Etiology of Foliar Blight of Indian Paintbrush (Castilleja tenuiflora) in Mexico.

IF 4.1 2区生物学 Q2 MICROBIOLOGY

Microorganisms Pub Date : 2024-08-20 DOI:10.3390/microorganisms12081714

Alma Rosa Solano-Báez, Gabriela Trejo-Tapia, Miroslav Kolařík, Jossue Ortiz-Álvarez, José Luis Trejo-Espino, Guillermo Márquez-Licona

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引用次数: 0

Abstract

Castilleja tenuiflora is a native perennial plant used in traditional Mexican medicine. In June 2022, leaf blight symptoms were observed in a wild population of C. tenuiflora plants. Disease incidence was 80% and disease intensity reached up to 5% of the leaf area. Currently, there are no reports of pathogens causing leaf blight in this plant; therefore, this work aimed to identify the fungi responsible for the disease. The fungi recovered from the diseased tissue were characterized by means of pathogenicity tests and cultural, morphological, and molecular characterization. The information obtained revealed that Alternaria alternata and Alternaria gossypina are the pathogens responsible for the disease. This is the first report implicating species of Alternaria in causing leaf blight of C. tenuiflora in Mexico, as well as the first report of Alternaria gossypina also in Mexico. These pathogens may threaten the in situ conservation of native C. tenuiflora populations and limit their in vitro propagation. Future research lines should focus on determining the effect of these pathogens on metabolite production.

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墨西哥印度画眉草（Castilleja tenuiflora）叶枯病的病因。

Castilleja tenuiflora 是一种本地多年生植物，用于墨西哥传统医学。2022 年 6 月，在 C. tenuiflora 植物的野生种群中观察到叶枯病症状。病害发生率为 80%，病害强度高达叶面积的 5%。目前，还没有关于导致该植物叶枯病的病原体的报道；因此，这项工作旨在确定导致该疾病的真菌。通过致病性试验以及培养、形态和分子鉴定，对从病组织中提取的真菌进行了鉴定。获得的信息表明，交替丝核菌（Alternaria alternata）和戈西皮纳丝核菌（Alternaria gossypina）是导致该病的病原菌。这是墨西哥第一份关于交替孢属物种导致 C. tenuiflora 叶枯病的报告，也是墨西哥第一份关于 Alternaria gossypina 的报告。这些病原体可能会威胁到原生 C. tenuiflora 种群的就地保护，并限制其离体繁殖。未来的研究方向应侧重于确定这些病原体对代谢物生产的影响。

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来源期刊

Microorganisms Medicine-Microbiology (medical)

CiteScore

7.40

自引率

6.70%

发文量

2168

审稿时长

20.03 days

期刊介绍： Microorganisms (ISSN 2076-2607) is an international, peer-reviewed open access journal which provides an advanced forum for studies related to prokaryotic and eukaryotic microorganisms, viruses and prions. It publishes reviews, research papers and communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Electronic files and software regarding the full details of the calculation or experimental procedure, if unable to be published in a normal way, can be deposited as supplementary electronic material.