Penicillium digitatum and Penicillium italicum are the main causal agents of postharvest diseases... more Penicillium digitatum and Penicillium italicum are the main causal agents of postharvest diseases in lemon. Over the last decades, the appearance of isolates resistant to the main commercial fungicides has been considered one of the most serious problems for the citrus industry. In this work, potassium sorbate (KS) was evaluated as an alternative to chemical fungicides to control postharvest diseases caused by Penicillium isolates resistant to imazalil, thiabendazol, and pyrimethanil. In vitro assays showed that 1% KS inhibited conidia germination and mycelial growth of sensitive and resistant P. digitatum and P. italicum isolates, being this effect stronger at pH 5 than at pH 9. In curative treatments, the immersion of inoculated lemons in 1% KS aqueous solution for 30 s reduced green and blue molds incidences by around 80%. No wound protection effect was observed when wounded lemons were immersed in 3% salt solution before inoculation. Noteworthy, the inclusion of KS in a commercial wax coating effectively controlled green and blue molds, even in decays caused by fungicide resistance isolates. Together, results encourage the use of KS in lemon postharvest treatments to contribute to the management of resistant strains, which represent a major challenge in packinghouses worldwide.Practical ApplicationThe use of KS in citrus postharvest treatments would help producers to reduce spoilage caused by Penicillium fungicide‐resistant strains. The inclusion of this generally recognized as safe compound in wax coatings improves its persistence on the fruit surface, keeping product quality during long‐term overseas transport. In sum, KS constitutes an affordable and eco‐friendly option for controlling postharvest molds in lemon fruit.
Urera altissima L. es una planta apoyante, nativa que habita en las provincias de Jujuy, Salta y ... more Urera altissima L. es una planta apoyante, nativa que habita en las provincias de Jujuy, Salta y Tucumán, entre los 300-900 msnm. El objetivo del presente trabajo fue caracterizar la anatomía del tallo y de la raíz de U. altissima de la provincia de Tucumán. Se trabajó con material fijado en FAA y se emplearon técnicas anatómicas convencionales. Las secciones transversales del tallo y de la raíz muestran cambios graduales en la anatomía de estos órganos. En los ápices, tanto caulinar como radical, el crecimiento secundario es típico, en las zonas más alejadas se observa el crecimiento atípico o anómalo con la producción de paquetes parenquimáticos en el xilema; mientras que, en proximidad a la región de transición el crecimiento vuelve a presentarse típico. La formación atípica de los paquetes parenquimá- ticos presenta dos orígenes, una a partir de la actividad del cámbium, y otra por dediferenciación de las fibras. El ambiente en el que crece esta especie sería uno de los factores...
Penicillium digitatum and Penicillium italicum are the main causal agents of postharvest diseases... more Penicillium digitatum and Penicillium italicum are the main causal agents of postharvest diseases in lemon. Over the last decades, the appearance of isolates resistant to the main commercial fungicides has been considered one of the most serious problems for the citrus industry. In this work, potassium sorbate (KS) was evaluated as an alternative to chemical fungicides to control postharvest diseases caused by Penicillium isolates resistant to imazalil, thiabendazol, and pyrimethanil. In vitro assays showed that 1% KS inhibited conidia germination and mycelial growth of sensitive and resistant P. digitatum and P. italicum isolates, being this effect stronger at pH 5 than at pH 9. In curative treatments, the immersion of inoculated lemons in 1% KS aqueous solution for 30 s reduced green and blue molds incidences by around 80%. No wound protection effect was observed when wounded lemons were immersed in 3% salt solution before inoculation. Noteworthy, the inclusion of KS in a commerci...
El BGA conserva diferentes genotipos relacionados con la frutilla cultivada Fragaria x ananassa; ... more El BGA conserva diferentes genotipos relacionados con la frutilla cultivada Fragaria x ananassa; estos corresponden a las especies: Duchesnea indica(con dos formas botánicas: indica y albocapout), Duchesnea chrysantha, Potentilla tucumanensis, Fragaria chiloensis, Fragaria vesca, Fragaria virginiana, y numerosos cultivares e híbridos de Fragaria x ananassa. Los objetivos principales del BGA son: mantener la biodiversidad, conservar genotipos de interés para programas de mejoramiento y posibilitar el desarrollo de diversas líneas de investigación (tesis de grado, post-grado y post-doctorales). El BGA utiliza tres modalidades de conservación: 1)material in vitro, bajo condiciones de laboratorio; 2) material in vivo, bajo condiciones controladas de Fitotrón y 3) material in vivo, bajo condiciones de vivero a campo. El material in vitro se propaga a partir de ápices de estolones, bajo condiciones de esterilidad, en frascos de vidrio con 2 medios diferentes: agar enriquecido con sales pa...
