Cellulolytic activity of Actinomycetes isolated from termites (Termitidae) gut

Pasti, Maria B.; Belli, Maria L.

doi:10.1111/j.1574-6968.1985.tb01574.x

Cited by 84 publications

(43 citation statements)

References 21 publications

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“…This result suggests that Actinobacteria transferred to the wheat bran when the house fly larvae were feeding. Actinobacteria associated with termites facilitate nutrient acquisition from diverse polysaccharides, including cellulose (Pasti and Belli 1985; Watanabe et al 2003) and hemicelluloses (Schäfer et al 1996), and Actinobacteria may similarly facilitate the utilization of polysaccharides in wheat bran by house flies. Arabinoxylans and β-glucans are polysaccharides in the cell wall of wheat bran and have a potential role in lowering the risk of type II diabetes, colorectal cancer and cardiovascular and diverticular diseases (Poutanen et al 2014).…”

Section: Discussionmentioning

confidence: 99%

The gut microbiota in larvae of the housefly Musca domestica and their horizontal transfer through feeding

et al. 2017

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House fly larvae provide a prolific and sustainable source of proteins used in poultry and fish feed. Wheat bran is a superior diet for house fly larvae and has been widely investigated to exploit its potential in the food and feed area. Using Illumina MiSeq 16S rDNA sequencing, this study investigated the gut microbiota of house fly larvae feeding on wheat bran and the bacterial community in the wheat bran. The bacterial communities in the house fly larvae were dominated by the phyla Proteobacteria and Firmicutes. Enterobacteriaceae and Providencia were the predominant bacteria at the family and genus levels, respectively. Some bacteria in the phyla Actinobacteria, Proteobacteria, Bacteroidetes and Firmicutes may be transferred from the gut of house flies to the wheat bran during feeding and may be involved in degrading and utilizing polysaccharides in the cell wall of wheat bran. The significance of the gut microbiota of house fly larvae, their transferring and roles in degradation of wheat bran is discussed. These findings regarding the gut microbiota of house fly larvae will provide opportunities for research on the impact of microbial communities on poultry and fish.Electronic supplementary materialThe online version of this article (doi:10.1186/s13568-017-0445-7) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

The gut microbiota in larvae of the housefly Musca domestica and their horizontal transfer through feeding

et al. 2017

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“…These microbes possess diverse bioactive functions to biosynthesize several applicable metabolites such as enzymes (3, 19, 26, 27, 29, 32) and antimicrobial substances (20, 21). Few studies have evaluated the antimicrobial function of cultivable actinobacteria isolated from termite-related sources especially in the termite gut (20, 21).…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies examined the microbial biota within the termite gut, and actinobacteria were identified as one of the dominant bacteria in this symbiotic lifestyle (3, 6, 20, 21, 26, 27). These symbiotic actinobacteria provide assisting functions for termites, such as nutrient cycling and exchange, and also protect termites from invading pathogens.…”

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confidence: 99%

“…These symbiotic actinobacteria provide assisting functions for termites, such as nutrient cycling and exchange, and also protect termites from invading pathogens. Some of these termite-associated actinobacteria may also exhibit lignin-cellulolytic activity (3, 26, 27) and antagonistic activity against diverse pathogens (20, 21). Furthermore, some novel and prospective novel species of actinobacteria associated with termites have been reported previously (25, 32, 33).…”

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confidence: 99%

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Termite Nests as an Abundant Source of Cultivable Actinobacteria for Biotechnological Purposes

2014

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A total of 118 actinobacterial isolates were collected from the three types of termite nests (mound, carton, and subterranean nests) to evaluate their potential as a source of bioactive actinobacteria with antimicrobial activity. The highest number (67 isolates) and generic abundance (7 known genera) of actinobacterial isolates were obtained from carton nests. Streptomyces was the dominant genus in each type of termite nest. In the non-Streptomyces group, Nocardia was the dominant genus detected in mound and carton nests, while Pseudonocardia was the dominant genus in subterranean nests. A discovery trend of novel species (<99% similarity in the 16S rRNA gene sequence) was also observed in the termite nests examined. Each type of termite nest housed >20% of bioactive actinobacteria that could inhibit the growth of at least one test organism, while 12 isolates, belonging to the genera Streptomyces, Amycolatopsis, Pseudonocardia, Micromonospora and Nocardia, exhibited distinct antimicrobial activities. Streptomyces sp. CMU-NKS-3 was the most distinct bioactive isolate. It was closely related to S. padanus MITKK-103T, which was confirmed by 99% similarities in their 16S rRNA gene sequences. The highest level of extracellular antimicrobial substances was produced by the isolate CMU-NKS-3, which was grown in potato dextrose broth and exhibited a wide range (6.10×10−4–1.25 mg mL−1) of minimum inhibitory concentrations against diverse pathogens. We concluded that termite nests are an abundant source of bioactive strains of cultivable actinobacteria for future biotechnological needs.

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“…comm.). All other known insect-associated actinomycetes (gut associates of Culex mosquitos, [57], and of termites, [58] belong to the Streptomycetinae, a subfamily to which none of our sequences belongs. In conclusion, from the information currently present we cannot say what effect the isolated actinomycete strains may have on A. octospinosus.…”

Section: Discussionmentioning

confidence: 99%

The diversity of microorganisms associated with Acromyrmex leafcutter ants

2002

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Background: Molecular biological techniques are dramatically changing our view of microbial diversity in almost any environment that has so far been investigated. This study presents a systematic survey of the microbial diversity associated with a population of Acromyrmex leafcutter ants. In contrast to previous studies on social insects, which targeted specific groups of symbionts occurring in the gut (termites, Tetraponera ants) or in specialised cells (Camponotus ants) the objective of our present study was to do a total screening of all possible micro-organisms that can be found inside the bodies of these leafcutter ants.

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Cellulolytic activity of Actinomycetes isolated from termites (Termitidae) gut

Cited by 84 publications

References 21 publications

The gut microbiota in larvae of the housefly Musca domestica and their horizontal transfer through feeding

The gut microbiota in larvae of the housefly Musca domestica and their horizontal transfer through feeding

Termite Nests as an Abundant Source of Cultivable Actinobacteria for Biotechnological Purposes

The diversity of microorganisms associated with Acromyrmex leafcutter ants

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