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  1. AU="Albert Gargallo‐Garriga"
  2. AU="Serwin, Natalia Maria"
  3. AU="La Rosa, Stefano"
  4. AU="Yin-Yin Xie"
  5. AU=White David P
  6. AU="Maria Teresa Viadero"
  7. AU="Wingeter, Márcia A"
  8. AU="Stein, Joshua D"
  9. AU="De Vecchis, Liana"
  10. AU="Chapman, Janet"
  11. AU="Umlai, Umm-Kulthum Ismail"
  12. AU="Reddi, Jyoti M"
  13. AU=Zeissig Sebastian
  14. AU="Valentini, Mariaconsuelo"

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  1. Artikel ; Online: Root exudate metabolomes change under drought and show limited capacity for recovery

    Albert Gargallo-Garriga / Catherine Preece / Jordi Sardans / Michal Oravec / Otmar Urban / Josep Peñuelas

    Scientific Reports, Vol 8, Iss 1, Pp 1-

    2018  Band 15

    Abstract: Abstract Root exudates comprise a large variety of compounds released by plants into the rhizosphere, including low-molecular-weight primary metabolites (particularly saccharides, amino acids and organic acids) and secondary metabolites (phenolics, ... ...

    Abstract Abstract Root exudates comprise a large variety of compounds released by plants into the rhizosphere, including low-molecular-weight primary metabolites (particularly saccharides, amino acids and organic acids) and secondary metabolites (phenolics, flavonoids and terpenoids). Changes in exudate composition could have impacts on the plant itself, on other plants, on soil properties (e.g. amount of soil organic matter), and on soil organisms. The effects of drought on the composition of root exudates, however, have been rarely studied. We used an ecometabolomics approach to identify the compounds in the exudates of Quercus ilex (holm oak) under an experimental drought gradient and subsequent recovery. Increasing drought stress strongly affected the composition of the exudate metabolome. Plant exudates under drought consisted mainly of secondary metabolites (71% of total metabolites) associated with plant responses to drought stress, whereas the metabolite composition under recovery shifted towards a dominance of primary metabolites (81% of total metabolites). These results strongly suggested that roots exude the most abundant root metabolites. The exudates were changed irreversibly by the lack of water under extreme drought conditions, and the plants could not recover.
    Schlagwörter Medicine ; R ; Science ; Q
    Thema/Rubrik (Code) 580
    Sprache Englisch
    Erscheinungsdatum 2018-08-01T00:00:00Z
    Verlag Nature Publishing Group
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  2. Artikel ; Online: Ecometabolomics of plant–herbivore and plant–fungi interactions

    Jordi Sardans / Albert Gargallo‐Garriga / Otmar Urban / Karel Klem / Petr Holub / Ivan A. Janssens / Tom W. N. Walker / Argus Pesqueda / Josep Peñuelas

    Ecosphere, Vol 12, Iss 9, Pp n/a-n/a (2021)

    a synthesis study

    2021  

    Abstract: Abstract The functional adaptive responses of higher plants to biotic interactions with herbivores and fungi have long been topics of research. One constraint to obtaining a comprehensive understanding of the most general plant responses, however, has ... ...

    Abstract Abstract The functional adaptive responses of higher plants to biotic interactions with herbivores and fungi have long been topics of research. One constraint to obtaining a comprehensive understanding of the most general plant responses, however, has been the difficulty of studying all plant functional shifts simultaneously due to analytical limitations. Now this is possible with the advent of metabolomics. Using 151 records from the WEB of SCIENCE database, we have analyzed the development and application of metabolomic profiles to ecological studies in the last two decades. We have used meta‐analysis and pathway enrichment analyses to assess the whole set of constitutive and inducible defenses. Constitutive defenses against herbivores were mainly based on a significant high level of the metabolism of several amino acids with parallel increases in the concentrations of flavones (phenolics) and saponins (glycosides). Inducible defenses, though, were mainly based on the increases in concentration of methyl‐ketone, pantothenate, and Coenzyme A. Butyrate metabolism and the mitochondrial electron‐transport chain were upregulated, in agreement with previous reports that herbivory‐activated plant chemical defenses were mainly based on jasmonic acid, salicylic acid, and ethylene‐associated pathways. The metabolic responses/acclimations to pathogenic fungi were mainly linked with increases in aspartate and pyruvate metabolism, the transfer of acetyl groups within mitochondria, and the upregulation of branched‐chain amino acids degradation pathways. These responses/acclimations were accompanied by higher concentrations of the most important groups of secondary metabolites such as phenolics (anthocyanins, flavonoids), quinones, alkaloids, terpenoids, and polyamines and other compounds related to antistress mechanisms such as proline. The leaves of mycorrhized plants accumulated nucleotide sugars, sphingolipids, and methylhistidine. These responses were associated with maintaining the integrity of plant cell membranes ...
    Schlagwörter biotic relationships ; ecometabolomics ; Ecology ; QH540-549.5
    Thema/Rubrik (Code) 580
    Sprache Englisch
    Erscheinungsdatum 2021-09-01T00:00:00Z
    Verlag Wiley
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  3. Artikel ; Online: Different “metabolomic niches” of the highly diverse tree species of the French Guiana rainforests

