Availability of free amino acids of the glutaminic acid group in the Scotch pine and Siberian larch root tissues in the northern and southern taiga subzones is studied. The lowered share of these compounds in the northern tree tissues in case of high variability of both separate amino acids, and all nonproteogenic amino acids of the group depending on species, tissue type and vegetation term is shown.
Scotch pine, Siberian larch, free amino acids, northern taiga
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