First report of Neopestalotiopsis rhododendri causing dragon fruit (Selenicereus monacanthus) stem spot in China

IF 2.5 2区农林科学 Q1 AGRONOMY

Crop Protection Pub Date : 2025-06-29 DOI:10.1016/j.cropro.2025.107326

Qing Guo , Hong Zhang , Kexin Cheng , Kunmin Yu , Yulan Jiang

引用次数: 0

Abstract

Selenicereus monacanthus, commonly known as dragon fruit, is a nutritious fruit cultivated worldwide and holds significant economic importance in China. Stem spot is a prevalent disease affecting dragon fruit. In September 2023, irregular yellow spots were observed on the stems of dragon fruit in plantations located in Zhenning County, Guizhou Province, China, with an incidence rate of 21 %. This disease has severely impacted the growth of dragon fruit. To identify the pathogen responsible, we conducted isolation and pathogenicity studies. Through morphological characterization, phylogenetic analysis (ITS, tub2, and tef1-α), and pathogenicity tests, we determined the isolated pathogen as Neopestalotiopsis rhododendri. Our study represents the first report indicating that N. rhododendri can cause stem blotch disease in dragon fruit and provides a solid theoretical basis for the prevention and control of the disease.

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中国火龙果（Selenicereus monacanthus）茎斑病新直立多毛opsis rhododendri的首次报道

Selenicereus monacanthus，俗称火龙果，是一种营养丰富的水果，在世界各地种植，在中国具有重要的经济意义。茎斑病是影响火龙果的一种普遍病害。2023年9月，在中国贵州省镇宁县的火龙果人工林中，发现火龙果茎部出现不规则黄斑，发生率为21%。该病害严重影响火龙果的生长。为了确定病原，我们进行了分离和致病性研究。通过形态学鉴定、系统发育分析（ITS、tub2和tef1-α）和致病性试验，我们确定分离的病原菌为新estestalotiopsis rhododendri。本研究首次报道了杜鹃属植物可引起火龙果茎斑病，为火龙果茎斑病的防治提供了坚实的理论依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Crop Protection 农林科学-农艺学

CiteScore

6.10

自引率

3.60%

发文量

200

审稿时长

29 days

期刊介绍： The Editors of Crop Protection especially welcome papers describing an interdisciplinary approach showing how different control strategies can be integrated into practical pest management programs, covering high and low input agricultural systems worldwide. Crop Protection particularly emphasizes the practical aspects of control in the field and for protected crops, and includes work which may lead in the near future to more effective control. The journal does not duplicate the many existing excellent biological science journals, which deal mainly with the more fundamental aspects of plant pathology, applied zoology and weed science. Crop Protection covers all practical aspects of pest, disease and weed control, including the following topics: -Abiotic damage- Agronomic control methods- Assessment of pest and disease damage- Molecular methods for the detection and assessment of pests and diseases- Biological control- Biorational pesticides- Control of animal pests of world crops- Control of diseases of crop plants caused by microorganisms- Control of weeds and integrated management- Economic considerations- Effects of plant growth regulators- Environmental benefits of reduced pesticide use- Environmental effects of pesticides- Epidemiology of pests and diseases in relation to control- GM Crops, and genetic engineering applications- Importance and control of postharvest crop losses- Integrated control- Interrelationships and compatibility among different control strategies- Invasive species as they relate to implications for crop protection- Pesticide application methods- Pest management- Phytobiomes for pest and disease control- Resistance management- Sampling and monitoring schemes for diseases, nematodes, pests and weeds.