Fecha/hora: 16/06/2024 00:16:55

Biblioteca(s): | INIA La Estanzuela.
Fecha corriente: | 04/09/2019
Fecha de la última actualización: | 15/10/2019
Autoria: | DI BELLA, C.E.; GARCÍA-PARISI, P.A.; LATTANZI, F.; DRUILLE, M.; SCHNYDER, H.; GRIMOLDI, A.A.
Afiliación: | CARLA E. DI BELLA, IFEVA, Universidad de Buenos Aires, CONICET, Facultad de Agronomía Buenos Aires./Universidad de Buenos Aires, Facultad de Agronomía, Departamento de Producción Animal, Cátedra de Forrajicultura Buenos Aires Argentina.; PABLO A. GARCÍA-PARISI, IFEVA, Universidad de Buenos Aires, CONICET, Facultad de Agronomía Buenos Aires./Universidad de Buenos Aires, Facultad de Agronomía, Departamento de Producción Animal, Cátedra de Forrajicultura Buenos Aires Argentina.; FERNANDO A. LATTANZI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay./Technische Universität MünchenFreising-Weihenstephan Germany.; MAGDALENA DRUILLE, Universidad de Buenos Aires, Facultad de Agronomía, Departamento de Producción Animal, Cátedra de Forrajicultura, Buenos Aires Argentina.; HANS SCHNYDER, Technische Universität MünchenFreising-Weihenstephan Germany.; AGUSTÍN A. GRIMOLDI, IFEVA, Universidad de Buenos Aires, CONICET, Facultad de Agronomía Buenos Aires./Universidad de Buenos Aires, Facultad de Agronomía, Departamento de Producción Animal, Cátedra de Forrajicultura Buenos Aires Argentina.
Título: | Grass to legume facilitation in saline-sodic steppes: influence of vegetation seasonality and root symbionts.
Año de publicación: | 2019
Fuente/Imprenta: | Plant and soil, 2019.
DOI: | 10.1007/s11104-019-04247-y
Idioma: | Inglés
Notas: | Article hisotory: Received: 18 February 2019 /Accepted: 1 August 2019.

Contenido:

Abstract: Aim Identify key factors driving legume seedlings performance in saline-sodic soils. Methods Five plots were established in paired subhumid steppes with saline-sodic soils dominated by Distichlis spicata or Panicum coloratum. In each plot, Lotus tenuis was sown in autumn and individual plants were collected close to nurse plants (dominant species), and in open areas, at the end of the cold and warm seasons. Carbon and nutrient acquisition (through C and O isotopic composition and N and P content measurements) and plant symbiotic functioning (through N
fixation by rhizobia and mycorrhizal colonization measurements) were determined. Results Biomass of legume grown close to a nurse plant was always higher than in open areas. This increase was higher close to P. coloratum and to D.spicatainthecoldandwarmseasons,respectively. In both cases, L. tenuis improved its nutrient acquisition and symbiosis functioning. N-acquisition and rhizobia efficiency increased in the most facilitated L.tenuis plants in the cold season while P-acquisition was greater in the warm season. Conclusions Grass-to-legume facilitation in sub-humid steppes with saline-sodic soils was detected in cold and warm seasons, differing between steppes in relationship with the vegetation growing rate and the establishment and functioning of legume-rhizobia-mycorrhiza symbioses.

Palabras-Clave: | DUAL ISOTOPE APPROACH; HALOMORPHIC SOILS; LOTUS TENUIS; MYCORRHIZA; N FIXATION; N ISOTOPIC COMPOSITION.
Thesagro: | LEGUMINOSAS.
Categoría del tema: | --
Registro original: | INIA La Estanzuela (LE)
Ejemplares: | LE - (102977-1) - PXI - AP - DD - PP/Plant Soil/2019 -  -  - DIS