Abstract
An investigation was carried out on the mycorrhizal colonisation, growth and nutrition of two members of the Ericaceae in close proximity to an arbuscular mycorrhizal (AM) association. This was undertaken by separating mycorrhizal (EM) and non-mycorrhizal (NEM) Erica cinerea and Vaccinium macrocarpon from AM (inoculated by Glomus mosseae) and non-mycorrhizal (NAM) Plantago lanceolata using a 30 µm nylon mesh in a sand culture/pot system. Ericoid mycorrhizal colonisation by Hymenoscyphus ericae on root systems of E. cinerea and V. macrocarpon was in the range 14–22% and 58–69%, respectively. The presence of AM P. lanceolata had no effect on the ericoid mycorrhizal colonisation of E. cinerea and V. macrocarpon. NEM E. cinerea showed reductions in shoot biomass and shoot nitrogen concentrations after exposure to AM P. lanceolata after incubations of 6 and 9 weeks but there were no differences in dry mass, length, and nitrogen and phosphorus concentrations of the root systems between the treatment combinations. Reductions were also found, after incubations of 6 and 9 weeks, in shoot dry mass, leaf area and shoot nitrogen concentrations of NEM V. macrocarpon in the presence of AM P. lanceolata but no changes occurred in the length and dry mass of the root systems. There were no differences in maximum photosynthesis in V. macrocarpon between treatment combinations but NEM V. macrocarpon in the presence of AM P. lanceolata had the lowest transpiration rates and stomatal conductance and the highest nitrogen- and phosphorus-use efficiencies compared with the other treatment combinations. These results are discussed in relation to the type of interaction found in these compatible and incompatible mycorrhizal associations.
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Byrne, K., Mitchell, D.T. Responses of mycorrhizal and non-mycorrhizal Erica cinerea and Vaccinium macrocarpon to Glomus mosseae . Mycorrhiza 14, 31–36 (2004). https://doi.org/10.1007/s00572-003-0273-2
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DOI: https://doi.org/10.1007/s00572-003-0273-2