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Titolo:
DEPENDENCE OF CHLOROPHYLL(IDE) SPECTRAL SHIFTS AND PHOTOACTIVE PROTOCHLOROPHYLLIDE REGENERATION AFTER FLASH IN ETIOLATED BARLEY LEAVES
Autore:
EULLAFFROY P; SALVETAT R; FRANCK F; POPOVIC R;
Indirizzi:
UNIV QUEBEC,TOXEN DEPT CHIM,CASE POSTALE 8888,SUCCURSALE A MONTREAL PQ H3C 3P8 CANADA UNIV QUEBEC,TOXEN DEPT CHIM MONTREAL PQ H3C 3P8 CANADA UNIV LIEGE,DEPT BOT B22,PHOTOBIOL LAB B-400 LIEGE BELGIUM
Titolo Testata:
Photochemistry and photobiology
fascicolo: 4, volume: 62, anno: 1995,
pagine: 751 - 756
SICI:
0031-8655(1995)62:4<751:DOCSSA>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
PIGMENT-PROTEIN COMPLEXES; PROLAMELLAR BODIES; TRANSFORMATION; ETIOPLASTS; LIGHT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
27
Recensione:
Indirizzi per estratti:
Citazione:
P. Eullaffroy et al., "DEPENDENCE OF CHLOROPHYLL(IDE) SPECTRAL SHIFTS AND PHOTOACTIVE PROTOCHLOROPHYLLIDE REGENERATION AFTER FLASH IN ETIOLATED BARLEY LEAVES", Photochemistry and photobiology, 62(4), 1995, pp. 751-756

Abstract

Absorbance spectroscopy at 77 K was used to investigate the effect oftemperature on in vivo chlorophyllide shifts and photoactive protochlorophyllide regeneration after a saturating flash, which transformed all protochlorophyllide to chorophyllide. Photoactive protochlorophyllide present in darkness was stable up to 40 degrees C. The rate of Shibata shift and protochlorophyllide regeneration after flash were strongly temperature dependent in the range 0-25 degrees C. At 0 degrees C, the shift was still observed but no regeneration occurred. Only slighteffects were observed in the range 25-40 degrees C. At all temperatures, the process of protochlorophyllide regeneration was significantly slower than the Shibata shift. The final chlorophyll shift from 672 to674 nm was observed up to 40 degrees C. The implication of these results concerning the pigment-protein interactions during the Shibata shift are discussed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 14:47:11