Primer informe de Duchesnea indica f. albocaput (Rosaceae) en Noroeste de Argentina. El género Du... more Primer informe de Duchesnea indica f. albocaput (Rosaceae) en Noroeste de Argentina. El género Duchesnea incluye dos especies originarias de India: D. indica y D. chrysantha. Durante el período 2002-2016, se realizaron monitoreos de especies silvestres relacionadas con la frutilla cultivada en el Noroeste Argentino y se encontraron numerosas poblaciones de D. indica pero ninguna de D. chrysantha. Plantas de D. indica con frutos rojos y plantas con frutos blancos fueron colectadas y conservadas ex situ, en cámaras bajo condiciones controladas y en invernaderos a campo. Se consultaron también materiales de diferentes herbarios nacionales e internacionales, y solo se encontraron reportes de ejemplares de D. indica de frutos rojos para Argentina. En el presente trabajo se reporta por primera vez para Argentina y Sudamérica, la presencia de poblaciones de D. indica f. albocaput, co-habitando con poblaciones de D. indica f. indica en sotobosques de Tucumán. Con esta cita se amplía el rang...
Sugarcane orange rust caused by Puccinia kuehnii has recently become an important disease in suga... more Sugarcane orange rust caused by Puccinia kuehnii has recently become an important disease in sugarcane crops and its spread is causing great concern to growers. In this study, we analyzed spores from symptomatic orange rust sugarcane leaves collected in multiple locations in Cuba in a 4-year-period in order to characterize morphological traits of P. kuehnii, establish an adequate molecular technique to characterize it, and determine its infection court in sugarcane. Orange rust caused by P. kuehnii was confirmed by polymerase chain reaction (PCR) and morphological characterization. AFLP markers detected high diversity in P. kuenhnii samples. Sequencing of rDNA regions, as expected, did not reveal differences and SSR markers designed for P. melanocephala could not be transferred to P. kuehnii. In addition to stomata, entry through prickles was also detected as a new infection court in sugarcane. Although the presence of pustules on the adaxial leaf surface was frequently detected, no...
Main conclusionColletotrichum acutatum M11 produces a diffusible compound that suppresses the bio... more Main conclusionColletotrichum acutatum M11 produces a diffusible compound that suppresses the biochemical, physiological, molecular and anatomical events associated with the defence response induced by the plant defence elicitor AsES.AbstractThe fungal pathogen Colletotrichum acutatum, the causal agent of anthracnose disease, causes important economical losses in strawberry crop worldwide and synthetic agrochemicals are used to control it. In this context, the control of the disease using bioproducts is gaining reputation as an alternative of those toxic and pollutant agrochemicals. However, the success of the strategies using bioproducts can be seriously jeopardized in the presence of biological agents exerting a defence suppression effect. In this report, we show that the response defence induced in plant by the elicitor AsES from the fungus Acremonium strictum can be suppressed by a diffusible compound produced by isolate M11 of C. acutatum. Results revealed that strawberry plants treated with conidia of the isolated M11 or the culture supernatant of the isolate M11 suppress: ROS accumulation (e.g., H2O2, O2·− and NO), cell wall reinforcement (e.g., lignin and callose), and the up-regulation of defence-related genes (e.g., FaPR1, FaCHI23, FaPDF1.2, FaCAT, FaCDPK, FaCML39) induced by the elicitor AsES. Additionally, we show that the defence suppressing effect causes a systemic sensitization of plants. Results presented here highlights the necessity to make an integral study of the microbiome present in soils and plant biosphere before applying defence activation bioproducts to control crop diseases.
