标题大黄花炭疽病菌致花坏死斑初报。

IF 1.9 4区 生物学 Q3 MICROBIOLOGY
Victória Oasis Regis Lessa Matos, Athus Diego Azevedo Silva, André Luiz Firmino, Olinto Liparini Pereira
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引用次数: 0

摘要

在巴西特有的2,692种兰花中,由于其花朵的美丽和植物的大小,莱利亚·特尼布萨具有重要的经济价值。尽管被列为濒危物种,但它是最受栽培的Laelia物种之一。炭疽病是影响兰花的主要病害之一。由于有利的温度和湿度条件,导致该疾病的真菌炭疽菌(Colletotrichum sp.)可以在巴西的兰花中有效地传播。迄今为止,在世界各地的各种兰花中已鉴定出46种炭疽菌是炭疽病的病原。2018年12月,在巴西米纳斯吉拉斯州联邦大学(UFV)咖啡苗圃的兰花中,收集到了带有坏死斑点的黑叶兰(兰科)的花朵。基于形态特征和系统发育分析,利用贝叶斯推理方法对真菌进行鉴定,并利用每个区域(ACT、CHS、GAPDH、ITS和TUB2)的序列和串联序列进行最大似然方法。这种疾病是由一种已知会感染中国白芨、巴拿马Cycnoches aureum、泰国和美国Dendrobium sp.、英国蝴蝶兰(Phalaenopsis sp.)、美国x Ascocenda sp.和留尼汪岛(Reunion Island)的兰花炭疽菌(Colletotrichum orchidophilum)引起的,它是造成planifolia上黑斑的病原体。这是巴西首次报道的兰科芽孢杆菌(C. orchidophilum),也是世界上第一个在莱利亚(Laelia)引起炭疽病的菌株。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
First report of Colletotrichum orchidophilum causing necrotic spots on flowers of Laelia tenebrosa.

Among the 2,692 orchid species endemic to Brazil, Laelia tenebrosa has significant economic value because of the beauty of its flowers and the size of the plant. Despite being listed as endangered, it is one of the most cultivated Laelia species. Anthracnose is one of the main diseases affecting orchids. The fungus responsible for the disease, Colletotrichum sp., can spread efficiently in orchid collections in Brazil owing to favorable temperature and humidity conditions. To date, 46 species of Colletotrichum have been identified as the causal agents of anthracnose in various orchid species worldwide. In December 2018, flowers of Laelia tenebrosa (Orchidaceae) with necrotic spots were collected from the orchidarium maintained at the coffee nursery of the Universidade Federal de Viçosa (UFV), State of Minas Gerais, Brazil. The fungus was identified based on morphological characteristics and phylogenetic analyses using Bayesian inference, and the maximum likelihood method was performed using sequences from each region (ACT, CHS, GAPDH, ITS, and TUB2) and concatenated sequences. The disease is caused by Colletotrichum orchidophilum, a species known to infect Bletilla striata in China, Cycnoches aureum in Panama, Dendrobium sp. in Thailand and the United States, Phalaenopsis sp. in the United Kingdom, x Ascocenda sp. in the United States, and Reunion Island as the causal agent of black spots on Vanilla planifolia. For the first time, C. orchidophilum was reported in Brazil and was the first to cause anthracnose in Laelia worldwide.

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来源期刊
Brazilian Journal of Microbiology
Brazilian Journal of Microbiology 生物-微生物学
CiteScore
4.10
自引率
4.50%
发文量
216
审稿时长
1.0 months
期刊介绍: The Brazilian Journal of Microbiology is an international peer reviewed journal that covers a wide-range of research on fundamental and applied aspects of microbiology. The journal considers for publication original research articles, short communications, reviews, and letters to the editor, that may be submitted to the following sections: Biotechnology and Industrial Microbiology, Food Microbiology, Bacterial and Fungal Pathogenesis, Clinical Microbiology, Environmental Microbiology, Veterinary Microbiology, Fungal and Bacterial Physiology, Bacterial, Fungal and Virus Molecular Biology, Education in Microbiology. For more details on each section, please check out the instructions for authors. The journal is the official publication of the Brazilian Society of Microbiology and currently publishes 4 issues per year.
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