Translocation of Cations to Seedlings of Pinus virginiana Through Mycorrhizal Mycelium

Abstract

1. Mycorrhizal seedlings of Pinus virginiana Mill. were cultured aseptically with mycorrhizae produced by Rhizopogon roseolus (Corda) Th. Fr. The fungus was exposed to Na22, and the movement of the isotope into the seedlings was observed. 2. The experiments showed that relatively large amounts of sodium were absorbed from the external supply and transferred to the mycorrhizae through the fungus in 48 hours. From them the ions were readily translocated into the root and shoot tissues.