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Mostrando ítems 1-20 de 36
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Advances in characterization and epidemiology of strawberry viruses and phytoplasmas in Argentina
Conci, Vilma Cecilia; Luciani, Cecilia Elizabeth; Merino, M.C.; Celli, Marcos Giovani; Perotto, Maria Cecilia; Torrico Ramallo, Ada Karina; Pozzi, Elizabeth Alicia; Strumia, Gisella; Dughetti, Arturo Carlos; Asinari, Florencia; Conci, Luis Rogelio; Fernandez, Franco Daniel; Salazar, Sergio Miguel; Meneguzzi, Natalia; Kirschbaum, Daniel Santiago (2017-04)The presence of systemic pathogens, such as viruses and phytoplasmas, in strawberry plants is the usual situation worldwide. More than 20 virus species and 6 phytoplasmas 16Sr groups have been cited infecting strawberries ... -
Avances en la epidemiología del “Marchitamiento de la remolacha” en regiones productoras de remolacha forrajera de Río Negro y Buenos Aires
Bongiorno, Vanina Aylén; Favere, Verónica Mariela; Baffoni, Patricia Andrea; Alessio, Florencia Ivette; Fernandez, Franco Daniel; Catalano, Inés; Conci, Luis Rogelio (Facultad de Ciencias Agropecuarias, Universidad Nacional de Córdoba, 2023-07)En Valle Medio e Inferior de Río Negro y en la región sur de la provincia de Buenos Aires se encuentra en expansión el cultivo de remolacha forrajera (Beta vulgaris var. rapacea) debido a que es una alternativa nutricional ... -
Biological and Genomic Characterisation of Curtobacterium flaccumfaciens Infecting Wheat
Fernandez, Franco Daniel; Martino, Julia Andrea; Pozzi, Elizabeth Alicia; Alberione, Enrique Javier; Tolocka, Patricia; Marquez, Nathalie; Rodriguez, Ana Valeria; Conci, Luis Rogelio; Alemandri, Vanina Maria (Wiley, 2025-02-20)Several phytopathogenic bacteria have been reported worldwide affecting wheat (Triticum aestivum L.), causing significant yield losses. Over the past 5–6 years, symptoms resembling bacterial mosaic, characterised by small ... -
Bottom-up effect of nitrogen fertilization on the density of the corn leafhopper and its impact on both disease incidence and natural parasitism
Virla, Eduardo Gabriel; Luft Albarracín, Erica B.; Díaz, Cecilia; Van Nieuwenhove, Guido Alejandro; Fernandez, Franco Daniel; Coll Aráoz, María Victoria; Melchert, Nicolás A.; Conci, Luis Rogelio; Gimenez, Maria De La Paz (Springer, 2022-04-15)The corn leafhopper Dalbulus maidis is a specialist herbivore that attacks maize in the tropical and subtropical regions of the Americas. It is the vector of three relevant plant pathogens that are responsible for severe ... -
‘Ca. Phytoplasma pruni’ and ‘Ca. Phytoplasma meliae’ are affecting plum in Argentina
Bongiorno, Vanina Aylén; Alessio, Florencia Ivette; Curzel, Viviana Noemi; Nome Docampo, Claudia; Fernandez, Franco Daniel; Conci, Luis Rogelio (Springer, 2020-09-29)We report for the first time the presence of phytoplasmas in association with Plum (Prunus domestica) yellowing in Argentina. Molecular analysis of 16S rDNA gene sequence (RFLP, phylogeny) reveals the existence of two ... -
Complete genome sequence of Lettuce Witches’-Broom phytoplasma isolate LWB: a 16SrIII-X subgroup with expanding relevance in South America
Fernandez, Franco Daniel; Bongiorno, Vanina Aylén; Alessio, Florencia Ivette; Sananez, Inés; Macchiaroli, Natalia; Ingravidi, Marina Luz; Kamenetzky, Laura; Conci, Luis Rogelio (Springer, 2026-01-03)Phytoplasmas are non-cultivable, cell wall-less bacteria associated with a wide range of plant diseases worldwide and are transmitted by phloem-feeding insect vectors (Lee et al. 2000; Bertaccini et al. 2022). Traditionally, ... -
Detección molecular de Ascochyta rabiei en garbanzo (Cicer arietinum L.)
