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Akamatsu F, Oda K, Fujita A, Igi Y, Isogai A. Carbon stable isotopes of glucose during the degradation of rice by the koji fungus Aspergillus oryzae. Heliyon 2024; 10:e33664. [PMID: 39040413 PMCID: PMC11261792 DOI: 10.1016/j.heliyon.2024.e33664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2024] [Accepted: 06/25/2024] [Indexed: 07/24/2024] Open
Abstract
Glucose, a key component of traditional Japanese fermented foods, is derived from rice starch via saccharification by hydrolytic enzymes produced by Aspergillus oryzae. The δ 13C value of glucose reflects that of its rice source. However, the influence of saccharification parameters (glucose concentration, degradation temperature, and reaction time) on glucose δ 13C values is unclear. Here, we investigated the influence of saccharification on the δ 13C value of glucose. Our experiments showed a significant difference in the δ 1³C value of glucose (-27.0 ± 0.1 ‰) obtained from saccharification compared to the ingredient rice (-27.1 ± 0.1 ‰) and remaining solid residue (-27.1 ± 0.1 ‰); however, it did not differ significantly from those of rice koji (-27.0 ± 0.1 ‰) and steamed rice (-27.1 ± 0.1 ‰), despite all values being within 0.1 ‰. Notably, glucose concentration, degradation temperature, and reaction time did not significantly affect glucose δ 13C values. These findings demonstrate the remarkable preservation of glucose δ 13C values. The δ 13C values remain aligned with the original δ 13C value of the rice, even with up to 60 % degradation during A. oryzae saccharification. This persistence of the δ 13C value throughout the process offers a potential tool for authenticating the origin of rice-fermented beverages based on the δ 13C value of their glucose component.
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Affiliation(s)
- Fumikazu Akamatsu
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-0046, Japan
| | - Ken Oda
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-0046, Japan
| | - Akiko Fujita
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-0046, Japan
| | - Yukari Igi
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-0046, Japan
| | - Atsuko Isogai
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-0046, Japan
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Paolini M, Roncone A, Cucinotta L, Sciarrone D, Mondello L, Camin F, Moser S, Larcher R, Bontempo L. Aromatic Characterisation of Moscato Giallo by GC-MS/MS and Validation of Stable Isotopic Ratio Analysis of the Major Volatile Compounds. Biomolecules 2024; 14:710. [PMID: 38927113 PMCID: PMC11201454 DOI: 10.3390/biom14060710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2024] [Revised: 06/09/2024] [Accepted: 06/12/2024] [Indexed: 06/28/2024] Open
Abstract
Among the Moscato grapes, Moscato Giallo is a winegrape variety characterised by a high content of free and glycosylated monoterpenoids, which gives wines very intense notes of ripe fruit and flowers. The aromatic bouquet of Moscato Giallo is strongly influenced by the high concentration of linalool, geraniol, linalool oxides, limonene, α-terpineol, citronellol, hotrienol, diendiols, trans/cis-8-hydroxy linalool, geranic acid and myrcene, that give citrus, rose, and peach notes. Except for quali-quantitative analysis, no investigations regarding the isotopic values of the target volatile compounds in grapes and wines are documented in the literature. Nevertheless, the analysis of the stable isotope ratio represents a modern and powerful tool used by the laboratories responsible for official consumer protection, for food quality and genuineness assessment. To this aim, the aromatic compounds extracted from grapes and wine were analysed both by GC-MS/MS, to define the aroma profiles, and by GC-C/Py-IRMS, for a preliminary isotope compound-specific investigation. Seventeen samples of Moscato Giallo grapes were collected during the harvest season in 2021 from two Italian regions renowned for the cultivation of this aromatic variety, Trentino Alto Adige and Veneto, and the corresponding wines were produced at micro-winery scale. The GC-MS/MS analysis confirmed the presence of the typical terpenoids both in glycosylated and free forms, responsible for the characteristic aroma of the Moscato Giallo variety, while the compound-specific isotope ratio analysis allowed us to determine the carbon (δ13C) and hydrogen (δ2H) isotopic signatures of the major volatile compounds for the first time.
