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Mostrando ítems 1-20 de 21
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Advances in characterization and epidemiology of strawberry viruses and phytoplasmas in Argentina
(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 el estudio del amarillamiento del duraznero en las diferentes zonas productoras de Jujuy, Argentina
(INIA Uruguay y Facultad de Agronomía, Universidad de la República, 2021-04-06)En Jujuy existen 850 ha de durazneros (Prunus persica L.), alrededor de 800 ha se encuentran en los valles templados, donde hace unos años comenzaron a observarse plantas con síntomas de amarillamiento, enroje-cimiento, ... -
‘Ca. Phytoplasma pruni’ and ‘Ca. Phytoplasma meliae’ are affecting plum in Argentina
(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 ... -
Declinamiento del paraíso en arbolado urbano de Parera
(Agencia de Extensión Rural General Pico, INTA, 2018-03)En los últimos dos años se comenzó a observar en algunas ciudades del norte de La Pampa el amarillamiento y posterior muerte de plantas de paraíso utilizadas en el arbolado urbano. En la localidad de Parera, los responsables ... -
Detection and identification of a 16SrIII-J phytoplasma affecting cassava (Manihot esculenta Crantz) in Argentina
(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
(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
(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 ... -
Draft Genome Sequence of " Candidatus Phytoplasma pruni" (X-Disease Group, Subgroup 16SrIII-B) Strain ChTDIII from Argentina
(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 ... -
First biological data of Ceresa nigripectus [Hemiptera:Membracidae], a common treehopper on alfalfa crops in Argentina
(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 ‘Candidatus phytoplasma pyri’ strain in Argentina
(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 ... -
Genetic diversity of 16SrIII group phytoplasmas in Argentina. Predominance of subgroups 16SrIII-J and B and two new subgroups 16SrIII-W and X
(Springer, 2013-12)Twelve Argentinean 16SrIII (X-disease)-group phytoplasma strains were analyzed. Ten of them, detected in daisy (Bellis perennis), garlic (Allium sativum), ‘lagaña de perro’ (Caesalpinia gilliesii), periwinkle (Catharanthus ... -
Identification and molecular characterization of a phytoplasma associated with sunflower in Argentina
(Springer, 2014-04)Sunflower (Helianthus annuus L.) plants showing capitulum with virescence, phyllody and flower malformation, shortened internodes and abnormal branches were found in a field in Pedro Luro (Buenos Aires province, Argentina). ... -
Improving the Comprehension of Pathogenicity and Phylogeny in ‘Candidatus Phytoplasma meliae’ through Genome Characterization
(MDPI, 2024-01-11)‘Candidatus Phytoplasma meliae’ is a pathogen associated with chinaberry yellowing disease, which has become a major phytosanitary problem for chinaberry forestry production in Argentina. Despite its economic impact, no ... -
Molecular characterization of a phytoplasma of the ash yellows group occurring in strawberry (Fragaria x ananassa Duch.) plants in Argentina
(2013-01)Strawberry (Fragaria x ananassa Duch. cv. Camino Real) plants showing phyllody symptoms were detected in production fields in Bella Vista (Corrientes province, Argentina). DNA from all symptomatic samples analyzed yielded ... -
Molecular characterization of effector protein SAP54 in Bellis virescence phytoplasma (16SrIII-J)
(Springer, 2019-06-03)Phytoplasmas are wall-less bacteria with a parasitic lifestyle responsible for numerous plant diseases worldwide. Since the introduction of next generation sequencing technologies, genome wide studies of these pathogens ... -
Phytoplasmas diversity and identification of new aster yellows subgroup (16SrI) associated with weed species in Argentina
(Microbiology Society, 2020-02-03)Symptoms of phytoplasma infection were observed in different weed species, Bidens subalternans, Conyza bonariensis, Heterosperma ovatifolium and Conium maculatum, collected from diverse geographical regions in Argentina. ... -
Phytoplasmas infecting pome and stone fruits in South America and Iberian peninsula
(Indian Journals, 2018-12-10)The present review focuses on the diseases associated with phytoplasmas that affect pome and stone fruits trees in Argentina, Bolivia, Chile, Uruguay, Spain and Portugal. The advances and challenges faced by these countries ... -
Transmisión de fitoplasmas por insectos auquenorrincos capturados en viñedos en Chile
(Facultad de Ciencias Agronómicas, Universidad de Chile, 2013)Durante el año 2011, desde enero hasta mayo (excepto febrero), se realizó una prospección de insectos hemípteros auquenorrincos en viñedos infectados por fitoplasmas, dos ubicados en la Región Metropolitana (Alto Jahuel ... -
Transmission of 16SrIII-J phytoplasmas by the leafhoppers Paratanus exitiousus and Bergallia valdiviana
(Mediterranean Phytopathological Union, 2019-09)Two of the most common leafhoppers present in Chile are the Cicadellidae Paratanus exitiosus and Bergallia valdiviana. They commonly occur in vineyards of central Chile, including some vineyards infected by phytoplasmas. ... -
La "tristeza" del ajo : una enfermedad causada por fitoplasmas
(Ediciones INTA, 2015)Es frecuente que en los cultivos de ajo aparezcan plantas aisladas que cambian el color de sus hojas y luego mueran. Pueden morir cuando son jóvenes durante el otoño, o cuando son adultas durante la primavera. Si esto ...