Changes in Total Nitrogen, Protein, Amino Acids and NH4 +in Tissues of Bilberry, Vaccinium myrtillus, during the Growing Season

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...

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Veröffentlicht in:	Holarctic ecology 1990-02, Vol.13 (1), p.31-38
Hauptverfasser:	Lähdesmäki, Pekka, Pakonen, Tuulikki, Saari, Esko, Laine, Kari, Tasanen, Leena, Havas, Paavo
Format:	Artikel
Sprache:	eng
Schlagworte:	Acidic amino acids Amino acid metabolism Amino acids Animal and plant ecology Animal, plant and microbial ecology Autoecology Basic amino acids Biological and medical sciences Fundamental and applied biological sciences. Psychology Growing seasons Leaf buds Nitrogen Nitrogen metabolism Plants Plants and fungi Rhizomes
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Zusammenfassung:	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.
ISSN:	0105-9327