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Affiliation(s)
- Mauro Paolini
- Fondazione Edmund Mach, Via Mach 1, 38098 San Michele all’Adige, Italy; (A.R.); (L.C.); (F.C.); (S.M.); (R.L.); (L.B.)
| | - Alberto Roncone
- Fondazione Edmund Mach, Via Mach 1, 38098 San Michele all’Adige, Italy; (A.R.); (L.C.); (F.C.); (S.M.); (R.L.); (L.B.)
| | - Lorenzo Cucinotta
- Fondazione Edmund Mach, Via Mach 1, 38098 San Michele all’Adige, Italy; (A.R.); (L.C.); (F.C.); (S.M.); (R.L.); (L.B.)
- Messina Institute of Technology, Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, Former Veterinary School, University of Messina, Viale G. Palatucci snc, 98168 Messina, Italy; (D.S.); (L.M.)
| | - Danilo Sciarrone
- Messina Institute of Technology, Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, Former Veterinary School, University of Messina, Viale G. Palatucci snc, 98168 Messina, Italy; (D.S.); (L.M.)
| | - Luigi Mondello
- Messina Institute of Technology, Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, Former Veterinary School, University of Messina, Viale G. Palatucci snc, 98168 Messina, Italy; (D.S.); (L.M.)
- Chromaleont s.r.l., Messina Institute of Technology, Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, Former Veterinary School, University of Messina, Viale G. Palatucci snc, 98168 Messina, Italy
| | - Federica Camin
- Fondazione Edmund Mach, Via Mach 1, 38098 San Michele all’Adige, Italy; (A.R.); (L.C.); (F.C.); (S.M.); (R.L.); (L.B.)
- Center Agriculture Food Environment (C3A), University of Trento, Via Mach 1, 38010 San Michele all’Adige, Italy
| | - Sergio Moser
- Fondazione Edmund Mach, Via Mach 1, 38098 San Michele all’Adige, Italy; (A.R.); (L.C.); (F.C.); (S.M.); (R.L.); (L.B.)
| | - Roberto Larcher
- Fondazione Edmund Mach, Via Mach 1, 38098 San Michele all’Adige, Italy; (A.R.); (L.C.); (F.C.); (S.M.); (R.L.); (L.B.)
| | - Luana Bontempo
- Fondazione Edmund Mach, Via Mach 1, 38098 San Michele all’Adige, Italy; (A.R.); (L.C.); (F.C.); (S.M.); (R.L.); (L.B.)
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Rädecker N, Escrig S, Spangenberg JE, Voolstra CR, Meibom A. Coupled carbon and nitrogen cycling regulates the cnidarian-algal symbiosis. Nat Commun 2023; 14:6948. [PMID: 37914705 PMCID: PMC10620199 DOI: 10.1038/s41467-023-42579-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 10/16/2023] [Indexed: 11/03/2023] Open
Abstract
Efficient nutrient recycling underpins the ecological success of cnidarian-algal symbioses in oligotrophic waters. In these symbioses, nitrogen limitation restricts the growth of algal endosymbionts in hospite and stimulates their release of photosynthates to the cnidarian host. However, the mechanisms controlling nitrogen availability and their role in symbiosis regulation remain poorly understood. Here, we studied the metabolic regulation of symbiotic nitrogen cycling in the sea anemone Aiptasia by experimentally altering labile carbon availability in a series of experiments. Combining 13C and 15N stable isotope labeling experiments with physiological analyses and NanoSIMS imaging, we show that the competition for environmental ammonium between the host and its algal symbionts is regulated by labile carbon availability. Light regimes optimal for algal photosynthesis increase carbon availability in the holobiont and stimulate nitrogen assimilation in the host metabolism. Consequently, algal symbiont densities are lowest under optimal environmental conditions and increase toward the lower and upper light tolerance limits of the symbiosis. This metabolic regulation promotes efficient carbon recycling in a stable symbiosis across a wide range of environmental conditions. Yet, the dependence on resource competition may favor parasitic interactions, explaining the instability of the cnidarian-algal symbiosis as environmental conditions in the Anthropocene shift towards its tolerance limits.
