Por favor, use este identificador para citar o enlazar este ítem:
http://cicy.repositorioinstitucional.mx/jspui/handle/1003/759| Effects of ammonium nitrate, cesium chloride and tetraethylammonium on high-affinity potassium uptake in habanero pepper plantlets (Capsicum chinense Jacq.) | |
| JOSE RAMON PACHECO ARJONA NANCY RUIZ LAU MARIA DE FATIMA MEDINA LARA YERENI MINERO GARCÍA ILEANA DE LA CARIDAD ECHEVARRIA MACHADO CESAR DE LOS SANTOS BRIONES MANUEL MARTINEZ ESTEVEZ | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| AMMONIUM CHANNEL BLOCKERS HIGH AFFINITY TRANSPORTERS POTASSIUM | |
| Potassium (K +) is an essential nutrient and the most abundant cation in plant cells. Plants have a wide variety of transport systems for K + acquisition that catalyze K + uptake across a wide spectrum ofexternal K + concentrations and mediate K + movement within the plant, as well as its release into the environment. The KUP/HAK/KT transporter family plays a key role in K + homeostasis in plant cells. The present study demonstrates that habanero pepper plantlets have a clear pattern of K + uptake when resupplemented with K + after K + starvation. Habanero pepper plantlets, re-supplemented with a solution containing low concentrations of K + after 72, 96 or 120 h of K + starvation were able to decrease the amount of K + in the solution at different time points. To study the effect of NH 4 +, we added different concentrations of NH4NO3 to the medium solution and demonstrated that NH 4 + inhibited K + uptake in a dose-dependent manner. When the plantlets were subjected to K +starvation for 72 h and then resupplemented with 50 or 100 μM K +, exposure to K + channel blockers (10 mM CsCl and 20 mM TEA) decreased their K + uptake compared with the control treatment. A model demonstrating the process of K + uptake through an NH 4 +-insensitive component was proposed. | |
| 2011 | |
| Artículo | |
| African Journal of Biotechnology, 10(62), 13418-13429, 2011 | |
| Inglés | |
| Pacheco-Arjona, J. R., Ruiz-Lau, N., Medina-Lara, F., Minero-García, Y., Echevarría-Machado, I., de los Santos-Briones, C., & Martínez-Estévez, M. (2011). Effects of ammonium nitrate, cesium chloride and tetraethylammonium on high-affinity potassium uptake in habanero pepper plantlets (capsicum chinense jacq.).African Journal of Biotechnology, 10(62), 13418-13429. | |
| BIOLOGÍA Y QUÍMICA | |
| Versión publicada | |
| publishedVersion - Versión publicada | |
| Aparece en las colecciones: | Artículos de Investigación Arbitrados |
Cargar archivos:
| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| 2011_AI_id19368_MartinezEstevez.pdf | 611.32 kB | Adobe PDF | Visualizar/Abrir |