María Alejandra Favaro, Roxana Lorena Maumary, Alejandra Lutz, Marcelo Carlos Soressi, Eleodoro Del Valle, Laura Noemí Fernandez
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引用次数: 0
摘要
胡萝卜(Daucus carota L. subsp.sativus)种植在阿根廷非常重要,圣菲省的加雷省是主要产区。近年来,各种胡萝卜栽培品种都出现了干腐病症状,导致大量田间损失和收获后丢弃。包括镰刀菌在内的几种土传病原体与全球类似的胡萝卜病害有牵连。本研究旨在确定导致阿根廷中部胡萝卜干腐病的具体病原菌,以便制定有针对性的病害管理策略。研究人员从加雷省的田间采集了有症状的胡萝卜样本。从受感染的组织中获得了真菌分离物,并对其进行了形态学和分子分析。进行了致病性测试,以确认分离物导致胡萝卜出现病害症状的能力。根据形态学和分子鉴定,分离物被确定为尼伦伯格镰刀菌、三肽镰刀菌和茄镰刀菌。致病性试验表明,这三种镰刀菌都能引起胡萝卜干腐病症状。这项研究是阿根廷首次报道尼伦伯格镰刀菌、三胜肽镰刀菌和茄镰刀菌导致胡萝卜干腐病。
Fusarium Species Causing Dry Rot of Carrot in Central Argentina
Carrot (Daucus carota L. subsp. sativus) cultivation is important in Argentina, with the Garay department in Santa Fe province being a key production area. In recent years, dry rot symptoms have afflicted various carrot cultivars, resulting in substantial field losses and postharvest discards. Several soilborne pathogens, including Fusarium species, have been implicated in similar carrot diseases globally. This study aimed to identify the specific causal agent responsible for dry rot in carrots in central Argentina to enable targeted disease management strategies. Samples of symptomatic carrots were collected from fields in the Garay department. Fungal isolates were obtained from the infected tissue and subjected to morphological and molecular analyses. Pathogenicity tests were conducted to confirm the ability of the isolates to cause disease symptoms in carrots. Based on morphological and molecular identification, isolates were identified as Fusarium nirenbergiae, Fusarium triseptatum and Fusarium solani. Pathogenicity tests demonstrated that the three Fusarium species were capable of causing dry rot symptoms in carrots. This study represents the first report of Fusarium nirenbergiae, Fusarium triseptatum and Fusarium solani causing dry rot in carrots in Argentina.
期刊介绍:
Journal of Phytopathology publishes original and review articles on all scientific aspects of applied phytopathology in agricultural and horticultural crops. Preference is given to contributions improving our understanding of the biotic and abiotic determinants of plant diseases, including epidemics and damage potential, as a basis for innovative disease management, modelling and forecasting. This includes practical aspects and the development of methods for disease diagnosis as well as infection bioassays.
Studies at the population, organism, physiological, biochemical and molecular genetic level are welcome. The journal scope comprises the pathology and epidemiology of plant diseases caused by microbial pathogens, viruses and nematodes.
Accepted papers should advance our conceptual knowledge of plant diseases, rather than presenting descriptive or screening data unrelated to phytopathological mechanisms or functions. Results from unrepeated experimental conditions or data with no or inappropriate statistical processing will not be considered. Authors are encouraged to look at past issues to ensure adherence to the standards of the journal.