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Affiliation(s)
- Nils Rädecker
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
| | - Stéphane Escrig
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Jorge E Spangenberg
- Institute of Earth Surface Dynamics, University of Lausanne, Lausanne, Switzerland
| | | | - Anders Meibom
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
- Center for Advanced Surface Analysis, Institute of Earth Sciences, University of Lausanne, Lausanne, Switzerland
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Akamatsu F, Igi Y, Fujita A, Yamada O, Okuda M. Carbon stable isotopic compositions of glucose and ethanol in sake after simultaneous saccharification and fermentation processes. Food Chem 2023; 424:136372. [PMID: 37236076 DOI: 10.1016/j.foodchem.2023.136372] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 04/29/2023] [Accepted: 05/11/2023] [Indexed: 05/28/2023]
Abstract
The carbon stable isotopic composition of glucose is transferred to that of ethanol during the simultaneous saccharification and fermentation processes of sake production. However, there is limited information regarding carbon isotope discrimination between the ingredient rice and the sake components. Our fermentation experiments show that the carbon stable isotopic composition of rice is intermediate between those of glucose and ethanol in sake and do not differ significantly from those of rice koji and sake lees. Carbon isotope discrimination from rice to ethanol and from glucose to ethanol is 0.9 ± 0.1‰ (mean ± standard deviation, n = 18) and 1.9 ± 0.2‰, respectively. This is approximately half of the isotope discrimination observed in grape wine due to the saccharification process during sake manufacture. Carbon isotope discrimination from ingredient rice to sake components provides valuable insights for the manufacturing process and the authentication of sake.
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Affiliation(s)
- Fumikazu Akamatsu
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan.
| | - Yukari Igi
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
| | - Akiko Fujita
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
| | - Osamu Yamada
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
| | - Masaki Okuda
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
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Spangenberg JE, Zufferey V. Soil management affects carbon and nitrogen concentrations and stable isotope ratios in vine products. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 873:162410. [PMID: 36842594 DOI: 10.1016/j.scitotenv.2023.162410] [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: 10/25/2022] [Revised: 02/13/2023] [Accepted: 02/18/2023] [Indexed: 06/18/2023]
Abstract
Weeds reduce vineyard productivity and affect grape quality by competing with grapevines (Vitis vinifera L.) for water and nutrients. The increased banning of herbicides has prompted the evaluation of alternative soil management strategies. Cover cropping seems to be the best alternative for weed management. However, it may impact vine growth, grape yield, and quality. Quantitative studies on these changes are scarce. Our study aimed to investigate the combined effect of grass cover and water availability on vines of three cultivars, the white Chasselas and Petite Arvine and the red Pinot noir field-grown under identical climatic and pedological conditions and grafted onto the same rootstock. Soil management and irrigation experiments were performed during the 2020-2021 seasons. Two extreme soil management practices were established in the vineyard, based on 100 % bare soil (BS) by the application of herbicides with glufosinate or glyphosate as active ingredients and 100 % grass-covered soil (GS) by cover cropping with a mixture of plant species. Two water statuses were imposed by drip irrigation (DI) and no irrigation (NI). The level of vine-weed competition for water and nitrogen (N) was assessed in the vine, must, and wine solid residues (WSRs) by comparing measurements, i.e., the yeast assimilable N content, C/NWSR, carbon and N isotope ratios (δ13Cgrape-sugars, δ13CWSR, and δ15NWSR) among the different treatments (BS-DI, BS-NI, GS-DI, GS-NI). The increase in the δ13Cgrape-sugars and δ13CWSR values with increasing plant water deficit mimicked the observations in irrigation experiments on BS. The NWSR content and δ15NWSR values decreased with water stress and much more strongly in vines on GS. The dramatic N deficit in rainfed vines on GS could be alleviated with irrigation. The present study provides insights from chemical and stable isotope analyses into the potential impact of cover cropping in vineyards in the context of the banning of herbicides in a time of global water scarcity due to climate change.
