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The enzyme CinnamylAlcoholDehydrogenase (CAD) catalyses the last step of lignin monomer synthesis, and is considered as a molecular marker of cell wall lignification in different plants species. Here, we report the isolation and analysis of 5′ flanking genomic DNA regions upstream to the CAD gene, from two conifers, i.e. white spruce (Piceaglauca (Moench) Voss) and loblolly pine (Pinustaeda L...
We isolated the 5′ flanking region of a gene for phenylalanine ammonia-lyase (PAL; EC 4.3.1.5) from Pinus taeda, PtaPAL. To investigate the tissue-specific expression of the PtaPAL promoter, histochemical assay of GUS activity was performed using the transgenic tobacco expressing the PtaPAL promoter-GUS. The region of −897 to −420 in PtaPAL promoter showed high activities in the secondary xylem and...
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