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Table 7 Comparisons of EST abundance of genes related to lignin biosynthesis in different wood development stages.

From: Generation and analysis of expressed sequence tags from six developing xylem libraries in Pinus radiata D. Don

Gene EST abundance in EW and LW EST abundance in JW and MW
  EW a LWb P-value e JW c MW d P-value e
CCoAOMT 16 13 > 0.05 9 12 0.04
C 4H 10 8 > 0.05 4 4 > 0.05
4CL 10 6 > 0.05 8 5 > 0.05
CAD 6 3 0.07 1 4 0.04
C 3H 7 2 > 0.05 2 3 > 0.05
COMT 2 6 > 0.05 3 3 > 0.05
CCR 1 1 > 0.05 2 0 > 0.05
PAL 0 2 > 0.05 2 0 > 0.05
Peroxidase 11 5 0.08 0 7 0.001
Laccase 16 20 > 0.05 16 10 > 0.05
SAMS 15 31 0.05 19 11 > 0.05
Dirigent-like 4 3 > 0.05 3 1 > 0.05
Cytochrome c oxidase 7 7 > 0.05 10 0 0.01
  1. a: The number of ESTs for the combined earlywood (EW) libraries. Total ESTs in the combined earlywood libraries from juvenile, transition and mature age are 2,790;
  2. b: The number of ESTs for the combined latewood (LW) libraries. Total ESTs in the combined latewood libraries from juvenile, transition and mature age are 3,169;
  3. c: The number of ESTs for the combined juvenile wood (JW) libraries. Total ESTs in the combined JW libraries from earlywood and latewood tissues are 2,902;
  4. d: The number of ESTs for the combined mature wood (MW) libraries. Total ESTs in the combined MW libraries from earlywood and latewood tissues are 1,564;
  5. e: Statistical significance according to Audic and Claverie 1997 [79].