Skip to main content
. 2021 May 28;12:668940. doi: 10.3389/fgene.2021.668940

FIGURE 2.

FIGURE 2

Genomic locations of microRNAs (miRNAs) in Populus trichocarpa genome. (A) Genomic distribution of 152 Marssonina brunnea responsive miRNAs. Chromosomes are represented by the circle, and the inner circles (short orange lines) represent the location of miRNAs at the genome. The central colorful lines represent lines that connect syntenic block across chromosomes. (B) miRNA locations at the intergenic and protein-encoding genes (PEGs) region. The two charts on the top right indicate the locations of miRNA precursor sequences (MIRs) in the regions of PEGs. The two charts on the bottom left indicate the detailed classifications of MIRs overlapping with transposon, pseudogenes, and promoter region. (C) miRNA origin from pseudogenes and targeted parent gene. miR393c and miR6438b were selected as representative miRNAs. (D) Mechanism of miRNA gene origin from transposon. (E) Mechanism of miRNA gene origin from pseudogenes and feedback regulated the parent gene.