Fig. 1
From: Enzyme secretion by ECM fungi and exploitation of mineral nutrients from soil organic matter
Distinct enzymatic profiles of two common ECMs on Norway spruce (Picea abies (L.) Karst.) sampled within the O-horizon a Cenococcum geophilum Fr., b Russula ochroleuca (Pers.) Fr.. Sampling took place in October 2007 at the mixed beech-spruce stand “Kranzberger Forst” in Germany (for a site description see Pretzsch et al. 1998). The grey area indicates the proportion of the morphotype within the ECM community (number of tips colonised by morphotype/total number of tips) which was 59/372 = 15.8% for C. geophilum and 30/372 = 8.1% for R. ochroleuca; the black area shows the relative contribution [%] of each morphotype to the total enzymatic activities of the community (activity × proportion of each morphotype/sum of activities of all morphotypes). The contribution of C. geophilum and R. ochroleuca to the activity of the total community was lower for most enzyme activities than could be expected from their proportion in the community with few exceptions: C. geophilum had relatively high phenoloxidase activity, and R. ochroleuca showed relatively high phosphatase and N-acetylglucosaminidase activities. Both ECMs lack leucine aminopeptidase activity. glr glucuronidase, xyl xylosidase, cel cellobiohydrolase, gls ß-glucosidase, nag N-acetylglucosaminidase, pho acid phosphatase, leu leucine aminopeptidase, phe phenoloxidase. Data for this figure were kindly provided by Jana Ernst