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Titolo:
Hyperpolarisation-activated calcium currents found only in cells from the elongation zone of Arabidopsis thaliana roots
Autore:
Kiegle, E; Gilliham, M; Haseloff, J; Tester, M;
Indirizzi:
Univ Cambridge, Dept Plant Sci, Cambridge CB2 3EA, England Univ CambridgeCambridge England CB2 3EA Sci, Cambridge CB2 3EA, England
Titolo Testata:
PLANT JOURNAL
fascicolo: 2, volume: 21, anno: 2000,
pagine: 225 - 229
SICI:
0960-7412(200001)21:2<225:HCCFOI>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
GREEN FLUORESCENT PROTEIN; PLASMA-MEMBRANE; PERMEABLE CHANNELS; CARROT CELLS; PLANT-CELL; MICROTUBULES; PROTOPLASTS; ELICITORS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Tester, M Univ Cambridge, Dept Plant Sci, Downing St, Cambridge CB2 3EA, England Univ Cambridge Downing St Cambridge England CB2 3EA EA, England
Citazione:
E. Kiegle et al., "Hyperpolarisation-activated calcium currents found only in cells from the elongation zone of Arabidopsis thaliana roots", PLANT J, 21(2), 2000, pp. 225-229

Abstract

Calcium currents across the plasma membrane of plant cells allow transduction of environmental signals as well as nutritive calcium uptake. Using transgenic Arabidopsis plants with cell-specific expression of green fluorescent protein (GFP), we analyzed whole cell calcium currents in epidermal cells of the rapidly growing root apex, mature epidermal cells, cortical and epidermal cells from the elongation zone, and mature pericycle cells. In cells only from the rapidly growing root apex, a hyperpolarisation-activated calcium current was identified. This current was irreversibly inhibited by 10mu m Al3+, as well as being inhibited by 1 mm Co2+ and 100 mu m verapamil. In no cells could a depolarisation-activated current be attributed to calcium influx. In the growing root apex, the hyperpolarisation-activated calcium current may function to allow constitutive uptake of calcium for rapid cell division and elongation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/11/20 alle ore 20:01:57