Fungus-growing Allomerus ants are associated with antibiotic-producing actinobacteria

Seipke, Ryan F.; Barke, Jörg; Ruiz-González, Mario X.; Orivel, Jérôme; Yu, Douglas W.; Hutchings, Matthew I.

doi:10.1007/s10482-011-9621-y

Cited by 43 publications

(34 citation statements)

References 19 publications

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“…Insect-bacterium symbioses are widespread in the environment (458), and antibiotic-producing bacterial symbionts are often recruited to protect the host and/or their resources (459,460). Many insects (e.g., ants, termites, gall midges, and beetles) have developed a specific association with their microbial communities.…”

Section: Interactions Between Actinobacteria and Invertebratesmentioning

confidence: 99%

Taxonomy, Physiology, and Natural Products of Actinobacteria

Barka

Vatsa

Sanchez

et al. 2016

Microbiol Mol Biol Rev

1,442

1,006

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SUMMARYActinobacteriaare Gram-positive bacteria with high G+C DNA content that constitute one of the largest bacterial phyla, and they are ubiquitously distributed in both aquatic and terrestrial ecosystems. ManyActinobacteriahave a mycelial lifestyle and undergo complex morphological differentiation. They also have an extensive secondary metabolism and produce about two-thirds of all naturally derived antibiotics in current clinical use, as well as many anticancer, anthelmintic, and antifungal compounds. Consequently, these bacteria are of major importance for biotechnology, medicine, and agriculture.Actinobacteriaplay diverse roles in their associations with various higher organisms, since their members have adopted different lifestyles, and the phylum includes pathogens (notably, species ofCorynebacterium,Mycobacterium,Nocardia,Propionibacterium, andTropheryma), soil inhabitants (e.g.,MicromonosporaandStreptomycesspecies), plant commensals (e.g.,Frankiaspp.), and gastrointestinal commensals (Bifidobacteriumspp.).Actinobacteriaalso play an important role as symbionts and as pathogens in plant-associated microbial communities. This review presents an update on the biology of this important bacterial phylum.

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Section: Interactions Between Actinobacteria and Invertebratesmentioning

confidence: 99%

Taxonomy, Physiology, and Natural Products of Actinobacteria

Barka

Vatsa

Sanchez

et al. 2016

Microbiol Mol Biol Rev

1,442

1,006

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“…S. misionensis Type Strain NRRL B-3230 was isolated in Misiones, Argentina, and it produces misionin, an antibiotic active against phytopathogenic fungi, including Helminthosporium and Alternaria [28]. Strains from this species have been cited in the literature confirming their presence in certain soils [29] and their antibiotic production capacity [30]; however, there have been no reports that strains of this species can be cellulolytic.…”

Section: Resultsmentioning

confidence: 99%

Streptomyces misionensisPESB-25 Produces a Thermoacidophilic Endoglucanase Using Sugarcane Bagasse and Corn Steep Liquor as the Sole Organic Substrates

Franco-Cirigliano

Rezende

Gravina-Oliveira

et al. 2013

BioMed Research International

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Streptomyces misionensis strain PESB-25 was screened and selected for its ability to secrete cellulases. Cells were grown in a liquid medium containing sugarcane bagasse (SCB) as carbon source and corn steep liquor (CSL) as nitrogen source, whose concentrations were optimized using response surface methodology (RSM). A peak of endoglucanase accumulation (1.01 U·mL−1) was observed in a medium with SCB 1.0% (w/v) and CSL 1.2% (w/v) within three days of cultivation. S. misionensis PESB-25 endoglucanase activity was thermoacidophilic with optimum pH and temperature range of 3.0 to 3.6 and 62° to 70°C, respectively. In these conditions, values of 1.54 U mL−1 of endoglucanase activity were observed. Moreover, Mn2+ was demonstrated to have a hyperactivating effect on the enzyme. In the presence of MnSO4 (8 mM), the enzyme activity increased threefold, up to 4.34 U·mL−1. Mn2+ also improved endoglucanase stability as the catalyst retained almost full activity upon incubation at 50°C for 4 h, while in the absence of Mn2+, enzyme activity decreased by 50% in this same period. Three protein bands with endoglucanase activity and apparent molecular masses of 12, 48.5 and 119.5 kDa were detected by zymogram.

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“…10 South American Allomerus plant-ants and African Tetraponera plant-ants both grow fungi inside their domatia and they are associated with antibiotic-producing actinomycete bacteria. 11,12 …”

Section: Introductionmentioning

confidence: 99%