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Affiliation(s)
- Jorge E Spangenberg
- Institute of Earth Surface Dynamics (IDYST), University of Lausanne, CH-1015 Lausanne, Switzerland.
| | - Vivian Zufferey
- Research Center of Viticulture, Agroscope, CH-1009 Pully, Switzerland
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Akamatsu F, Shimizu H, Igi Y, Kamada A, Koyama K, Yamada O, Goto-Yamamoto N. Prediction method for determining the carbon stable isotopic composition of berry sugars in the original must of Chardonnay wines. Food Chem 2022; 369:130854. [PMID: 34450515 DOI: 10.1016/j.foodchem.2021.130854] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 07/14/2021] [Accepted: 08/09/2021] [Indexed: 01/19/2023]
Abstract
The carbon stable isotopic composition, as indicated by the δ13C value, of wine ethanol is inherited from berry sugars, but little is known about the variation in sugar δ13C values of Japanese grapes relative to overseas grapes. This study found a large variation in sugar δ13C values of Chardonnay grapes grown in Japan (-27.2 ± 0.9‰, mean ± standard deviation, n = 33), with sugar δ13C values depending on the δ13C values and content of monosaccharides. After complete fermentation, the carbon isotope discrimination between berry sugars and wine ethanol was 1.5 ± 0.1‰. Ethanol δ13C values and carbon isotope discrimination enabled prediction of sugar δ13C values in the original must. Imported wines had higher sugar δ13C values than those of wines made from Japanese grapes, suggesting drier overseas viticulture conditions. The determination of sugar δ13C values in grape berries provides valuable information for viticulture and wine authentication.
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Affiliation(s)
- Fumikazu Akamatsu
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan.
| | - Hideaki Shimizu
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
| | - Yukari Igi
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
| | - Aya Kamada
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
| | - Kazuya Koyama
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
| | - Osamu Yamada
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
| | - Nami Goto-Yamamoto
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
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Akamatsu F, Fujii T, Igi Y, Fujita A, Yamada O, Isogai A. Different carbon isotopic compositions of CO2 in sparkling sake using natural and exogenous carbonation methods. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.104474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Moehring MJ, Harrington PDB. Analysis of Wine and Its Use in Tracing the Origin of Grape Cultivation. Crit Rev Anal Chem 2021; 52:1901-1912. [PMID: 34061694 DOI: 10.1080/10408347.2021.1925082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The concentrations of elemental and volatile components in wine and the effect of biological, meteorological, and anthropogenic factors on their levels are important for authentication and quality assurance. Sample preparation for atomic absorption and inductively coupled plasma spectrometries for elemental analysis as well as chromatographic and electronic nose (EN) analytical methods for volatile compounds are reviewed. The International Organization of Vine and Wine (OIV) and countries that produce and import wine developed methods and set limits on metal abundance to ensure that all metal concentrations are well below toxic threshold limits. With the use of data analysis tools, elemental analysis can enable wines to be traced back to their geographic region of origin. When paired with volatile and isotopic analysis the accuracy of this authentication greatly improves. Tracing studies are reviewed to demonstrate the capabilities of these analyses.
