Lead induced changes in the growth and antioxidant metabolism of the lead accumulating and non-accumulating ecotypes of Sedum alfredii

Journal of Integrative Plant Biology
Dan LiuQaisar Mahmood

Abstract

The phytotoxicity and antioxidative adaptations of lead (Pb) accumulating ecotype (AE) and non-accumulating ecotype (NAE) of Sedum alfredii Hance were investigated under different Pb treatments involving 0, 0.02 mmol/L Pb, 0.1 mmol/L Pb and 0.1 mmol/L Pb/0.1 mmol/L ethylenediaminetetraacetic acid (EDTA) for 6 days. With the increasing Pb level, the Pb concentration in the shoots of AE plants enhanced accordingly, and EDTA supply helped 51% of Pb translocation to shoots of AE compared with those treated with 0.1 mmol/L Pb alone. Moreover, the presence of EDTA alleviated Pb phytotoxicity through changes in plant biomass, root morphology and chlorophyll contents. Lead toxicity induced hydrogen peroxide (H2O2) accumulation and lipid peroxidation in both ecotypes of S. alfredii. The activities of superoxide dismutase (SOD), guaiacol peroxidase (G-POD), ascorbate peroxidase, and dehydroascorbate reductase elevated in both leaves and roots of AE as well as in leaves of NAE with the increasing Pb levels, but SOD and G-POD declined in roots of NAE. Enhancement in glutathione reductase activity was only detected in roots of NAE while a depression in catalase activity was recorded in the leaves of NAE. A significant enhancement in glutath...Continue Reading

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Citations

Dec 8, 2011·Environmental Science and Pollution Research International·Huagang HuangTingxuan Li
Sep 10, 2014·Ecotoxicology and Environmental Safety·Karolina IzbiańskaJoanna Deckert
Oct 4, 2015·Environmental Science and Pollution Research International·Umair AshrafXiangru Tang
Mar 22, 2014·Journal of Integrative Plant Biology·Mohammed NuruzzamanZhi-Yong Luo
Sep 23, 2014·Plant Physiology and Biochemistry : PPB·Antonio López-OrenesMaría A Ferrer
Jan 25, 2014·BioMed Research International·Maria SabeenSobia Tabassum
Sep 5, 2014·Environmental Science and Pollution Research International·Salwa Harzalli JebaraMoez Jebara
Dec 11, 2014·Biometals : an International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine·Wasilewska WioletaRomanowska Elżbieta
Oct 13, 2019·Environmental Science and Pollution Research International·Eleazar RodriguezConceição Santos
May 8, 2018·Environmental Science and Pollution Research International·Barbara PiwowarczykEwa Hanus-Fajerska
Mar 31, 2020·Environmental Science and Pollution Research International·Xiaoyi ZengXingjun Tian
Sep 24, 2019·Journal of Environmental Management·Usman ZulfiqarMuhammad Zohaib Anjum
Dec 23, 2019·The Science of the Total Environment·Samar R SalehMohamed M Abdel-Daim
Dec 15, 2020·Journal of Environmental Health Science & Engineering·Fatemeh MasoudiMohammad R Sabzalian
Jul 28, 2020·Biochemistry and Biophysics Reports·Hanwant SinghVineet Soni
May 23, 2021·Scientific Reports·Sangita BaruahKali Prasad Sarma

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