Relationship between incidence and severity of peanut smut and its regional distribution in the main growing region of Argentina
Peanut smut, caused by the soil-borne pathogen Thecaphora frezii, has increased in incidence in the main Argentinian peanut-growing regions. Smut-affected pod transform the kernel into a mass of teliospores, which survive in the soil for long time. This study is the first large-scale (regional) surv...
| Autores principales: | , , , , , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
Springer
2021
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/10782 https://link.springer.com/article/10.1007/s40858-021-00473-x https://doi.org/10.1007/s40858-021-00473-x |
| _version_ | 1855036452262379520 |
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| author | Paredes, Juan Andrés Edwards Molina, Juan Pablo Cazon, Luis Ignacio Asinari, Florencia Monguillot, Joaquín Humberto Morichetti, Sergio A. Rago, Alejandro Mario Torres, Adriana M. |
| author_browse | Asinari, Florencia Cazon, Luis Ignacio Edwards Molina, Juan Pablo Monguillot, Joaquín Humberto Morichetti, Sergio A. Paredes, Juan Andrés Rago, Alejandro Mario Torres, Adriana M. |
| author_facet | Paredes, Juan Andrés Edwards Molina, Juan Pablo Cazon, Luis Ignacio Asinari, Florencia Monguillot, Joaquín Humberto Morichetti, Sergio A. Rago, Alejandro Mario Torres, Adriana M. |
| author_sort | Paredes, Juan Andrés |
| collection | INTA Digital |
| description | Peanut smut, caused by the soil-borne pathogen Thecaphora frezii, has increased in incidence in the main Argentinian peanut-growing regions. Smut-affected pod transform the kernel into a mass of teliospores, which survive in the soil for long time. This study is the first large-scale (regional) survey to determine the occurrence and distribution of peanut smut in the main peanut-growing area of Argentina. Surveys were conducted in Córdoba province, in randomly selected commercial peanut fields (n = 217) grown from 2015 to 2020. A five-score severity scale has been used to quantify the severity of smut on pods (0 = healthy kernels and 4 = totally smutted kernels), and a disease severity index (DSI) was calculated. Pods with severity scores of 3 and 4 are rejected by the industry and produce a high volume of spores that spread among fields increasing the inoculum in the soil. Those pods were classified as severely damaged pods (SDP). The relative frequency of smut classes during the years was evaluated and the relationships between the yearly incidence and DSI were determined. The mean of the incidence was variable (never zero) across the years and increased from 1.66% in 2015 to 11.47% in 2020. More than 80% of the affected pods belonged to SDP category. The variable SDP, a more time and cost-effective method for quantifying peanut smut, best explained the variation in DSI values. Our results suggest that that visual estimates of incidence and SDP should be useful for disease monitoring, screening genotypes, or treatment comparisons in smut management experiments. Our survey data provided an update in the knowledge of T. frezii distribution over the peanut-growing area of Argentina. |
| format | info:ar-repo/semantics/artículo |
| id | INTA10782 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | INTA107822021-11-15T18:34:11Z Relationship between incidence and severity of peanut smut and its regional distribution in the main growing region of Argentina Paredes, Juan Andrés Edwards Molina, Juan Pablo Cazon, Luis Ignacio Asinari, Florencia Monguillot, Joaquín Humberto Morichetti, Sergio A. Rago, Alejandro Mario Torres, Adriana M. Argentina Arachis hypogaea Enfermedades de las Plantas Plant Diseases Thecaphora Frezii Maní Carbón del Mani Aggressiveness Linear Regression Peanut smut, caused by the soil-borne pathogen Thecaphora frezii, has increased in incidence in the main Argentinian peanut-growing regions. Smut-affected pod transform the kernel into a mass of teliospores, which survive in the soil for long time. This study is the first large-scale (regional) survey to determine the occurrence and distribution of peanut smut in the main peanut-growing area of Argentina. Surveys were conducted in Córdoba province, in randomly selected commercial peanut fields (n = 217) grown from 2015 to 2020. A five-score severity scale has been used to quantify the severity of smut on pods (0 = healthy kernels and 4 = totally smutted kernels), and a disease severity index (DSI) was calculated. Pods with severity