in control trees (still infected with mistletoe), but delta O-18 values increased. This pattern might be interpreted as a decrease in assimilation (A) and stomatal conductance (g(s)), but in our study, it most likely points to an inadequacy of the dual isotope approach. Instead, we interpret the unchanged delta C-13 in tree rings upon mistletoe removal as a balanced increase in A and g(s) that resulted in a constant intrinsic water use efficiency (defined as A/g(s)). Needle area-based concentrations of N, soluble sugars and NSC, as well as needle length, single needle area, tree ring width and shoot growth, were significantly higher in trees from which mistletoe was removed than in control trees. This finding suggests that mistletoe removal results in increased N availability and carbon gain, which in turn leads to increased growth rates of the hosts. Hence, in areas where mistletoe is common and the population is large, mistletoe management (e.g., removal) may be needed to improve the host vigor, growth rate and productivity, especially for relatively small trees and crop trees in xeric growth conditions.
学科主题	Forestry
电子版国际标准刊号	1758-4469
出版地	OXFORD
WOS关键词	XYLEM-TAPPING MISTLETOE ; ALBUM SSP AUSTRIACUM ; WATER-USE EFFICIENCY ; SPRUCE PICEA-GLAUCA ; BEHRIANA F-MUELL ; EX MIQ TIEGH ; DWARF MISTLETOE ; VISCUM-ALBUM ; LEAF WATER ; AMYEMA-MIQUELII
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000377403300004
资助机构	Sino-Swiss Science and Technology Cooperation (SSSTC) program [EG44-092011] ; Chinese State Key Laboratory of Forest and Soil Ecology [LFSE2013-01] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41371076]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/24731]
专题	中科院植物分子生理学重点实验室
作者单位	1.Berlin Brandenburg Inst Adv Biodivers Res BBIB, D-14195 Berlin, Germany 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 3.Swiss Fed Res Inst WSL, Zuercherstr 111, CH-8903 Birmensdorf, Switzerland 4.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110164, Peoples R China 5.Leibniz Ctr Agr Landscape Res ZALF, Eberswalderstr 84, D-15374 Muncheberg, Germany
推荐引用方式 GB/T 7714	Yan, Cai-Feng,Gessler, Arthur,Rigling, Andreas,et al. Effects of mistletoe removal on growth, N and C reserves, and carbon and oxygen isotope composition in Scots pine hosts[J]. TREE PHYSIOLOGY,2016,36(5).
APA	Yan, Cai-Feng,Gessler, Arthur,Rigling, Andreas,Dobbertin, Matthias,Han, Xing-Guo,&Li, Mai-He.(2016).Effects of mistletoe removal on growth, N and C reserves, and carbon and oxygen isotope composition in Scots pine hosts.TREE PHYSIOLOGY,36(5).
MLA	Yan, Cai-Feng,et al."Effects of mistletoe removal on growth, N and C reserves, and carbon and oxygen isotope composition in Scots pine hosts".TREE PHYSIOLOGY 36.5(2016).