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Zhou X, Ouyang S, Saurer M, Feng M, Bose AK, Duan H, Tie L, Shen W, Gessler A. Species-specific responses of C and N allocation to N addition: evidence from dual 13C and 15N labeling in three tree species. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:172164. [PMID: 38580112 DOI: 10.1016/j.scitotenv.2024.172164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 03/29/2024] [Accepted: 03/31/2024] [Indexed: 04/07/2024]
Abstract
Soil nitrogen (N) availability affects plant carbon (C) utilization. However, it is unclear how various tree functional types respond to N addition in terms of C assimilation, allocation, and storage. Here, a microcosm experiment with dual 13C and 15N labeling was conducted to study the effects of N addition (i.e., control, 0 g N kg-1; moderate N addition, 1.68 g N kg-1; and high N addition, 3.36 g N kg-1 soil) on morphological traits, on changes in nonstructural carbohydrates (NSC) in different organs, as well as on C and N uptake and allocation in three European temperate forest tree species (i.e., Acer pseudoplatanus, Picea abies and Abies alba). Our results demonstrated that root N uptake rates of the three tree species increased by N addition. In A. pseudoplatanus, N uptake by roots, N allocation to aboveground organs, and aboveground biomass allocation significantly improved by moderate and high N addition. In A. alba, only the high N addition treatment considerably raised aboveground N and C allocation. In contrast, biomass as well as C and N allocation between above and belowground tissues were not altered by N addition in P. abies. Meanwhile, NSC content as well as C and N coupling (represented by the ratio of relative 13C and 15N allocation rates in organs) were affected by N addition in A. pseudoplantanus and P. abies but not in A. alba. Overall, A. pseudoplatanus displayed the highest sensitivity to N addition and the highest N requirement among the three species, while P. abies had a lower N demand than A. alba. Our findings highlight that the responses of C and N allocation to soil N availability are species-specific and vary with the amount of N addition.
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Affiliation(s)
- Xiaoqian Zhou
- Institute for Forest Resources and Environment of Guizhou, Key Laboratory of Forest Cultivation in Plateau Mountain of Guizhou Province, College of Forestry, Guizhou University, Guiyang 550025, China
| | - Shengnan Ouyang
- Institute for Forest Resources and Environment of Guizhou, Key Laboratory of Forest Cultivation in Plateau Mountain of Guizhou Province, College of Forestry, Guizhou University, Guiyang 550025, China; Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf 8903, Switzerland.
| | - Matthias Saurer
- Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf 8903, Switzerland
| | - Mei Feng
- Institute for Forest Resources and Environment of Guizhou, Key Laboratory of Forest Cultivation in Plateau Mountain of Guizhou Province, College of Forestry, Guizhou University, Guiyang 550025, China
| | - Arun K Bose
- Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf 8903, Switzerland; Forestry and Wood Technology Discipline, Khulna University, Khulna 9208, Bangladesh
| | - Honglang Duan
- Institute for Forest Resources and Environment of Guizhou, Key Laboratory of Forest Cultivation in Plateau Mountain of Guizhou Province, College of Forestry, Guizhou University, Guiyang 550025, China
| | - Liehua Tie
- Institute for Forest Resources and Environment of Guizhou, Key Laboratory of Forest Cultivation in Plateau Mountain of Guizhou Province, College of Forestry, Guizhou University, Guiyang 550025, China
| | - Weijun Shen
- Guangxi Key Laboratory of Forest Ecology and Conservation, State Key Laboratory for Conservation and Utilization of Agro-bioresources, College of Forestry, Guangxi University, Nanning, Guangxi 530004, China
| | - Arthur Gessler
- Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf 8903, Switzerland; Institute of Terrestrial Ecosystems, ETH Zurich, Zurich 8902, Switzerland
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Tian Y, Zhao X, Yin B, Zeng K, Yan X. Direct Canopy Uptake of Atmospheric Reactive Nitrogen: A Significant Pathway for Airborne Nitrogen Input into Rice Paddy Ecosystems. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:13143-13151. [PMID: 36121704 DOI: 10.1021/acs.jafc.2c04467] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Direct canopy uptake of atmospheric reactive nitrogen (ARN) is an important process, but the magnitude of ARN assimilation in agricultural ecosystems is unclear. We used a combination of a water-culture rice-growing system with a 15N tracer to investigate canopy uptake of ARN under field conditions. Gross uptake was quantified using the plant N partitioning approach, and the net uptake of ARN was estimated based on the system N balance. Gross ARN uptakes were 23.1 and 38.2 kg N·ha-1 during vegetative and reproductive growth, respectively. Although a certain amount of N was lost mainly from the rice canopy during the reproductive phase, the net gain of ARN was 34.3 kg N·ha-1 over the entire growing season, much higher than the present estimates of dry N deposition using an indirect inferential approach. Our results highlight the magnitude of direct canopy uptake of ARN in rice paddy ecosystems, an important N process that is rarely considered in present N budgets.