Pastor, Silvina Estela; Paccioretti, Mauro Andres; Torres, Laura; Otero, Maria Laura; Rossi, Marcelo; Taborda, Ricardo; Conci, Luis Rogelio (Asociación Argentina de Fitopatólogos (AAF), 2014-06)La “rabia o tizón de garbanzo” ha sido identificada en las áreas productoras argentinas, siendo el hongo Ascochyta rabiei su agente causal. Es la enfermedad de mayor importancia en este cultivo, ocasionando pérdidas ... -
Detection and identification of a 16SrIII-J phytoplasma affecting cassava (Manihot esculenta Crantz) in Argentina
Fernandez, Franco Daniel; Uset, Ovidio Antonio; Baumgratz, Gustavo; Conci, Luis Rogelio (Springer; Australasian Plant Pathology Society, 2018-12)Cassava plants displaying symptoms of dwarfing, witches’ broom, and chlorosis, were detected in production fields located in Misiones province Argentina. The RFLP profiles and phylogenetic analyses based on 16S rRNA and ... -
Detection and identification of a novel 16SrXIII subgroup phytoplasma associated with strawberry red leaf disease in Argentina
Fernandez, Franco Daniel; Meneguzzi, Natalia; Guzman, Fabiana; Kirschbaum, Daniel Santiago; Conci, Vilma Cecilia; Nome Docampo, Claudia; Conci, Luis Rogelio (2015-08)Strawberry red leaf phytoplasma was found in strawberry plants from production fields in Lules (Tucumán province) and Bella Vista (Corrientes province), Argentina. Characteristic strawberry red leaf symptoms were stunting, ... -
Detection and molecular characterization of a phytoplasma affecting Prunus persica L. in Jujuy, Argentina
Fernandez, Franco Daniel; Guzman, Fabiana; Curzel, Viviana; Bejarano, Noemí; Conci, Luis Rogelio (Springer, 2013-04)Peach (Prunus persica L.) plants with symptoms of yellowing, reddening, curling and leaf necrosis, premature defoliation and internode shortening were observed in production fields in Jujuy province (Argentina). A phytoplasma ... -
Determinacion de Ascochyta rabiei en semillas de garbanzo (Cicerarietinum) por Agar plate test y PCR-RFLP
Pastor, S.; Rossi, Marcelo; Torres, Laura; Paccioretti, Mauro Andres; Taborda, Ricardo; Otero, Maria Laura; Conci, Luis Rogelio; Guzman, Fabiana; Fernandez, Franco Daniel (Asociación Argentina de Fitopatólogos (AAF), 2014-06)Actualmente las zonas de producción de garbanzo se encuentran entre 20 º y 33 º Lat S - Salta -Tucumán - Santiago del Estero - Catamarca - Córdoba - San Luis - Santa Fe - Buenos Aires -
Development of a non-radioactive molecular hybridization probe for detecting Strawberry mottle virus in strawberry
Asinari, Florencia; Cafrune, Eva Encarnacion; Guzman, Fabiana; Conci, Luis Rogelio; Conci, Vilma Cecilia (2016)The vegetative propagation of strawberries favors transmission of systemic pathogens, such as viruses, which are one of the main yield-limiting factors for this crop. More than 20 viruses have been described as infecting ... -
Draft Genome Sequence of " Candidatus Phytoplasma pruni" (X-Disease Group, Subgroup 16SrIII-B) Strain ChTDIII from Argentina
Fernandez, Franco Daniel; Zübert, Christina; Huettel, Bruno; Kube, Michael; Conci, Luis Rogelio (American Society for Microbiology, 2020-08-24)Herein, we report the draft genome sequence of “Candidatus Phytoplasma pruni” strain ChTDIII (subgroup 16SrIII-B). The final assembly consists of 790,517 nucleotides organized in 67 contigs (minimal size, 1 kb), with a G+C ... -
Draft Genome Sequence of ‘Candidatus Phytoplasma pyri’ Strain P1, the Causal Agent of Pear Decline Disease
