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Brassica oleracea var. sabellica: A New Host of Agroathelia delphinii in Soilless Cultivation Systems in Central Thailand

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Publicado en:Horticulturae vol. 11, no. 4 (2025), p. 411
Autor principal: Santiti, Bincader
Otros Autores: Ratiya, Pongpisutta, Thipwara, Tiansawang, Sirorat, Khienman, Boonyaritthongchai Panida, Phuntumart Vipaporn, Chainarong, Rattanakreetakul
Publicado:
MDPI AG
Materias:
Thailand
United States > US
rRNA
Fungi
Pathogens
Brassica
Phylogenetics
Sequence analysis
Pathogenicity
Nutritive value
Ribosomal DNA
Plant diseases
Vegetables
Genetic testing
Stem rot
Physical characteristics
Disease management
Environmental control
Nucleotides
Stems
Cultivation
Multilocus sequence typing
Seedlings
Kale
Morphology
Brassica oleracea sabellica
Environmental
Acceso en línea:Citation/Abstract
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Resumen:Kale (Brassica oleracea var. sabellica), known for its high nutritional value and health benefits, has gained significant popularity. Recently, kale grown in soilless systems has also become increasingly popular, as these systems offer better environmental control and improve overall quality, making them an ideal method for cultivating kale. However, in 2023–2024, several kale plants exhibited severe symptoms of seedling and stem rot leading to losses of over 70% in both quality and yield. In this study, the infectious isolates were obtained from stem rot kale grown in soilless cultivation greenhouses across three provinces in central Thailand. The pathogens were identified through a combination of morphological characteristics and molecular techniques, utilizing nucleotide sequences from the internal transcribed spacer (ITS1-5.8S-ITS2) and large subunit ribosomal RNA (LSU rDNA). Pathogenicity tests and Koch’s postulates on 2-month-old kale plants confirmed that the fungus was responsible for causing brown stem lesions and rot. Morphological features and multilocus sequence analysis (MLSA) identified the pathogen as Agroathelia delphinii. This research represents the first report of A. delphinii infecting kale in Thailand, offering crucial insights for accurate disease diagnosis and the development of effective management strategies in soilless cultivation systems, which is essential for improving productivity in increasingly variable environments.
ISSN:2311-7524
DOI:10.3390/horticulturae11040411
Fuente:Agriculture Science Database