Applications of Actinobacteria in aquaculture: prospects and challenges

James, Greeshma; Geetha, P.; Puthiyedathu, Sajeevan Thavarool; Kumar, V. J. Rejish

doi:10.1007/s13205-023-03465-7

Cited by 12 publications

(4 citation statements)

References 103 publications

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“…After 6 days, overnight cultures of Chromobacterium violaceum MTCC 2656 and Serratia marcescens were spread on the bioassay plates and incubated for 24 h at 30 °C. As strain IM20 suppressed violet pigment production in the subjected strains without affecting bacterial growth, the antiquorum sensing screening activity resulted in the formation of turbid halo pigment-less areas [ 96 , 97 ].…”

Section: Streptomycesmentioning

confidence: 99%

Present Status, Limitations, and Prospects of Using Streptomyces Bacteria as a Potential Probiotic Agent in Aquaculture

Butt

Khan

Liu

et al. 2023

Probiotics & Antimicro. Prot.

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Streptomyces is a Gram-positive bacterium, belonging to the family Streptomycetaceae and order Streptomycetales. Several strains from different species of Streptomyces can be used to promote the health and growth of artificially cultured fish and shellfish by producing secondary metabolites including antibiotics, anticancer agents, antiparasitic agents, antifungal agents, and enzymes (protease and amylase). Some Streptomyces strains also exhibit antagonistic and antimicrobial activity against aquaculture-based pathogens by producing inhibitory compounds such as bacteriocins, siderophores, hydrogen peroxide, and organic acids to compete for nutrients and attachment sites in the host. The administration of Streptomyces in aquaculture could also induce an immune response, disease resistance, quorum sensing/antibiofilm activity, antiviral activity, competitive exclusion, modification in gastrointestinal microflora, growth enhancement, and water quality amelioration via nitrogen fixation and degradation of organic residues from the culture system. This review provides the current status and prospects of Streptomyces as potential probiotics in aquaculture, their selection criteria, administrative methods, and mechanisms of action. The limitations of Streptomyces as probiotics in aquaculture are highlighted and the solutions to these limitations are also discussed.

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Section: Streptomycesmentioning

confidence: 99%

Present Status, Limitations, and Prospects of Using Streptomyces Bacteria as a Potential Probiotic Agent in Aquaculture

Butt

Khan

Liu

et al. 2023

Probiotics & Antimicro. Prot.

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“…Actinobacteria usually inhabit soil and aquatic ecosystems and are known to have significant functions in biogeochemical cycles, bioremediation and the production of bacteriocins and other potent bioactive compounds, e.g., novel enzymes and antibiotics [190]. These unique and diverse features made actinobacteria a competent candidate for use in the aquaculture industry [191]. The potent actinobacterial genera are Streptomyces, Micromonospora and a later described genus known as Salinispora [19], but Streptomycetes are the most extensively studied among them.…”

Section: Actinobacteria As Probioticsmentioning

confidence: 99%

“…Like other probiotic microorganisms, actinobacteria were also reported with multiple functions, viz. improved water quality, immunity and growth in aquatic organisms [191]. Further, >50% of the microbial antibiotics are produced by Actinomycetes, of which Streptomyces and Micromonospora are by far the most common [229].…”

