Effects of hydroxamic acids on electron transport and their cellular location in corn

dc.creatorMassardo, Francisca
dc.creatorZúñiga, Gustavo E.
dc.creatorPtrez, Luz M.
dc.creatorCorcuerat, Luis J.
dc.date.accessioned2018-12-20T14:34:24Z
dc.date.available2018-12-20T14:34:24Z
dc.date.created2018-12-20T14:34:24Z
dc.date.issued1994
dc.identifierPhytochemistry, Volumen 35, Issue 4, 2018, Pages 873-876
dc.identifier00319422
dc.identifier10.1016/S0031-9422(00)90629-0
dc.identifierhttps://repositorio.uchile.cl/handle/2250/156528
dc.description.abstractDIMBOA, the main hydroxamic acid in maize and wheat, is found mainly as a glucoside in intact maize plants; when the tissue is damaged a β-glucosidase releases DIMBOA from DIMBOA-glucoside. The effects of DIMBOA and its glucoside were studied in maize mitochondria and chloroplasts. DIMBOA reduced electron transport in both mitochondria and chloroplasts with an ID50 of 1.8 and 1.2 mM, respectively. DIMBOA-glucoside had no inhibitory effect. The glucoside and the enzyme were both present in mesophyll parenchyma protoplasts. When these protoplasts were fractionated, DIMBOA-glucoside was found in the extravacuolar fraction, while the DIMBOA-β-glucosidase was in the vacuole. This seems to be an efficient mechanism to prevent aglycone toxicity in vivo. © 1994.
dc.languageen
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile
dc.sourcePhytochemistry
dc.subjectautotoxicity
dc.subjectcompartmentation.
dc.subjectDIMBOA
dc.subjectelectron transport
dc.subjectGramineae
dc.subjecthydroxamic acids
dc.subjectmaize
dc.subjectZea mays
dc.titleEffects of hydroxamic acids on electron transport and their cellular location in corn
dc.typeArtículo de revista


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