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Titolo:
EFFECTS OF ETHYLENEDIUREA AND OZONE ON THE ANTIOXIDATIVE SYSTEMS IN BEANS (PHASEOLUS-VULGARIS L)
Autore:
BRUNSCHONHARTI S; FANGMEIER A; JAGER HJ;
Indirizzi:
UNIV GIESSEN,INST PLANT ECOL,HEINRICH BUFF RING 38 D-35392 GIESSEN GERMANY
Titolo Testata:
Environmental pollution
fascicolo: 1, volume: 90, anno: 1995,
pagine: 95 - 103
SICI:
0269-7491(1995)90:1<95:EOEAOO>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
FIELD-GROWN CROPS; PINUS-TAEDA L; SUPEROXIDE-DISMUTASE; HYDROGEN-PEROXIDE; AMBIENT OZONE; ASCORBATE PEROXIDASE; LIPID-PEROXIDATION; AIR-POLLUTANTS; FOREST TREES; DIUREA EDU;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
55
Recensione:
Indirizzi per estratti:
Citazione:
S. Brunschonharti et al., "EFFECTS OF ETHYLENEDIUREA AND OZONE ON THE ANTIOXIDATIVE SYSTEMS IN BEANS (PHASEOLUS-VULGARIS L)", Environmental pollution, 90(1), 1995, pp. 95-103

Abstract

To study the biochemical mechanism of EDU protection against ozone injury, peroxidase, ascorbate-dependent peroxidase, and catalase activities, and the contents of ascorbic acid, dehydroascorbic acid, malondialdehyde and soluble protein were measured in Phaseolus vulgaris L. cv. LIt exposed to ozone and ethylenediurea (EDU) in open top chambers. Plants not treated with EDU showed foliar bronzing due to ozone, while EDU-treated plants were not affected. EDU application modified the reaction of biochemical parameters to ozone. Soluble protein content was elevated by EDU. Peroxidase activity increased with ozone exposure in untreated plants only, while ascorbate-dependent peroxidase activity was lower in EDU treated plants. Catalase activity decreased in EDU-untreated plants. The ratio of ascorbic acid to dehydroascorbic acid was significantly increased in EDU treated plants. These results suggest that EDU might induce ascorbic acid synthesis and therefore provide theplant with a very potent antioxidant. Or the content of hydrogen peroxide was reduced due to oother unknown processes and caused a delay infoliar senescence, regardless of wheether these processes were ozone-induced or due to natural ging processes.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/07/20 alle ore 22:00:41