Stimulation of H+-transport activity of vacuolar H+-ATPase by activation of H+-PPase in Kalanchoe blossfeldiana

In Kalanchoee blossfeldiana cv. Tom Thumb the initial rate of ATP-dependent H+-transport into tonoplast vesicles was stimulated up to three times if the H+-ATPase (EC 3.6.1.3) was energized a few minutes after pre-energization of the H+-PPase (EC 3.6.1.1.). H+-PPase-activated ATP-dependent H+-transp...

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Veröffentlicht in:	Biologia plantarum 1997-01, Vol.39 (2), p.169-177
Hauptverfasser:	Fischer-Schliebs, E, Luettge, U. (Technische Hochschule, Darmstadt (Germany). Inst. fuer Botanik), Mariaux, J.-B
Format:	Artikel
Sprache:	eng
Schlagworte:	ACTIVIDAD ENZIMATICA ACTIVITE ENZYMATIQUE Adenosine triphosphatase ATP ATPASA ATPASE CICLO CAM CONTENIDO PROTEICO Crassulacean acid metabolism FEUILLE FOTOPERIODISMO H+-transporting ATPase HIDROGENO HIDROLISIS HOJAS Hydrogen HYDROGENE HYDROLYSE Immunoprecipitation Inorganic pyrophosphatase KALANCHOE BLOSSFELDIANA Localization MALATE MALATOS Membranes PHOTOPERIODICITE PIROFOSFATOS Protein transport Proteins PYROPHOSPHATE REACCION DE INMUNOPRECIPITACION REACTION D'IMMUNOPRECIPITATION TENEUR EN PROTEINES TRANSPORT DES SUBSTANCES NUTRITIVES TRANSPORTE DE NUTRIENTES Vesicles VOIE DU METABOLISME CAM
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Zusammenfassung:	In Kalanchoee blossfeldiana cv. Tom Thumb the initial rate of ATP-dependent H+-transport into tonoplast vesicles was stimulated up to three times if the H+-ATPase (EC 3.6.1.3) was energized a few minutes after pre-energization of the H+-PPase (EC 3.6.1.1.). H+-PPase-activated ATP-dependent H+-transport was observed in plants of K. blossfeldiana cultivated in short day (SD) or long day (LD) conditions expressing different degrees of crassulacean acid metabolism (CAM). The maximum H+-transport activity in the stimulated mode of the H+-ATPasa was significantly higher in tonoplast vesicles of SD plants than of LD plants.
ISSN:	0006-3134 1573-8264
DOI:	10.1023/A:1000372315936