Fungicides and alternative products in the mycelial growth and germination control of Alternaria tomatophila

Catão, Hugo César Rodrigues Moreira; Sales, Nilza de Lima Pereira; Azevedo, Daiana Maria Queiroz; Flávio, Nicoletta Stefânia Dias da Silva; Menezes, João Batista de Campos; Barbosa, Letícia Vieira; Martinez, Roberto Antonio Savelli

doi:10.4067/s0718-34292013000300004

Cited by 7 publications

(8 citation statements)

References 14 publications

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“…(Table 1). Phosphites are used as resistance inducers to activate the plant defense mechanisms, and have a varied direct effect on pathogens (depending on the phytopathogen) and phosphite rate and type (Catão et al 2013, Ogoshi et al 2013, Alexandre et al 2014.…”

Section: Resultsmentioning

confidence: 99%

“…Some products based on agents used for biological control, plant essential oils and resistance inductors have been efficient for controlling diseases in various pathosystems, including fruit plants such as papaya. These products have no deleterious effects as chemical pesticides (Combrinck et al 2011, Catão et al 2013, Hamini-Kadar et al 2014, Lubaina & Murugan 2015, Valenzuela et al 2015.…”

Section: Controle Alternativo De Doenças Pós-colheita Em Mamão Tainungmentioning

confidence: 99%

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Alternative control of post-harvest diseases in Tainung 1 papaya

Dantas

Nascimento

Cruz

et al. 2018

Pesqui. Agropecu. Trop.

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Controlling post-harvest papaya diseases without using agrochemicals is a challenge for producers. This study aimed at evaluating the effect of clove essential oil, biological fungicide (Trichodermil®), resistance inducer (Cob Sistem®) and chemical fungicide (Imazacure®) on the in vitro control of phytopathogenic fungi isolates from papaya as well as on the post-harvest quality of Tainung 1 papaya. The in vitro experiment was conducted in a complete randomized design, with five fungal species x five treatments and five replications. The in vivo experiment was conducted in a complete randomized design, with five treatments x five storage times, five replications and three fruits per replication. The fruits were stored under refrigeration at 10 ± 2 ºC and 90 ± 5 % of relative humidity and evaluated at 0, 7, 14, 21 and 28 days of storage, plus two shelf life days at 25 ± 2 ºC, to simulate marketing conditions. The inhibition of mycelial growth was evaluated in the in vitro experiment, while the diseases occurrence and post-harvest quality of the fruits were evaluated in the in vivo experiment. The clove essential oil and Trichodermil® were as efficient as Imazacure® in inhibiting the mycelial growth of Alternaria sp., Colletotrichum gloeosporioides and Rhizopus sp. The treatments with clove essential oil, Trichodermil® and Imazacure® were similar in controlling the pathogens up to 21 days of storage. The treatments had no effect on the fruits soluble solid contents.

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Section: Resultsmentioning

confidence: 99%

Section: Controle Alternativo De Doenças Pós-colheita Em Mamão Tainungmentioning

confidence: 99%

Alternative control of post-harvest diseases in Tainung 1 papaya

Dantas

Nascimento

Cruz

et al. 2018

Pesqui. Agropecu. Trop.

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“…For each treatment, one hundred conidia were examined, and the extent of spore germination was assessed by looking for germ tube emergence. The percentage of inhibition of conidial germination (PIG) was then calculated, where PIG = (n o control conidia-n o treatment conidia/n o control conidia) × 100, wherein n°control conidia = number of conidia of control treatment and n°control treatment = number of conidia of treatment (Catão et al 2013).…”

Section: Antifungal Activity Of Be On Conidial Germinationmentioning

confidence: 99%

Biocontrol potential of Streptomyces sp. CACIS-1.5CA against phytopathogenic fungi causing postharvest fruit diseases

