Manejo da podridão de melão pelo controle do amadurecimento através do 1-mcp, sob duas condições de armazenamento

Terao, D.; Oliveira, Sônia Maria Alves de; Viana, F. M. P.; Sá, Cynthia Renata Lima; Moura, Renata Damasceno; Gondim, Darcy M.F.

doi:10.1590/s0100-54052009000200005

Cited by 3 publications

(4 citation statements)

References 13 publications

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“…The fungi Fusarium pallidoroseum, Fusarium solani, and Colletotrichum musae stand out among the phytopathogens of interest in agriculture. The species F. pallidoroseum is a saprophyte, causing plant deterioration, post-harvest root and fruit rot, or leaf deterioration in several plants; moreover, it can make part of a disease complex when present together with other fungi and phytonematodes (TERAO et al, 2009). The fungus F. solani attacks several crops, such as potato, cassava, and yam (tuber rot); pea (stem rot); soybean (sudden death syndrome); and beans (dry root rot) (CRUZ et al, 2015;SAMEZA et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…In addition, they cause the emergence of resistant races. Therefore, the reduction or elimination of agrochemicals in disease control has become an economic imperative and no longer an option (TERAO et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…To maintain crop sustainability and economic viability, strategies of alternative control must be developed by integrating a clean technology that seeks to reduce or even eliminate the risks of chemical contamination. The focus is to guarantee product quality and preserve population's health, consequently ensuring the competitiveness of the agricultural product (TERAO et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Essential oils of Myrcia lundiana Kiaersk and their major compounds show differentiated activities against three phytopathogenic fungi

Alves¹,

Blank²,

Gagliardi³

et al. 2018

Biosci. J.

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The present study evaluated the antifungal activity of the essential oils of chemotypes of Myrcia lundiana and their major compounds on the fungi Fusarium pallidoroseum, Fusarium solani, and Colletotrichum musae. The essential oils were obtained by hydrodistillation and analyzed by GCMS/FID. For the evaluation of the antifungal activity, the essential oils and the major compounds were tested at the concentration of 0.1 mL/L until the fungicidal effect was detected. The major compounds detected in the essential oil were 1,8-cineole, isopulegol, and citral. The chemotypes (MLU-005 and MLU-019) provided 100% mycelial growth inhibition for the fungus F. pallidoroseum from the concentration of 1.1 mL/L (minimum inhibition concentration-MIC). For chemotype (MLU-022), the minimum fungicidal concentration (MFC) was 0.3 mL/L. For F. solani, the essential oils of the chemotypes (MLU-005 and MLU-019) presented MIC at concentrations of 7.0 and 5.0 mL/L, respectively. The essential oil of the chemotype (MLU-022) presented MFC of 0.6 mL/L. Different MIC was observed for the three studied chemotypes for the fungus C. musae, ranging between 0.4 mL/L, for the chemotype (MLU-005); 0.5 mL/L, for the chemotype (MLU-022); and 0.7 mL/L, for the chemotype (MLU-019). The best MFC was observed for the chemotype (MLU-005) (0.5 mL/L). The major compounds tested separately presented better MIC values when compared with their chemotypes, except for the compound 1,8-cineole, which presented lower mycelial growth inhibition for the three fungi tested, suggesting that the chemical profile or the presence of some other compound of the essential oil may inhibit the growth of the three fungi studied. The compound isopulegol provided lower MFC for the fungus C. musae (0.4517 mL/L) when compared with the fungi F. pallidoroseum and F. solani, (MFC of 0.4927 mL/L). The compound citral provided a lower MFC on the fungus C. musae (0.1668 mL/L) in relation to the other fungi tested. The essential oils of the chemotypes of M. lundiana and their major compounds showed potential to control the studied phytopathogens and can be an alternative for agriculture for presenting an inhibitory and fungicidal effect against these organisms at lower concentrations.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Essential oils of Myrcia lundiana Kiaersk and their major compounds show differentiated activities against three phytopathogenic fungi

Alves¹,

Blank²,

Gagliardi³

et al. 2018

Biosci. J.

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“…Wounding avoidance during harvest and packing, proper storage and transit temperatures, and prompt handling of melons upon arrival at the market can provide some protection against postharvest decay (BRUTON, 1995;BRUTON;DUTHIE, 1996). More recently, the control of corky dry rot through the activation of systemic resistance GE et al, 2008;GONDIM et al, 2008) and the use of ethylene inhibitors (ALVES et al, 2005;TERAO et al, 2009) have been investigated, but with highly variable results.…”

