Quantification of shedding of leaves in yerba mate and determination of associated hormonal levels
In recent years, leaf shedding in the yerba mate crop has been a phenomenon of important economic incidence, the cause of which is still unknown but has been attributed to various factors. The objective of the present study was to establish a methodology to quantify leaves shedding in yerba mate and...
| Autores principales: | , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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Studies Publicações
2022
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/12728 https://studiespublicacoes.com.br/ojs/index.php/seas/article/view/489 https://doi.org/10.54020/seasv3n2-004 |
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| author | Molina, Sandra Patricia Andrade, Andrea Mariela Habel Bruera, Glenda Elizabet Olinuck, Jose Angel |
| author_browse | Andrade, Andrea Mariela Habel Bruera, Glenda Elizabet Molina, Sandra Patricia Olinuck, Jose Angel |
| author_facet | Molina, Sandra Patricia Andrade, Andrea Mariela Habel Bruera, Glenda Elizabet Olinuck, Jose Angel |
| author_sort | Molina, Sandra Patricia |
| collection | INTA Digital |
| description | In recent years, leaf shedding in the yerba mate crop has been a phenomenon of important economic incidence, the cause of which is still unknown but has been attributed to various factors. The objective of the present study was to establish a methodology to quantify leaves shedding in yerba mate and to determine whether the high leaf shedding is due to a biotic or abiotic effect. In both plantations, high shedding of leaves was significant only when the lowest values of heliophany and the highest values of relative humidity were recorded. Coincidentally, a high percentage of green leaf detachment was recorded with the characteristic symptomatology of the fungus Cylindrocladium sp. An accumulation of ABA, JA and SA hormones was detected in yerba mate plants with high shedding of leaves, which was associated with the attack of the necrotrophic fungus Cylindrocladium sp. With predisposing climatic conditions for the manifestation of Cylindrocladium, an early harvest would reduce the loss of green leaves. The differences found among plants Cylindrocladium attack could be due to a genetic condition. The JA pathway may be the most important line of defense activated by Cylindrocladium infection. A high accumulation of JA and ABA has been detected in plants with high leaf shedding that could suppress the SA signaling pathway responsible for SAR establishment. |
| format | info:ar-repo/semantics/artículo |
| id | INTA12728 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Studies Publicações |
| publisherStr | Studies Publicações |
| record_format | dspace |
| spelling | INTA127282022-08-30T15:22:14Z Quantification of shedding of leaves in yerba mate and determination of associated hormonal levels Quantificação da queda de folhas na erva-mate e determinação dos níveis hormonais associados Molina, Sandra Patricia Andrade, Andrea Mariela Habel Bruera, Glenda Elizabet Olinuck, Jose Angel Ilex paraguariensis Cylindrocladium Hormonas Organismos Patógenos Hormones Pathogens Mate Condiciones Climáticas Climatic Conditions Yerba Mate In recent years, leaf shedding in the yerba mate crop has been a phenomenon of important economic incidence, the cause of which is still unknown but has been attributed to various factors. The objective of the present study was to establish a methodology to quantify leaves shedding in yerba mate and to determine whether the high leaf shedding is due to a biotic or abiotic effect. In both plantations, high shedding of leaves was significant only when the lowest values of heliophany and the highest values of relative humidity were recorded. Coincidentally, a high percentage of green leaf detachment was recorded with the characteristic symptomatology of the fungus Cylindrocladium sp. An accumulation of ABA, JA and SA hormones was detected in yerba mate plants with high shedding of leaves, which was associated with the attack of the necrotrophic fungus Cylindrocladium sp. With predisposing climatic conditions for the manifestation of Cylindrocladium, an early harvest would reduce the loss of green leaves. The differences found among plants Cylindrocladium attack could be due to a genetic condition. The JA pathway may be the most important line of defense activated by Cylindrocladium infection. A high accumulation of JA and ABA has been detected in plants with high leaf shedding that could suppress the SA signaling pathway responsible for SAR establishment. Nos últimos anos, o derrame de folhas na cultura da erva-mate tem sido um fenómeno de importante incidência económica, cuja causa ainda é desconhecida mas tem sido atribuída a vários factores. O objectivo do presente estudo era estabelecer uma metodologia para quantificar a queda de folhas na erva-mate e determinar se a alta queda de folhas se deve a um efeito biótico ou abiótico. Em ambas as plantações, o alto desprendimento de folhas só foi significativo quando foram registados os valores mais baixos de heliofania e os valores mais altos de humidade relativa. Coincidentemente, uma elevada percentagem de desprendimento de folhas verdes foi registada com a sintomatologia característica do fungo Cylindrocladium sp. Foi detectada uma acumulação de hormonas ABA, JA e SA em plantas de erva-mate com alto desprendimento de folhas, que foi associada ao ataque do fungo necrófilo Cylindrocladium sp. Com condições climáticas predisponentes para a manifestação do Cylindrocladium, uma colheita precoce reduziria a perda de folhas verdes. As diferenças encontradas entre as plantas ataque de Cylindrocladium poderia ser devido a uma condição genética. A via JA pode ser a linha de defesa mais importante activada pela infecção por Cylindrocladium. Foi detectada uma elevada acumulação de JA e ABA em plantas com elevado derrame de folhas que poderia suprimir a via de sinalização SA responsável pelo estabelecimento de SAR. EEA Cerro Azul Fil: Molina, Sandra Patricia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Cerro Azul; Argentina Fil: Andrade, Andrea M. Universidad Nacional de Río Cuarto, Facultad de Ciencias Exactas, Físico-Químicas y Naturales; Argentina Fil: Habel Bruera, Glenda E. Ministerio del Agro y la Producción de la Provincia de Misiones; Argentina Fil: Olinuck, José A. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Cerro Azul; Argentina 2022-08-30T15:14:10Z 2022-08-30T15:14:10Z 2022-03-31 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/12728 https://studiespublicacoes.com.br/ojs/index.php/seas/article/view/489 2764-0760 https://doi.org/10.54020/seasv3n2-004 eng info:eu-repo/semantics/openAccess 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 Studies Publicações Studies in Environmental and Animal Sciences 3 (2) : 208-230 (apr./jun., 2022) |
| spellingShingle | Ilex paraguariensis Cylindrocladium Hormonas Organismos Patógenos Hormones Pathogens Mate Condiciones Climáticas Climatic Conditions Yerba Mate Molina, Sandra Patricia Andrade, Andrea Mariela Habel Bruera, Glenda Elizabet Olinuck, Jose Angel Quantification of shedding of leaves in yerba mate and determination of associated hormonal levels |
| title | Quantification of shedding of leaves in yerba mate and determination of associated hormonal levels |
| title_full | Quantification of shedding of leaves in yerba mate and determination of associated hormonal levels |
| title_fullStr | Quantification of shedding of leaves in yerba mate and determination of associated hormonal levels |
| title_full_unstemmed | Quantification of shedding of leaves in yerba mate and determination of associated hormonal levels |
| title_short | Quantification of shedding of leaves in yerba mate and determination of associated hormonal levels |
| title_sort | quantification of shedding of leaves in yerba mate and determination of associated hormonal levels |
| topic | Ilex paraguariensis Cylindrocladium Hormonas Organismos Patógenos Hormones Pathogens Mate Condiciones Climáticas Climatic Conditions Yerba Mate |
| url | http://hdl.handle.net/20.500.12123/12728 https://studiespublicacoes.com.br/ojs/index.php/seas/article/view/489 https://doi.org/10.54020/seasv3n2-004 |
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