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THE EFFECT OF p H ON THE UPTAKE AND ACCUMULATION OF PHOSPHATE AND SULFATE IONS BY BEAN PLANTS
Author(s) -
Hendrix John E.
Publication year - 1967
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1967.tb10677.x
Subject(s) - phosphate , sulfate , absorption (acoustics) , biology , ion , transpiration , botany , zoology , biochemistry , nuclear chemistry , chemistry , materials science , photosynthesis , composite material , organic chemistry
Phosphate uptake above p H 6.0 followed the concentration of H 2 PO 4 . Sulfate studies were used to aid evaluation of phosphate data. Phosphate absorption was nearly linearly proportional to transpiration at p H 4.0; at p H 8.7, phosphate absorption occurred only early in the experiments. It was inferred that phosphate entered as H 2 PO 4 ; that which entered at p H 8.7 did so as the result of a depressed p H at the absorption sites.