Identification and morphological characterization of marine actinomycetes as biocontrol
agents of Fusarium solani in tomato

Torres-Rodríguez, Juan Antonio; Pérez, Juan José Reyes; Castellanos, Thelma; Angulo, Carlos; Hernández-Montiel, Luis Guillermo

doi:10.47280/revfacagron(luz).v39.n1.15

Cited by 4 publications

(5 citation statements)

References 39 publications

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“…isolates as well as in colony diameter. Our results mirror the findings reported by Torres-Rodriguez et al (2022a), who found morphological differences in color, diameter, and type of mycelium among F. solani isolates. Diversity was also reflected in reproduction structures, such as macroconidia, microconidia, and chlamydospores, with differences among the obtained isolates, indicating the possible existence of different species within the Fusarium genus.…”

Section: Discussionsupporting

confidence: 92%

Chitosan: Biocontrol agent of Fusarium oxysporum in tomato fruit (Solanum lycopersicum L.)

Torres-Rodriguez,

Reyes-Pérez,

Carranza-Patino

et al. 2024

EJFA

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Synthetic fungicides have experienced a significant increase in recent years, necessitating the search for more sustainable and environmentally friendly alternatives. In this regard, chitosan has emerged as an option to reduce reliance on these products. This study evaluated the effect of chitosan as a biocontrol agent against Fusarium oxysporum in tomato fruits. A fully randomized experimental design incorporating 6 treatments was employed, consisting of four chitosan treatments (0.5, 1, 2, and 3 g L-1), a negative control involving the application of a synthetic fungicide, and a positive control inoculated with F. oxysporum. Samples were taken from infected tomato fruits. The F4 isolate of Fusarium sp. was identified as F. oxysporum, and demonstrated the highest level of virulence. Among the four chitosan treatments, the 3 g L-1 treatment showed the highest a percentage of mycelial growth inhibition (PMGI) at 79.92% and the greatest reduction in biomass at 0.65 g, which did not differ significantly from the synthetic fungicide. Regarding disease severity and incidence, there were significant variations among each of the chitosan treatments, with the highest results obtained with the 2 and 3 g L-1 treatments. All chitosan treatments reduced disease severity in tomato fruits. Applying chitosan on fruits of the tomato plant presents an alternative for diminishing reliance on synthetic fungicides.

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Section: Discussionsupporting

confidence: 92%

Chitosan: Biocontrol agent of Fusarium oxysporum in tomato fruit (Solanum lycopersicum L.)

Torres-Rodriguez,

Reyes-Pérez,

Carranza-Patino

et al. 2024

EJFA

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“…And N. lucentensis , inhibited the mycelial growth of F. solani by 72 and 68%, respectively, and Streptomyces sp. showed no significant differences with the synthetic fungicide [ 67 ].…”

Section: Antifungal In Vitro Activity Of Actinomycetes Isolated In Di...mentioning

confidence: 99%

“… Antifungal activity (% growth inhibition * ) in vitro of actinomycetes isolated from different environments [ 1 , 3 , 4 , 6 , 10 , 19 , 20 , 21 , 53 , 59 , 60 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 ]. …”

Section: Figurementioning

confidence: 99%

Actinomycete Potential as Biocontrol Agent of Phytopathogenic Fungi: Mechanisms, Source, and Applications

Torres-Rodríguez¹,

Pérez

Quiñones-Aguilar³

et al. 2022

Plants

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Synthetic fungicides have been the main control of phytopathogenic fungi. However, they cause harm to humans, animals, and the environment, as well as generating resistance in phytopathogenic fungi. In the last few decades, the use of microorganisms as biocontrol agents of phytopathogenic fungi has been an alternative to synthetic fungicide application. Actinomycetes isolated from terrestrial, marine, wetland, saline, and endophyte environments have been used for phytopathogenic fungus biocontrol. At present, there is a need for searching new secondary compounds and metabolites of different isolation sources of actinomycetes; however, little information is available on those isolated from other environments as biocontrol agents in agriculture. Therefore, the objective of this review is to compare the antifungal activity and the main mechanisms of action in actinomycetes isolated from different environments and to describe recent achievements of their application in agriculture. Although actinomycetes have potential as biocontrol agents of phytopathogenic fungi, few studies of actinomycetes are available of those from marine, saline, and wetland environments, which have equal or greater potential as biocontrol agents than isolates of actinomycetes from terrestrial environments.