Lonchocarpus lilloi (Fabaceae, Papilionoideae)". Lilloa 48 (2). Lonchocarpus lilloi es un ár... more Lonchocarpus lilloi (Fabaceae, Papilionoideae)". Lilloa 48 (2). Lonchocarpus lilloi es un árbol endémico de Salta y Jujuy que habita entre 350 y 500 msnm. Mide de 10– 30 m de altura, con hojas compuestas de 4 a 6 folíolos opuestos y un folíolo terminal. El objetivo fue estudiar la anatomía foliar de esta especie. Se utilizó material fresco coleccionado en el Jardín Botánico de Fundación Miguel Lillo y en la Reserva Experimental Horco Molle y se aplicaron técnicas anatómicas convencionales. Los resultados mostraron que el folíolo es entero, simétrico, ovado y de venación pinnada. Estomas de distintos tipos: paracítico, hemi-paracítico, anomocítico y anfiparacítico, en la epidermis abaxial; se observaron tricomas sim-ples y glandulares. Pecíolo subcircular con estomas actinocíticos y tricomas simples. Los distintos tipos de estomas observados en la epidermis de lámina y pecíolo son caracteres no citados antes para esta especie. Se observaron canales esquizógenos y cristales prism...
Sugarcane orange rust caused by Puccinia kuehnii has recently become an important disease in suga... more Sugarcane orange rust caused by Puccinia kuehnii has recently become an important disease in sugarcane crops and its spread is causing great concern to growers. In this study, we analyzed spores from symptomatic orange rust sugarcane leaves collected in multiple locations in Cuba in a 4-year-period in order to characterize morphological traits of P. kuehnii, establish an adequate molecular technique to characterize it, and determine its infection court in sugarcane. Orange rust caused by P. kuehnii was confirmed by polymerase chain reaction (PCR) and morphological characterization. AFLP markers detected high diversity in P. kuenhnii samples. Sequencing of rDNA regions, as expected, did not reveal differences and SSR markers designed for P. melanocephala could not be transferred to P. kuehnii. In addition to stomata, entry through prickles was also detected as a new infection court in sugarcane. Although the presence of pustules on the adaxial leaf surface was frequently detected, no...
Fil: Ortiz, Miguel. Universidad Nacional de Tucuman. Facultad de Ciencias Naturales e Instituto M... more Fil: Ortiz, Miguel. Universidad Nacional de Tucuman. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina
Mangone, Franco M.; Avila Hael, Graciela N.; Luque, Catalina A.; Debes, Mario A.; Albornoz, Patri... more Mangone, Franco M.; Avila Hael, Graciela N.; Luque, Catalina A.; Debes, Mario A.; Albornoz, Patricia L.; Arias, Marta E. 2011. “Leaf anatomy of Tillandsia didisticha (Bromeliaceae) in the province of Tucumán”. Lilloa 48 (2). Tillandsia didisticha is a native epiphyte of Tucumán, with high nutritional and medicinal value. The aim of this work was to analyze its leaf anatomy. Conventional anatomical techniques were applied. The results show uniestratified epidermis with subepidermal tissue and the typical Tillandsiodeae scale. Stomata only in the abaxial epidermis surrounded by different number of subsidiary cells. Dorsiventral mesophyll, aquifer parenchyma; chlorenchyma with calcium oxalate crystals; aerenchyma; colateral vascular bundle. Starch grains in sheath. The anatomical characters described in this work are an important contribution for taxonomic research of the subfamily and future research related to the medicinal and nutritional importance of this species.
Fil: Arias, Marta Eugenia. Universidad Nacional de Tucuman. Facultad de Ciencias Naturales e Inst... more Fil: Arias, Marta Eugenia. Universidad Nacional de Tucuman. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina. Universidad Nacional de Catamarca. Facultad de Ciencias Exactas y Naturales; Argentina
Introducción y objetivos: La ubicación taxonómica de las especies de la tribu Potentilleae en Arg... more Introducción y objetivos: La ubicación taxonómica de las especies de la tribu Potentilleae en Argentina fue muy controvertida e intensamente debatida por varios autores, de tal manera que algunos fusionaron géneros, mientras que otros los reconocieron como entidades taxonómicas válidas. Estos conflictos muestran la necesidad de realizar un tratamiento taxonómico actualizado. El objetivo de este trabajo es presentar una sinopsis taxonómica actualizada de las Potentilleae en Argentina. M&M: Se recopilaron datos taxonómicos de la literatura, incluidos estudios filogenéticos, y se analizaron especímenes de la tribu Potentilleae de herbarios argentinos y extranjeros; además de material colectado a campo. Resultados y Conclusiones: En Argentina, se reconocieron 3 géneros con 5 especies y 2 formas para la tribu Potentilleae, diferenciándose en una clave dicotómica por caracteres vegetativos, florales y carpológicos. Se legitimó el nombre de los autores de una especie y se lectotipificó una...
