Production of Antimicrobial Metabolites by Streptomyces lavendulocolor VHB-9 Isolated from Granite Mines

B.S.S.N, Hima Bindu; Vijayalakshmi, M.; Munaganti, Rajesh Kumar; Naragani, Krishna; Konda, Saidulu; Dorigondla, Kumar Reddy

doi:10.1590/1678-4324-2017160385

Cited by 6 publications

(7 citation statements)

References 15 publications

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“…The MIC obtained was 0.19 mg mL -1 , while the MLC was 0.38 mg mL -1 . The MIC obtained in the investigation is similar to that reported for other strains of Streptomyces, considered to have an outstanding microbial effect on different species of bacteria and fungi, including F. oxysporum (Hima-Bindu et al, 2017;Pérez-Rojas et al, 2015).…”

Section: Fully Bilingualsupporting

confidence: 85%

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Biological control of Fusarium oxysporum causal agent of gladiolus corm rot by streptomycetes

Rios-Hernández¹,

Uc-Várguez²,

Evangelista-Martínez³

2021

RMF

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Fusarium oxysporum causa la pudrición del cormo en gladiolo provocando pérdidas de hasta el 100%. Se seleccionaron aislados de Fusarium a partir de cormos infectados, se identificó morfológica y molecularmente y se seleccionó un aislado a partir de prueba de patogenicidad. Se seleccionó entre 22 aislados de estreptomicetos una cepa que presentó una actividad antagonista del 40% contra Fusarium. Se obtuvo el Extracto Bioactivo (EB) mediante Fermentación en Fase Sólida y se determinó la concentración mínima inhibitoria (MIC) y concentración mínima letal (MLC) por el método de microdilución. Se obtuvo una MIC para el EB de 0.19 mg mL-1 y una MLC de 0.38 mg mL-1, que se confirmó con un ensayo de germinación de microconidios a 8 h, mostrando un porcentaje de inhibición del 17 y 98% para ¼ y ½ de la MIC. Se evaluó el efecto del EB a 1 y 2 MIC’s de concentración contra la pudrición en cormos de gladiolo infectados, obteniendo un efecto protector en los cormos al mantener su dureza después de 15 días, en comparación con el fungicida Carbendazim. Los resultados indican a Streptomyces sp., como un potencial agente de control biológico contra F. oxysporum.

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Section: Fully Bilingualsupporting

confidence: 85%

“…Se obtuvo una MIC de 0.19 mg mL -1 , mientras que la MLC fue del 0.38 mg mL -1 . La MIC obtenida en el trabajo es similar a los reportados para otras cepas de Streptomyces, consideradas con efecto antimicrobiano sobresaliente sobre diferentes especies de bacterias y hongos, incluyendo F. oxysporum (Hima-Bindu et al, 2017;Pérez-Rojas et al, 2015).…”

Section: Fully Bilingualunclassified

Biological control of Fusarium oxysporum causal agent of gladiolus corm rot by streptomycetes

Rios-Hernández¹,

Uc-Várguez²,

Evangelista-Martínez³

2021

RMF

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“…However, Bssn et al reported that EtOAc extract of Streptomyces lavendulocolor VHB-9 YMD has significant antifungal activity against A. niger , A. flavus , Fusarium solani, P. Citrinum , and C. albicans . The bioactive compounds produced by S. lavendulocolor VHB-9 were Bis (7-methyloctyl) phthalate and (Z)-3-aminoacrylic acid [ 34 ]. Aouiche et al found that Streptomyces spp.…”

Section: Discussionmentioning

confidence: 99%

Optimization of the antifungal metabolite production in Streptomyces libani isolated from northern forests soils in Iran

Azish¹,

Shams-Ghahfarokhi²,

Razzaghi‐Abyaneh³

2021

CMM

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Background and Purpose: Soil bacteria have extreme population diversity among natural sources and are able to produce a wide array of antifungal metabolites. This study aimed to isolate and identify the bioactive metabolite-producing bacteria from forest soils and evaluate their antimicrobial potent against some pathogenic organisms. Materials and Methods: In this study, soil samples were screened for antifungal activity against Aspergillus fumigatus on glucose-yeast extract (GY) agar using a visual agar plate assay method. All growing bacteria were examined for antifungal activity, and antagonistic bacteria were identified based on 16S ribosomal RNA sequence analysis. For optimization of the production of antifungal bioactive metabolites, inhibitory bacteria were cultured on different culture conditions, including media, pH, temperature, and incubation time. Results: In total, 110 bacterial strains were isolated from the forest soils and four species with high antifungal activity were identified as Streptomyces libani, Streptomyces angustmyceticus, Bacillus subtilis, and Sphingopyxis spp. on the basis of 16s ribosomal RNA sequencing. Dichloromethane extract of the starch casein broth culture filtrate of the S. libani (incubated at 30° C for five days) showed strong antifungal activity against A. fumigatus, Aspergillus niger, and Aspergillus flavus. Conclusion: Based on the results, forest soils contain organisms with antifungal activity and could be considered as a good source for novel antifungal metabolites as effective and safe therapeutics.

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“…humidity, temperature, and pH [33]. They can also multiply at low oxygen concentrations in soil, but when the carbon dioxide rate exceeds 10%, the growth of these bacteria is inhibited [34,35].…”

Section: Soilmentioning

confidence: 99%

“…Since Streptomyces spores are resistant to factors such as drought, their number is much higher in soil compared to the vegetative forms of other microorganisms [34,35]…”

Section: Soilmentioning

confidence: 99%

Use of Streptomyces species as a Biological Agent Against Plant Pathogens

Özyılmaz¹,

Akyıl²

2021

jmvi

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Agricultural activities make significant contributions to the national economies around the world. Factors such as rapid population growth and unplanned urbanization cause a decrease in agricultural lands and agricultural crop production over the years with the effect of abiotic and biotic factors. Many studies have been carried out to eliminate factors that reduce crop productivity. Fungal pathogens, one of the leading biotic factors, cause plant diseases and reduce the production efficiency of crops. This study aimed to isolate Streptomyces genus bacteria, which can be used as a biological agent against the wheat pathogen Fusarium culmorum, and to evaluate their antifungal activities. We found that eight of the 25 Streptomyces isolates, which were isolated from soil using the starch-casein agar medium and identified basis on morphological characteristics (colony appearance and microscopic examination results), inhibited the growth of F. culmorum on the Mueller-Hinton agar and that Streptomyces species could be used as a biological agent against this pathogen. We consider that eight Streptomyces isolates having different degrees of antifungal activity is promising for more permanent, economical and efficient solutions against F. culmorum, which is one of the fungi that reduces agricultural economic yield in Turkey. This study can also guide further research that will evaluate the potential use secondary metabolites of Streptomyces bacteria with antifungal properties for biocontrol or promotion of plant growth in different forms of microbial fertilizers.

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Production of Antimicrobial Metabolites by Streptomyces lavendulocolor VHB-9 Isolated from Granite Mines

Cited by 6 publications

References 15 publications

Biological control of Fusarium oxysporum causal agent of gladiolus corm rot by streptomycetes

Biological control of Fusarium oxysporum causal agent of gladiolus corm rot by streptomycetes

Optimization of the antifungal metabolite production in Streptomyces libani isolated from northern forests soils in Iran

Use of Streptomyces species as a Biological Agent Against Plant Pathogens

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