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In Vitro and In Vivo Inhibitory Effects of Gaseous Chlorine Dioxide against Fusarium oxysporum f. sp. batatas Isolated from Stored Sweetpotato: Study II
- Source :
- The Plant Pathology Journal, Vol 35, Iss 5, Pp 437-444 (2019), The Plant Pathology Journal
- Publication Year :
- 2019
- Publisher :
- Korean Society of Plant Pathology, 2019.
-
Abstract
- Chlorine dioxide (ClO2) has been widely used as an effective disinfectant to control fungal contamination during postharvest crop storage. In this study, Fusarium oxysporum f. sp. batatas SP-f6 from the black rot symptom of sweetpotato was isolated and identified using phylogenetic analysis of elongation factor 1-α gene; we further examined the in vitro and in vivo inhibitory activities of ClO2 gas against the fungus. In the in vitro medium tests, fungal population was significantly inhibited upon increasing the concentration and exposure time. In in vivo tests, spore suspensions were drop-inoculated onto sweetpotato slices, followed by treatment using various ClO2 concentrations and treatment times to assess fungus-induced disease development in the slices. Lesion diameters decreased at the tested ClO2 concentrations over time. When sweetpotato roots were dip-inoculated in spore suspensions prior to treatment with 20 and 40 ppm of ClO2 for 0–60 min, fungal populations significantly decreased at the tested concentrations for 30–60 min. Taken together, these results showed that ClO2 gas can effectively inhibit fungal growth and disease development caused by F. oxysporum f. sp. batatas on sweetpotato. Therefore, ClO2 gas may be used as a sanitizer to control this fungus during postharvest storage of sweetpotato.
- Subjects :
- 0106 biological sciences
Fusarium oxysporum f. sp. batatas
Disinfectant
lcsh:Plant culture
Biology
01 natural sciences
chemistry.chemical_compound
Hand sanitizer
In vivo
Fusarium oxysporum
lcsh:SB1-1110
Fusarium wilt
sweetpotato
Chlorine dioxide
chlorine dioxide
biology.organism_classification
Spore
010602 entomology
Horticulture
chemistry
Postharvest
elongation factor 1-α gene
Agronomy and Crop Science
Research Article
010606 plant biology & botany
Subjects
Details
- ISSN :
- 20939280 and 15982254
- Volume :
- 35
- Database :
- OpenAIRE
- Journal :
- The Plant Pathology Journal
- Accession number :
- edsair.doi.dedup.....b9981e94e970f3f4af711cbe3959307f