Probiotics: The New Ecofriendly Alternative Measures of Disease Control for Sustainable Aquaculture

Sihag, R. C.; Sharma, Parvati

doi:10.3923/jfas.2012.72.103

Cited by 66 publications

(41 citation statements)

References 116 publications

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“…Previous reports have demonstrated positive results in the use of beneficial microbes as an alternative to toxic chemicals against infectious diseases caused by fungi in natural environments (44)(45)(46). For example, Becker et al utilized a probiotic bath of the metabolite produce by a bacterium isolated from skin of amphibians to increase survival of amphibians infected with a lethal fungus, Batrachochytrium dendrobatidis (7,44).…”

Section: Discussionmentioning

confidence: 99%

Western Bats as a Reservoir of Novel Streptomyces Species with Antifungal Activity

Hamm

Caimi

Northup

et al. 2017

Appl Environ Microbiol

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At least two-thirds of commercial antibiotics today are derived from Actinobacteria, more specifically from the genus Streptomyces. Antibiotic resistance and new emerging diseases pose great challenges in the field of microbiology. Cave systems, in which actinobacteria are ubiquitous and abundant, represent new opportunities for the discovery of novel bacterial species and the study of their interactions with emergent pathogens. White-nose syndrome is an invasive bat disease caused by the fungus Pseudogymnoascus destructans, which has killed more than six million bats in the last 7 years. In this study, we isolated naturally occurring actinobacteria from white-nose syndrome (WNS)-free bats from five cave systems and surface locations in the vicinity in New Mexico and Arizona, USA. We sequenced the 16S rRNA region and tested 632 isolates from 12 different bat species using a bilayer plate method to evaluate antifungal activity. Thirty-six actinobacteria inhibited or stopped the growth of P. destructans, with 32 (88.9%) actinobacteria belonging to the genus Streptomyces. Isolates in the genera Rhodococcus, Streptosporangium, Luteipulveratus, and Nocardiopsis also showed inhibition. Twenty-five of the isolates with antifungal activity against P. destructans represent 15 novel Streptomyces spp. based on multilocus sequence analysis. Our results suggest that bats in western North America caves possess novel bacterial microbiota with the potential to inhibit P. destructans. IMPORTANCE This study reports the largest collection of actinobacteria from bats with activity against Pseudogymnoascus destructans, the fungal causative agent of white-nose syndrome. Using multigene analysis, we discovered 15 potential novel species. This research demonstrates that bats and caves may serve as a rich reservoir for novel Streptomyces species with antimicrobial bioactive compounds.KEYWORDS Actinobacteria, bats, caves, Pseudogymnoascus, Streptomyces, white-nose syndrome P resently, 90% of antibiotics are derived from microorganisms within the phylum Actinobacteria (1-3). The family Streptomycetaceae is particularly known for the production of chitinases capable of hydrolyzing the cell wall (4) and targeting ergosterol in the cell membrane of fungi (5). The rapid development of antibiotic resistance and the emergence of infectious diseases in humans and other animals, including bats and amphibians, have prompted the study of the bacterial microbiome and use for probiotic treatment in vertebrates (6, 7).

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Section: Discussionmentioning

confidence: 99%

Western Bats as a Reservoir of Novel Streptomyces Species with Antifungal Activity

Hamm

Caimi

Northup

et al. 2017

Appl Environ Microbiol

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“…The most common members of the microflora of healthy fishes are Vibrio spp., Pseudomonas spp., Acinetobacter spp. (Sihag and Sharma 2012). Raaska and Mattila-Sandholm (1995) determined the antagonistic properties of non-pathogenic Staphylococcus strains against moulds and yeasts.…”

Section: Discussionmentioning

confidence: 99%

In vitro evaluation of adhesion and aggregation abilities of four potential probiotic strains isolated from guppy (Poecilia reticulata)

Balakrishna¹

2013

Braz. arch. biol. technol.

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The aim of this work was to study the probiotic-related characteristics of four strains of bacteria isolated from the normal flora of the guppy, Poecilia reticulata. In vitro results showed that the strains, namely, MBTU_PB1, MBTU_PB2, MBTU_PB3 and MBTU_PB4 had higher adhesion abilities than the tested indicator strains. However, an association between the cell-surface hydrophobicity and the ability to adhere to the intestinal mucus was not observed for these strains. Further, the selected strains were strongly autoaggregating (autoaggregation percentage ≥ 80) and also showed strain-specific coaggregation abilities with the tested indicator strains.

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“…Nowadays, several alternative strategies such as immunostimulants, probiotics, green water technique, vaccination and quorum sensing have been introduced in aquaculture to improve fish resistance to pathogen and improve growth performance (Markestad and Grave 1997;Brekke 1998;Sakai 1999;Rodgers and Furones 2009;Defoirdt et al 2011;Romero et al 2012;Sihag and Sharma 2012;Revertera et al 2014). Mello et al (2013) observed an increase in intestinal goblet cell count (GC) in tilapia fed dietary probiotic supplementation.…”

Section: Introductionmentioning

confidence: 99%

Effect of Henna (Lawsonia inermis) extract on the immunity and survival of common carp, Cyprinus carpio infected with Aeromonas hydrophila

Soltanian

Fereidouni

2016

Int Aquat Res

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In this study, the immunomodulatory properties of Lawsonia inermis (henna) in common carp, Cyprinus carpio was investigated. Fish were intraperitoneally (i.p.) injected with 6, 60 or 600 mg kg -1 body weight (BW), of the methanolic soluble fractions of L. inermis. The extract at 60 and 600 mg kg -1 BW, significantly (p \ 0.05) enhanced some non-specific immune parameters such as serum lysozyme and bactericidal activity, phagocytic and respiratory burst activity, total leucocyte count (TLC), lymphocyte, monocyte and neutrophil number. Disease resistance against Aeromonas hydrophila has also been improved following herbal treatment. This preliminary study indicates the beneficial effect of L. inermis in improving immune status and controlling infectious diseases in aquaculture.

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Probiotics: The New Ecofriendly Alternative Measures of Disease Control for Sustainable Aquaculture

Cited by 66 publications

References 116 publications

Western Bats as a Reservoir of Novel Streptomyces Species with Antifungal Activity

Western Bats as a Reservoir of Novel Streptomyces Species with Antifungal Activity

In vitro evaluation of adhesion and aggregation abilities of four potential probiotic strains isolated from guppy (Poecilia reticulata)

Effect of Henna (Lawsonia inermis) extract on the immunity and survival of common carp, Cyprinus carpio infected with Aeromonas hydrophila

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