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Affiliation(s)
- Yuhua Tian
- State Key Laboratory of Soil and Sustainable Agriculture, Changshu National Agro-Ecosystem Observation and Research Station, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, P. R. China
| | - Xu Zhao
- State Key Laboratory of Soil and Sustainable Agriculture, Changshu National Agro-Ecosystem Observation and Research Station, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, P. R. China
| | - Bin Yin
- State Key Laboratory of Soil and Sustainable Agriculture, Changshu National Agro-Ecosystem Observation and Research Station, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, P. R. China
| | - Ke Zeng
- State Key Laboratory of Soil and Sustainable Agriculture, Changshu National Agro-Ecosystem Observation and Research Station, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, P. R. China
| | - Xiaoyuan Yan
- State Key Laboratory of Soil and Sustainable Agriculture, Changshu National Agro-Ecosystem Observation and Research Station, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, P. R. China
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Wang X, Wei X, Wu G, Chen S. Ammonium application mitigates the effects of elevated carbon dioxide on the carbon/nitrogen balance of Phoebe bournei seedlings. TREE PHYSIOLOGY 2021; 41:1658-1668. [PMID: 33580964 DOI: 10.1093/treephys/tpab026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 02/02/2021] [Indexed: 06/12/2023]
Abstract
The study of plant responses to increases in atmospheric carbon dioxide (CO2) concentration is crucial to understand and to predict the effect of future global climate change on plant adaptation and evolution. Increasing amount of nitrogen (N) can promote the positive effect of CO2, while how N forms would modify the degree of CO2 effect is rarely studied. The aim of this study was to determine whether the amount and form of nitrogen (N) could mitigate the effects of elevated CO2 (eCO2) on enzyme activities related to carbon (C) and N metabolism, the C/N ratio, and growth of Phoebe bournei (Hemsl.) Y.C. Yang. One-year-old P. bournei seedlings were grown in an open-top air chamber under either an ambient CO2 (aCO2) (350 ± 70 μmol•mol-1) or an eCO2 (700 ± 10 μmol•mol-1) concentration and cultivated in soil treated with either moderate (0.8 g per seedling) or high applications (1.2 g per seedling) of nitrate or ammonium. In seedlings treated with a moderate level of nitrate, the activities of key enzymes involved in C and N metabolism (i.e., Rubisco, Rubisco activase and glutamine synthetase) were lower under eCO2 than under aCO2. By contrast, key enzyme activities (except GS) in seedlings treated with high nitrate or ammonium were not significantly different between aCO2 and eCO2 or higher under eCO2 than under aCO2. The C/N ratio of seedlings treated with moderate or high nitrate under eCO2was significantly changed compared with the seedlings grown under aCO2, whereas the C/N ratio of seedlings treated with ammonium was not significantly different between aCO2 and eCO2. Therefore, under eCO2, application of ammonium can be beneficial C and N metabolism and mitigate effects on the C/N ratio.
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Affiliation(s)
- Xiao Wang
- College of Forestry, Guizhou University, Guiyang 550025, China
| | - Xiaoli Wei
- College of Forestry, Guizhou University, Guiyang 550025, China
- Institute for Forest Resources and Environment of Guizhou, Guizhou University, Guiyang 550025, China
| | - Gaoyin Wu
- College of Forestry, Guizhou University, Guiyang 550025, China
| | - Shengqun Chen
- College of Forestry, Guizhou University, Guiyang 550025, China
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The difference of soil properties between pure and mixed Chinese fir (Cunninghamia lanceolata) plantations depends on tree species. Glob Ecol Conserv 2020. [DOI: 10.1016/j.gecco.2020.e01009] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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High Nitrate or Ammonium Applications Alleviated Photosynthetic Decline of Phoebe bournei Seedlings under Elevated Carbon Dioxide. FORESTS 2020. [DOI: 10.3390/f11030293] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Phoebe bournei is a precioustimber species and is listed as a national secondary protection plant in China. However, seedlings show obvious photosynthetic declinewhen grown long-term under an elevated CO2 concentration (eCO2). The global CO2 concentration is predicted to reach 700 μmol·mol−1 by the end of this century; however, little is known about what causes the photosynthetic decline of P. bournei seedlings under eCO2 or whether this photosynthetic decline could be controlled by fertilization measures. To explore this problem, one-year-old P. bournei seedlings were grown in an open-top air chamber under either an ambient CO2 (aCO2) concentration (350 ± 70 μmol·mol−1) or an eCO2 concentration (700 ± 10 μmol·mol−1) from June 12th to September 8th and cultivated in soil treated with either moderate (0.8 g per seedling) or high applications (1.2 g per seedling) of nitrate or ammonium. Under eCO2, the net photosynthetic rate (Pn) of P. bournei seedlings treated with a moderate nitrate application was 27.0% lower than that of seedlings grown under an aCO2 concentration (p < 0.05), and photosynthetic