Degradation of endogenous organic acids induced by Pi uptake in Catharanthus roseus cells:: Involvement of the biochemical pH-Stat

被引：14

作者：

Sakano, K ^{[1
]}

Kiyota, S ^{[1
]}

Yazaki, Y ^{[1
]}

机构：

[1] Natl Inst Agrobiol Resources, Tsukuba, Ibaraki 305, Japan

来源：

PLANT AND CELL PHYSIOLOGY | 1998年 / 39卷 / 06期

关键词：

alternative pathway respiration; biochemical pH-stat; cotransport; P-i transport; organic acid metabolism; respiration;

D O I：

10.1093/oxfordjournals.pcp.a029412

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

We have previously shown that inorganic orthophosphate (P-i) uptake by Catharanthus roseus cells proceeds by a proton/P-i cotransport mechanism [Sakano (1990) Plant Physiol. 93: 479] that acidifies the cytoplasm [Sakano et al. (1992) Plant Physiol. 99: 672]. In the present study, we analyzed changes in the content of endogenous organic acids, carbon dioxide evolution, and oxygen consumption upon P-i application. The results are consistent with the operation of the biochemical ps-stat mechanism [Davies (1986) Physiol. Plant. 67: 702] during and after P-i uptake.

引用

页码：615 / 619

页数：5

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