Work

Cadmium effects on mineral accumulation, antioxidant defence system and gas exchange in cucumber

Year: 2015

Type: article

Abstract: The effects of different concentrations (10, 50, 100 and 500 μM) of cadmium (Cd) on manganese (Mn) and iron (Fe), lipid peroxidation, activities of antioxidant enzymes and photosynthetic function were investigated in hydroponically grown cucumber (Cucumis sativus L.).Results indicated that cadmium was accumulated primarily in roots.In the roots and shoots, the cadmium content increased with the increasing cadmium concentrations, and induced decrease of manganese significantly (P < 0.005).The levels of iron had an increasing trend with increasing cadmium concentration and duration of treatment.Cadmium-induced oxidation stress and lipid peroxidation in C. sativus showed by the increased concentration of MDA (malondialdehyde).Cadmium induced higher SOD (superoxide dismutase) and POD (peroxidase) activities than CAT (catalase) activity, suggesting that SOD and POD provided a better defence mechanism against cadmium-induced oxidative damage in C. sativus.The net photosynthetic rate, transpiration rate, stomatal conductance and intercellular CO 2 concentration were reduced in the presence of cadmium.

Source: Zemdirbyste-Agriculture

DOI: 10.13080/z-a.2015.102.025

Authors: Sheng Sun, Mei Li, Jinhua Zuo, Wusheng Jiang, Donghua Liu

Institution: Tianjin Normal University

Language: English

Topic: Plant Stress Responses and Tolerance

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: diamond

Funder: National Natural Science Foundation of China