PHOSPHATE DEFICIENCY IN MAIZE .4. CHANGES IN AMOUNTS OF SUCROSE-PHOSPHATE SYNTHASE DURING THE COURSE OF PHOSPHATE DEPRIVATION

Authors
USUDA H SHIMOGAWARA K
Citation
H. Usuda et K. Shimogawara, PHOSPHATE DEFICIENCY IN MAIZE .4. CHANGES IN AMOUNTS OF SUCROSE-PHOSPHATE SYNTHASE DURING THE COURSE OF PHOSPHATE DEPRIVATION, Plant and Cell Physiology, 34(5), 1993, pp. 767-770
Citations number
16
Categorie Soggetti
Plant Sciences
Journal title
Plant and Cell Physiology → ACNP
ISSN journal
00320781
Volume
34
Issue
5
Year of publication
1993
Pages
767 - 770
Database
ISI
SICI code
0032-0781(1993)34:5<767:PDIM.C>2.0.ZU;2-4
Abstract
With low-P treatment of maize, the level of sucrose phosphate synthase (SPS) protein decreased to 15% of the control, while the ''V(max)'' a ctivity stayed relatively high (100-80% of the control) and the substr ate limiting activity increased about 2 fold in the leaves. These resu lts suggest that leaf phosphate status has dual effects on the amount of SPS protein and the activation state of SPS.