NXCI_023_B12_F NXCI (Nsf Xylem Compression wood Inclined) Pinus taeda cDNA clone NXCI_023_B12 5' similar to Arabidopsis thaliana sequence At3g17820 glutamine synthetase, putative see http://mips.gsf.de/proj/thal/db/index.html, mRNA sequence