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Role of different transporting systems in the secretion of alkaloids by hairy roots of catharanthus roseus (L) G. Don
VICTOR MANUEL LOYOLA VARGAS
JUAN LUIS MONRIBOT VILLANUEVA
ELIEL RUIZ MAY
ROSA MARIA GALAZ AVALOS
Acceso Abierto
Atribución-NoComercial-SinDerivadas
ABC TRANSPORTERS
ALKALOIDS
CATHARANTHUS ROSEUS
EXU­DATION
INHIBITORS
Knowledge on the biosynthetic pathways of the monoter­pene alkaloids is enormous, but little is known about their mechanism of transporting system from the plant cell. There is not concrete evi­dence confirming the role of ABC transporters in the secretion of monoterpene indole alkaloids (MIAs) in Catharanthus roseus. There­fore, in order to determine the role of different transporting systemsinvolved in the MIAs translocation, we employed a pharmacological approach by using transport inhibitors such as, KCN, Na3VO4, quini­dine and glibenclamide in hairy root cultures of C. roseus. It was found that the accumulation of ATP drastically decreased in the pres­ence of KCN or 100 μM acetylsalicylic acid (ASA)/100 μM KCN. The treatment with the inhibitors KCN and glibenclamide in the pres­ence of ASA significantly increased the ajmalicine secretion com­pared to the control. The secretion of serpentine was undetected during the first 24 h in all the samples. Treatment with the inhibitors quinidine and glibenclamide provoked a significant reduction of ser­pentine secretion in the hairy roots compared to the control. Based on our results, we found evidence that ABC transporters might partici­pate in the secretion of MIAs by C. roseus hairy roots.
01-04-2015
Artículo
Journal of the Mexican Chemical Society. 59(2), 105-118, 2015
Inglés
Monribot-Villanueva, J. L., Ruiz-May, E., Galaz-Ávalos, R. M., Badri, D., & Loyola-Vargas, V. M. (2015). Role of different transporting systems in the secretion of alkaloids by hairy roots of catharanthus roseus (L) G. Don. Journal of the Mexican Chemical Society, 59(2), 105-118.
BIOLOGÍA Y QUÍMICA
Versión publicada
publishedVersion - Versión publicada
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