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Affiliation(s)
- Michael J Moehring
- Departmentof Chemistry & Biochemistry, Ohio University, Athens, Ohio, USA
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Spangenberg JE, Schweizer M, Zufferey V. Carbon and nitrogen stable isotope variations in leaves of two grapevine cultivars (Chasselas and Pinot noir): Implications for ecophysiological studies. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 163:45-54. [PMID: 33812226 DOI: 10.1016/j.plaphy.2021.03.048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 03/22/2021] [Indexed: 06/12/2023]
Abstract
We investigated the within- and between-leaf variability in the carbon and nitrogen isotope composition (δ13C and δ15N) and total nitrogen (TN) content in two grapevine cultivars (Vitis vinifera cv. Chasselas and Pinot noir) field-grown under rain-fed conditions. The within-leaf variability was studied in discs sampled from base-to-tip and left and right regions from the margin to midrib. The intra- and interplant variability was studied by comparing leaves at different positions along the shoot (basal, median, apical). In leaves from both cultivars, a decrease in δ13C from base to tip was observed, which is in line with an upward gradient of stomatal density and chlorophyll concentration. Less important, but still significant differences were observed between the right and left discs. The leaf TN and δ15N values differed between cultivars, showed smaller variations than the δ13C values, and no systematic spatial trends. The intraleaf variations in δ13C, δ15N, and TN suggest that stomatal behavior, CO2 fixation, chlorophyll concentrations, and the chemical composition of leaf components were heterogeneous in the leaves. At the canopy scale, the apical leaves had less 13C and more 15N and TN than the basal leaves, indicating differences in their photosynthetic capacity and remobilizations from old, senescing leaves to younger leaves. Overall, this study demonstrates patchiness in the δ13C and δ15N values of grapevine leaves and species-specificity of the nitrogen assimilation and 15N fractionation. These findings suggest that care must be taken not to overinterpret foliar δ13C and δ15N values in studies based on fragmented material as markers of physiological and biochemical responses to environmental factors.
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Affiliation(s)
- Jorge E Spangenberg
- Institute of Earth Surface Dynamics (IDYST), University of Lausanne, CH-1015, Lausanne, Switzerland.
| | - Marc Schweizer
- Institute of Earth Surface Dynamics (IDYST), University of Lausanne, CH-1015, Lausanne, Switzerland
| | - Vivian Zufferey
- Institute of Plant Production Sciences (IPV), Agroscope, CH-1009, Pully, Switzerland
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Spangenberg JE, Schweizer M, Zufferey V. Shifts in carbon and nitrogen stable isotope composition and epicuticular lipids in leaves reflect early water-stress in vineyards. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 739:140343. [PMID: 32758968 DOI: 10.1016/j.scitotenv.2020.140343] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/12/2020] [Accepted: 06/16/2020] [Indexed: 06/11/2023]
Abstract
Changes in leaf carbon and nitrogen isotope composition (δ13C and δ15N values) and the accumulation of epicuticular lipids have been associated with plant responses to water stress. We investigated their potential use as indicators of early plant water deficit in two grapevine (Vitis vinifera L.) cultivars, Chasselas and Pinot noir, that were field-grown under well-watered and water-deficient conditions. We tested the hypothesis that the bulk δ13C and δ15N values and the concentrations of epicuticular fatty acids may change in leaves of similar age with the soil water availability. For this purpose, leaves were sampled at the same position in the canopy at different times (phenological stages) during the 2014 growing season. Bulk dry matter of young leaves from flowering to veraison had higher δ13C values, higher total nitrogen content, and lower δ15N values than old leaves. In both cultivars, δ15N values were strongly correlated with plant water deficiency, demonstrating their integration of the plant water stress response. δ13C values recorded the water deficiency only in those plants that had not received foliar organic fertilization. The soil water deficiency triggered the accumulation of C>26 fatty acids in the cuticular waxes. The compound-specific isotope analysis (CSIA) of fatty acids from old leaves showed an increase in δ13C among the C16-C22 chains, including stress signaling linoleic and linolenic acids. Our results provide evidence for leaf 13C-enrichment, 15N-depletion, and enhanced FA-chain elongation and epicuticular accumulation in the grapevine response to water stress. The leaf δ13C and δ15N values, and the concentration of epicuticular fatty acids can be used as reliable and sensitive indicators of plant water deficit even when the level of water stress is low to moderate. They could also be used, particularly the more cost-efficient δ13C and δ15N measurements, for periodic biogeochemical mapping of the plant water availability at the vineyard and regional scale.
