Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Regulation of proline accumulation in detached rice leaves exposed to excess copper
Autore:
Chen, CT; Chen, LM; Lin, CC; Kao, CH;
Indirizzi:
Natl Taiwan Univ, Dept Agron, Taipei, Taiwan Natl Taiwan Univ Taipei Taiwan Taiwan Univ, Dept Agron, Taipei, Taiwan
Titolo Testata:
PLANT SCIENCE
fascicolo: 2, volume: 160, anno: 2001,
pagine: 283 - 290
SICI:
0168-9452(20010105)160:2<283:ROPAID>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
DELTA-AMINOTRANSFERASE CDNA; WATER-STRESS; ARABIDOPSIS-THALIANA; BEAN-PLANTS; SALT STRESS; CADMIUM; ZINC; ACID; DEHYDROGENASE; ENHANCEMENT;
Keywords:
abscisic acid; copper; Oryza sativa; proline accumulation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
42
Recensione:
Indirizzi per estratti:
Indirizzo: Kao, CH Natl Taiwan Univ, Dept Agron, Taipei, Taiwan Natl Taiwan Univ Taipei Taiwan Univ, Dept Agron, Taipei, Taiwan
Citazione:
C.T. Chen et al., "Regulation of proline accumulation in detached rice leaves exposed to excess copper", PLANT SCI, 160(2), 2001, pp. 283-290

Abstract

Accumulation of proline in response to excess Cu was studied in detached leaves of rice (Oryza sativa). CuSO4 was effective in inducing proline accumulation in detached rice leaves under both light and dark conditions. CuSO4and CuCl2 were equally effective in inducing proline accumulation, indicating that proline accumulation is induced by Cu. Sulfate sails of Mg, Mn, and Fe were ineffective in inducing proline accumulation in detached rice leaves. Excess Cu had no effect on relative water content of detached rice leaves, suggesting that Cu-induced proline accumulation is unlikely due to water deficit. Proline accumulation induced by excess Cu was related to proteolysis and an increase in Delta (1)-pyrroline-5-carboxylate reductase or ornithine-delta -amino-transferase activity and could not be explained by proline utilization or stress-induced modifications in proline dehydrogenase orDelta (1)-pyrroline-5-carboxylate dehydrogenase. The content of glutamic acid decreased by excess Cu. The increase in arginine but not ornithine was found to be associated with the increase in proline content in Cu-stressed detached rice leaves. CuSO4 treatment resulted in an increase in abscisic acid content in detached rice leaves. The possibility that proline accumulation induced by excess Cu is mediated through abscisic acid is discussed. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/07/20 alle ore 20:12:59