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Fig. 6 | BMC Plant Biology

Fig. 6

From: A comparative gene co-expression analysis using self-organizing maps on two congener filmy ferns identifies specific desiccation tolerance mechanisms associated to their microhabitat preference

Fig. 6

Mapping quality, clustering results for self-organizing maps (SOM) and GO enrichment of transcripts with similar and significant accumulation patterns associated to a given frond hydration state in H. caudiculatum (a-c) and H. dentatum (d-f). The heatmaps (a and d) shows the number of genes (counts) assigned to each SOM Node (numbered from 1 to 6) and the mean Euclidean distance of genes (distance) mapped to the particular Nodes. The constructed maps with a 2 × 3 hexagonal topology shows a reasonable spread out and small distances over the maps, indicating a good mapping process. Nodes with similar codebook vectors (i.e., the patterns of gene neighboring at each hydration state) lie closer to each other. Red color indicates low count and distance, whereas light yellow indicates high count and distance. From the total six Nodes defined after SOM, boxplots were used to visualize and select those Nodes describing the highest pattern of differentially expressed genes for a given hydration state in H. caudiculatum (b) and H. dentatum (e) (see details in the Result section). For each boxplot, horizontal line represents the median, and bars represent the maximum and minimum values of the scaled gene abundance. The pie charts indicate the GO enrichment terms for the annotated transcripts with the highest pattern of differential expression for each hydration state in H. caudiculatum (c) and H. dentatum (f). X axis labels in boxplots read as follow. FH = Full Hydration; DH = Dehydration; and RH = Rehydration

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