    Albert Gargallo-Garriga / Jordi Sardans / Victor Granda / Joan Llusià / Guille Peguero / Dolores Asensio / Romà Ogaya / Ifigenia Urbina / Leandro Van Langenhove / Lore T. Verryckt / Jérome Chave / Elodie A. Courtois / Clément Stahl / Oriol Grau / Karel Klem / Otmar Urban / Ivan A. Janssens / Josep Peñuelas

    Scientific Reports, Vol 10, Iss 1, Pp 1-

    2020  Band 10

    Abstract: Abstract Tropical rainforests harbor a particularly high plant diversity. We hypothesize that potential causes underlying this high diversity should be linked to distinct overall functionality (defense and growth allocation, anti-stress mechanisms, ... ...

    Abstract Abstract Tropical rainforests harbor a particularly high plant diversity. We hypothesize that potential causes underlying this high diversity should be linked to distinct overall functionality (defense and growth allocation, anti-stress mechanisms, reproduction) among the different sympatric taxa. In this study we tested the hypothesis of the existence of a metabolomic niche related to a species-specific differential use and allocation of metabolites. We tested this hypothesis by comparing leaf metabolomic profiles of 54 species in two rainforests of French Guiana. Species identity explained most of the variation in the metabolome, with a species-specific metabolomic profile across dry and wet seasons. In addition to this “homeostatic” species-specific metabolomic profile significantly linked to phylogenetic distances, also part of the variance (flexibility) of the metabolomic profile was explained by season within a single species. Our results support the hypothesis of the high diversity in tropical forest being related to a species-specific metabolomic niche and highlight ecometabolomics as a tool to identify this species functional diversity related and consistent with the ecological niche theory.
    Schlagwörter Medicine ; R ; Science ; Q
    Thema/Rubrik (Code) 580 ; 590
    Sprache Englisch
    Erscheinungsdatum 2020-04-01T00:00:00Z
    Verlag Nature Publishing Group
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  4. Artikel ; Online: High foliar K and P resorption efficiencies in old‐growth tropical forests growing on nutrient‐poor soils

    Ifigenia Urbina / Oriol Grau / Jordi Sardans / Olga Margalef / Guillermo Peguero / Dolores Asensio / Joan LLusià / Romà Ogaya / Albert Gargallo‐Garriga / Leandro Van Langenhove / Lore T. Verryckt / Elodie A. Courtois / Clément Stahl / Jennifer L. Soong / Jerome Chave / Bruno Hérault / Ivan A. Janssens / Emma Sayer / Josep Peñuelas

    Ecology and Evolution, Vol 11, Iss 13, Pp 8969-

    2021  Band 8982

    Abstract: Abstract Resorption is the active withdrawal of nutrients before leaf abscission. This mechanism represents an important strategy to maintain efficient nutrient cycling; however, resorption is poorly characterized in old‐growth tropical forests growing ... ...

