Significance of endomycorrhizas in tussock grassland in Otago, New Zealand

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Abstract
Endomycorrhizas and Endogone spores are ubiquitous in Otago tussock grassland. Typical Endogone endophytes predominate. but Rhizophagus tenuis is common in high-altitude grasses, and predominates in transplants brought to low altitude. Glasshouse and field experiments indicate that only at higher altitudes in Otago tussock grasslands is the phosphorus available in soil in the range (Festuca novae-zelandiae, Poa laevis, P. colensoi, Chionochloa rigida. C. macra). only two—Chionochloa rigida and Poa colensoi—seem likely to benefit from endomycorrhizal infection in their natural soils.