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Glomalins and their relationship with soil carbon

Colaborador(es): Ferrero Holtz, Esteban Waldemar. Universidad de Buenos Aires Facultad de Agronomía Departamento de Recursos Naturales y Ambiente Cátedra de Edafología.Av. San Martín 4453. 1417 Buenos Aires. Argentina | González, Mirta Graciela. Universidad de Buenos Aires Facultad de Agronomía Departamento de Recursos Naturales y Ambiente Cátedra de Edafología.Av. San Martín 4453. 1417 Buenos Aires. Argentina | Giuffré, Lidia L. Universidad de Buenos Aires Facultad de Agronomía Departamento de Recursos Naturales y Ambiente Cátedra de Edafología.Av. San Martín 4453. 1417 Buenos Aires. Argentina | Ciarlo, Esteban Ariel. Universidad de Buenos Aires Facultad de Agronomía Departamento de Recursos Naturales y Ambiente Cátedra de Edafología.Av. San Martín 4453. 1417 Buenos Aires. Argentina.
ISSN: 2221-1004.Tipo de material: Artículos y capítulos. Recurso electrónico.Tema(s): | GLOMALIN | GSRP | ARGENTINE SOILS | TOTAL ORGANIC CARBON | Recursos en línea: Haga clic para acceso en línea | LINK AL EDITOR En: International Journal of Applied Science and Technology Vol.6, no.2 (2016), 5 p., grafs.Resumen: The activity of bacteria and fungi is a relevant issue in the process of humification of organic matter and physical stability of the soil, standing out the role of arbuscular mycorrhizal fungi (AMF). AMF synthesize a recalcitrant glycoprotein called glomalin, with hydrophobic characteristics. GSRP (glomalin soil-related protein) is the generic product of proteins extracted from soil. The aim was to quantify GSRP and evaluate its share in the total soil organic carbon (TOC). GSRP presented a direct and positive association with soil TOC (R²:0.73). The quantitative participation of GSRP regarding TOC (GSRP / TOC) revealed that as TOC content decreases, GSRP proportion increases. Within the TOC range explored in this paper (1.3 to 3.2%), the glomalin related protein pool of soil changes about 9%, representing between 27% and 36% of TOC. This behavior would indicate an increase of resistant carbon forms counteracting the effects of carbon loss.
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The activity of bacteria and fungi is a relevant issue in the process of humification of organic matter and physical stability of the soil, standing out the role of arbuscular mycorrhizal fungi (AMF). AMF synthesize a recalcitrant glycoprotein called glomalin, with hydrophobic characteristics. GSRP (glomalin soil-related protein) is the generic product of proteins extracted from soil. The aim was to quantify GSRP and evaluate its share in the total soil organic carbon (TOC). GSRP presented a direct and positive association with soil TOC (R²:0.73). The quantitative participation of GSRP regarding TOC (GSRP / TOC) revealed that as TOC content decreases, GSRP proportion increases. Within the TOC range explored in this paper (1.3 to 3.2%), the glomalin related protein pool of soil changes about 9%, representing between 27% and 36% of TOC. This behavior would indicate an increase of resistant carbon forms counteracting the effects of carbon loss.

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