Suppression of Botrytis bunch rot in Chardonnay grapevines by induction of host resistance and fungal antagonism

Regliński, T.; Elmer, P. A. G.; Taylor, J. T.; Parry, Frank; Marsden, Ron; Wood, P.N.

doi:10.1071/ap05057

Cited by 33 publications

(19 citation statements)

References 25 publications

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“…Elmer et al (2005) found that the product BOTRY-Zen was effective to control B. cinerea in grape. Reglinski et al (2005) suggested the combination of chemical elicitor, 5-chlorosalicylic acid (5CSA) and U. oudemansii to control Botrytis bunch rot in Chardonnay grapevines. Isolation of pathogens from the control grape and strawberry fruits showed that the fungus B. cinerea was the dominant pathogen in 82% (246 of 300 isolates) and 87% (261 of 300 isolates) of cases, respectively.…”

Section: Resultsmentioning

confidence: 99%

Biological control of fruit rots on strawberry and grape by BOTRY-Zen

Thomidis

Pantazis

Navrozidis

et al. 2014

New Zealand Journal of Crop and Horticultural Science

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Fruit rots are some of the most important diseases of grape and strawberry. With recent public concern regarding pesticide residues on fruit, there is a need for alternative disease management practices that will reduce the risk to consumers. The main aim of this study was to investigate the effectiveness of the commercial product BOTRY-Zen (active ingredient Ulocladium oudemansii [U3 strain]) to control strawberry and grape fruit rots. BOTRY-Zen at 6 g/L reduced significantly the percentage of rotted fruit in comparison with the untreated control. However, its effectiveness was significantly less than that of the fungicide Switch 25/37.5 WG (fludioxonil: cyprodinil) at a rate of 1 g/L (recommended by producer). There was no significant difference between the BOTRY-Zen at rate of 4 g/L and untreated plants. The results of this study showed that the commercial product BOTRY-Zen, at 6 g/L, could be a useful tool to control fruit rots of strawberry and grape in biological fruit production systems.

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Section: Resultsmentioning

confidence: 99%

Biological control of fruit rots on strawberry and grape by BOTRY-Zen

Thomidis

Pantazis

Navrozidis

et al. 2014

New Zealand Journal of Crop and Horticultural Science

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“…Recently, biologically active natural products have started to become an effective alternative to synthetic fungicides in maintaining fruit quality during storage (Tripathi and Dubey 2004). Chitosan coating has been reported to enhance disease resistance against many fungal diseases, when applied as either a preharvest or postharvest treatment (Reglinski et al . 2005).…”

Section: Introductionmentioning

confidence: 99%

Effect of Postharvest Putrescine Application and Chitosan Coating on Maintaining Quality of Table Grape Cv. “Shahroudi” During Long-Term Storage

Shiri

Ghasemnezhad

Bakhshi

et al. 2012

Journal of Food Processing and Preservation

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The role of postharvest application of putrescine (PUT) alone or in combination with chitosan (CH) on maintaining quality of fresh table grapes (Vitis vinifera) cultivar “Shahroudi” was investigated. The clusters were dipped in an aqueous solution containing different concentrations of PUT (0, 1 and 2 mM). Following PUT treatments, some fruits were coated with 1% w/v CH. After treatment, fruits were stored at 0 ± 1C and 90 ± 5% relative humidity for 60 days and 5 additional days in evaluation room. The general appearance of rachis and berries and some physiological characters were estimated. The combination of 1 mM PUT and 1% CH reduced the weight loss, decay incidence, browning, and berry shattering and cracking. Postharvest PUT‐treated berries (1 and 2 mM) exhibited higher total phenolic content, catechin, total quercetin and antioxidant activity and the lower quercetin 3‐galactoside as compared with other treatments. PRACTICAL APPLICATIONS Table grape is a nonclimacteric fruit with a low physiological activity, but is subject to serious physiological disorders, water loss and fungal deterioration during postharvest handling. Stem browning and gray mold infection caused by the fungus Botrytis cinerea are the two main factors which reduce table grape postharvest quality. Recently, biologically active natural products have started to become an effective alternative to synthetic fungicides in maintaining fruit quality during storage. Chitosan coating has been reported to enhance disease resistance against many fungal diseases, when applied as either a preharvest or postharvest treatment. Polyamines (PAs) are also biological compounds with low molecular weight that are ubiquitous in living organisms. PAs have been reported as anti‐senescence agents, the main effects in fruits being retarded color changes, increased fruit firmness, delayed ethylene and respiration rate emissions, induced mechanical resistance.

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“…The host tissue for this bioassay was sterile (gamma‐irradiated), dry necrotic leaf discs (22 mm diameter), prepared from unsprayed, healthy, mature kiwifruit leaves (Reglinski et al. ). The dry leaf discs were fully rehydrated by soaking overnight (5°C) in bottles of SDW, and then transferred to Petri dishes containing two moist (1 ml SDW) sterile filter papers (Whatman No.…”

Section: Methodsmentioning

confidence: 99%

Inhibition of Botrytis cinerea by Epirodin: A Secondary Metabolite from New Zealand Isolates of Epicoccum nigrum

Alcock

Elmer

Marsden

et al. 2015

Journal of Phytopathology

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Many isolates of the saprophytic fungus Epicoccum nigrum produce yellow compounds that diffuse readily into culture media. Historically, two such compounds have been identified; flavipin and epirodin both reported to have antimicrobial properties. Preliminary studies on 280 New Zealand isolates of E. nigrum confirmed that all but two produced a yellow, intensely pigmented substance in sufficient amounts to inhibit the germination of Botrytis cinerea conidia. The compound produced by the inhibitory isolates is epirodin, a polyene antibiotic. Five representative E. nigrum isolates were selected for further investigation. Two of these produced relatively large amounts of epirodin and, in a diffusible metabolite assay, reduced germination of B. cinerea conidia by up to 94%. Another isolate produced a trace amount of epirodin and had no effect on the germination of B. cinerea conidia or on germ tube morphology. The two remaining isolates produced intermediate amounts of epirodin and were only moderately inhibitory to the germination of B. cinerea conidia and to germ tube morphology. In slide dual-culture experiments, epirodin appeared to concentrate in conidia and mycelia of B. cinerea. In acid conditions, as on dual-culture slides of E. nigrum and B. cinerea, the yellow-coloured epirodin underwent a hypsochromic shift, changing colour to become red. The relationship between epirodin production and the suppression of Botrytis growth and development was further investigated using necrotic kiwifruit leaf discs. The E. nigrum isolate that produced the greatest amount of epirodin almost completely inhibited the growth and development of B. cinerea on the leaf discs. In contrast, the efficacy of E. nigrum isolates which produced less epirodin ranged from 78% to just 23%. This is the first report of epirodin production by New Zealand isolates of E. nigrum, and we conclude that isolates that produce high concentrations of epirodin may have potential for plant disease control.

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Suppression of Botrytis bunch rot in Chardonnay grapevines by induction of host resistance and fungal antagonism

Cited by 33 publications

References 25 publications

Biological control of fruit rots on strawberry and grape by BOTRY-Zen

Biological control of fruit rots on strawberry and grape by BOTRY-Zen

Effect of Postharvest Putrescine Application and Chitosan Coating on Maintaining Quality of Table Grape Cv. “Shahroudi” During Long-Term Storage

Inhibition of Botrytis cinerea by Epirodin: A Secondary Metabolite from New Zealand Isolates of Epicoccum nigrum

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