期刊
JOURNAL OF PHYCOLOGY
卷 57, 期 6, 页码 1681-1698出版社
WILEY
DOI: 10.1111/jpy.13194
关键词
Atlantic phylogeography; fucoid algae; Granulosicoccus; macroalgal holobiont; parallel microbiome evolution; Pleurocapsa; Sulfitobacter
资金
- Pew Marine fellowship
- US NSF Dimensions of Biodiversity Program (Division of Environmental Biology) [NSF 1442231, NSF 1442106]
- [SFRH/BSAB/150485/2019]
- [Biodiversa/0004/2015]
- [UIDB/04326/2020]
- [CEECINST/00114/2018]
- Fundação para a Ciência e a Tecnologia [BIODIVERSA/0004/2015, SFRH/BSAB/150485/2019, CEECINST/00114/2018/CP1492/CT0001, PRAXIS XXI/BD/15742/98, UIDB/04326/2020] Funding Source: FCT
The research found distinctive latitudinal distributions of microbiomes associated with Fucus vesiculosus, driven by specific ASVs that were more abundant in cold temperate to subarctic or warm temperate latitudes. These distributions correlated with humidity, tidal heights, and air/sea temperatures, but not with irradiance or photoperiod. The study also revealed novel phylogenetic biodiversity in potentially symbiotic genera with differential distributions among tissues and regions, suggesting a combination of past and contemporary environmental drivers influencing the cross-Atlantic microbial structure of F. vesiculosus.
Latitudinal diversity gradients have provided many insights into species differentiation and community processes. In the well-studied intertidal zone, however, little is known about latitudinal diversity in microbiomes associated with habitat-forming hosts. We investigated microbiomes of Fucus vesiculosus because of deep understanding of this model system and its latitudinally large, cross-Atlantic range. Given multiple effects of photoperiod, we predicted that cross-Atlantic microbiomes of the Fucus microbiome would be similar at similar latitudes and correlate with environmental factors. We found that community structure and individual amplicon sequencing variants (ASVs) showed distinctive latitudinal distributions, but alpha diversity did not. Latitudinal differentiation was mostly driven by ASVs that were more abundant in cold temperate to subarctic (e.g., Granulosicoccus_t3260, Burkholderia/Caballeronia/Paraburkholderia_t8371) or warm temperate (Pleurocapsa_t10392) latitudes. Their latitudinal distributions correlated with different humidity, tidal heights, and air/sea temperatures, but rarely with irradiance or photoperiod. Many ASVs in potentially symbiotic genera displayed novel phylogenetic biodiversity with differential distributions among tissues and regions, including closely related ASVs with differing north-south distributions that correlated with Fucus phylogeography. An apparent southern range contraction of F. vesiculosus in the NW Atlantic on the North Carolina coast mimics that recently observed in the NE Atlantic. We suggest cross-Atlantic microbial structure of F. vesiculosus is related to a combination of past (glacial-cycle) and contemporary environmental drivers.
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