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“…Actinomycetes could be utilized as a biological control agent against plant pathogens. Actinomycetes are known to be capable of reducing pathogen activities, such as inhibitory activity of mycelial growth of B. cinerea on tomatoes by 52.38% to 96.19% (Lahmyed et al, 2021); in vitro inhibition up to 85% hyphal desegregation, and antibacterial activity against soilborne-pathogens on Solanum lycopersicum and Daucus carota (Djebaili et al, 2021); development suppression of Alternaria brassicicola on cabbage with increases of ≥80% protection level compared to control (Hassan et al, 2017); reduce damping-off incidence of Pythium aphanidermatum in cucumber by up to 71% (Costa et al, 2013); and inhibit mycelial growth of Fusarium solani by up to 70% (Torres-Rodriguez et al, 2022). These pathogen suppressing activities are caused by their ability to produce several enzymes, i.e., amylase, protease, cellulase, chitinase, esterases, and lecithinase (Loliama et al, 2013;Lahmyed et al, 2021;Zulfa et al, 2021;Díaz-Díaz et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

“…Several studies related to the use of Streptomyces as a biocontrol agent include: the use of Streptomyces to inhibit Ganoderma sp. (Zulfa et al, 2021), Alternaria brassicicola on cabbage seedlings (Hassan et al, 2017), charcoal rot disease on cowpea and mungbean (Jaber & Fayyadh, 2019), damping-off disease in cucumber (Costa et al, 2013), Macrophomina phaseolina and Rhizoctonia solani on Phaseolus vulgaris (Díaz-Díaz et al, 2022), Fusarium solani from tomato (Torres-Rodriguez et al, 2022), etc. In contrast, there is currently relatively little research on actinomycetes from Indonesia.…”

Section: Introductionmentioning

confidence: 99%

A Scientometric and Bibliometric Analysis for Actinomycetes Research - Current Status and Future Trends

Syahri¹,

Somantri²

2022

JPTI

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Actinomycetes are Gram-positive filamentous bacteria used as biocontrol agents against pathogens. Currently, little research on actinomycetes has been published in Indonesia. The study provides issues related to the most relevant keywords in actinomycetes, the most productive authors and countries on actinomycetes research, current research on actinomycetes, and future topics in actinomycetes research. This paper aims to understand the current status and trend of research on actinomycetes in biological control, especially their acts as biocontrol agents. We used VOSviewer and CiteSpace software to perform a scientometric and bibliometric analysis. Out of 452 Scopus publications published between 1971 and 2022. Research on actinomycetes has increased rapidly since 2000, leading to an exponential trend. The result shows that >50% of papers focus on Agricultural and Biological Sciences and indicate that actinomycetes are mainly applied as biocontrol agents. China is the most documented and powerful country, followed by the United States and Iran. In contrast, Indonesia ranks 19th in the world with nine published papers. Scientometric analysis shows Shahidi Bonjar nominated as the strongest citation burst author (4.01). Their topic is mainly on the biological control of pathogens by Actinomycetes, especially Streptomyces sp., while fungi are a dominant pathogen. These findings are related to bibliometric analysis, showing Streptomyces spp. and fungi are two primary keywords in the Scopus database, found on 183 and 139 documents. We found actinomycete research focuses on their ability to manage plant diseases naturally. In the future, we predict actinobacterial research is still essential to biological control, particularly those involving Streptomyces species. Also, several important topics are associated with their activities in controlling pests (nematode), postharvest disease, and growth promoter ability.

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Identification and morphological characterization of marine actinomycetes as biocontrol agents of Fusarium solani in tomato

Cited by 4 publications

References 39 publications

Chitosan: Biocontrol agent of Fusarium oxysporum in tomato fruit (Solanum lycopersicum L.)

Chitosan: Biocontrol agent of Fusarium oxysporum in tomato fruit (Solanum lycopersicum L.)

Actinomycete Potential as Biocontrol Agent of Phytopathogenic Fungi: Mechanisms, Source, and Applications

A Scientometric and Bibliometric Analysis for Actinomycetes Research - Current Status and Future Trends

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