    Abstract Abstract Resorption is the active withdrawal of nutrients before leaf abscission. This mechanism represents an important strategy to maintain efficient nutrient cycling; however, resorption is poorly characterized in old‐growth tropical forests growing in nutrient‐poor soils. We investigated nutrient resorption from leaves in 39 tree species in two tropical forests on the Guiana Shield, French Guiana, to investigate whether resorption efficiencies varied with soil nutrient, seasonality, and species traits. The stocks of P in leaves, litter, and soil were low at both sites, indicating potential P limitation of the forests. Accordingly, mean resorption efficiencies were higher for P (35.9%) and potassium (K; 44.6%) than for nitrogen (N; 10.3%). K resorption was higher in the wet (70.2%) than in the dry (41.7%) season. P resorption increased slightly with decreasing total soil P; and N and P resorptions were positively related to their foliar concentrations. We conclude that nutrient resorption is a key plant nutrition strategy in these old‐growth tropical forests, that trees with high foliar nutrient concentration reabsorb more nutrient, and that nutrients resorption in leaves, except P, are quite decoupled from nutrients in the soil. Seasonality and biochemical limitation played a role in the resorption of nutrients in leaves, but species‐specific requirements obscured general tendencies at stand and ecosystem level.
    Schlagwörter nitrogen ; nutrient ; phosphorus ; potassium ; resorption ; soil ; Ecology ; QH540-549.5
    Thema/Rubrik (Code) 580
    Sprache Englisch
    Erscheinungsdatum 2021-07-01T00:00:00Z
    Verlag Wiley
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  5. Artikel ; Online: 31 P-NMR Metabolomics Revealed Species-Specific Use of Phosphorous in Trees of a French Guiana Rainforest

    Albert Gargallo-Garriga / Jordi Sardans / Joan Llusià / Guille Peguero / Dolores Asensio / Romà Ogaya / Ifigenia Urbina / Leandro Van Langenhove / Lore T. Verryckt / Elodie A. Courtois / Clément Stahl / Oriol Grau / Otmar Urban / Ivan A. Janssens / Pau Nolis / Miriam Pérez-Trujillo / Teodor Parella / Josep Peñuelas

    Molecules, Vol 25, Iss 3960, p

    2020  Band 3960

    Abstract: Productivity of tropical lowland moist forests is often limited by availability and functional allocation of phosphorus (P) that drives competition among tree species and becomes a key factor in determining forestall community diversity. We used non- ... ...

    Abstract Productivity of tropical lowland moist forests is often limited by availability and functional allocation of phosphorus (P) that drives competition among tree species and becomes a key factor in determining forestall community diversity. We used non-target 31 P-NMR metabolic profiling to study the foliar P-metabolism of trees of a French Guiana rainforest. The objective was to test the hypotheses that P-use is species-specific, and that species diversity relates to species P-use and concentrations of P-containing compounds, including inorganic phosphates, orthophosphate monoesters and diesters, phosphonates and organic polyphosphates. We found that tree species explained the 59% of variance in 31 P-NMR metabolite profiling of leaves. A principal component analysis showed that tree species were separated along PC 1 and PC 2 of detected P-containing compounds, which represented a continuum going from high concentrations of metabolites related to non-active P and P-storage, low total P concentrations and high N:P ratios, to high concentrations of P-containing metabolites related to energy and anabolic metabolism, high total P concentrations and low N:P ratios. These results highlight the species-specific use of P and the existence of species-specific P-use niches that are driven by the distinct species-specific position in a continuum in the P-allocation from P-storage compounds to P-containing molecules related to energy and anabolic metabolism.
    Schlagwörter 31 P-NMR metabolic profiling ; Iceland ; tropical lowland ; P-containing compounds ; species-specific P-use niches ; Organic chemistry ; QD241-441
    Sprache Englisch
    Erscheinungsdatum 2020-08-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  6. Artikel ; Online: Long-term fertilization determines different metabolomic profiles and responses in saplings of three rainforest tree species with different adult canopy position.

    Albert Gargallo-Garriga / S Joseph Wright / Jordi Sardans / Míriam Pérez-Trujillo / Michal Oravec / Kristýna Večeřová / Otmar Urban / Marcos Fernández-Martínez / Teodor Parella / Josep Peñuelas

    PLoS ONE, Vol 12, Iss 5, p e

    2017  Band 0177030

    Abstract: Tropical rainforests are frequently limited by soil nutrient availability. However, the response of the metabolic phenotypic plasticity of trees to an increase of soil nutrient availabilities is poorly understood. We expected that increases in the ... ...

