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Titolo:
Physiological control of phosphate uptake and phosphate homeostasis in plant cells
Autore:
Mimura, T;
Indirizzi:
Nara Womens Univ, Fac Sci, Dept Biol Sci, Nara 6308506, Japan Nara Womens Univ Nara Japan 6308506 , Dept Biol Sci, Nara 6308506, Japan
Titolo Testata:
AUSTRALIAN JOURNAL OF PLANT PHYSIOLOGY
fascicolo: 7, volume: 28, anno: 2001,
pagine: 653 - 658
SICI:
0310-7841(2001)28:7<653:PCOPUA>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
SUSPENSION-CULTURED CELLS; CATHARANTHUS-ROSEUS CELLS; INORGANIC-PHOSPHATE; ARABIDOPSIS-THALIANA; PLASMA-MEMBRANE; MAGNETIC-RESONANCE; CHARA-CORALLINA; CYTOPLASMIC PH; H+-PUMPS; TRANSPORT;
Keywords:
cytoplasmic pH; H+ pump; inorganic phosphate; Pi uptake; plasma membrane;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
40
Recensione:
Indirizzi per estratti:
Indirizzo: Mimura, T Nara Womens Univ, Fac Sci, Dept Biol Sci, Nara 6308506, Japan Nara Womens Univ Nara Japan 6308506 l Sci, Nara 6308506, Japan
Citazione:
T. Mimura, "Physiological control of phosphate uptake and phosphate homeostasis in plant cells", AUST J PLAN, 28(7), 2001, pp. 653-658

Abstract

Inorganic phosphate (Pi) uptake systems across the plasma membrane of plant cells have been extensively investigated. Physiological studies have established that Pi is transported into plant cells via co-transport with H+, and in some plants with Na+, using the driving force provided by the electrogenic H+ pump in the plasma membrane. Molecular studies have identified many genes for Pi transporters and are providing insights into the mechanisms of genetic control of Pi transport. There still remain, however, questions as to how Pi uptake systems are regulated at the physiological level. We have found that Pi uptake induces cytoplasmic acidification, and, conversely,that inducing cytoplasmic acidification causes the cytoplasmic Pi concentration to decrease. Both of these responses affect the operation of the H+-pump. These phenomena are discussed in relation to a possible mechanism for the physiological control of Pi uptake by plant cells.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 19:41:58