Influence of temperature and humidity on the survival of <scp><i>Monilinia fructicola</i></scp> conidia on stone fruits and inert surfaces

Bernat, Maria; Segarra, J.; Navas‐Cortés, Juan A; Casals, C.; Torres, Rosário; Teixidó, Neus; Usall, J.

doi:10.1111/aab.12434

Cited by 10 publications

(5 citation statements)

References 30 publications

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“…We do not have a clear reason why conidia decrease drastically on untreated surfaces from 2 to 24 hours, but we attributed this effect to plastic and wood surfaces not provided a suitable place to adhered, germinate and infect conidia. Our results agree with Bernat et al (2018) who showed that M. fructicola conidia viability decrease drastically after some hours at 20 and 30 ºC and 60% HR on inert surfaces.…”

Section: Discussionsupporting

confidence: 93%

Efficacy of environmental friendly disinfectants against the major postharvest pathogens of stone fruits on plastic and wood surfaces

Bernat

Casals

Teixidó

et al. 2018

Food sci. technol. int.

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Surface facilities disinfection during postharvest handling operation is an important practice to avoid secondary fruit infections at stone fruits packinghouses. The aim of this work was evaluates the effect of six disinfectants environmentally friendly against to Monilinia fructicola, Penicillium expansum, Rhizopus spp. and Alternaria spp. on plastic and wood surfaces. Hydrogen peroxide, peracetic acid, sodium hypochlorite, Mico-E-pro ® , Proallium FRD-N ® and DMC Clean-CNS ® were used as disinfectants. Untreated and treated surfaces with water were used as controls. Plastic and wood surfaces were sampled with Rodac plates at 2 and 24 hours after treatments and the number of colonies were counted. In general, all disinfectants reduce the number of viable conidia from all studied surfaces. Hydrogen peroxide used in a concentration of 150 mg L-1 was less effective disinfectant in all studied pathogens. The commercial product Mico-E-pro ® composed by oregano, onion and orange extract at dose of 10 mg L-1 was the most effective disinfectant. Rhizopus spp. was the pathogen more resistant to disinfectant followed by P. expansum. M. fructicola and Alternaria spp. Water decreased the number of conidia adhered to surfaces. In addition, the untreated control showed substantial conidia reduction after 24 h of artificially inoculation.

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Section: Discussionsupporting

confidence: 93%

Efficacy of environmental friendly disinfectants against the major postharvest pathogens of stone fruits on plastic and wood surfaces

Bernat

Casals

Teixidó

et al. 2018

Food sci. technol. int.

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“…Monilinia laxa is an airborne plant pathogen subjected to different abiotic environmental factors, such as temperature, humidity, wind, and sunlight, that influence brown rot development. Multiple studies have described the importance of temperature and humidity factors for the successful infection in the field [ 4 , 37 ], its influence on the presence of latent infections [ 2 ], or even in postharvest fruit management [ 38 , 39 ]. However, few have taken into account the influence of light cycles, quantity, or quality of light in Monilinia spp.…”

Section: Discussionmentioning

confidence: 99%

Light-Photoreceptors and Proteins Related to Monilinia laxa Photoresponses

Rodríguez-Pires

Espeso

Rasiukevičiūtė

et al. 2021

JoF

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Light represents a ubiquitous source of information for organisms to evaluate their environment. The influence of light on colony growth and conidiation was determined for three Monilinia laxa isolates. The highest mycelial growth rate was observed under red light for the three M. laxa isolates, followed by green light, daylight or darkness. However, reduced sporulation levels were observed in darkness and red light, but conidiation enhancement was found under daylight, black and green light with more hours of exposure to light. Putative photoreceptors for blue (white-collar and cryptochromes), green (opsins), and red light (phytochromes) were identified, and the photoresponse-related regulatory family of velvet proteins. A unique ortholog for each photoreceptor was found, and their respective domain architecture was highly conserved. Transcriptional analyses of uncovered sets of genes were performed under daylight or specific color light, and both in time course illumination, finding light-dependent triggered gene expression of MlVEL2, MlPHY2, MlOPS2, and MlCRY2, and color light as a positive inductor of MlVEL3, MlVEL4, MlPHY1, and MlCRY1 expression. M. laxa has a highly conserved set of photoreceptors with other light-responsive fungi. Our phenotypic analyses and the existence of this light-sensing machinery suggest transcriptional regulatory systems dedicated to modulating the development and dispersion of this pathogen.

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“…Chlorine, sodium hypochlorite, peracetic acid, and hydrogen peroxide are the most common aqueous disinfectants used in packing houses to disinfect fruit when it arrives from the field and also to clean the surfaces of bins or facilities. Sodium hypochlorite has shown great disinfecting power on surfaces infected with M. fructicola [ 50 ]. Chlorine at a concentration of 50 mg L −1 significantly decreased conidial germination of Mucor piriformis and Penicillium expansum after 30 s of treatment, although fruit rotting was not controlled.…”

Section: Discussionmentioning

confidence: 99%

Impact of Postharvest Handling on Preharvest Latent Infections Caused by Monilinia spp. in Nectarines

Garcia-Benitez

Casals

Usall

et al. 2020

JoF

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Latent infections caused by Monilinia spp. in nectarines cause great economic losses since they are not detected and rejected at harvest and can appear at any time post-harvest, even at the consumer’s home. The effect of a pre-cooling chamber, water dump operation, and cold-storage chamber on the activation and/or development of preharvest latent infections caused by Monilinia spp. on nectarines were studied under different postharvest conditions: (a) cold storage for 0, 1, or 3 d at 4 °C at either 75% relative humidity (RH) or 100% RH before water dumping, (b) water dumping for 10 minutes at 15 °C, and (c) cold storage for 0, 3, or 10 d at 4 °C at either 75% RH or 100% RH after water dumping. These storage conditions were transformed to fungal physiological time. For visualization of the latent infections caused by Monilinia spp., the nectarines were placed in sterile paper bags and frozen at −20 °C for 48 h in order to damage the epidermis. To compare different handling scenarios, the incidence of latent infection was modelled for physiological time description by a modified Gompertz model. The activation and/or development of preharvest natural latent infections caused by Monilinia spp. at postharvest was mainly related to temperature and incubation time at postharvest. Storing nectarines with any postharvest handling less than 11 days at 4 °C avoids brown rot symptoms and reduced the activation and/or development of pre-harvest latent infections caused by Monilinia spp., while more cold days caused the exponential phase of latent infection activation and/or development. The Gompertz model employed could be used for predicting the activation and/or development of latent infection caused by Monilinia spp. at postharvest conditions and looks at the postharvest life. To our knowledge, this is the first time that the effects of post-harvest handling on latent infections in fruit have been studied.

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Influence of temperature and humidity on the survival of Monilinia fructicola conidia on stone fruits and inert surfaces

Cited by 10 publications

References 30 publications

Efficacy of environmental friendly disinfectants against the major postharvest pathogens of stone fruits on plastic and wood surfaces

Efficacy of environmental friendly disinfectants against the major postharvest pathogens of stone fruits on plastic and wood surfaces

Light-Photoreceptors and Proteins Related to Monilinia laxa Photoresponses

Impact of Postharvest Handling on Preharvest Latent Infections Caused by Monilinia spp. in Nectarines

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