Open AccessCadmium phytoremediation potential of Gnaphalium affine D. Don and physiological response in metal tolerance
Author(s) -
Qiqian Li,
Xuhui Liu,
Qin Yong-rong
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/546/4/042029
Subject(s) - bioconcentration , phytoremediation , cadmium , shoot , chemistry , malondialdehyde , herbaceous plant , point of delivery , horticulture , botany , heavy metals , environmental chemistry , biology , bioaccumulation , oxidative stress , biochemistry , organic chemistry
In this study, the plant growth, physiological responses and phytoremediation potential of the herbaceous plant Gnaphalium affine D. Don were evaluated in varying extents of Cd contaminated soil and 40 days cultivation. The results demonstrated that the plant had a high Cd tolerance of up to 300 mg.kg -1 in which Cd content in roots and shoots reached a maximum of 733.9 and 404.6 mg.kg -1 respectively. Cd exposure enhances the malondialdehyde (MDA) level and antioxidative response (SOD, POD and CAT) in shoots of Gnaphalium affine D. Don. The bioconcentration factor (BCF) values in all treatments were greater than 1 and the translocation factor (TF) values were almost 2 at the high Cd concentration treatments. These findings indicated that Gnaphalium affine D. Don as a Cd-accumulator can be considered as a potential candidate for phytoremediation in Cd polluted sites.