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Titolo:
EFFECTS OF BENZOIC AND CINNAMIC-ACIDS ON MEMBRANE-PERMEABILITY OF SOYBEAN ROOTS
Autore:
BAZIRAMAKENGA R; LEROUX GD; SIMARD RR;
Indirizzi:
AGR & AGRIFOOD CANADA,SOILS & CROPS RES CTR,2560 HOCHELAGA BLVD ST FOY PQ G1V 2J3 CANADA UNIV LAVAL,DEPT PHYTOL ST FOY PQ G1K 7P4 CANADA
Titolo Testata:
Journal of chemical ecology
fascicolo: 9, volume: 21, anno: 1995,
pagine: 1271 - 1285
SICI:
0098-0331(1995)21:9<1271:EOBACO>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
SUPEROXIDE-DISMUTASE; LIPID-PEROXIDATION; HYDROGEN-PEROXIDE; ORGANIC-ACIDS; INVOLVEMENT; RESISTANCE; MECHANISM; CATALASE; GROWTH; SOIL;
Keywords:
ALLELOCHEMICALS; LIPID PEROXIDATION; SULFHYDRYL GROUPS; LEAKAGE; PLASMA MEMBRANE; SUPEROXIDE DISMUTASE; CATALASE; PEROXIDASE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
51
Recensione:
Indirizzi per estratti:
Citazione:
R. Baziramakenga et al., "EFFECTS OF BENZOIC AND CINNAMIC-ACIDS ON MEMBRANE-PERMEABILITY OF SOYBEAN ROOTS", Journal of chemical ecology, 21(9), 1995, pp. 1271-1285

Abstract

Benzoic (BEN) and cinnamic (GIN) acids are commonly found in soils and are considered as strong allelochemicals. Published information suggest that BEN and CIN and other phenolic acids decrease plant growth inpart by suppressing nutrient absorption. However, studies on the mechanism of action were not conclusive. We examined the effects of BEN and CIN on the cell plasma membrane in intact soybean (Glycine max L. cv. Maple Bell) seedlings. Treating intact root systems with BEN or CIN rapidly increased electrolyte leakage and ultraviolet absorption of materials into the surrounding solution. After 12 hr of treatment, BEN and CIN lowered the extracellular sulfhydryl group content in roots. The two allelochemicals induced lipid peroxidation, which resulted from free radical formation in plasma membranes, inhibition of catalase andperoxidase activities, and sulfhydryl group depletion. Oxidation or cross-linking of plasma membrane sulfhydryl groups is the first mode ofaction of both compounds. The BEN- and CIN-induced decrease in soybean nutrient absorption may be a consequence of damage to cell membrane integrity caused by a decrease in sulfhydryl groups followed by lipid peroxidation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 16:39:09