© 1998 Heron Publishing—Victoria, Canada
Effect of season and soil treatments on carbohydrate concentrations in Norway spruce (Picea abies) mycorrhizae
R. Kleinschmidt (1), I. Hentschke (1) and G. M. Rothe (1, 2)
1. Institut für Allgemeine Botanik, Johannes Gutenberg-Universität, 55099 Mainz, Germany / 2. Author to whom correspondence should be addressed / Received March 10, 1997
Summary
We studied effects of season and soil treatments (watering, acidification, liming and combinations of these treatments) on
soluble carbohydrates of mycorrhizal roots of Norway spruce (Picea abies (L.) Karst.). Arabinose, arabitol, fructose, glucose, inositol, lactose, mannitol, pinite, quinate, raffinose, shikimate,
stachyose and trehalose were identified by HPLC. Concentrations of inositol, lactose and pinite were constant throughout the
year, whereas concentrations of raffinose, stachyose and trehalose were higher in winter than in summer, and concentrations
of glucose, fructose and mannitol increased from February to September.
Soil acidification and liming had no effect on the annual mean concentrations of fructose, glucose, lactose, pinite, raffinose
and stachyose. Liming increased quinate concentrations and decreased arabitol concentrations. Annual mean concentrations of
arabinose and mannitol decreased in response to soil acidification. Annual mean concentrations of inositol increased in response
to irrigation. None of the soil treatments affected the mean annual concentration of trehalose.
Keywords:
carbohydrates, liming, mycorrhiza, roots, seasonal variation, soil acidification.
