Effectiveness of Amaranthus gangeticus in Arsenic Extraction from Soil

Abstract

Phytoremediation of heavy metal rich soil has become a practical approach nowadays. Though this method is very promising, it requires long time for complete remediation of contaminated soil. Assortment of appropriate plant for specific heavy metal is very important to decontaminate soil within short period of time. The present study was conducted on Amaranthus gangeticus to find out its potential to remove arsenic (As) from soil within short period of time. Phytoremediation trail was followed by growing plants in varying concentrations of As contaminated soil and subsequently one month of plant growing period it removed 72%-81% of the total soil As. This species accomplish maximum accumulation capacity of 17934 mg/Kg in shoots and store 72%-78% metal in aerial parts. Several parameters that have an influence on phytoremediation potential such as time, concentration, bioconcentration factor (BCF) and translocation factor (TF) were also calculated to investigate its appropriateness as effective hyperaccumulator.

Diversity in Grain Amaranths and Relatives Distinguished by Genotyping by Sequencing (GBS)

“…They are one of the few genera among dicotyledonous plants to have developed the more efficient C4 photosynthesis method of CO 2 fixation as compared to C3 photosynthesis typical in most other families ( Sage, 2004 ). Grain amaranths are known to be tolerant of abiotic stresses, including water scarcity ( Brenner et al, 2010 ), saline or poor fertility soils ( Nasir et al, 2016 ; Saucedo et al, 2017 ), intense solar radiation and even severe defoliation ( Castrillón-Arbeláez et al, 2012 ; Vargas-Ortiz et al, 2013 ; Jin et al, 2016 ). They also have few diseases although they do suffer from insect herbivory ( Castrillón-Arbeláez et al, 2012 ; Massange-Sanchez et al, 2015 ).…”