Fig 1.
Four morphological parts of a Laminaria digitata thallus.
Table 1.
Number of raw read-pair counts, quality-filtered and chloroplast removed sequences, normalizing correction applied, and final normalized read abundances of bacterial communities associated with the holdfast (HF), stipe (SP), meristem (MST) and blade (BD) of L. digitata.
Fig 2.
Species richness, sequencing depth and alpha diversity measures of the microbial communities associated with holdfast (HF), stipe (SP), meristem (MST) and blade (BD) of L. digitata.
Boxplot; middle is median, outer margins are 25th & 75th percentiles; whiskers cover points within 1.5 interquartile ranges.
Fig 3.
(A) Relative abundance of individual samples and (B) average relative abundance of corresponding samples at genus level of the holdfast (HF), stipe (SP), meristem (MST) and blade (BD) of L. digitata.
Miscellaneous; bacterial phyla with less than 0.005 rank mean sample relative abundance.
Fig 4.
(A) Relative abundance of individual samples and (B) average relative abundance of corresponding samples at phylum level of the holdfast (HF), stipe (SP), meristem (MST) and blade (BD) of L. digitata.
Miscellaneous; bacterial phyla with less than 0.005 rank mean sample relative abundance.
Fig 5.
Principal coordinate analysis (PCoA) plot based on Bray-Curtis distance matrix of the epibacterial communities associated with the holdfast (HF), stipes (SP), meristem (MST) and blades (BD) of L. digitata.
Fig 6.
Venn diagram showing unique and overlapping amplicon sequence variants (ASVs) identified in L. digitata bacterial communities categorized region.
Abbreviations; holdfast (HF), meristem (MST), blade (BD) and stipe (SP).
Fig 7.
A heatmap of the 52 most abundant ASVs illustrating the broad differences in community composition between locations on L. digitata.
Abundances are normalized to unit-variance (z-score transformation). Abbreviations: Proteobactr: Proteobacteria, Bacterodts: Bacteroidetes, Plnctmycts: Planctomycetes, Actinobctr: Actinobacteria, SprW: Spearman correlation with Ward-linkage, HF: holdfast, SP: stipe, MST: meristem, BD: blade.