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Cadmium uptake and membrane transport in roots of hyperaccumulator Amaranthus hypochondriacus L.
Han, Mengxuan; Ullah, Habib; Yang, Huan; Yu, Guo; You, Shaohong; Liu, Jie; Chen, Baoliang; Shahab, Asfandyar; Antoniadis, Vasileios; Shaheen, Sabry M; Rinklebe, Jörg.
Afiliación
  • Han M; College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China. Electronic address: 244633656@qq.com.
  • Ullah H; Innovation Center of Yangtze River Delta, Zhejiang University, Hangzhou, Zhejiang, China. Electronic address: habib901@zju.edu.cn.
  • Yang H; College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China. Electronic address: 945183472@qq.com.
  • Yu G; College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China. Electronic address: yuguo@glut.edu.cn.
  • You S; College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China. Electronic address: youshaohong@glut.edu.cn.
  • Liu J; College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China. Electronic address: liujie@glut.edu.cn.
  • Chen B; Innovation Center of Yangtze River Delta, Zhejiang University, Hangzhou, Zhejiang, China.
  • Shahab A; College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China. Electronic address: 2017022@glut.edu.cn.
  • Antoniadis V; Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Greece. Electronic address: antoniadis@uth.gr.
  • Shaheen SM; University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste Management, Laboratory of Soil- and Groundwater-Management, Pauluskirchstraße 7, Wuppertal, Germany; King Abdulaziz University, Faculty of Meteorology, Environment, and Arid L
  • Rinklebe J; University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste Management, Laboratory of Soil- and Groundwater-Management, Pauluskirchstraße 7, Wuppertal, Germany. Electronic address: rinklebe@uni-wuppertal.de.
Environ Pollut ; 331(Pt 1): 121846, 2023 Aug 15.
Article en En | MEDLINE | ID: mdl-37211225
Hyperaccumulator Amaranthus hypochondriacus L. has huge potential in the remediation of cadmium (Cd)-contaminated soils and is necessary to understand the mechanism of Cd uptake by the roots. In this study, the mechanism of Cd uptake into the root of A. hypochondriacus was investigated using the non-invasive micro-test technology (NMT) by analyzing the rate of Cd2+ fluxes at different regions of the root tip; also we assessed the impact of different channel blockers and inhibitors on the Cd accumulation in the roots, the real-time Cd2+ fluxes, and the distribution of Cd along the roots. The results showed that the Cd2+ influx was greater near the root tip (within 100 µm of the tip). All the inhibitors, ion-channel blockers, and metal cations had different degrees of inhibition on the absorption of Cd in the roots of A. hypochondriacus. The net Cd2+ flux in the roots was significantly decreased by the Ca2+ channel blockers lanthanum chloride (LaCl3) by up to 96% and verapamil by up to 93%; as for the K+ channel blocker tetraethylammonium (TEA), it also caused a 68%-reduction on the net Cd2+ flux in the roots. Therefore, we infer that the uptake by A. hypochondriacus roots is mainly through the Ca2+ channels. The Cd absorption mechanism appears to be related to the synthesis of plasma membrane P-type ATPase and phytochelatin (PC), which is reflected by the inhibition of Ca2+ upon addition of inorganic metal cations. In conclusion, access of Cd ions into the roots of A. hypochondriacus is achieved through various ion channels, with the most important being the Ca2+ channel. This study will further enhance the literature regarding Cd uptake and pathways of membrane transport in roots of Cd hyperaccumulators.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes del Suelo / Amaranthus Idioma: En Revista: Environ Pollut Asunto de la revista: SAUDE AMBIENTAL Año: 2023 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes del Suelo / Amaranthus Idioma: En Revista: Environ Pollut Asunto de la revista: SAUDE AMBIENTAL Año: 2023 Tipo del documento: Article Pais de publicación: Reino Unido