Section: Introductionmentioning

confidence: 99%

<b>Effects of wounding, humidity, temperature, and inoculum concentrations on the severity of corky dry rot caused by <i>Fusarium semitectum</i> in melon fruits

et al. 2014

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Corky dry rot, caused by Fusarium semitectum, is the main postharvest disease of melons in Brazil. This study investigated the effects of wounding, humidity, temperature, and inoculum concentration on the severity of corky dry rot under controlled conditions. Cantaloupe and honeydew melon types were inoculated by spraying conidial suspensions of three F. semitectum isolates. In all experiments, the tested F. semitectum isolates did not differ in relation to disease severity, but, the cantaloupe melon showed higher levels of severity. No lesions appeared on fruits that lacked wounds, and increasing wound age reduced lesion severity. Melons that were inoculated with F. semitectum developed symptoms regardless of the presence or absence of a moist chamber at the post-inoculation stage, but the lesions were larger under moist chamber conditions. There were no symptoms at 10°C, but a temperature increase from 15 to 25°C resulted in a disease severity increase. The largest lesions were observed when both melon types were inoculated with a concentration of 10 6 conidia mL -1 , but even the lowest concentration (10 1 conidia mL -1 ) was sufficient for causing lesions. Injury reduction and/or the acceleration of melon healing, as well as environmental variable control and a reduction of inoculum sources, are essential to reducing corky dry rot severity.Efeito de ferimento, umidade, temperatura e concentração de inóculo na severidade da podridão seca causada por Fusarium semitectum em frutos de melão RESUMO. A podridão seca causada por Fusarium semitectum é a principal doença pós-colheita do melão no Brasil. Este estudo investigou o efeito de ferimento, umidade, temperatura e concentração de inóculo na severidade da podridão seca em condições controladas. Frutos de melão dos tipos cantaloupe e honeydew foram inoculados por meio da pulverização de suspensão de conídios de três isolados de F. semitectum, inoculados separadamente. Em todos os experimentos os isolados de F. semitectum testados não diferiram em relação à severidade da doença, porém, a variedade cantaloupe apresentou maiores níveis de severidade da doença. Não houve lesões em frutos sem ferimento e o incremento na idade do ferimento reduziu a severidade. Melões inoculados com F. semitectum desenvolveram sintomas independentemente de câmara úmida pós-inoculação, mas as lesões foram maiores em condições de câmara úmida. Não houve sintomas a 10°C, mas o aumento da temperatura de 15 para 25°C resultou num incremento da severidade da doença. As maiores lesões foram observadas na concentração de inóculo de 10 6 conídios mL -1 nos dois tipos de melão, mas a menor concentração (10 1 conídios mL -1 ) foi suficiente para causar leões. A diminuição de injúrias nos frutos de melão e/ou a aceleração da cicatrização, bem como o controle das variáveis ambientais e a redução das fontes de inóculo são essenciais para redução da severidade da podridão seca.Palavras-chave: Cucumis melo, podridão do fruto, patologia pós-colheita, epidemiologia. 282Oliveira et al.

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Antifungal action of essential oils against Fusarium rot in melon

Sousa,

Melo,

Gagliardi

et al. 2023

Rev. Caatinga

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The objective of this work was to determine the composition and evaluate in vitro and in vivo effects of essential oils (Lippia sidoides Cham., Ocimum gratissimum L., Cymbopogon citratus Stapf., Ocimum selloi Benth., Citrus sinensis L., Ocimum micranthum Willd., Ocimum sp., and Piper aduncum L.) on the control of Fusarium rot in melon fruits, caused by the fungus Fusarium pallidoroseum. The essential oils were obtained by hydrodistillation and their chemical composition was determined by GCMS and GC-FID. The effect of each essential oil (concentrations of 0, 500, 1500, and 3000µL L-1) on the fungal mycelial growth was evaluated in in vitro experiment. The effective concentration that inhibited 50% of mycelial growth (EC50) was determined through the probit method; mycelial growth index (MGI) was also calculated. The essential oils with higher potential for inhibiting mycelial growth of F. pallidoroseum were evaluated for their inhibitory effect on the fungus spore germination in in vitro and in vivo experiments using melon fruits (variety Galia). Chemical composition analysis of essential oils enabled the identification of varying amounts of chemical compounds, with predominance of monoterpenes. The essential oils of L. sidoides, O. gratissimum, C. citratus, and O. micranthum presented higher inhibiting effects on F. pallidoroseum mycelial growth and spore germination, therefore, they are promising raw materials for the development of commercial fungicides, mainly for controlling postharvest rot caused by F. pallidoroseum.

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Manejo da podridão de melão pelo controle do amadurecimento através do 1-mcp, sob duas condições de armazenamento

Cited by 3 publications

References 13 publications

Essential oils of Myrcia lundiana Kiaersk and their major compounds show differentiated activities against three phytopathogenic fungi

Essential oils of Myrcia lundiana Kiaersk and their major compounds show differentiated activities against three phytopathogenic fungi

<b>Effects of wounding, humidity, temperature, and inoculum concentrations on the severity of corky dry rot caused by <i>Fusarium semitectum</i> in melon fruits

Antifungal action of essential oils against Fusarium rot in melon

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