Pythium tracheiphilum 在巴西 Brasília-DF 导致莴苣叶片腐烂和枯萎

IF 1.1 4区 农林科学 Q3 PLANT SCIENCES Journal of Phytopathology Pub Date : 2024-06-14 DOI:10.1111/jph.13334
Elenice Alves Barboza, Luiz Henrique Rocha Lopes, Carmen Lidia Amorim Pires-Zottarelli, Cléia Santos Cabral, Willie Anderson dos Santos Vieira, Maurício Rossato, Fabiana Helena Silva Ribeiro, Ailton Reis
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引用次数: 0

摘要

Pythium tracheiphilum 是一种寄主范围很窄的卵菌,最早出现在意大利的莴苣上。随后,许多其他国家也报道了这种病原体。2015 年至 2019 年期间,从巴西巴西利亚联邦区(Brasilia-DF)不同农村地区的商品田中采集到的具有叶片腐烂、枯萎和维管束坏死症状的莴苣植株中回收了腐霉菌分离株。根据形态学和分子遗传学分析,这些分离物被鉴定为 P. tracheiphilum。对 4 个 P. tracheiphilum 分离物进行的致病性试验证实,这些分离物对松心莴苣品种的脱落叶片具有致病性。这是巴西首次报道 P. tracheiphilum 感染莴苣。
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Pythium tracheiphilum causing leaf rot and wilting in lettuce in Brasília-DF, Brazil

Pythium tracheiphilum is a narrow host range oomycete first described infecting lettuce in Italy. Subsequently, the pathogen was reported in many other countries. From 2015 to 2019, Pythium isolates were recovered from lettuce plants with symptoms of leaf rot, wilting and vascular necrosis, collected from commercial fields in different rural localities of Brasilia-DF, Brazil. The isolates were identified as P. tracheiphilum based on morphological and molecular genetic analysis. Pathogenicity tests conducted with four P. tracheiphilum isolates confirmed that the isolates were pathogenic to detached leaves of a loose-hearted lettuce cultivar. This is the first report of P. tracheiphilum infecting lettuces in Brazil.

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来源期刊
Journal of Phytopathology
Journal of Phytopathology 生物-植物科学
CiteScore
2.90
自引率
0.00%
发文量
88
审稿时长
4-8 weeks
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.
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