Biological Control of Pythium Damping –off in Seedlings with Streptomyces Sp.

,; Kanimozhi R*, Beena; Raj R.S, David Paul; ,

doi:10.35940/ijrte.d4531.118419

Cited by 2 publications

(3 citation statements)

References 11 publications

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“…Similarly, Streptomyces spp. isolate KUBPMB1.1 was efficient to control the P. aphanidermatum [34]. The main biocontrol mechanisms of Streptomyces species consist of antibiosis by the production of antibiotics [75] and hydrolyzing enzymes.…”

Section: Discussionmentioning

confidence: 99%

“…This is the first report of biocontrol of damping-off in tomato plants caused by P. aphanidermatum managed by applying Streptomyces in Iran and the second report of employment of Streptomyces spp. for biological control of damping-off in tomato caused by P. aphanidermatum [34].…”

Section: Discussionmentioning

confidence: 99%

“…[20,30], Aspergillus terreus [31], Klebsiella oxytoca, Exiguobacterium indicum and Bacillus cereus [32], Talaromyces variabilis [33], and Streptomyces spp. isolate KUMB1.1 [34]. Some of these microorganisms also act as plant growth-promoting fungi (PGPF) or plant growth-promoting rhizobacteria (PGPR).…”

Section: Introductionmentioning

confidence: 99%

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Biological Control of Pythium aphanidermatum, the Causal Agent of Tomato Root Rot by Two Streptomyces Root Symbionts

et al. 2021

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Damping-off caused by Pythium aphanidermatum, as one of the most infamous plant diseases, is considered as a significant disease that causes severe damages in greenhouse and field crops in a vast range of hosts especially vegetables. The application of chemical fungicides as a common method to control this disease poses negative side effects on humans and the environmental components. Actinobacteria, especially members of the genus Streptomyces, are fascinating biocontrol agents and plant growth-promoting rhizobacteria, which exhibit safer alternative managements to control this disease. The present study aims to explore for bioactives soil Streptomyces isolates that are able to control P. aphanidermatum, which is the causal agent of damping-off in tomato. Out of a total of 116 actinobacteria isolates collected from the soil, 53 have showed an antagonistic activity against P. aphanidermatum, as deduced through in vitro dual cultures. Based on in vitro Petri plate seedling-bioassays (IPSB), from the 53 tested isolates in dual cultures, two isolates coded as H2 and H3, considered as the most bioactive agents, were selected to assess their biocontrol performances against P. aphanidermatum in the Sandwich bed-mix technique in greenhouse experiments. In vivo greenhouse statistical studies were performed to compare seven treatments using completely randomized design experiments. Metalaxyl fungicide was applied as the chemical-control treatment. To evaluate biocontrol efficiencies of the two Streptomyces symbionts, disease incidence recorded throughout the course of experiment and criteria of number of leaves, length of the plants, plant fresh and dry weights, were measured at the end of experiment and analyzed statistically. The resulted disease incidences for all treatments indicated that the two Streptomyces strains had PGPR activity, and they were effective in decreasing disease incidence and improving plant performances regarding number of leaves, height, and plant fresh and dry weights. Based on the phylogenetic analysis of the partial sequences of the 16S rRNA gene, the strain H2 revealed a close relation to six Streptomyces species, namely S. badius, S. caviscabies, S. globisporus, S. parvus, S. sindenensis, and S. griseoplanus, with 99.9% similarity. The strain H3 also indicated a close relation of the same similarity to two species, namely S. flavogriseus and S. pratensis. In overall, collected data dictated that the two bioactive root symbiont Streptomyces strains effectively controlled the damping-off disease caused by P. aphanidermatum.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Biological Control of Pythium aphanidermatum, the Causal Agent of Tomato Root Rot by Two Streptomyces Root Symbionts

et al. 2021

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Formulation and Evaluation of Herbal Shampoo

Sangale¹,

Dhamne²,

Dalvi³

et al. 2022

IJARSCT

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The study aimed to formulate a pure herbal shampoo and to evaluate and compare its physicochemical properties with the marketed synthetic and herbal shampoos. The herbal shampoo was formulated by adding the extracts of Acacia concinna, Sapindus mukorossi, Phyllanthus emblica, Ziziphus spina-Christi and Citrus aurantifolia in different proportions to a 10% aqueous gelatin solution. Small amount of methyl paraben was added as a preservative and pH was adjusted with citric acid. Several tests such as visual inspection, pH, wetting time, % Of solid contents, foam volume and stability, surface tension, detergency, dirt dispersion etc, were performed to determine the physicochemical properties of both prepared and marketed shampoos. The formulated herbal shampoo was also evaluated for conditioning performance by administering a blind test to 20 student volunteers. The formulated herbal shampoo was clear and appealing.

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Biological Control of Pythium Damping –off in Seedlings with Streptomyces Sp.

Cited by 2 publications

References 11 publications

Biological Control of Pythium aphanidermatum, the Causal Agent of Tomato Root Rot by Two Streptomyces Root Symbionts

Biological Control of Pythium aphanidermatum, the Causal Agent of Tomato Root Rot by Two Streptomyces Root Symbionts

Formulation and Evaluation of Herbal Shampoo

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