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PHOSPHATE ACCUMULATION IN FAGUS MYCORRHIZAS
Author(s) -
HARLEY J. L.,
MCCREADY C. C.
Publication year - 1981
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1981.tb04749.x
Subject(s) - polyphosphate , phosphate , beech , chemistry , nuclear chemistry , botany , biochemistry , biology
S ummary The quantities of polyphosphate formed in beech mycorrhizas during uptake of KH 2 32 PO 4 were estimated after extraction with cold TCA and KOH. Over an absorption period of 19 h the proportion of absorbed phosphate converted into polyphosphate increases with external phosphate concentration from 22% in 0·16 mM to 44% in 0·98 mM KH 2 PO 4 . Uptake from 64 mM phosphate results in 39 % being accumulated as polyphosphate during 2·5 h. Calculations based on the percentage of phosphate accumulated in the sheath, obtained by dissection, show that a large fraction of the phosphate in the fungus is accumulated as polyphosphate.