巴西火龙果炭疽病病原菌炭疽菌的鉴定及致病性

IF 2.8 3区农林科学 Q2 PLANT SCIENCES

Physiological and Molecular Plant Pathology Pub Date : 2025-03-14 DOI:10.1016/j.pmpp.2025.102657

Maria Hilma dos Santos , Jaqueline Figueredo de Oliveira Costa , Kevison Romulo da Silva França , Taciana Ferreira dos Santos , Mayra Machado de Medeiros Ferro , Maruzanete Pereira de Melo , Victor Breno Campelo Lima , Jorge Luiz Xavier Cunha , Gaus Silvestre de Andrade Lima , Iraildes Pereira Assunção

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引用次数: 0

摘要

火龙果（火龙果属）是一种热带水果，原产于墨西哥南部、危地马拉和哥斯达黎加。在巴西阿拉戈斯州和巴伊亚州火龙果产区的水果和枝上观察到炭疽病症状。从有症状的组织中分离得到炭疽菌属真菌。基于形态和多基因分析（GAPDH、ACT、TUB2、ITS和ApMAT），分离菌株鉴定为C. chrysophilum、C. siamense、C. theobromicola和C. truncatum。致病性试验表明，所有分离株均在果实和枝上引起炭疽病特征的褐色凹陷病损。这是全球首次报道在火龙果上发现引起炭疽病的双歧杆菌（C. chrysophilum）和C. theobromicola。

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Characterization and pathogenicity of Colletotrichum species causing anthracnose on pitaya (Hylocereus spp.) in Brazil

Pitaya (Hylocereus spp.) is a tropical fruit native to southern Mexico, Guatemala, and Costa Rica. Anthracnose symptoms were observed on fruits and cladodes in the pitaya-producing regions of Alagoas and Bahia, Brazil. Fungal isolates from the Colletotrichum genus were obtained from symptomatic tissue. Based on morphological and multigenic analyses (GAPDH, ACT, TUB2, ITS and ApMAT), the isolates were identified as C. chrysophilum, C. siamense, C. theobromicola and C. truncatum. Pathogenicity tests revealed that all isolates caused brown, depressed lesions characteristic of anthracnose on fruit and cladodes. This is the first report of C. chrysophilum and C. theobromicola causing anthracnose on pitaya globally.

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来源期刊

Physiological and Molecular Plant Pathology 生物-植物科学

CiteScore

4.30

自引率

7.40%

发文量

130

审稿时长

38 days

期刊介绍： Physiological and Molecular Plant Pathology provides an International forum for original research papers, reviews, and commentaries on all aspects of the molecular biology, biochemistry, physiology, histology and cytology, genetics and evolution of plant-microbe interactions. Papers on all kinds of infective pathogen, including viruses, prokaryotes, fungi, and nematodes, as well as mutualistic organisms such as Rhizobium and mycorrhyzal fungi, are acceptable as long as they have a bearing on the interaction between pathogen and plant.