Alessio, Florencia Ivette; Bongiorno, Vanina Aylén; von Backzo, Oscar Hernan; Marcone, Carmine; Conci, Luis Rogelio; Fernandez, Franco Daniel (The American Phytopathological Society, 2025-08-21)This study reports the draft genome of ‘Candidatus Phytoplasma pyri’ strain P1, isolated from Argentina. The genome assembly consisted of 17 contigs, with a total length of 575,431 bp, a GC content of 20.35%, and 125× ... -
¿Es el MaizeBushyStunt Phytoplasma (MBS) un jugador secundario en el complejo de achaparramientodel maíz? Datos de la campaña 2023-2024 en Argentina
Alessio, Florencia Ivette; Bongiorno, Vanina Aylén; Brandimarte, Maria Soledad; Quiroga, María; Ferrer Lanfranchi, Mariana; Torrico Ramallo, Ada Karina; Conci, Luis Rogelio; Fernandez, Franco Daniel (Asociación Argentina de Fitopatólogos (AAF), 2024-09-18)Durante la campaña 2023-2024, el achaparramiento del maíz (AM) ha representado una emergencia a nivel nacional en Argentina, con pérdidas estimadas de entre el 10-15% de la cosecha. Históricamente, esta problemática se ... -
First biological data of Ceresa nigripectus [Hemiptera:Membracidae], a common treehopper on alfalfa crops in Argentina
Perez Grosso, Tomas; Conci, Luis Rogelio; Saavedra Pons, Amalia Beatriz; Marino, Ana María; Virla, Eduardo G. (2014-12)Alfalfa (Medicago sativa L.; Fabaceae) is essential for argentinean agricultural development, but diseases like “witches´ broom», caused by the ArAWB phytoplasma, are limiting factors for the production of this crop. ... -
First report of a 16SrIII-X phytoplasma associated with Lactuca sativa witches’-broom in Argentina
Fernandez, Franco Daniel; Carloni, Edgardo José; Alessio, Florencia Ivette; Bongiorno, Vanina Aylén; Conci, Luis Rogelio (Wiley, 2022)During the summer of 2022, symptoms of witches’-broom, flowering malformation and redness were observed in lettuce plants (Lactuca sativa) in fields in Cordoba Province, Argentina (Fig. 1a). In the same fields, garlic ... -
First report of a ‘Candidatus phytoplasma pyri’ strain in Argentina
Fernandez, Franco Daniel; Marini, Diana Beatriz; Farrando, Roberto Jes; Conci, Luis Rogelio (Springer, 2017-12)During the 2015 growing season, peach plants (Prunus persica) showing chlorotic, curling leaves and midrib thickening were detected in production fields in Mendoza province (Midwest region, Argentina). These symptoms ... -
First report of Xanthomonas prunicola causing bacterial leaf streaks on wheat in Argentina
Martino, Julia Andrea; Fernandez, Franco Daniel; Pozzi, Elizabeth Alicia; Alberione, Enrique Javier; Bainotti, Carlos Tomas; Marquez, Nathalie; Tolocka, Patricia; Salines, Nicolas; Gomez, Dionisio Tomas; Donaire, Guillermo Manuel; Conci, Luis Rogelio; Alemandri, Vanina Maria (American Phytopathological Society, 2022-06-13)Since 2018, bacterial-like symptoms, such as leaf streaks were observed on wheat plants (Triticum aestivum L.) in Córdoba province in Argentina, with 1 to 5% of disease incidence. Samples of wheat stem and spike collected ... -
First report of ‘Candidatus Phytoplasma pyri’-related strain causing pear decline in Argentina
Fernandez, Franco Daniel; Conci, Luis Rogelio (Elsevier, 2019-07)Pear decline (PD) is an important disease affecting pear production worldwide and “Candidatus Phytoplasma pyri” (subgroup 16SrX-C) is the etiological agent of this disease. In Argentina, typical symptomatology of PD ...