| Title: | Nutrient scavenging activity and antagonistic factors of non-photobiont lichen-associated bacteria: a review |
| Author(s): | Sigurbjornsdottir MA; Andresson OS; Vilhelmsson O; |
| Address: | "Department of Natural Resource Sciences, University of Akureyri, Borgir vid Nordurslod, 600, Akureyri, Iceland. mas@unak.is. Faculty of Life and Environmental Sciences, University of Iceland, 101, Reykjavik, Iceland. mas@unak.is. Faculty of Life and Environmental Sciences, University of Iceland, 101, Reykjavik, Iceland. Biomedical Center, University of Iceland, Vatnsmyrarvegur 16, 101, Reykjavik, Iceland. Department of Natural Resource Sciences, University of Akureyri, Borgir vid Nordurslod, 600, Akureyri, Iceland" |
| Journal Title: | World J Microbiol Biotechnol |
| DOI: | 10.1007/s11274-016-2019-2 |
| ISSN/ISBN: | 1573-0972 (Electronic) 0959-3993 (Linking) |
| Abstract: | "Lichens are defined as the specific symbiotic structure comprising a fungus and a green alga and/or cyanobacterium. Up until recently, non-photobiont endothallic bacteria, while known to be present in large numbers, have generally been dismissed as functionally irrelevant cohabitants of the lichen thallus, or even environmental contaminants. Recent analyses of lichen metagenomes and innovative co-culture experiments have uncovered a functionally complex community that appears to contribute to a healthy lichen thallus in several ways. Lichen-associated bacteriomes are typically dominated by several lineages of Proteobacteria, some of which may be specific for lichen species. Recent work has implicated members of these lineages in several important ecophysiological roles. These include nutrient scavenging, including mobilization of iron and phosphate, nitrogen fixation, cellulase, xylanase and amylase activities, and oxidation of recalcitrant compounds, e.g. aromatics and aliphatics. Production of volatile organic compounds, conferring antibacterial and antifungal activity, has also been demonstrated for several lichen-associated isolates. In the present paper we review the nature of non-phototrophic endolichenic bacteria associated with lichens, and give insight into the current state of knowledge on their importance the lichen symbiotic association" |
| Keywords: | Anti-Infective Agents/metabolism *Host-Pathogen Interactions Lichens/*microbiology Metagenome Nitrogen Fixation Proteobacteria/*physiology Symbiosis Volatile Organic Compounds/metabolism Bacteria Endothallic Lichen Microbiome; |
| Notes: | "MedlineSigurbjornsdottir, M Auethur Andresson, Olafur S Vilhelmsson, Oddur eng Review Germany 2016/03/05 World J Microbiol Biotechnol. 2016 Apr; 32(4):68. doi: 10.1007/s11274-016-2019-2. Epub 2016 Mar 1" |
