Hidrotermia e radiação UV-C no controle de patógenos de manga e melão

Nascimento, Fernanda Varela; Santos, Murilo César dos; Valdebenito‐Sanhueza, Rosa Maria; Bartnicki, Vinícius Adão

doi:10.1590/0100-5405/2024

Cited by 7 publications

(4 citation statements)

References 11 publications

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“…Consequently, there is a search for alternative technologies to control post-harvest diseases. In this context, one of the growing technologies to control post-harvest disease without chemical residuals is the use of physical treatments (Spadoni et al, 2015), such as pulsed light (Nascimento et al, 2014; Olaimat and Holley, 2012). This light, emitted in the range of 200 to 280 ηm, falls within the ultraviolet (UV-C) region and has germicidal effects (FDA, 2000; Bintsis et al, 2000) on a wide range of microorganisms (Rowan et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Uncovering the transcriptional molecular dynamics of shelf life extension and system acquired resistance induction toFusarium pallidoroseumin melon fruits by the use of pulsed-light

Arge,

Morais,

Carvalho

et al. 2024

Preprint

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Melon is a globally commercialized fruit, and Fusarium rot disease poses a significant threat to post-harvest losses. The conventional use of fungicides raises concerns about chemical residues, prompting exploration into alternative technologies such as Pulsed Light (PL). While PL has been effective in controlling infections in various fruits and vegetables, the precise physiological responses and molecular mechanisms in melon fruits remain incompletely understood. In this study, melon fruits infected with the Fusarium pallidoroseum were treated with different doses of PL (0, 6, 9, and 12 J cm-2), and the impact on both fungal control and fruit shelf life extension was investigated. The 9 J cm-2 dose emerged as the most effective in controlling fungal growth without causing damage, inducing beneficial responses. This optimal PL dose upregulated genes in the lignan biosynthesis pathway and the infection upregulated genes involved with systemic acquired resistance, triggered by the pipecolic acid. In this way, the PL treatment and the infection trigger a double mechanism of resistance in melon fruits. A second and third experiment focused on evaluating the extension of melon fruit shelf life and the safe manipulation window post-PL treatment. The results revealed an average shelf life extension of six days and a safe manipulation period of 24 hours. The extension in shelf life was associated with a deviation in information flux from the ethylene biosynthesis to upregulation of the polyamine biosynthesis pathway, which produces nitric oxide, a product that can inhibit ethylene biosynthesis and its action. Furthermore, the observed 24-hour safety period against fungal infection post-PL treatment was characterized as a memory response resistance caused by the upregulation of lignan biosynthesis, which is a potential and efficient alternative to chemical products like fungicides. Overall, this study provides insights into the transcriptional molecular mechanisms through which PL promotes systemic acquired resistance and extends the shelf life of melon fruits.

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Section: Introductionmentioning

confidence: 99%

Uncovering the transcriptional molecular dynamics of shelf life extension and system acquired resistance induction toFusarium pallidoroseumin melon fruits by the use of pulsed-light

Arge,

Morais,

Carvalho

et al. 2024

Preprint

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“…Técnicas alternativas de controle tais como o uso de extratos de plantas (Borges et al, 2016), óleos essenciais (Abd-AllA e Haggag, 2013; Ramos et al, 2016), hidrotermia (Nascimento et al, 2014;Santos et al, 2011), radiação (Nascimento et al, 2014) e a utilização de revestimentos e embalagens (Borges et al, 2016; Santos et al, 2011) estão sendo aplicadas, uma vez que, não deixam resíduo ou apresentam menor poder residual, não colocam em risco a saúde dos consumidores e evitam a contaminação do meio ambiente. Sendo assim, o objetivo deste trabalho foi avaliar a eficiência de diferentes temperaturas e embalagens para o controle da antracnose (C. gloeosporioides) na cultura da manga.…”

