Responses of Trifolium repens L. root structure and function to shading and phosphorus shortage: limits to adaptative plasticity during establishment?
Shading and low soil phosphorus availability may limit root growth of forage species in humid-temperate silvopastoral systems. However, plants are able to cope with such constraints by modifying root structure to improve the establishment and survival. The aim of this work was to evaluate the plasti...
| Autores principales: | , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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Springer
2023
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/14755 https://link.springer.com/article/10.1007/s10457-023-00867-7 https://doi.org/10.1007/s10457-023-00867-7 |
| _version_ | 1855037176019943424 |
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| author | Gatti, María Laura Cornaglia, Patricia Susana Re, Paula |
| author_browse | Cornaglia, Patricia Susana Gatti, María Laura Re, Paula |
| author_facet | Gatti, María Laura Cornaglia, Patricia Susana Re, Paula |
| author_sort | Gatti, María Laura |
| collection | INTA Digital |
| description | Shading and low soil phosphorus availability may limit root growth of forage species in humid-temperate silvopastoral systems. However, plants are able to cope with such constraints by modifying root structure to improve the establishment and survival. The aim of this work was to evaluate the plasticity of different types of roots of Trifolium repens L. and its functional impact in the first two years of the species. A pot trial designed in 3 randomized complete block was carried out in sub-subdivided plots: main plot was the shading treatment (4 levels: full sun = 0% and 30%, 60% and 90% of photosynthetically active radiation (PAR) reduction), sub-plots were 2 cultivars of large-leafed (cv. Junín and cv. El Lucero) and sub-sub-plots were 2 phosphorous conditions (without P− and with added P+). Whole plants were harvested and the root system was divided into seminal taproot and fibrous roots: coarse roots (1 to ≤ 2 mm of diameter) and fine roots (≤ 1 mm of diameter). Even under 60% of shading, both cultivars were able to maintain root soil penetration and water and nutrients acquisition, regardless of the level of P. These functions were associated with the length and taproot diameter, specific taproot length and fine root biomass during establishment. Instead 90% of shading was a clear limit to plasticity and survival of the plants during the second year. Under mean total daily PAR radiation > 15.3 mol m−2 day−1 and P shortage, it is expected that the enrichment with large-leafed cultivars could be successful in these systems. |
| format | info:ar-repo/semantics/artículo |
| id | INTA14755 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | INTA147552023-07-14T20:04:01Z Responses of Trifolium repens L. root structure and function to shading and phosphorus shortage: limits to adaptative plasticity during establishment? Gatti, María Laura Cornaglia, Patricia Susana Re, Paula Trifolium repens Raíces Fósforo Plasticidad Biomasa Roots Phosphorus Plasticity Biomass Shading and low soil phosphorus availability may limit root growth of forage species in humid-temperate silvopastoral systems. However, plants are able to cope with such constraints by modifying root structure to improve the establishment and survival. The aim of this work was to evaluate the plasticity of different types of roots of Trifolium repens L. and its functional impact in the first two years of the species. A pot trial designed in 3 randomized complete block was carried out in sub-subdivided plots: main plot was the shading treatment (4 levels: full sun = 0% and 30%, 60% and 90% of photosynthetically active radiation (PAR) reduction), sub-plots were 2 cultivars of large-leafed (cv. Junín and cv. El Lucero) and sub-sub-plots were 2 phosphorous conditions (without P− and with added P+). Whole plants were harvested and the root system was divided into seminal taproot and fibrous roots: coarse roots (1 to ≤ 2 mm of diameter) and fine roots (≤ 1 mm of diameter). Even under 60% of shading, both cultivars were able to maintain root soil penetration and water and nutrients acquisition, regardless of the level of P. These functions were associated with the length and taproot diameter, specific taproot length and fine root biomass during establishment. Instead 90% of shading was a clear limit to plasticity and survival of the plants during the second year. Under mean total daily PAR radiation > 15.3 mol m−2 day−1 and P shortage, it is expected that the enrichment with large-leafed cultivars could be successful in these systems. EEA Delta del Paraná Fil: Gatti, María Laura. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Animal. Cátedra de Forrajicultura. Grupo de Estudio y Trabajo en Ecología y Manejo de Sistemas Silvopastoriles; Argentina Fil: Cornaglia, Patricia Susana. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Animal. Cátedra de Forrajicultura. Grupo de Estudio y Trabajo en Ecología y Manejo de Sistemas Silvopastoriles; Argentina Fil: Re, Paula. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Animal. Cátedra de Forrajicultura. Grupo de Estudio y Trabajo en Ecología y Manejo de Sistemas Silvopastoriles; Argentina Fil: Re, Paula. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Delta del Paraná; Argentina 2023-07-14T19:56:18Z 2023-07-14T19:56:18Z 2023-07 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/14755 https://link.springer.com/article/10.1007/s10457-023-00867-7 0167-4366 1572-9680 https://doi.org/10.1007/s10457-023-00867-7 eng info:eu-repo/semantics/restrictedAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Springer Agroforestry Systems (Published: 10 July 2023) |
| spellingShingle | Trifolium repens Raíces Fósforo Plasticidad Biomasa Roots Phosphorus Plasticity Biomass Gatti, María Laura Cornaglia, Patricia Susana Re, Paula Responses of Trifolium repens L. root structure and function to shading and phosphorus shortage: limits to adaptative plasticity during establishment? |
| title | Responses of Trifolium repens L. root structure and function to shading and phosphorus shortage: limits to adaptative plasticity during establishment? |
| title_full | Responses of Trifolium repens L. root structure and function to shading and phosphorus shortage: limits to adaptative plasticity during establishment? |
| title_fullStr | Responses of Trifolium repens L. root structure and function to shading and phosphorus shortage: limits to adaptative plasticity during establishment? |
| title_full_unstemmed | Responses of Trifolium repens L. root structure and function to shading and phosphorus shortage: limits to adaptative plasticity during establishment? |
| title_short | Responses of Trifolium repens L. root structure and function to shading and phosphorus shortage: limits to adaptative plasticity during establishment? |
| title_sort | responses of trifolium repens l root structure and function to shading and phosphorus shortage limits to adaptative plasticity during establishment |
| topic | Trifolium repens Raíces Fósforo Plasticidad Biomasa Roots Phosphorus Plasticity Biomass |
| url | http://hdl.handle.net/20.500.12123/14755 https://link.springer.com/article/10.1007/s10457-023-00867-7 https://doi.org/10.1007/s10457-023-00867-7 |
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