Chemical diversity and molecular signature of soil humic fractions used as proxies of soil quality under contrasted tillage management
16 pág.- 2 fig.- 4 tablas.- 52 referencias
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Universia
2021-03-13
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| Subjects: | Fulvic acids, High resolution mass spectrometry, Humic acids, Soil management, Soil organic carbon, |
| Online Access: | http://hdl.handle.net/10261/236635 http://dx.doi.org/10.13039/501100003329 |
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Fulvic acids High resolution mass spectrometry Humic acids Soil management Soil organic carbon Fulvic acids High resolution mass spectrometry Humic acids Soil management Soil organic carbon |
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Fulvic acids High resolution mass spectrometry Humic acids Soil management Soil organic carbon Fulvic acids High resolution mass spectrometry Humic acids Soil management Soil organic carbon Panettieri, Marco Jiménez González, M. A. de Sosa, Laura L. Almendros Martín, Gonzalo Madejón, Engracia Chemical diversity and molecular signature of soil humic fractions used as proxies of soil quality under contrasted tillage management |
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16 pág.- 2 fig.- 4 tablas.- 52 referencias |
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Ministerio de Ciencia, Innovación y Universidades (España) |
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Ministerio de Ciencia, Innovación y Universidades (España) Panettieri, Marco Jiménez González, M. A. de Sosa, Laura L. Almendros Martín, Gonzalo Madejón, Engracia |
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Fulvic acids High resolution mass spectrometry Humic acids Soil management Soil organic carbon |
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Panettieri, Marco Jiménez González, M. A. de Sosa, Laura L. Almendros Martín, Gonzalo Madejón, Engracia |
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Panettieri, Marco |
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Chemical diversity and molecular signature of soil humic fractions used as proxies of soil quality under contrasted tillage management |
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Chemical diversity and molecular signature of soil humic fractions used as proxies of soil quality under contrasted tillage management |
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Chemical diversity and molecular signature of soil humic fractions used as proxies of soil quality under contrasted tillage management |
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Chemical diversity and molecular signature of soil humic fractions used as proxies of soil quality under contrasted tillage management |
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Chemical diversity and molecular signature of soil humic fractions used as proxies of soil quality under contrasted tillage management |
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chemical diversity and molecular signature of soil humic fractions used as proxies of soil quality under contrasted tillage management |
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Universia |
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2021-03-13 |
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http://hdl.handle.net/10261/236635 http://dx.doi.org/10.13039/501100003329 |
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dig-irnas-es-10261-2366352021-06-30T12:40:42Z Chemical diversity and molecular signature of soil humic fractions used as proxies of soil quality under contrasted tillage management Diversidad química y patrón molecular de las fracciones húmicas como indicadoras de la calidad del suelo bajo distintos sistemas de laboreo Panettieri, Marco Jiménez González, M. A. de Sosa, Laura L. Almendros Martín, Gonzalo Madejón, Engracia Ministerio de Ciencia, Innovación y Universidades (España) Ministerio de Economía y Competitividad (España) Panettieri, Marco [0000-0003-4769-8955] Jiménez González, M. A. [0000-0001-7318-6051] de Sosa, Laura L. [0000-0002-4156-1897] Almendros Martín, Gonzalo [0000-0001-6794-9825] Madejón, Engracia [0000-0002-6282-7041] Fulvic acids High resolution mass spectrometry Humic acids Soil management Soil organic carbon 16 pág.- 2 fig.- 4 tablas.