DEGRADATION OF ENDOGENOUS ORGANIC-ACIDS INDUCED BY P-I UPTAKE IN CATHARANTHUS-ROSEUS CELLS - INVOLVEMENT OF THE BIOCHEMICAL PH-STAT

Authors
SAKANO K KIYOTA S YAZAKI Y
Citation
K. Sakano et al., DEGRADATION OF ENDOGENOUS ORGANIC-ACIDS INDUCED BY P-I UPTAKE IN CATHARANTHUS-ROSEUS CELLS - INVOLVEMENT OF THE BIOCHEMICAL PH-STAT, Plant and Cell Physiology, 39(6), 1998, pp. 615-619
Citations number
24
Categorie Soggetti
Plant Sciences","Cell Biology
Journal title
Plant and Cell Physiology → ACNP
ISSN journal
00320781
Volume
39
Issue
6
Year of publication
1998
Pages
615 - 619
Database
ISI
SICI code
0032-0781(1998)39:6<615:DOEOIB>2.0.ZU;2-#
Abstract
We have previously shown that inorganic orthophosphate (P-i) uptake by Catharanthus roseus cells proceeds by a proton/P-i cotransport mechan ism [Sakano (1990) Plant Physiol. 93: 479] that acidifies the cytoplas m [Sakano et al. (1992) Plant Physiol. 99: 672]. In the present study, we analyzed changes in the content of endogenous organic acids, carbo n dioxide evolution, and oxygen consumption upon P-i application. The results are consistent with the operation of the biochemical ps-stat m echanism [Davies (1986) Physiol. Plant. 67: 702] during and after P-i uptake.