Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
The chloroplast small heat-shock protein: Evidence for a general role in protecting photosystem II against oxidative stress and photoinhibition
Autore:
Downs, CA; Ryan, SL; Heckathorn, SA;
Indirizzi:
Univ Charleston, Dept Biol, Charleston, SC 29424 USA Univ Charleston Charleston SC USA 29424 pt Biol, Charleston, SC 29424 USA
Titolo Testata:
JOURNAL OF PLANT PHYSIOLOGY
fascicolo: 4-5, volume: 155, anno: 1999,
pagine: 488 - 496
SICI:
0176-1617(199910)155:4-5<488:TCSHPE>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTRON-TRANSPORT CHAIN; HIGH-TEMPERATURE STRESS; ABSCISIC-ACID; HYDROGEN-PEROXIDE; NONTOLERANT VARIANTS; LIPID-PEROXIDATION; OXYGEN RADICALS; MESSENGER-RNA; WATER-STRESS; D1 PROTEIN;
Keywords:
Abscisic acid; Chenopodium album (L.); chloroplast; cold stress; drought; Lycopersicum esculentum (Mill.); oxidative stress; photoinhibition; photosynthesis; Photosystem II; small heat-shock protein; ultraviolet-A radiation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
57
Recensione:
Indirizzi per estratti:
Indirizzo: Downs, CA Univ Charleston, Dept Biol, 58 Coming St, Charleston, SC 29424 USA Univ Charleston 58 Coming St Charleston SC USA 29424 C 29424 USA
Citazione:
C.A. Downs et al., "The chloroplast small heat-shock protein: Evidence for a general role in protecting photosystem II against oxidative stress and photoinhibition", J PLANT PHY, 155(4-5), 1999, pp. 488-496

Abstract

We have recently shown that the chloroplast small heat-shock protein (chlpsHsp) protects oxygen evolution and electron transport of Photosystem II during heat stress, bur it is not known if the chlpsHsp protects Photosystem II during other stresses. Here we show that the chlpsHsp was produced in viva in leaves of Chenopodium album (L.) and Lycopersicum esculentum (Mill.) plants subjected to drought (in high light, but not in low light), ultraviolet-A radiation, exogenous abscisic acid treatment, and oxidative stress (induced by methyl viologen). Cold-shock treatment failed to induce the chlpsHsp in either species. Using an in vitro antibody-inhibition assay specificto the chlpsHsp, we provide evidence that the chlpsHsp can protect Photosystem II electron transport from oxidative stress (induced by H2O2) and under conditions of photoinhibitory high light. These results indicate that thechlpsHsp plays a general role in the protection of Photosystem II against oxidative stress and photoinhibition.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/01/20 alle ore 11:03:08