Penicillium digitatum and Penicillium italicum are the main causal agents of postharvest diseases... more Penicillium digitatum and Penicillium italicum are the main causal agents of postharvest diseases in lemon. Over the last decades, the appearance of isolates resistant to the main commercial fungicides has been considered one of the most serious problems for the citrus industry. In this work, potassium sorbate (KS) was evaluated as an alternative to chemical fungicides to control postharvest diseases caused by Penicillium isolates resistant to imazalil, thiabendazol, and pyrimethanil. In vitro assays showed that 1% KS inhibited conidia germination and mycelial growth of sensitive and resistant P. digitatum and P. italicum isolates, being this effect stronger at pH 5 than at pH 9. In curative treatments, the immersion of inoculated lemons in 1% KS aqueous solution for 30 s reduced green and blue molds incidences by around 80%. No wound protection effect was observed when wounded lemons were immersed in 3% salt solution before inoculation. Noteworthy, the inclusion of KS in a commercial wax coating effectively controlled green and blue molds, even in decays caused by fungicide resistance isolates. Together, results encourage the use of KS in lemon postharvest treatments to contribute to the management of resistant strains, which represent a major challenge in packinghouses worldwide.Practical ApplicationThe use of KS in citrus postharvest treatments would help producers to reduce spoilage caused by Penicillium fungicide‐resistant strains. The inclusion of this generally recognized as safe compound in wax coatings improves its persistence on the fruit surface, keeping product quality during long‐term overseas transport. In sum, KS constitutes an affordable and eco‐friendly option for controlling postharvest molds in lemon fruit.
Urera altissima L. es una planta apoyante, nativa que habita en las provincias de Jujuy, Salta y ... more Urera altissima L. es una planta apoyante, nativa que habita en las provincias de Jujuy, Salta y Tucumán, entre los 300-900 msnm. El objetivo del presente trabajo fue caracterizar la anatomía del tallo y de la raíz de U. altissima de la provincia de Tucumán. Se trabajó con material fijado en FAA y se emplearon técnicas anatómicas convencionales. Las secciones transversales del tallo y de la raíz muestran cambios graduales en la anatomía de estos órganos. En los ápices, tanto caulinar como radical, el crecimiento secundario es típico, en las zonas más alejadas se observa el crecimiento atípico o anómalo con la producción de paquetes parenquimáticos en el xilema; mientras que, en proximidad a la región de transición el crecimiento vuelve a presentarse típico. La formación atípica de los paquetes parenquimá- ticos presenta dos orígenes, una a partir de la actividad del cámbium, y otra por dediferenciación de las fibras. El ambiente en el que crece esta especie sería uno de los factores...
Penicillium digitatum and Penicillium italicum are the main causal agents of postharvest diseases... more Penicillium digitatum and Penicillium italicum are the main causal agents of postharvest diseases in lemon. Over the last decades, the appearance of isolates resistant to the main commercial fungicides has been considered one of the most serious problems for the citrus industry. In this work, potassium sorbate (KS) was evaluated as an alternative to chemical fungicides to control postharvest diseases caused by Penicillium isolates resistant to imazalil, thiabendazol, and pyrimethanil. In vitro assays showed that 1% KS inhibited conidia germination and mycelial growth of sensitive and resistant P. digitatum and P. italicum isolates, being this effect stronger at pH 5 than at pH 9. In curative treatments, the immersion of inoculated lemons in 1% KS aqueous solution for 30 s reduced green and blue molds incidences by around 80%. No wound protection effect was observed when wounded lemons were immersed in 3% salt solution before inoculation. Noteworthy, the inclusion of KS in a commerci...
El BGA conserva diferentes genotipos relacionados con la frutilla cultivada Fragaria x ananassa; ... more El BGA conserva diferentes genotipos relacionados con la frutilla cultivada Fragaria x ananassa; estos corresponden a las especies: Duchesnea indica(con dos formas botánicas: indica y albocapout), Duchesnea chrysantha, Potentilla tucumanensis, Fragaria chiloensis, Fragaria vesca, Fragaria virginiana, y numerosos cultivares e híbridos de Fragaria x ananassa. Los objetivos principales del BGA son: mantener la biodiversidad, conservar genotipos de interés para programas de mejoramiento y posibilitar el desarrollo de diversas líneas de investigación (tesis de grado, post-grado y post-doctorales). El BGA utiliza tres modalidades de conservación: 1)material in vitro, bajo condiciones de laboratorio; 2) material in vivo, bajo condiciones controladas de Fitotrón y 3) material in vivo, bajo condiciones de vivero a campo. El material in vitro se propaga a partir de ápices de estolones, bajo condiciones de esterilidad, en frascos de vidrio con 2 medios diferentes: agar enriquecido con sales pa...
