AlonsoGarciaVillarreal2022

Référence

Alonso-García, M., Villarreal, J.C. (2022) Bacterial community of reindeer lichens differs between northern and southern lichen woodlands. Canadian Journal of Forest Research, 52(5):662-673. (URL )

Résumé

Lichens cover nearly 7\% of the earth’s surface, and in eastern Canada, lichen woodlands occupy over 300 000 km2. Reindeer lichens (genus Cladonia) are the main component of lichen woodlands and they play a crucial role in boreal forest ecology. We study, for the first time, the bacterial community of four species of reindeer lichens from eastern North America’s boreal forests. Using the 16S rRNA gene, we characterize the bacterial community of 189 lichen samples. We aim to analyse the effect of geography and host identity in the bacterial community composition and structure, verify the presence of a common core bacteria, and identify the most abundant core taxa. Our results suggest that host-lichen identity does not determine bacterial community composition and structure in reindeer lichens, but we confirm the influence of geography in shaping the diversity and abundance of bacteria associated with Cladonia stellaris. We also reveal that reindeer lichens share a reduced common core bacteria composed exclusively by Alphaproteobacteria. Northern lichen woodlands exhibit a significantly higher diversity and abundance of bacteria associated with C. stellaris than southern lichen woodlands do. The presence of the species Methylorosula polaris in the core bacteria is evident and may have a particular importance for reindeer lichens.

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@ARTICLE { AlonsoGarciaVillarreal2022,
    AUTHOR = { Alonso-García, M. and Villarreal, J.C. },
    TITLE = { Bacterial community of reindeer lichens differs between northern and southern lichen woodlands },
    DOI = { 10.1139/cjfr-2021-0272 },
    EPRINT = { https://doi.org/10.1139/cjfr-2021-0272 },
    NUMBER = { 5 },
    PAGES = { 662-673 },
    VOLUME = { 52 },
    URL = { https://doi.org/10.1139/cjfr-2021-0272 },
    ABSTRACT = { Lichens cover nearly 7\% of the earth’s surface, and in eastern Canada, lichen woodlands occupy over 300 000 km2. Reindeer lichens (genus Cladonia) are the main component of lichen woodlands and they play a crucial role in boreal forest ecology. We study, for the first time, the bacterial community of four species of reindeer lichens from eastern North America’s boreal forests. Using the 16S rRNA gene, we characterize the bacterial community of 189 lichen samples. We aim to analyse the effect of geography and host identity in the bacterial community composition and structure, verify the presence of a common core bacteria, and identify the most abundant core taxa. Our results suggest that host-lichen identity does not determine bacterial community composition and structure in reindeer lichens, but we confirm the influence of geography in shaping the diversity and abundance of bacteria associated with Cladonia stellaris. We also reveal that reindeer lichens share a reduced common core bacteria composed exclusively by Alphaproteobacteria. Northern lichen woodlands exhibit a significantly higher diversity and abundance of bacteria associated with C. stellaris than southern lichen woodlands do. The presence of the species Methylorosula polaris in the core bacteria is evident and may have a particular importance for reindeer lichens. },
    JOURNAL = { Canadian Journal of Forest Research },
    YEAR = { 2022 },
}

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