Haselwandter K, Read D J
Institut für Mikrobiologic, Universität Innsbruck, Sternwartestraße 15, A-6020, Innsbruck, Austria.
Department of Botany, University of Sheffield, S10 2TN, Sheffield, England.
Oecologia. 1982 Jun;53(3):352-354. doi: 10.1007/BF00389012.
The relationship between roots of Carex firma, C. sempervirens and their commonly occuring dark septate fungal associates was examined. Two typical fungal associates were isolated and reinoculated onto aseptically grown seedlings of the two host species. Both isolates produced significant increases of dry matter production in C. firma compared with uninoculated controls. No growth stimulation was obtained in C. sempervirens. Shoot phosphorus concentrations were significantly increased in both host species by inoculation. The absence of growth stimulation in C. sempervirens may be due to carbon drain imposed by the fungus or to the fact that nutrients other than phosphorus are growth limiting. The nature and possible ecological significance of the root-fungus association is discussed and it is suggested that the relationship is mutualistic rather than parasitic.
研究了硬苔草、常绿苔草的根系与其常见的深色有隔真菌共生体之间的关系。分离出两种典型的真菌共生体，并将其重新接种到两种寄主植物无菌培养的幼苗上。与未接种的对照相比，两种分离物均使硬苔草的干物质产量显著增加。在常绿苔草中未获得生长刺激。接种使两种寄主植物地上部磷浓度均显著增加。常绿苔草未出现生长刺激可能是由于真菌造成的碳消耗，或者是除磷以外的其他养分限制了生长。讨论了根-真菌共生关系的性质及其可能的生态意义，并认为这种关系是互利共生而非寄生关系。
