ORIGINAL RESEARCH article
Front. Plant Sci.
Sec. Plant Pathogen Interactions
Volume 16 - 2025 | doi: 10.3389/fpls.2025.1634557
This article is part of the Research TopicWomen in Plant Pathogen Interactions: 2025View all articles
Fungal pathogens causing postharvest anthracnose and fruit rot in Indian jujube (Ziziphus mauritiana) from northern Thailand and their fungicide response profiles
Provisionally accepted
- 1University of Phayao, Mueang Phayao District, Thailand
- 2Center of Excellence in Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- 3Chiang Mai University, Chiang Mai, Thailand
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Indian jujube (Ziziphus mauritiana) is an economically important crop in Thailand. During 2024-2025, anthracnose and rot symptoms were observed on postharvest Indian jujube fruits in northern Thailand. Thus, this study aimed to identify the causal agents and evaluate their fungicide response. Nine fungal strains were isolated and identified as Colletotrichum fructicola, C. siamense, and Fusarium weifangense through morphological and multi-gene phylogenetic analyses. Pathogenicity tests confirmed C. fructicola and C. siamense cause postharvest anthracnose, while F. weifangense causes fruit rot. Fungicide assays revealed that C. siamense was completely inhibited by copper oxychloride and copper hydroxide. with captan, cyproconazole, difenoconazole + azoxystrobin, and difenoconazole showing effectiveness against most strains. Colletotrichum fructicola was most effectively inhibited by difenoconazole, although no fungicide achieved complete inhibition. Fusarium weifangense was fully inhibited by carbendazim, copper hydroxide, and cyproconazole, but was not suppressed by azoxystrobin. This represents the first report of C. fructicola and C. siamense causing anthracnose in Indian jujube in Thailand, and the first worldwide report of F. weifangense causing fruit rot in this crop. These findings provide crucial insights for developing effective management strategies against postharvest diseases of Indian jujube.
Keywords: Crop plant, Fungal disease, fungicide response, Pathogen identification, Postharvest disease
Received: 24 May 2025; Accepted: 24 Jun 2025.
Copyright: © 2025 Nuangmek, Suwannarach, Sukyai, Khitka and Kumla. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Nakarin Suwannarach, Center of Excellence in Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
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