Fig. 7.

Expression patterns of PtLecRLK genes. RNA-seq data were collected from the Populus Gene Atlas Study in Phytozome v11.0 (http://phytozome.jgi.doe.gov/pz/portal.html). The FPKM value of four different tissue types including root (root ant root tip), leaf (immature, young and floral), stem (internode and node) and bud (predormant stage I and II, early and late dormant, and fully opened) were analyzed. The tissue specificity of gene expression was determined by the comparison of FPKM value ≥1 in a given tissue versus FPKM < 1 in other tissues. Four different zones were categorized (Zone I: transcript undetectable in all tissues; Zone II: transcript detected in all tissue types; Zone III: transcript only detected in roots; Zone IV: transcript only detected in bud tissues). a The expression patterns of the G-type PtLecRLK genes. b The expression patterns of the L-type PtLecRLK genes. c The expression pattern of the C-type PtLecRLK gene. d RT-PCR analysis