declineappeared to be accompanied by a reduction of the electron transport rate (ETR), actual photochemical efficiency, chlorophyll content, ribulose-1,5-bisphosphate carboxylase/oxygenase (rubisco), rubisco activase (RCA) content, leaf thickness, and stomatal density. The Pn of seedlings treated with a high application of nitrate under eCO2 was 5.0% lower than that of seedlings grown under aCO2 (p > 0.05), and photosynthetic declineoccurred more slowly, accompanied by a significant increase in rubisco content, RCA content, and stomatal density. The Pn of P. bournei seedlings treated with either a moderate or a high application of ammonium and grown under eCO2 was not significantly differentto that of seedlings grown under aCO2—there was no photosynthetic decline—and the ETR, chlorophyll content, rubisco content, RCA content, and leaf thickness values were all increased. Increasing the application of nitrate or the supply of ammonium could slow down or prevent the photosynthetic declineof P. bournei seedlings under eCO2 by changing the leaf structure and photosynthetic physiological characteristics.
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DaMatta FM, Avila RT, Cardoso AA, Martins SCV, Ramalho JC. Physiological and Agronomic Performance of the Coffee Crop in the Context of Climate Change and Global Warming: A Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018. [PMID: 29517900 DOI: 10.1021/acs.jafc.7b04537] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Coffee is one of the most important global crops and provides a livelihood to millions of people living in developing countries. Coffee species have been described as being highly sensitive to climate change, as largely deduced from modeling studies based on predictions of rising temperatures and changing rainfall patterns. Here, we discuss the physiological responses of the coffee tree in the context of present and ongoing climate changes, including drought, heat, and light stresses, and interactions between these factors. We also summarize recent insights on the physiological and agronomic performance of coffee at elevated atmospheric CO2 concentrations and highlight the key role of CO2 in mitigating the harmful effects of heat stress. Evidence is shown suggesting that warming, per se, may be less harmful to coffee suitability than previously estimated, at least under the conditions of an adequate water supply. Finally, we discuss several mitigation strategies to improve crop performance in a changing world.
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Affiliation(s)
- Fábio M DaMatta
- Departamento de Biologia Vegetal , Universidade Federal Viçosa , 36570-900 Viçosa , Minas Gerais , Brazil
| | - Rodrigo T Avila
- Departamento de Biologia Vegetal , Universidade Federal Viçosa , 36570-900 Viçosa , Minas Gerais , Brazil
| | - Amanda A Cardoso
- Departamento de Biologia Vegetal , Universidade Federal Viçosa , 36570-900 Viçosa , Minas Gerais , Brazil
| | - Samuel C V Martins
- Departamento de Biologia Vegetal , Universidade Federal Viçosa , 36570-900 Viçosa , Minas Gerais , Brazil
| | - José C Ramalho
- Interações Planta-Ambiente & Biodiversidade Lab (Plant Stress & Biodiversity), Linking Landscape, Environment, Agriculture and Food, (LEAF), Departamento de Recursos Naturais, Ambiente e Território (DRAT), Instituto Superior de Agronomia (ISA) , Universidade de Lisboa (ULisboa) , Av. República , 2784-505 Oeiras , Portugal
- GeoBioTec, Faculdade de Ciências Tecnologia , Universidade NOVA de Lisboa , 2829-516 Caparica , Portugal
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Sperling O, Silva LCR, Tixier A, Théroux-Rancourt G, Zwieniecki MA. Temperature gradients assist carbohydrate allocation within trees. Sci Rep 2017; 7:3265. [PMID: 28607358 PMCID: PMC5468369 DOI: 10.1038/s41598-017-03608-w] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 05/17/2017] [Indexed: 11/11/2022] Open
Abstract
Trees experience two distinct environments: thermally-variable air and thermally-buffered soil. This generates intra-tree temperature gradients, which can affect carbon metabolism and water transport. In this study, we investigated whether carbohydrate allocation within trees is assisted by temperature gradients. We studied pistachio (Pistacia integerrima) to determine: (1) temperature-induced variation in xylem sugar concentration in excised branches; (2) changes in carbon allocation in young trees under simulated spring and fall conditions; and (3) seasonal variability of starch levels in mature orchard trees under field conditions. We found that warm branches had less sugar in perfused sap than cold branches due to increasing parenchyma storage. Simulated spring conditions promoted allocation of carbohydrates from cold roots to warm canopy and explained why starch levels surged in canopies of orchard trees during early spring. This driving force of sugar transport is interrupted in fall when canopies are colder than roots and carbohydrate redistribution is compartmentalized. On the basis of these findings, we propose a new mechanistic model of temperature-assisted carbohydrate allocation that links environmental cues and tree phenology. This data-enabled model provides insights into thermal "fine-tuning" of carbohydrate metabolism and a warning that the physiological performance of trees might be impaired by climatic changes.
