Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
RESPIRATORY ACTIVITIES, CYTOCHROME COMPOSITION AND CYTOCHROME-C-OXIDASE SUBUNIT-II LEVELS OF MITOCHONDRIA FROM ALLOPLASMIC WHEATS HAVING AEGILOPS CYTOPLASMS
Autore:
IKEDA TM; SHIBASAKA M; TSUNEWAKI K;
Indirizzi:
DALHOUSIE UNIV,DEPT BIOCHEM HALIFAX B3H 4H7 NS CANADA KYOTO UNIV,FAC AGR,GENET LAB KYOTO 60601 JAPAN OKAYAMA UNIV,BIORESOURCES RES INST KURASHIKI OKAYAMA 710 JAPAN
Titolo Testata:
Plant and Cell Physiology
fascicolo: 5, volume: 35, anno: 1994,
pagine: 779 - 784
SICI:
0032-0781(1994)35:5<779:RACCAC>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
GENETIC DIVERSITY; MOLECULAR-BASIS; NUCLEOTIDE-SEQUENCES; CHLOROPLAST GENOMES; MALE-STERILITY; MALE-FERTILE; TRITICUM; PROTEINS; TRANSPORT; CELLS;
Keywords:
ALLOPLASMIC WHEAT; CYTOCHROME OXIDASE (EC 1.9.3.1); MITOCHONDRIA; RESPIRATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
33
Recensione:
Indirizzi per estratti:
Citazione:
T.M. Ikeda et al., "RESPIRATORY ACTIVITIES, CYTOCHROME COMPOSITION AND CYTOCHROME-C-OXIDASE SUBUNIT-II LEVELS OF MITOCHONDRIA FROM ALLOPLASMIC WHEATS HAVING AEGILOPS CYTOPLASMS", Plant and Cell Physiology, 35(5), 1994, pp. 779-784

Abstract

Respiratory activities, cytochrome composition and cytochrome c oxidase (EC 1.9.3.1) subunit II (COXII) levels of isolated mitochondria in one euplasmic and four alloplasmic lines of wheat (Triticum aestivum),having cytoplasms of Aegilops columnaris, Ae. crassa (4x), Ae. muticaand Ae. triuncialis, which show various growth abnormalities, were studied. Cytoplasm-specific variation on the respiratory activities has been revealed among the cytoplasms of five Trilicum and Aegilops species. The cyanide-resistant respiratory pathway does not seem to contribute to the variation in activity. The low level of state 3 and cytochrome oxidase activities were evident in lines having Ae. columnaris andAe. triuncialis cytoplasms, which also show growth inhibition. The low cytochrome oxidase activity in both cytoplasms is consistent with the low amount of cytochrome aa(3) and the severe reduction in COXII levels. The relatively low amount of cytochrome aa(3) in Ae. mutica is also consistent with the reduced level of the COXII. On the other hand, relatively low amounts of cytochrome b (b-557) are found in the Ae. crassa cytoplasmic line. These results suggest that the growth abnormalities found in the alloplasmic wheat lines are related to the variationin respiratory activities and cytochrome composition. In particular, growth inhibition found in the alloplasmic wheats having Ae. columnaris and Ae. triuncialis may be caused by the severe depression of respiratory activity due to the impaired cytochrome oxidase activity of their mitochondria.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/12/20 alle ore 15:50:07