Primer informe de Duchesnea indica f. albocaput (Rosaceae) en Noroeste de Argentina. El género Du... more Primer informe de Duchesnea indica f. albocaput (Rosaceae) en Noroeste de Argentina. El género Duchesnea incluye dos especies originarias de India: D. indica y D. chrysantha. Durante el período 2002-2016, se realizaron monitoreos de especies silvestres relacionadas con la frutilla cultivada en el Noroeste Argentino y se encontraron numerosas poblaciones de D. indica pero ninguna de D. chrysantha. Plantas de D. indica con frutos rojos y plantas con frutos blancos fueron colectadas y conservadas ex situ, en cámaras bajo condiciones controladas y en invernaderos a campo. Se consultaron también materiales de diferentes herbarios nacionales e internacionales, y solo se encontraron reportes de ejemplares de D. indica de frutos rojos para Argentina. En el presente trabajo se reporta por primera vez para Argentina y Sudamérica, la presencia de poblaciones de D. indica f. albocaput, co-habitando con poblaciones de D. indica f. indica en sotobosques de Tucumán. Con esta cita se amplía el rang...
Sugarcane orange rust caused by Puccinia kuehnii has recently become an important disease in suga... more Sugarcane orange rust caused by Puccinia kuehnii has recently become an important disease in sugarcane crops and its spread is causing great concern to growers. In this study, we analyzed spores from symptomatic orange rust sugarcane leaves collected in multiple locations in Cuba in a 4-year-period in order to characterize morphological traits of P. kuehnii, establish an adequate molecular technique to characterize it, and determine its infection court in sugarcane. Orange rust caused by P. kuehnii was confirmed by polymerase chain reaction (PCR) and morphological characterization. AFLP markers detected high diversity in P. kuenhnii samples. Sequencing of rDNA regions, as expected, did not reveal differences and SSR markers designed for P. melanocephala could not be transferred to P. kuehnii. In addition to stomata, entry through prickles was also detected as a new infection court in sugarcane. Although the presence of pustules on the adaxial leaf surface was frequently detected, no...
Main conclusionColletotrichum acutatum M11 produces a diffusible compound that suppresses the bio... more Main conclusionColletotrichum acutatum M11 produces a diffusible compound that suppresses the biochemical, physiological, molecular and anatomical events associated with the defence response induced by the plant defence elicitor AsES.AbstractThe fungal pathogen Colletotrichum acutatum, the causal agent of anthracnose disease, causes important economical losses in strawberry crop worldwide and synthetic agrochemicals are used to control it. In this context, the control of the disease using bioproducts is gaining reputation as an alternative of those toxic and pollutant agrochemicals. However, the success of the strategies using bioproducts can be seriously jeopardized in the presence of biological agents exerting a defence suppression effect. In this report, we show that the response defence induced in plant by the elicitor AsES from the fungus Acremonium strictum can be suppressed by a diffusible compound produced by isolate M11 of C. acutatum. Results revealed that strawberry plants treated with conidia of the isolated M11 or the culture supernatant of the isolate M11 suppress: ROS accumulation (e.g., H2O2, O2·− and NO), cell wall reinforcement (e.g., lignin and callose), and the up-regulation of defence-related genes (e.g., FaPR1, FaCHI23, FaPDF1.2, FaCAT, FaCDPK, FaCML39) induced by the elicitor AsES. Additionally, we show that the defence suppressing effect causes a systemic sensitization of plants. Results presented here highlights the necessity to make an integral study of the microbiome present in soils and plant biosphere before applying defence activation bioproducts to control crop diseases.
