First Report of Meloidogyne enterolobii Infecting Dragon Fruit (Selenicereus undatus) in México

IF 1.1 4区农林科学 Q3 PLANT SCIENCES

Journal of Phytopathology Pub Date : 2025-08-05 DOI:10.1111/jph.70143

Alejandro Salinas-Castro, Laura Navarro-de la Fuente, Dinorah Lima-Rivera, María del Carmen Núñez-Camargo, Daniel López-Lima

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引用次数: 0

Abstract

Dragon fruit is an economically important crop in Mexico. In summer 2023, severe galling symptoms were observed in a plantation in the state of Puebla. This study aimed to identify the species of root-knot nematode responsible for this damage. Red dragon fruit plants, which showed symptoms of yellowing, stunted growth and severe root galling, were collected. A single egg mass extracted from the roots was used to inoculate Rio Grande tomato plants to obtain a pure population. Morphological, morphometric and molecular (based on 28 s rDNA) analyses were used to identify the nematode species. Host suitability was confirmed by inoculation tests. Based on the results, we identified Meloidogyne enterolobii as the nematode linked to the serious symptoms seen in the field. To our knowledge, this is the first report of M. enterolobii infesting dragon fruit plants in Mexico, and based on our observations, this nematode could pose a significant threat to the crop.

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云南省火龙果（Selenicereus undatus）侵染蛲虫初报

火龙果是墨西哥重要的经济作物。2023年夏天，在普埃布拉州的一个种植园观察到严重的疼痛症状。本研究旨在鉴定造成这种损害的根结线虫的种类。收集了表现出发黄、生长发育迟缓和严重根伤症状的红龙果植株。用从根中提取的单个卵块接种里约热内卢大番茄植株，获得纯群体。利用形态学、形态计量学和分子（基于28s rDNA）分析对线虫种类进行了鉴定。通过接种试验证实了宿主的适宜性。根据结果，我们确定与现场出现的严重症状有关的线虫是肠曲裂丝线虫。据我们所知，这是墨西哥首次报道肠弧菌侵染火龙果，根据我们的观察，这种线虫可能对火龙果作物构成重大威胁。

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来源期刊

Journal of Phytopathology 生物-植物科学

CiteScore

2.90

自引率

0.00%

发文量

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.