Premium
THE PHOSPHORUS METABOLISM OF RHIZOPUS STOLONIFER AND CHAETOMIUM SP. WITH RESPECT TO PHOSPHORUS TRANSLOCATION
Author(s) -
LYON A. J. E.,
LUCAS R. L.
Publication year - 1969
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.1469-8137.1969.tb06497.x
Subject(s) - mycelium , chaetomium , phosphorus , rhizopus , phosphate , hexose , chemistry , hypha , biology , botany , biochemistry , food science , enzyme , penicillium , organic chemistry , fermentation
S ummaryRhizopus stolonifer was able to translocate 32 phosphorus readily through established hyphae, whereas Chaetomium sp. was unable to do so. When colonies of either species were incubated on KH 2 32 PO 4 a range of compounds became labelled in the mycelium but a substantial proportion of absorbed 32 P was present in the form of orthophosphate in both species. After incubating 32 P‐labelled mycelium of Rhizopus stolonifer on unlabelled KH 2 PO 4 , the proportion of 32 P detected in the form of orthophosphate was unchanged. When mycelium of Chaetomium sp. was treated in this way the proportion of label in the orthophosphate fraction was greatly reduced. Mycelium of Rhizopus stolonifer was able to take up hexose [ 32 P] phosphate intact and subsequently hydrolyse it to orthophosphate. In Chaetomium sp. very little 32 P derived from hexose [ 32 P] phosphate appeared as orthophosphate. These results are held to support the view that the ability to translocate phosphorus is associated with rapid turnover of phosphorus compounds.