Abstract
Free amino acids and related compounds together with total nitrogen, total protein and soluble small‐molecular nitrogen were analyzed quantitatively in monthly tissue samples from bilberry, Vaccinium myrtillus, from 15 May to 24 September 1985, in Oulu, northern Finland. Pronounced accumulation (at the millimolar level) of soluble low‐molecular‐weight nitrogen in the form of free amino acids was observed at the end of September. Arginine in particular accumulated in the rhizomes and older branches. Protein levels remained relatively constant. Mobilization of amino acids from winter storage into the growing tissues (buds) was evident in May.
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