Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
OPTICAL MULTICHANNEL ANALYSIS OF PROTOCHLOROPHYLLIDE PHOTOTRANSFORMATION IN DETERGENT-SOLUBILIZED ETIOPLAST MEMBRANES OF WHEAT
Autore:
FRANCK F; OUAZZANI MA; DUJARDIN E; POPOVIC R;
Indirizzi:
UNIV LIEGE,DEPT BOT B22,PHOTOBIOL LAB B-4000 LIEGE BELGIUM UNIV QUEBEC,DEPT CHEM MONTREAL H3C 3P8 PQ CANADA
Titolo Testata:
Zeitschrift fur Naturforschung. C, A journal of biosciences
fascicolo: 1-2, volume: 49, anno: 1994,
pagine: 125 - 131
SICI:
0939-5075(1994)49:1-2<125:OMAOPP>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
PIGMENT-PROTEIN COMPLEXES; IDENTIFICATION; LEAVES;
Keywords:
ETIOPLAST; PROTOCHLOROPHYLLIDE; CHLOROPHYLLIDE; NADPH;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
26
Recensione:
Indirizzi per estratti:
Citazione:
F. Franck et al., "OPTICAL MULTICHANNEL ANALYSIS OF PROTOCHLOROPHYLLIDE PHOTOTRANSFORMATION IN DETERGENT-SOLUBILIZED ETIOPLAST MEMBRANES OF WHEAT", Zeitschrift fur Naturforschung. C, A journal of biosciences, 49(1-2), 1994, pp. 125-131

Abstract

Extracts of wheat etioplast membranes obtained after treatment with 7mM n-octyl-beta-D-glucopyranoside (OG), n-dodecyl-beta-D-maltoside (DM) or Triton X-100 contained the three spectral forms of Pchlide (the photoactive Pchlide(638) and Pchlide(638) and the inactive Pchlide(650)) in various relative amounds. The OG extract had a Pchlide composition close to that of the intact membranes whereas the DM extract was enriched in Pchlide(638) and the Triton extract was enriched in Pchlide(630). Measurements of the kinetics of phototransformation and of time-resolved absorbance spectra during phototransformation in continuous Light shows that the inactive Pchlide(630) is in fact slowly transformed to Chlide, especially in the Triton extract where this form is more abundant. Addition of NADPH favours the phototransformation of Pchlide(630) and the slow regeneration of Pchlide(638) and Pchlide(650) from Pchlide(630) in darkness after illumination. No such regeneration was however observed in the Triton extract. NADPH had only slight effects on the Chlide shift towards shorter wavelengths after phototransformation in solubilized membranes.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 15:13:42