- 52 referencias [EN]: Increasing food production while avoiding the progressive degradation of agricultural soils has become one of the major challenges at a global level. In consequence, the development of sustainable tillage methodologies or cultivation strategies is an important subject of current research. In fact, it has been observed that the implementation of reduced tillage (RT) vs. traditional tillage (TT) in the long term not only improves soil physicochemical properties but also global soil quality in terms of soil health. In particular, the increase of the soil organic carbon (SOC) content under RT conditions is one of the most important factors, but there is little information about the chemical composition and humification level of this carbon, and thus about its persistence at long-term. This is of particular importance considering the policies of carbon sequestration and climate change mitigation, such as the “4 per 1000” initiative. In this study, molecular-level characterization of the humic acid (HA) and fulvic acid (FA) fractions isolated from a soil after 19 years under RT and TT practices was carried out. This study would provide objective descriptors of the impact of these two tillage practices in the chemical composition of the resulting SOC. With this purpose, the potential of Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FTICR-MS) for assessing changes in the molecular assemblages released from the humic fractions (HA and FA) was examined. The results showed enhanced diversity and chemical richness (expressed as number of molecular formulas) in the composition of SOC under RT. Different tillage-specific compound classes were associated with both tillage practices. As a whole, the humic fraction showed a higher proportion of molecular formulas for lipid and hydroaromatic families in the case of RT compared to TT, while the same fraction under TT showed a greater richness of oxidized protein-derived formulas than RT. In the case of FAs, a similar pattern was observed for hydroaromatic and protein-derived formulas, but the proportion of molecular formulas assigned to unsaturated lipids was higher in TT than in RT. In addition, increased number of formulas for aromatic and condensed aromatic compounds was observed in FAs under TT respect to RT. © 2021, Universia. All rights reserved. [ES]: El incremento en la producción de alimentos evitando los procesos de degradación de los suelos agrícolas se ha convertido en uno de los mayores retos a nivel global. Por esta razón, el desarrollo de nuevas técnicas de laboreo o estrategias de cultivo sostenible es uno de los principales campos de investigación en agricultura. La implementación de estrategias como el laboreo reducido (RT) frente al laboreo tradicional (TT) mejoran ciertas propiedades físico-químicas del suelo. Una de estas propiedades de especial relevancia es el contenido de carbono orgánico del suelo (SOC), que se ve favorecido en términos de cantidad bajo condiciones de RT. Sin embargo, se tiene poca información acerca de la composición química de este carbono y su persistencia a largo plazo. Esta información es particularmente importante considerando las políticas de secuestro de carbono y mitigación del cambio climático, como la iniciativa 4 por 1000. En este estudio, se realizó una caracterización química comparativa de las fracciones de ácidos húmicos y fúlvicos aisladas de la materia orgánica de un suelo proveniente de un experimento de campo en el que se han comparado dos tipos de laboreo (RT y TT) durante 19 años. Para la caracterización química se empleó la espectrometría de resonancia ciclotrónica por transformada de Fourier (FTICR-MS). Los resultados mostraron una mayor diversidad y riqueza química en la SOC en el tratamiento RT. La fracción húmica mostró una mayor proporción de compuestos de naturaleza lipídica e hidroaromática en el caso de RT, mientras que la misma fracción en suelos bajo TT mostró una mayor riqueza en compuestos más oxidados de naturaleza proteica. En el caso de los ácidos fúlvicos, se observó una tendencia similar a la de los húmicos; sin embargo, en este caso la proporción de lípidos insaturados fue mayor en los suelos bajo TT que en los suelos RT. Además, se observó un ligero aumento en el número de compuestos con carácter aromático y aromático condensado en los ácidos fúlvicos extraídos en suelos bajo TT en comparación con aquellos extraídos en los suelos bajo RT Marco Panettieri acknowledges the Spanish Ministry of Science, Innovation and Universities for his post-doctoral fellowship number IJCI-2016-27693. Marco Panettieri thanks Prof. Patrick G. Hatcher of the Department of Chemistry and Biochemistry of the Old Dominion University (Norfolk, VA, USA) for providing access to the FTICR-MS of the College of Science Major Instrumentation Cluster (COSMIC). Marco A. Jiménez-González thanks the Spanish Ministry of Economy and Competitiveness (MINECO) for funding his pre-doctoral FPI fellowship (BES-2014-069238). Peer reviewed 2021-04-05T07:42:22Z 2021-04-05T07:42:22Z 2021-03-13 artículo http://purl.org/coar/resource_type/c_6501 Spanish Journal of Soil Science 11)1): 39-54 (2021) 2253-6574 http://hdl.handle.net/10261/236635 10.3232/SJSS.2021.V11.N1.04 http://dx.doi.org/10.13039/501100003329 en #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/BES-2014-069238 Publisher's version http://dx.doi.org/10.3232/SJSS.2021.V11.N1.04 Sí open Universia |