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Titolo:
THE CYANOBACTERIUM SYNECHOCOCCUS MODULATES PHOTOSYSTEM-II FUNCTION INRESPONSE TO EXCITATION STRESS THROUGH D1 EXCHANGE
Autore:
OQUIST G; CAMPBELL D; CLARKE AK; GUSTAFSSON P;
Indirizzi:
UMEA UNIV,DEPT PLANT PHYSIOL S-90187 UMEA SWEDEN
Titolo Testata:
Photosynthesis research
fascicolo: 1-2, volume: 46, anno: 1995,
pagine: 151 - 158
SICI:
0166-8595(1995)46:1-2<151:TCSMPF>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
THYLAKOID MEMBRANE-PROTEIN; SP STRAIN PCC-7942; ANACYSTIS-NIDULANS; PSBA GENE; NUCLEOTIDE-SEQUENCE; DISTINCT FORMS; PHOTOINHIBITION; PHOTOSYNTHESIS; LIGHT; CHLOROPHYLL;
Keywords:
HARVESTING; PHOTOINHIBITION; PSBA GENES; REACTION CENTER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
55
Recensione:
Indirizzi per estratti:
Citazione:
G. Oquist et al., "THE CYANOBACTERIUM SYNECHOCOCCUS MODULATES PHOTOSYSTEM-II FUNCTION INRESPONSE TO EXCITATION STRESS THROUGH D1 EXCHANGE", Photosynthesis research, 46(1-2), 1995, pp. 151-158

Abstract

In this minireview we discuss effects of excitation stress on the molecular organization and function of PS II as induced by high light or low temperature in the cyanobacterium Synechococcus sp. PCC 7942. Synechococcus displays PS II plasticity by transiently replacing the constitutive D1 form (D1:1) with another form (D1:2) upon exposure to excitation stress. The cells thereby counteract photoinhibition by increasing D1 turn over and modulating PS II function. A comparison between the cyanobacterium Synechococcus and plants shows that in cyanobacteria,with their large phycobilisomes, resistance to photoinhibition is mainly through the dynamic properties ( D1 turnover and quenching) of thereaction centre. In contrast, plants use antenna quenching in the light-harvesting complex as an important means to protect the reaction center from excessive excitation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/11/20 alle ore 12:40:11