Section: Introductionunclassified

EFEITO DA TEMPERATURA E DE EMBALAGENS SOBRE A ANTRACNOSE EM FRUTOS DE MANGA cv. TOMMY ATKINS

2018

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<p>Este trabalho teve como objetivo avaliar a eficiência de diferentes temperaturas e embalagens para o controle da antracnose (Colletotrichum sp.) na cultura da manga. Os frutos selecionados encontravam-se em estádio de maturação comercial, possuindo uniformidade de cor, tamanho e ausência de injúrias mecânicas e fisiológicas, sendo submetidos à inoculação e em seguida à câmara úmida por 24 horas. Posteriormente, foram aplicados os tratamentos: T1 – 10ºC sem embalagem; T2 – 10ºC com embalagem individual; T3 – 10ºC com embalagem coletiva; T4 – 24ºC sem embalagem; T5 - 24ºC com embalagem individual; T6 – 24ºC com embalagem coletiva; T7 – temperatura ambiente sem embalagem (testemunha); T8 – temperatura ambiente com embalagem individual; T9 – temperatura ambiente com embalagem coletiva. Utilizou-se delineamento inteiramente casualizado com cinco repetições, dispostos num esquema fatorial 3 x 3 (três temperaturas e três embalagens). Foram avaliadas incidência (I) e severidade (S) da doença aos 0, 4, 8 e 12 dias após os tratamentos (DAT). Os dados foram submetidos à análise de variância e as médias comparadas pelo teste de Scott-Knott (P≤ 0,05). Os resultados obtidos demonstraram que todos os frutos analisados foram suscetíveis à antracnose, nos diferentes tratamentos, sendo o armazenamento refrigerado a 10ºC com embalagem individual o que apresentou melhor resultado, podendo ser recomendado como um método alternativo no controle pós-colheita de antracnose em frutos de manga.</p>

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“…The increasing consumers' health-consciousness along with the environmental and social implications of the production of their food, including concerns over the presence of pesticide residues (FAO 2009) has prompted the search for non-chemical control. Several alternative strategies are proposed to delay the ripening and the progress of quiescent infections by phytopathogens, including the use of irradiation and hydrothermal treatments (Nascimento et al 2014;Ruan et al 2015;Terao et al 2015), alternative products from plants (Lins et al 2011;Cruz et al 2010) and biological control through antagonistic microorganisms (Kefialew and Ayalew 2008;Janisiewicz et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Competitive and colony layer formation ability as key mechanisms by yeasts for the control Botryosphaeria dothidea fruit rot of mango

Terao

Nechet

Halfeld-Vieira

2017

Trop. plant pathol.

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Mango is an economically important fruit crop in Brazil and attacked by fungal diseases that require control. Currently, ensuring that fruit are free of pesticide residues before consumption is a key challenge in postharvest pathology. The fungus Botryosphaeria dothidea is the major pathogen and there is currently no efficient method for its control. This work aimed to evaluate the efficacy of yeast strains and the mechanisms involved in the biocontrol of mango rot caused by B. dothidea. The ability of seven yeast strains to control mango rot was compared to thiabendazole fungicide (485 g ai 100 L −1). The modes of action involved in biocontrol were investigated by electron microscopy observations, as well bioassays for the production of inhibitory volatile compounds, chitinases, killer toxins and competition for nutrients and yeast colony layer interference. Strains of Candida membranifaciens and Meyerozyma guilliermondii reduced the severity of mango rot during 11-day storage period. Among them, C. membranifaciens (CMAA 1108) showed highest efficacy when compared to fungicide-treated fruit. No strains produced inhibitory substances against B. dothidea. Electron microscopy revealed an effective colonization by yeasts in the wounds. It is suggested that competition, as well as the establishment of a yeast colony layer after colonization, plays an important role in the reduction of mango fruit rot severity.

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Hidrotermia e radiação UV-C no controle de patógenos de manga e melão

Cited by 7 publications

References 11 publications

Uncovering the transcriptional molecular dynamics of shelf life extension and system acquired resistance induction toFusarium pallidoroseumin melon fruits by the use of pulsed-light

Uncovering the transcriptional molecular dynamics of shelf life extension and system acquired resistance induction toFusarium pallidoroseumin melon fruits by the use of pulsed-light

EFEITO DA TEMPERATURA E DE EMBALAGENS SOBRE A ANTRACNOSE EM FRUTOS DE MANGA cv. TOMMY ATKINS

Competitive and colony layer formation ability as key mechanisms by yeasts for the control Botryosphaeria dothidea fruit rot of mango

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