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Affiliation(s)
- Or Sperling
- Institute of Plant Sciences, Agricultural Research Organization, Gilat, 85280 Negev Israel
| | - Lucas C. R. Silva
- Environmental Studies Program, Department of Geography, Institute of Ecology and Evolution, University of Oregon, Eugene, OR 97403 USA
| | - Aude Tixier
- Department of Plant Sciences, University of California Davis, Davis, CA 95616 USA
| | | | - Maciej A. Zwieniecki
- Department of Plant Sciences, University of California Davis, Davis, CA 95616 USA
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Rubio-Asensio JS, Bloom AJ. Inorganic nitrogen form: a major player in wheat and Arabidopsis responses to elevated CO2. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:2611-2625. [PMID: 28011716 DOI: 10.1093/jxb/erw465] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Critical for predicting the future of primary productivity is a better understanding of plant responses to rising atmospheric carbon dioxide (CO2) concentration. This review considers recent results on the role of the inorganic nitrogen (N) forms nitrate (NO3-) and ammonium (NH4+) in determining the responses of wheat and Arabidopsis to elevated atmospheric CO2 concentration. Here, we identify four key issues: (i) the possibility that different plant species respond similarly to elevated CO2 if one accounts for the N form that they are using; (ii) the major influence that plant-soil N interactions have on plant responses to elevated CO2; (iii) the observation that elevated CO2 may favor the uptake of one N form over others; and (iv) the finding that plants receiving NH4+ nutrition respond more positively to elevated CO2 than those receiving NO3- nutrition because elevated CO2 inhibits the assimilation of NO3- in shoots of C3 plants. We conclude that the form and amount of N available to plants from the rhizosphere and plant preferences for the different N forms are essential for predicting plant responses to elevated CO2.
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Affiliation(s)
- José S Rubio-Asensio
- Department of Irrigation, Centro de Edafología y Biología Aplicada del Segura, Espinardo, Murcia, Spain
| | - Arnold J Bloom
- Department of Plant Sciences, Mailstop 3, University of California at Davis, Davis, CA 95616, USA
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Silva LCR, Sun G, Zhu-Barker X, Liang Q, Wu N, Horwath WR. Tree growth acceleration and expansion of alpine forests: The synergistic effect of atmospheric and edaphic change. SCIENCE ADVANCES 2016; 2:e1501302. [PMID: 27652334 PMCID: PMC5020709 DOI: 10.1126/sciadv.1501302] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 08/08/2016] [Indexed: 05/30/2023]
Abstract
Many forest ecosystems have experienced recent declines in productivity; however, in some alpine regions, tree growth and forest expansion are increasing at marked rates. Dendrochronological analyses at the upper limit of alpine forests in the Tibetan Plateau show a steady increase in tree growth since the early 1900s, which intensified during the 1930s and 1960s, and have reached unprecedented levels since 1760. This recent growth acceleration was observed in small/young and large/old trees and coincided with the establishment of trees outside the forest range, reflecting a connection between the physiological performance of dominant species and shifts in forest distribution. Measurements of stable isotopes (carbon, oxygen, and nitrogen) in tree rings indicate that tree growth has been stimulated by the synergistic effect of rising atmospheric CO2 and a warming-induced increase in water and nutrient availability from thawing permafrost. These findings illustrate the importance of considering soil-plant-atmosphere interactions to understand current and anticipate future changes in productivity and distribution of forest ecosystems.
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Affiliation(s)
- Lucas C R Silva
- Environmental Studies Program and Department of Geography, University of Oregon, Eugene, OR 97403, USA
| | - Geng Sun
- Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Sichuan 610041, China
| | - Xia Zhu-Barker
- Department of Land, Air, and Water Resources, University of California, Davis, CA 95616, USA
| | - Qianlong Liang
- College of Life Science, Sichuan University, Sichuan 610041, China
| | - Ning Wu
- Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Sichuan 610041, China
| | - William R Horwath
- Department of Land, Air, and Water Resources, University of California, Davis, CA 95616, USA
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