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Age alters uptake pattern of organic and inorganic nitrogen by rubber trees
Liu, Min1,2,3; Xu, Fanzhen4; Xu, Xingliang1,2; Wanek, Wolfgang5; Yang, Xiaodong1
2018-11-01
Source PublicationTREE PHYSIOLOGY
ISSN0829-318X
Volume38Issue:11Pages:1685-1693
Corresponding AuthorXu, Xingliang(xuxingl@hotmail.com)
AbstractSeveral studies have explored plant nutrient acquisition during ecosystem succession, but it remains unclear how age affects nitrogen (N) acquisition by the same tree species. Clarifying the age effect will be beneficial to fertilization management through improving N-use efficiency and reducing the risk of environmental pollution due to NO3- leaching. To clarify the effect of age on N uptake, rubber (Hevea brasiliensis (Willd. ex A. Juss.) Muell. Arg.) plantations of five ages (7, 16, 24, 32 and 49 years) were selected in Xishuangbanna of southern China for brief N-15 exposures of intact roots using field hydroponic experiments. N-15-labeled NH4+, NO3- or glycine were applied in this study. All targeted rubber trees uptake rates followed an order of NH4+ > glycine > NO3-. As age increased, NH4+ uptake increased first and then decreased sharply, partly consistent with the pattern of soil NH4+ concentrations. Uptake of glycine decreased first and then increased gradually, while no significant change of NO3- uptake rates existed with increasing age. Overall, rubber trees with ages from 7 to 49 years all showed a preference for NH4+ uptake. Young rubber trees (7 and 16 years) had higher NH4+ and lower glycine preferences than older trees (24, 32 and 49 years). Mycorrhizal colonization rates of rubber trees were higher in intermediately aged plantations (16, 24 and 32 years) than in plantations aged 7 and 49 years. A positive relationship was observed between arbuscular mycorrhizal colonization rates and NO3- preference. The results from this study demonstrate that rubber trees do not change their preference for NH4+ but strongly decreased their reliance on it with age. These findings indicate that the shift of N uptake patterns with age should be taken into account for rubber fertilization management to improve N-use efficiency and reduce the risk of environmental pollution during rubber production.
Keywordarbuscular mycorrhizae inorganic N organic N rubber tree age
DOI10.1093/treephys/tpy031
WOS KeywordDIFFERENT SUCCESSIONAL STAGES ; MYCORRHIZAL FUNGI ; NITRATE ; ROOT ; PHOTOSYNTHESIS ; PLANTS ; PRODUCTIVITY ; GROUNDWATER ; ACQUISITION ; ECOSYSTEMS
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[31470560] ; National Natural Science Foundation of China[41601318] ; Key Laboratory of Tropical Forest Ecology of Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences ; Youth Innovation Research Team Project[LENOM2016Q0004]
Funding OrganizationNational Natural Science Foundation of China ; Key Laboratory of Tropical Forest Ecology of Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences ; Youth Innovation Research Team Project
WOS Research AreaForestry
WOS SubjectForestry
WOS IDWOS:000452458300007
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/51340
Collection中国科学院地理科学与资源研究所
Corresponding AuthorXu, Xingliang
Affiliation1.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Mengla 666303, Yunnan, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, 11A Datun Rd, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 101408, Peoples R China
4.Laibin Acad Agr Sci, Renmin Rd, Laibin 546100, Guangxi Provinc, Peoples R China
5.Univ Vienna, Res Network Chem Meets Microbiol, Div Terr Ecosyst Res, Dept Microbiol & Ecosyst Sci, Althanstr 14, A-1090 Vienna, Austria
Recommended Citation
GB/T 7714
Liu, Min,Xu, Fanzhen,Xu, Xingliang,et al. Age alters uptake pattern of organic and inorganic nitrogen by rubber trees[J]. TREE PHYSIOLOGY,2018,38(11):1685-1693.
APA Liu, Min,Xu, Fanzhen,Xu, Xingliang,Wanek, Wolfgang,&Yang, Xiaodong.(2018).Age alters uptake pattern of organic and inorganic nitrogen by rubber trees.TREE PHYSIOLOGY,38(11),1685-1693.
MLA Liu, Min,et al."Age alters uptake pattern of organic and inorganic nitrogen by rubber trees".TREE PHYSIOLOGY 38.11(2018):1685-1693.
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