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Affiliation(s)
- Jorge E Spangenberg
- Institute of Earth Surface Dynamics (IDYST), University of Lausanne, CH-1015 Lausanne, Switzerland.
| | - Marc Schweizer
- Institute of Earth Surface Dynamics (IDYST), University of Lausanne, CH-1015 Lausanne, Switzerland
| | - Vivian Zufferey
- Institute of Plant Production Sciences (IPV), Agroscope, CH-1009 Pully, Switzerland
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Verdenal T, Spangenberg JE, Zufferey V, Dienes-Nagy Á, Viret O, van Leeuwen C, Spring JL. Impact of crop load on nitrogen uptake and reserve mobilisation in Vitis vinifera. FUNCTIONAL PLANT BIOLOGY : FPB 2020; 47:744-756. [PMID: 32527367 DOI: 10.1071/fp20010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 03/16/2020] [Indexed: 06/11/2023]
Abstract
Nitrogen deficit affects both crop production and composition, particularly in crops requiring an optimal fruit N content for aroma development. The adaptation of cultural practices to improve N use efficiency (NUE) (i.e. N uptake, assimilation and partitioning) is a priority for the sustainable production of high-quality crops. A trial was set on potted grapevines (Vitis vinifera L. cv. Chasselas) to investigate the potential of crop limitation (via bunch thinning) to control plant NUE and ultimately fruit N composition at harvest. A large crop load gradient was imposed by bunch thinning (0.5-2.5 kg m-2) and N traceability in the plant was realised with an isotope-labelling method (10 atom % 15N foliar urea). The results indicate that the mobilisation of root reserves plays a major role in the balance of fruit N content. Fertiliser N uptake and assimilation appeared to be strongly stimulated by high-yielding conditions. Fertilisation largely contributed to fulfilling the high fruit N demand while limiting the mobilisation of root reserves under high yield conditions. Plants were able to modulate root N reserve mobilisation and fertiliser N uptake in function of the crop load, thus maintaining a uniform N concentration in fruits. However, the fruit free amino N profile was modified, which potentially altered the fruit aromas. These findings highlight the great capacity of plants to adapt their N metabolism to constraints, crop thinning in this case. This confirms the possibility of monitoring NUE by adapting cultural practices.
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Affiliation(s)
- Thibaut Verdenal
- Agroscope Institute, Avenue Rochettaz 21, 1009 Pully, Switzerland; and Corresponding author.
| | - Jorge E Spangenberg
- Institute of Earth Surface Dynamics, University of Lausanne, 1015 Lausanne, Switzerland
| | - Vivian Zufferey
- Agroscope Institute, Avenue Rochettaz 21, 1009 Pully, Switzerland
| | | | - Olivier Viret
- Direction générale de l'agriculture, de la viticulture et des affaires vétérinaires, 1110 Morges, Switzerland
| | - Cornelis van Leeuwen
- Ecophysiologie et Génomique Fonctionnelle de la Vigne (EGFV), Bordeaux Sciences Agro, Institut national de la recherche pour l'agriculture, l'alimentation et l'environnement (INRAE), Univ. Bordeaux, Institut des Sciences de la Vigne et du Vin (ISVV), 33882 Villenave d'Ornon, France
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Akamatsu F, Igi Y, Fujita A. Separation and Purification of Glucose in Sake for Carbon Stable Isotope Analysis. FOOD ANAL METHOD 2020. [DOI: 10.1007/s12161-020-01704-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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