Figure 4.

Expression profiles of the differentially expressed transcripts in the Pachycereus pringlei root apex. (a) BLAST2GO biological processes overrepresented in the Initial and Terminal developmental stages of the primary root apex of P. pringlei. Axis: -log₁₀(p-val) of the enrichment test. (b–f) Representative expression profiles. Some of the functionally related transcripts from distinct GO categories could be grouped within a number of expression profiles. For example, several transcripts from the autophagy or amino acid transport GO categories, among others, are included in (b); the amino acid metabolism, amino acid transport, and glycerol-ether metabolism categories are included in (c); nucleosome assembly, translation, and regulation of DNA methylation, are included in (d); protein folding, protein deubiquitylation, and rRNA processing, are included in (e); some transcripts from the translation, and response to oxidative stress categories are included in (f). (b–f): Numbers on the y-axes correspond to the normalized and centered RPKM values for the Initial (IN), intermediate (IT), and Terminal (TR) growth stages.