Effect of defoliation frequency on Rytidosperma virescens plants and arbuscular mycorrhizal fungi colonization
Rangelands provide different ecosystem services to satisfy human needs. Although grazing management in southern Patagonia is mostly characterized by extensive continuous grazing, rotational grazing management may improve plant productivity and its associated microbiome. Arbuscular mycorrhizal (AM) s...
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| Format: | Artículo |
| Language: | Inglés |
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Elsevier
2022
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| Online Access: | http://hdl.handle.net/20.500.12123/12096 https://www.sciencedirect.com/science/article/pii/S1550742422000525 https://doi.org/10.1016/j.rama.2022.05.003 |
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| author | Toledo, Santiago Fontenla, Sonia Beatriz Peri, Pablo Luis |
| author_browse | Fontenla, Sonia Beatriz Peri, Pablo Luis Toledo, Santiago |
| author_facet | Toledo, Santiago Fontenla, Sonia Beatriz Peri, Pablo Luis |
| author_sort | Toledo, Santiago |
| collection | INTA Digital |
| description | Rangelands provide different ecosystem services to satisfy human needs. Although grazing management in southern Patagonia is mostly characterized by extensive continuous grazing, rotational grazing management may improve plant productivity and its associated microbiome. Arbuscular mycorrhizal (AM) symbioses play an important role in the functioning of arid rangelands. However, in most arid and semiarid grasslands, little is known about the environment-plant-symbiont interaction under different defoliation frequencies and contrasting growth conditions. In this context, the objective of the present study was to evaluate the response of Rytidosperma virescens native grass and the associated AM fungi under different defoliation frequency treatments (plants undefoliated, two clippings with 50-d intervals between defoliations, four clippings with 30-d intervals, and six clippings with 21-d intervals) and two growth conditions (field and greenhouse) in a 150-d experiment. Defoliation frequency with 21-d clipping intervals negatively affected plants and AM colonization. We found a negative linear relationship between AM colonization and removal of aboveground biomass and a positive relationship with root biomass and leaf area of R. virescens plants. We determined that the appropriate recovery period for rotational grazing systems should be at least 50 d (threshold) to optimize forage production and AM symbiosis during spring-summer seasons. Sustainable grazing management practices should be designed to improve or
restore AM communities to maintain positive feedback with plant development. |
| format | Artículo |
| id | INTA12096 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA120962023-04-17T17:34:29Z Effect of defoliation frequency on Rytidosperma virescens plants and arbuscular mycorrhizal fungi colonization Toledo, Santiago Fontenla, Sonia Beatriz Peri, Pablo Luis Mycorrhizae Arbuscular Mycorrhiza Grasslands Defoliation Grazing Intensity Symbiosis Rotational Grazing Micorrizas Micorrizas Arbusculares Desfoliación Intensidad de Pastoreo Simbiosis Pastoreo Rotacional Santa Cruz (Argentina) Praderas Rytidosperma virescens Pasto Nativo Frecuencia de Desfoliación Native Grass Defoliation Frequency Rangelands provide different ecosystem services to satisfy human needs. Although grazing management in southern Patagonia is mostly characterized by extensive continuous grazing, rotational grazing management may improve plant productivity and its associated microbiome. Arbuscular mycorrhizal (AM) symbioses play an important role in the functioning of arid rangelands. However, in most arid and semiarid grasslands, little is known about the environment-plant-symbiont interaction under different defoliation frequencies and contrasting growth conditions. In this context, the objective of the present study was to evaluate the response of Rytidosperma virescens native grass and the associated AM fungi under different defoliation frequency treatments (plants undefoliated, two clippings with 50-d intervals between defoliations, four clippings with 30-d intervals, and six clippings with 21-d intervals) and two growth conditions (field and greenhouse) in a 150-d experiment. Defoliation frequency with 21-d clipping intervals negatively affected plants and AM colonization. We found a negative linear relationship between AM colonization and removal of aboveground biomass and a positive relationship with root biomass and leaf area of R. virescens plants. We determined that the appropriate recovery period for rotational grazing systems should be at least 50 d (threshold) to optimize forage production and AM symbiosis during spring-summer seasons. Sustainable grazing management practices should be designed to improve or restore AM communities to maintain positive feedback with plant development. EEA Santa Cruz Fil: Toledo, Santiago. Universidad Nacional de la Patagonia Austral; Argentina. Fil: Toledo, Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. CIT Santa Cruz; Argentina. Fil: Toledo, Santiago: Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina. Fil: Fontenla, Sonia Beatriz. Universidad Nacional del Comahue. Laboratorio de Biotecnología y Microbiología Aplicada; Argentina. Fil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina. Fil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral; Argentina. Fil: Peri, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. 2022-06-14T15:48:43Z 2022-06-14T15:48:43Z 2022-06-09 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/12096 https://www.sciencedirect.com/science/article/pii/S1550742422000525 Toledo S.; Fontenla S.; Peri P.L. (2022) Effect of defoliation frequency on Rytidosperma virescens plants and arbuscular mycorrhizal fungi colonization. Rangeland Ecology & Management 84: 1-9. https://doi.org/10.1016/j.rama.2022.05.003. 1550-7424 https://doi.org/10.1016/j.rama.2022.05.003 eng info:eu-repo/semantics/restrictedAccess application/pdf Elsevier Rangeland Ecology & Management 84: 1-9. (September 2022) |
| spellingShingle | Mycorrhizae Arbuscular Mycorrhiza Grasslands Defoliation Grazing Intensity Symbiosis Rotational Grazing Micorrizas Micorrizas Arbusculares Desfoliación Intensidad de Pastoreo Simbiosis Pastoreo Rotacional Santa Cruz (Argentina) Praderas Rytidosperma virescens Pasto Nativo Frecuencia de Desfoliación Native Grass Defoliation Frequency Toledo, Santiago Fontenla, Sonia Beatriz Peri, Pablo Luis Effect of defoliation frequency on Rytidosperma virescens plants and arbuscular mycorrhizal fungi colonization |
| title | Effect of defoliation frequency on Rytidosperma virescens plants and arbuscular mycorrhizal fungi colonization |
| title_full | Effect of defoliation frequency on Rytidosperma virescens plants and arbuscular mycorrhizal fungi colonization |
| title_fullStr | Effect of defoliation frequency on Rytidosperma virescens plants and arbuscular mycorrhizal fungi colonization |
| title_full_unstemmed | Effect of defoliation frequency on Rytidosperma virescens plants and arbuscular mycorrhizal fungi colonization |
| title_short | Effect of defoliation frequency on Rytidosperma virescens plants and arbuscular mycorrhizal fungi colonization |
| title_sort | effect of defoliation frequency on rytidosperma virescens plants and arbuscular mycorrhizal fungi colonization |
| topic | Mycorrhizae Arbuscular Mycorrhiza Grasslands Defoliation Grazing Intensity Symbiosis Rotational Grazing Micorrizas Micorrizas Arbusculares Desfoliación Intensidad de Pastoreo Simbiosis Pastoreo Rotacional Santa Cruz (Argentina) Praderas Rytidosperma virescens Pasto Nativo Frecuencia de Desfoliación Native Grass Defoliation Frequency |
| url | http://hdl.handle.net/20.500.12123/12096 https://www.sciencedirect.com/science/article/pii/S1550742422000525 https://doi.org/10.1016/j.rama.2022.05.003 |
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