Evidence for differential responses between host-fungus combinations of vesicular-arbuscular mycorrhizas from a grassland

摘要: The increase in spore density over that the soil of an indigenous vesicular-arbuscular (VA) mycorrhizal community was measured five plant species, after inoculation with same (Experiment 1), and pots containing individuals which had been removed from field site 2). In Experiment 1, significant observed for Glomus constrictum Plantago lanceolata although increases were not this fungus other host species. Results 2 consistent combination numbers Acaulospora laevis spores, Holcus lanatus or Rumex acetosa , significantly higher than site. results do support oppose hypotheses either multiple infection selectivity VA mycorrhizas occur between certain combinations host-fungus co-existing plants a natural community. indicate fungi respond differently according to species thus such differences could result selection pressures favour combinations.