    Abstract Tropical rainforests are frequently limited by soil nutrient availability. However, the response of the metabolic phenotypic plasticity of trees to an increase of soil nutrient availabilities is poorly understood. We expected that increases in the ability of a nutrient that limits some plant processes should be detected by corresponding changes in plant metabolome profile related to such processes.We studied the foliar metabolome of saplings of three abundant tree species in a 15 year field NPK fertilization experiment in a Panamanian rainforest. The largest differences were among species and explained 75% of overall metabolome variation. The saplings of the large canopy species, Tetragastris panamensis, had the lowest concentrations of all identified amino acids and the highest concentrations of most identified secondary compounds. The saplings of the "mid canopy" species, Alseis blackiana, had the highest concentrations of amino acids coming from the biosynthesis pathways of glycerate-3P, oxaloacetate and α-ketoglutarate, and the saplings of the low canopy species, Heisteria concinna, had the highest concentrations of amino acids coming from the pyruvate synthesis pathways.The changes in metabolome provided strong evidence that different nutrients limit different species in different ways. With increasing P availability, the two canopy species shifted their metabolome towards larger investment in protection mechanisms, whereas with increasing N availability, the sub-canopy species increased its primary metabolism. The results highlighted the proportional distinct use of different nutrients by different species and the resulting different metabolome profiles in this high diversity community are consistent with the ecological niche theory.
    Schlagwörter Medicine ; R ; Science ; Q
    Thema/Rubrik (Code) 580
    Sprache Englisch
    Verlag Public Library of Science (PLoS)
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  7. Artikel ; Online: Impacts of Global Change on Mediterranean Forests and Their Services

    Josep Peñuelas / Jordi Sardans / Iolanda Filella / Marc Estiarte / Joan Llusià / Romà Ogaya / Jofre Carnicer / Mireia Bartrons / Albert Rivas-Ubach / Oriol Grau / Guille Peguero / Olga Margalef / Sergi Pla-Rabés / Constantí Stefanescu / Dolores Asensio / Catherine Preece / Lei Liu / Aleixandre Verger / Adrià Barbeta /
    Ander Achotegui-Castells / Albert Gargallo-Garriga / Dominik Sperlich / Gerard Farré-Armengol / Marcos Fernández-Martínez / Daijun Liu / Chao Zhang / Ifigenia Urbina / Marta Camino-Serrano / Maria Vives-Ingla / Benjamin D. Stocker / Manuela Balzarolo / Rossella Guerrieri / Marc Peaucelle / Sara Marañón-Jiménez / Kevin Bórnez-Mejías / Zhaobin Mu / Adrià Descals / Alejandro Castellanos / Jaume Terradas

    Forests, Vol 8, Iss 12, p

    2017  Band 463

    Abstract: The increase in aridity, mainly by decreases in precipitation but also by higher temperatures, is likely the main threat to the diversity and survival of Mediterranean forests. Changes in land use, including the abandonment of extensive crop activities, ... ...

    Abstract The increase in aridity, mainly by decreases in precipitation but also by higher temperatures, is likely the main threat to the diversity and survival of Mediterranean forests. Changes in land use, including the abandonment of extensive crop activities, mainly in mountains and remote areas, and the increases in human settlements and demand for more resources with the resulting fragmentation of the landscape, hinder the establishment of appropriate management tools to protect Mediterranean forests and their provision of services and biodiversity. Experiments and observations indicate that if changes in climate, land use and other components of global change, such as pollution and overexploitation of resources, continue, the resilience of many forests will likely be exceeded, altering their structure and function and changing, mostly decreasing, their capacity to continue to provide their current services. A consistent assessment of the impacts of the changes, however, remains elusive due to the difficulty of obtaining simultaneous and complete data for all scales of the impacts in the same forests, areas and regions. We review the impacts of climate change and other components of global change and their interactions on the terrestrial forests of Mediterranean regions, with special attention to their impacts on ecosystem services. Management tools for counteracting the negative effects of global change on Mediterranean ecosystem- services are finally discussed.
    Schlagwörter climate change ; drought ; global change ; mediterranean forests ; ecosystem services ; resilience ; management ; migration ; extinction ; diversity ; communities ; CO2 ; plant invasion ; Plant ecology ; QK900-989
    Thema/Rubrik (Code) 910
    Sprache Englisch
    Erscheinungsdatum 2017-11-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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