Lonchocarpus lilloi (Fabaceae, Papilionoideae)". Lilloa 48 (2). Lonchocarpus lilloi es un ár... more Lonchocarpus lilloi (Fabaceae, Papilionoideae)". Lilloa 48 (2). Lonchocarpus lilloi es un árbol endémico de Salta y Jujuy que habita entre 350 y 500 msnm. Mide de 10– 30 m de altura, con hojas compuestas de 4 a 6 folíolos opuestos y un folíolo terminal. El objetivo fue estudiar la anatomía foliar de esta especie. Se utilizó material fresco coleccionado en el Jardín Botánico de Fundación Miguel Lillo y en la Reserva Experimental Horco Molle y se aplicaron técnicas anatómicas convencionales. Los resultados mostraron que el folíolo es entero, simétrico, ovado y de venación pinnada. Estomas de distintos tipos: paracítico, hemi-paracítico, anomocítico y anfiparacítico, en la epidermis abaxial; se observaron tricomas sim-ples y glandulares. Pecíolo subcircular con estomas actinocíticos y tricomas simples. Los distintos tipos de estomas observados en la epidermis de lámina y pecíolo son caracteres no citados antes para esta especie. Se observaron canales esquizógenos y cristales prism...
Sugarcane orange rust caused by Puccinia kuehnii has recently become an important disease in suga... more Sugarcane orange rust caused by Puccinia kuehnii has recently become an important disease in sugarcane crops and its spread is causing great concern to growers. In this study, we analyzed spores from symptomatic orange rust sugarcane leaves collected in multiple locations in Cuba in a 4-year-period in order to characterize morphological traits of P. kuehnii, establish an adequate molecular technique to characterize it, and determine its infection court in sugarcane. Orange rust caused by P. kuehnii was confirmed by polymerase chain reaction (PCR) and morphological characterization. AFLP markers detected high diversity in P. kuenhnii samples. Sequencing of rDNA regions, as expected, did not reveal differences and SSR markers designed for P. melanocephala could not be transferred to P. kuehnii. In addition to stomata, entry through prickles was also detected as a new infection court in sugarcane. Although the presence of pustules on the adaxial leaf surface was frequently detected, no...
Fil: Ortiz, Miguel. Universidad Nacional de Tucuman. Facultad de Ciencias Naturales e Instituto M... more Fil: Ortiz, Miguel. Universidad Nacional de Tucuman. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina
Mangone, Franco M.; Avila Hael, Graciela N.; Luque, Catalina A.; Debes, Mario A.; Albornoz, Patri... more Mangone, Franco M.; Avila Hael, Graciela N.; Luque, Catalina A.; Debes, Mario A.; Albornoz, Patricia L.; Arias, Marta E. 2011. “Leaf anatomy of Tillandsia didisticha (Bromeliaceae) in the province of Tucumán”. Lilloa 48 (2). Tillandsia didisticha is a native epiphyte of Tucumán, with high nutritional and medicinal value. The aim of this work was to analyze its leaf anatomy. Conventional anatomical techniques were applied. The results show uniestratified epidermis with subepidermal tissue and the typical Tillandsiodeae scale. Stomata only in the abaxial epidermis surrounded by different number of subsidiary cells. Dorsiventral mesophyll, aquifer parenchyma; chlorenchyma with calcium oxalate crystals; aerenchyma; colateral vascular bundle. Starch grains in sheath. The anatomical characters described in this work are an important contribution for taxonomic research of the subfamily and future research related to the medicinal and nutritional importance of this species.
Fil: Arias, Marta Eugenia. Universidad Nacional de Tucuman. Facultad de Ciencias Naturales e Inst... more Fil: Arias, Marta Eugenia. Universidad Nacional de Tucuman. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina. Universidad Nacional de Catamarca. Facultad de Ciencias Exactas y Naturales; Argentina
Introducción y objetivos: La ubicación taxonómica de las especies de la tribu Potentilleae en Arg... more Introducción y objetivos: La ubicación taxonómica de las especies de la tribu Potentilleae en Argentina fue muy controvertida e intensamente debatida por varios autores, de tal manera que algunos fusionaron géneros, mientras que otros los reconocieron como entidades taxonómicas válidas. Estos conflictos muestran la necesidad de realizar un tratamiento taxonómico actualizado. El objetivo de este trabajo es presentar una sinopsis taxonómica actualizada de las Potentilleae en Argentina. M&M: Se recopilaron datos taxonómicos de la literatura, incluidos estudios filogenéticos, y se analizaron especímenes de la tribu Potentilleae de herbarios argentinos y extranjeros; además de material colectado a campo. Resultados y Conclusiones: En Argentina, se reconocieron 3 géneros con 5 especies y 2 formas para la tribu Potentilleae, diferenciándose en una clave dicotómica por caracteres vegetativos, florales y carpológicos. Se legitimó el nombre de los autores de una especie y se lectotipificó una...
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