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Secretion of phytase from the roots of several plant species under phosphorus-deficient conditions

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Title Secretion of phytase from the roots of several plant species under phosphorus-deficient conditions
 
Creator Li, M
Osaki, M
Rao, Idupulapati M.
Tadano, T
 
Subject BRACHIARIA BRIZANTHA
ORYZA SATIVA
LYCOPERSICON ESCULENTUM
LUPINUS ALBUS
DACTYLIS
TRIFOLIUM
ANDROPOGON GAYANUS
BRACHIARIA DECUMBENS
STYLOSANTHES GUIANENSIS
PHYTASE
PHOSPHORUS
ELECTROPHORESIS
DRY MATTER CONTENT
BRACHIARIA BRIZANTHA
ORYZA SATIVA
LYCOPERSICON ESCULENTUM
LUPINUS ALBUS
DACTYLIS
TRIFOLIUM
ANDROPOGON GAYANUS
BRACHIARIA DECUMBENS
STYLOSANTHES GUIANENSIS
FITASA
FÓSFORO
ELECTROFORESIS
CONTENIDO DE MATERIA SECA
 
Description Phosphorus (P) deficiency increased the secretion of phytases from roots of various plant species. The secretory phytases were collected with a dialysis membrane tube for 24 hours from roots of sixteen plant species grown with low or adequate supply of P in nutrient solutions. The activity of not only secretory phytase, but also acid phosphatase, increased with the low P treatment in all of the plant species examined. Secretion of phytase by the roots under P-deficient conditions was highest in Brachiaria decumbens CIAT 606, Stylosanthes guianensis CIAT 184 and tomato, moderate in Brachiaria brizantha CIAT6780, Stylosanthes guianensis CIAT 2950, alfalfa, white clover and orchard grass, and lowest in Andropgon gayanus CIAT 621, Stylosanthes capitata CIAT 10280, upland rice, timothy, redtop, alsike clover, red clover and white lupin plants. An immunoreactive protein band that reacted with a polyclonal antibody raised against wheat bran phytase, corresponding to molecular weight 35 40 kD, could be detected in seven of the species tested. These results indicate that the secretory phytase may provide an efficient mechanism for certain plants to utilize inositol hexaphosphate in soil.
Peer-reviewed
 
Date 2014-10-02T08:33:11Z
2014-10-02T08:33:11Z
1997
 
Type Journal Article
 
Identifier 1573-5036
https://hdl.handle.net/10568/44072
 
Language en
 
Source Plant and Soil