Conidia of Trichoderma virens as a phosphorus source for mycorrhizal Pinus sylvestris seedlings.
In this study, the mobilization and further translocation of phosphorus from conidia of saprotrophic fungus Trichoderma virens into Pinus sylvestris seedlings by nondestructive measuring of (32)P was assessed. The radioactive phosphorus flux from the conidia to the Scots pine seedlings forming mycorrhiza with Laccaria laccata and Suillus bovinus amounted up to 27.82% and 7.42%, respectively, on the 28th day of the experiment, while at the same time in nonmycorrhizal pine seedlings, the detected radioactivity reached only 0.56%. Our studies revealed that both ectomycorrhizal fungi: L. laccata and S. bovinus, mobilized the phosphorus from radioactive conidia of T. virens. On this basis, we conclude that activities of the mycosymbionts may facilitate absorption and further translocation of phosphorus from organic matter into the host plants.
Zadworny
Marcin
M
Laboratory of Root Pathology, Institute of Dendrology, Polish Academy of Sciences, Parkowa 5, 62-035, Kórnik, Poland. zadworny@man.poznan.pl.
Górski
Zbigniew
Z
Institute of Chemistry, Poznań University of Technology, Piotrowo 3, 60-965, Poznań, Poland.
Koczorowska
Elżbieta
E
Institute of Chemistry, Poznań University of Technology, Piotrowo 3, 60-965, Poznań, Poland.
Werner
Antoni
A
Laboratory of Root Pathology, Institute of Dendrology, Polish Academy of Sciences, Parkowa 5, 62-035, Kórnik, Poland.
D017753:Ecosystem; D055399:Laccaria / Q000378:metabolism; D038821:Mycorrhizae / Q000378:metabolism*; D010761:Phosphorus Radioisotopes / Q000378:metabolism; D041605:Pinus sylvestris / Q000378:metabolism / Q000382:microbiology; D036226:Seedlings / Q000378:metabolism / Q000382:microbiology; D012988:Soil Microbiology; D013172:Spores, Fungal / Q000378:metabolism; D014242:Trichoderma / Q000378:metabolism*
D010761:Phosphorus Radioisotopes