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Main Title Temporal Allocation of (14)C to Extramatrical Hyphae of Ectomycorrhizal Ponderosa Pine Seedlings.
Author Miller, S. L. ; Durall, D. M. ; Rygiewicz, P. T. ;
CORP Author Oregon State Univ., Corvallis.;National Science Foundation, Washington, DC.;Forest Service, Washington, DC.;Corvallis Environmental Research Lab., OR.
Publisher c1989
Year Published 1989
Report Number NSF-BSR85-05792 ;NSF-BSR85-05975; EPA/600/J-89/113;
Stock Number PB90-108424
Additional Subjects Pine trees ; Carbon 14 ; Time dependence ; Fungi ; Plant anatomy ; Reprints ; Pinus ponderosa laws ; Hebeloma crustuliniforme ; Pharmacokinetics
Library Call Number Additional Info Location Last
NTIS  PB90-108424 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 13p
Ponderosa pine seedlings were inoculated with Hebeloma crustuliniforme either in growth pouches before they were transplanted to root-mycocosms (P seedlings), or at the time of transfer to root-mycocosms (V seedlings). Uninoculated seedlings served as controls (U seedlings). The use of root-mycocosms allowed examination of portions of hyphae separate from roots and rooting substrate but still in symbiosis with the host. The results thus provided a quantitative basis for estimating hyphal mass and carbon allocation to extramatrical hyphae. The amount of 14CO2 fixed after a 2-h exposure was greatest for P seedlings and least for uninoculated seedlings. Four and nine days after exposure, 14C content was greatest in uninoculated seedlings and least in inoculated seedlings. In isotope distribution and dry mass accumulation, V seedlings were more similar to U than to P seedlings. Calculated on a dry weight basis, the allocation of isotope to mycelium suggested that extramatrical hyphae of P seedlings were a stronger sink for carbon than extramatrical hyphae of V seedlings. (Copyright (c) 1989 Heron Publishing, Victoria, Canada.)