scores of 3 and 4 are rejected by the industry and produce a high volume of spores that spread among fields increasing the inoculum in the soil. Those pods were classified as severely damaged pods (SDP). The relative frequency of smut classes during the years was evaluated and the relationships between the yearly incidence and DSI were determined. The mean of the incidence was variable (never zero) across the years and increased from 1.66% in 2015 to 11.47% in 2020. More than 80% of the affected pods belonged to SDP category. The variable SDP, a more time and cost-effective method for quantifying peanut smut, best explained the variation in DSI values. Our results suggest that that visual estimates of incidence and SDP should be useful for disease monitoring, screening genotypes, or treatment comparisons in smut management experiments. Our survey data provided an update in the knowledge of T. frezii distribution over the peanut-growing area of Argentina. Instituto de Patología Vegetal Fil: Paredes, Juan Andrés. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina Fil: Paredes, Juan Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Fitopatología y Modelización Agrícola (UFyMA); Argentina Fil: Edwards Molina, Juan Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Cazon, Luis Ignacio. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina Fil: Cazon, Luis Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Fitopatología y Modelización Agrícola (UFyMA); Argentina Fil: Asinari, Florencia. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina Fil: Asinari, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Fitopatología y Modelización Agrícola (UFyMA); Argentina Fil: Monguillot, Joaquín Humberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Fitopatología y Modelización Agrícola (UFyMA); Argentina Fil: Monguillot, Joaquín Humberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina Fil: Morichetti, Sergio A. Aceitera General Deheza; Argentina Fil: Rago, Alejandro Mario. Instituto Nacional de Tecnología Agropecuaria (INTA). Centro de Investigaciones Agropecuarias; Argentina Fil: Rago, Alejandro Mario. Universidad Nacional de Rio Cuarto. Facultad de Agronomía y Veterinaria; Argentina Fil: Torres, Adriana M. Universidad Nacional de Rio Cuarto. Facultad de Facultad de Ciencias Exactas, Físico - Químicas y Naturales. Instituto de Investigación en Micología y Micotoxicología (IMICO); Argentina 2021-11-15T18:26:52Z 2021-11-15T18:26:52Z 2021-10-20 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/10782 https://link.springer.com/article/10.1007/s40858-021-00473-x 1983-2052 https://doi.org/10.1007/s40858-021-00473-x eng info:eu-repo/semantics/restrictedAccess application/pdf Springer Tropical Plant Pathology (Published: 20 October 2021) |
| spellingShingle | Argentina Arachis hypogaea Enfermedades de las Plantas Plant Diseases Thecaphora Frezii Maní Carbón del Mani Aggressiveness Linear Regression Paredes, Juan Andrés Edwards Molina, Juan Pablo Cazon, Luis Ignacio Asinari, Florencia Monguillot, Joaquín Humberto Morichetti, Sergio A. Rago, Alejandro Mario Torres, Adriana M. Relationship between incidence and severity of peanut smut and its regional distribution in the main growing region of Argentina |
| title | Relationship between incidence and severity of peanut smut and its regional distribution in the main growing region of Argentina |
| title_full | Relationship between incidence and severity of peanut smut and its regional distribution in the main growing region of Argentina |
| title_fullStr | Relationship between incidence and severity of peanut smut and its regional distribution in the main growing region of Argentina |
| title_full_unstemmed | Relationship between incidence and severity of peanut smut and its regional distribution in the main growing region of Argentina |
| title_short | Relationship between incidence and severity of peanut smut and its regional distribution in the main growing region of Argentina |
| title_sort | relationship between incidence and severity of peanut smut and its regional distribution in the main growing region of argentina |
| topic | Argentina Arachis hypogaea Enfermedades de las Plantas Plant Diseases Thecaphora Frezii Maní Carbón del Mani Aggressiveness Linear Regression |
| url | http://hdl.handle.net/20.500.12123/10782 https://link.springer.com/article/10.1007/s40858-021-00473-x https://doi.org/10.1007/s40858-021-00473-x |
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