Evangelista-Martínez

Contreras-Leal

Corona-Pedraza

et al. 2020

Egypt J Biol Pest Control

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Background Fungi are one of the microorganisms that cause most damage to fruits worldwide, affecting their quality and consumption. Chemical controls with pesticides are used to diminish postharvest losses of fruits. However, biological control with microorganisms or natural compounds is an increasing alternative to protect fruits and vegetables. In this study, the antifungal effect of Streptomyces sp. CACIS-1.5CA on phytopathogenic fungi that cause postharvest tropical fruit rot was investigated. Main body Antagonistic activity was evaluated in vitro by the dual confrontation over fungal isolates obtained from grape, mango, tomato, habanero pepper, papaya, sweet orange, and banana. The results showed that antagonistic activity of the isolate CACIS-1.5CA was similar to the commercial strain Streptomyces lydicus WYEC 108 against the pathogenic fungi Colletotrichum sp., Alternaria sp., Aspergillus sp., Botrytis sp., Rhizoctonia sp., and Rhizopus sp. with percentages ranging from 30 to 63%. The bioactive extract obtained from CACIS-1.5 showed a strong inhibition of fungal spore germination, with percentages ranging from 92 to 100%. Morphological effects as irregular membrane border, deformation, shrinkage, and collapsed conidia were observed on the conidia. Molecularly, the biosynthetic clusters of genes for the polyketide synthase (PKS) type I, PKS type II, and NRPS were detected in the genome of Streptomyces sp. CACIS-1.5CA. Conclusions This study presented a novel Streptomyces strain as a natural alternative to the use of synthetic fungicides or other commercial products having antagonistic microorganisms that were used in the postharvest control of phytopathogenic fungi affecting fruits.

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“…The effect of phosphite application on the management of plant diseases may vary according to the type of phosphite, dose applied and target pathogen. There are reports of partial and / or total inhibition of mycelial growth, conidial production / germination, and appressorium formation of different fungi [19,11,20,17,10,21]. In this sense, the aim of this study was to evaluate the in vitro effect of different phosphite formulations and concentrations on C. musae development.…”

Section: Introductionmentioning

confidence: 99%

Phosphite-based Products in the In vitro Colletotrichum musae Control

Rodrigues

Mizobutsi

Prates

et al. 2019

JEAI

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Aims: The aim of this study was to evaluate the in vitro effect of different phosphite formulations and concentrations on the development of Colletotrichum musae. Sample: to evaluate the inhibition of germination, mycelial growth and sporulation of Colletotrichum musae. Study Design: Treatments were conducted in a completely randomized design, with 4 replicates, each replicate consisting of 1 Petri dish. Place and Duration of Study: Laboratory of Post-Harvest Pathology, State University of Montes Claros, between March and October 2017. Methodology: Three different phosphite formulations were used: FCu1 (4% Cu + 20% P2O5), FCu2 (4% Cu + 22% P2O5) at concentrations of 0.5;1.0; 1.5 and 2.0 mL L-1 and FK (42% P2O5 + 27.7% K2O) at concentrations of 0.5; 1.0; 1.5 and 2.0 mg.L-1. Products were incorporated into the respective culture media. Culture medium alone and culture medium + imazalil were used as controls. Petri dishes were housed in BOD chamber at 25°C under a 12 hours photoperiod. Results: Results were submitted to analysis of variance and regression, and means were compared by the Tukey test (P <0.05). Control was compared to the other treatments by the Dunnet's test (P <0.05). Among the tested phosphite formulations, copper and potassium phosphites were found to reduce the mycelial growth of Colletotrichum musae. FCu2 presents a fungicide-like effect from the concentration of 0.5 m.L-1 in the control of conidia production. As for the FCu1, a fungicide-like effect was observed in the control of germination from the concentration of 1.5 mL.L-1. Conclusion: A significant fungistatic effect was observed between the concentrations of the products in the mycelial growth, sporulation and germination obtaining control of up to 100% of the development of C. musae. Copper phosphites were as effective as fungicide in inhibiting fungal development.

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Fungicides and alternative products in the mycelial growth and germination control of Alternaria tomatophila

Cited by 7 publications

References 14 publications

Alternative control of post-harvest diseases in Tainung 1 papaya

Alternative control of post-harvest diseases in Tainung 1 papaya

Biocontrol potential of Streptomyces sp. CACIS-1.5CA against phytopathogenic fungi causing postharvest fruit diseases

Phosphite-based Products in the In vitro Colletotrichum musae Control

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