Eradicant and curative treatments of hexanal against peach brown rot

Baggio, Juliana Silveira; Lourenço, Silvia de Afonseca; Amorim, Lílian

doi:10.1590/s0103-90162014000100010

Cited by 11 publications

(7 citation statements)

References 15 publications

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“…It should be noted that the scoring was based only on true disease symptoms rather than normal discoloration which generally appears in the banana. Earlier studies have shown that hexanal vapor treatment in peach fruits inhibited the fungal growth such as C. gloeosporioides (Song et al, 2007), M. fructicola, and M. laxa in peaches (Baggio et al, 2014) and mold such as Penicillium expansum in pear fruits (Neri et al, 2006). Apples exposed to 900 μl/l hexanal vapor for 48 h showed signs of phytotoxicity, expressed as surface browning (Fan et al, 2006).…”

Section: Discussionmentioning

confidence: 98%

Hexanal Vapor Induced Resistance against Major Postharvest Pathogens of Banana (Musa acuminata L.)

et al. 2020

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Hexanal, a C-6 aldehyde has been implicated to have antimicrobial properties. Hence, this study was conducted to determine the antifungal activities of hexanal vapor against major postharvest pathogens of banana viz., Colletotrichum gloeosporioides and Lasiodiplodia theobromae. The pathogens were cultured in vitro and exposed to hexanal vapor at 600, 800, 1,000 and 1,200 ppm. Mycelial growth of both fungal pathogens were inhibited completely at 800 ppm and the incidence of anthracnose and stem-end rot diseases reduced by 75.2% and 80.2%, respectively. The activities of peroxidase, polyphenol oxidase, phenylalanine ammonia-lyase and glucanase had transiently increased in hexanal vapor treated banana by 5 to 7 days and declined thereafter. Postharvest treatment of banana with hexanal vapor resulted in phospholipase D inhibition and also resulted in cell wall thickening of the treated fruit, which impeded the penetration of the pathogenic spores. This was further confirmed by scanning electron micrographs. The defense-related protein intermediaries had increased in hexanal vapor treated banana fruit, which suggests induced resistance against C. gloeosporioides and L. theobromae, via., the phenylpropanoid pathway which plays a significant role in hindering the pathogen quiescence. Delayed ripening due to inhibition of phospholipase D enzyme, inhibition of mycelial growth and induced systemic resistance by defense enzymes collectively contributed to the postharvest disease reduction and extended shelf life of fruit.

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Section: Discussionmentioning

confidence: 98%

Hexanal Vapor Induced Resistance against Major Postharvest Pathogens of Banana (Musa acuminata L.)

et al. 2020

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“…Hexanal has also proven effective in preventing fungal growth during storage, inhibiting spore production, reducing fruit spoilage and decay incidence, and increasing PME activity, which helps maintain fruit quality by regulating enzymatic activities (Baggio et al, 2014;Gill et al, 2016). Hexanal has demonstrated potential in improving shelf life and biochemical properties of various fruits, including apples, bananas, cherries, strawberries, and pears (Paliyath et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

Effect of hexanal treatment on fruit qualities and antioxidant activities on ‘Umran’ Indian jujube fruit during cold storage

Sharma

Bons

Jawandha

et al. 2023

Preprint

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′Umran′ Indian jujube is a widely grown cultivar due to its marketable quality and productivity, resulting in excellent market value. Despite its high quality, the product′s short shelf life poses a challenge for transportation, even within the domestic market. Hexanal with three concentrations (0.15%, 0.20%, and 0.25%) was applied to the fruit of ′Umran′ Indian jujube at both pit hardening and color break stages. Harvested fruits were stored for 28 days in a cold chamber of 7.5±1°C and 90-95% RH. The changes in fruit qualities were assessed with physicochemical characteristics, bioactive compounds, and enzymatic antioxidant activities every seven days. Fruits treated with hexanal of 0.20% reduced fruit weight loss and spoilage and maintained fruit firmness, soluble solids content, carotenoid content, and antioxidant activity. The activities of cell wall degrading enzymes investigated were suppressed. Of the antioxidant activities, superoxide dismutase and peroxidase were positively activated. Therefore, these results indicated that pre-harvest application of hexanal 0.20% improved physiochemical characteristics, maintained bioactive compounds, antioxidant enzyme activities, and extended the shelf life of Indian jujube fruits up to 21 days during cold storage.

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“…Mycelial growth inhibition was evaluated as previously described (Baggio et al, 2014;Chen et al, 2014). For subculturing, varying concentrations of fungicidal agents were added to 90-mm Petri dishes filled with PDA (cooled to ~50°C) before it solidified to obtain M451 0.1%, M451 0.05%, NaH 2 PO 4 0.1%, or fludioxonil 0.25% plates.…”

Section: Mycelial Growth Inhibitionmentioning

confidence: 99%

“…Spore production was determined as previously described (Baggio et al, 2014). To test F. oxysporum spore production, 3 mm diameter mycelial plugs were taken from the edge of a five-day-old colony and transferred into the control and test tubes.…”

Section: Spore Productionmentioning

confidence: 99%

Antifungal activity of a novel synthetic polymer M451 against phytopathogens

Tetz¹,

Кардава²,

Краснов³

et al. 2023

Front. Microbiol.

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Phytopathogenic fungi are the predominant causal agents of plant diseases. Available fungicides have substantial disadvantages, such as being insufficiently effective owing to intrinsic tolerance and the spread of antifungal resistance accumulating in plant tissues, posing a global threat to public health. Therefore, finding a new broad-spectrum fungicide is a challenge to protect plants. We studied the potency of a novel antimicrobial agent, M451, a 1,6-diaminohexane derivative, against different phytopathogenic fungi of the Ascomycota, Oomycota, and Basidiomycota phyla. M451 exhibited significant antifungal activity with EC50 values from 34–145 μg/mL. The minimal fungicidal concentration against Fusarium oxysporum ranged from 4 to 512 μg/mL depending on the exposure times of 5 min to 24 h. M451 has the highest activity and significantly lower exposure times compared to different polyene, azole, and phenylpyrrole antifungals. The conidial germination assay revealed that M451 induced 99 and 97.8% inhibition against F. oxysporum within 5 min of exposure to 5,000 and 500 μg/mL, respectively. Germ tube elongation, spore production, and spore germination were also significantly inhibited by M451 at concentrations of ≥50 μg/mL. Based on the broad spectrum of antifungal effects across different plant pathogens, M451 could be a new chemical fungicide for plant disease management.

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Eradicant and curative treatments of hexanal against peach brown rot

Cited by 11 publications

References 15 publications

Hexanal Vapor Induced Resistance against Major Postharvest Pathogens of Banana (Musa acuminata L.)

Hexanal Vapor Induced Resistance against Major Postharvest Pathogens of Banana (Musa acuminata L.)

Effect of hexanal treatment on fruit qualities and antioxidant activities on ‘Umran’ Indian jujube fruit during cold storage

Antifungal activity of a novel synthetic polymer M451 against phytopathogens

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