Section: Mode Of Actions Of Probiotic Fungi and Actinobacteriamentioning

confidence: 99%

Fungi and Actinobacteria: Alternative Probiotics for Sustainable Aquaculture

Ghosh,

Harikrishnan,

Mukhopadhyay

et al. 2023

Fishes

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Aquatic animals are continually being exposed to stressors under farming conditions, increasing risks to gut health that result in dysbiosis. Since restrictions are imposed on the frequent use of antibiotics in aquaculture, there is emerging demand for economically viable, environmentally safe, and sustainable alternatives for the intensive production of aquaculture species. The application of beneficial microorganisms as probiotics has been suggested and widely practiced in recent times. Bacteria and fungi are ubiquitous microorganisms that can grow in various environments where organic substrates are available. Being rich in nutrients, a fish’s aquatic environment and gastrointestinal tract confer a favorable culture milieu for the microorganisms. However, the colonization and probiotic potential of fungi and mycelial bacteria resembling fungi (actinobacteria), either in the culture environment or within the gastrointestinal tracts of fish, have received less emphasis. Apart from bacilli and lactic acid bacteria, as the most conventionally used probiotics in aquaculture, numerous studies have focused on other promising alternatives. Diverse species of yeasts and molds belonging to the kingdom ‘Fungi’ have been characterized for their prospective roles in nutrition, immunomodulation, and disease prevention in fish. Bioactive compounds such as manno-oligosaccharides and β-glucans are recognized as fungal postbiotics that improve innate immunity and disease resistance in fish. Actinobacteria are known to possess different hydrolytic enzymes and novel secondary metabolites representing their probiotic attributes. The application of these groups in water quality amelioration has also been explored. Thus, this paper presents an overview of the present status of knowledge pertaining to the effects of yeasts (Candida, Cryptococcus, Debaryomyces, Geotrichum, Leucosporidium, Pichia, Rhodosporidium, Rhodotorula, Saccharomyces, Sporidiobolus, Sporobolomyces, Trichosporon and Yarrowialipolytica), molds (Aspergillus spp.) and actinobacteria (Streptomyces) as probiotics in finfish aquaculture, as well as their occurrence within the gastrointestinal tracts of finfish. Furthermore, probiotic mechanisms, selection criteria, and future perspectives on using fungi and actinobacteria as promising probiotics are discussed.

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“…L. rhamnosus belongs to Firmicutes, most of which are beneficial bacteria that improve fish growth, immunity, and disease resistance [47]. Actinobacteria not only removes organic pollutants to improve pond water quality but also helps to improve the immunity and growth of cultured fish [48]. At the genus level, the probiotic L. rhamnosus increased Leucobacter and Microbacterium and decreased Rhodobacter, Gordonia, and Rhodococcus.…”

Section: Gut Histomorphology and Microbial Community Function Regulationmentioning

confidence: 99%

Study on Mechanism of Lactobacillus rhamnosus Mitigating PFOA/PFOS Toxicity in Adult Zebrafish (Danio rerio)

Li,

Chen,

et al. 2023

Preprint

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The EPA has banned PFOA and PFOS as persistent organic pollutants, but their residues in environment should not be underestimated. Based on the demand for healthy aquaculture and safe aquatic products, it is necessary to explore alleviative methods for the toxicity of PFOA and PFOS to fish. This study is the first to investigate the protective effects of Lactobacillus rhamnosus against oxidative damage, neurotoxicity, and gut microbial dysbiosis induced by PFOA and PFOS in adult zebrafish. The results showed that L. rhamnosus effectively alleviated PFOA- and PFOS-induced oxidative stress by restoring superoxide dismutase (SOD), catalase (CAT), and lactate dehydrogenase (LDH) levels. Both PFOA and PFOS caused intestinal tissue damage, and the degree of damage is PFOA+PFOS>PFOS>PFOA. L. rhamnosus can restore damaged intestinal villi and lymphocyte numbers and also have a restorative effect on intestinal tissue damage. The up-regulated proportion of beneficial Firmicutes and Actinobacteria was also found after L. rhamnosus feeding. These findings provide new insights for L. rhamnosus to alleviate the toxicity of PFOA and PFOS to zebrafish and promote the progress of research on the successful use of probiotics in freshwater aquaculture.

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Applications of Actinobacteria in aquaculture: prospects and challenges

Cited by 12 publications

References 103 publications

Present Status, Limitations, and Prospects of Using Streptomyces Bacteria as a Potential Probiotic Agent in Aquaculture

Present Status, Limitations, and Prospects of Using Streptomyces Bacteria as a Potential Probiotic Agent in Aquaculture

Fungi and Actinobacteria: Alternative Probiotics for Sustainable Aquaculture

Study on Mechanism of Lactobacillus rhamnosus Mitigating PFOA/PFOS Toxicity in Adult Zebrafish (Danio rerio)

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