Comparison of cadmium-induced oxidative stress in Brassica juncea in soil and hydroponic cultures
| Autor: | Miguel P. Mourato, Amarilis de Varennes, Teresa Armas, Ana Paula Pinto, Ana Maria Mota, Maria L. S. Gonçalves, Luisa Louro Martins |
|---|---|
| Přispěvatelé: | Lambers, Hans |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
chemistry.chemical_classification
Reactive oxygen species Antioxidant biology medicine.medical_treatment Lipid peroxidation Soil Science Plant physiology food and beverages Plant Science medicine.disease_cause chemistry.chemical_compound chemistry Catalase Oxidative stress Botany Shoot biology.protein medicine Brassica juncea Antioxidant enzymes Food science Peroxidase |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação instacron:RCAAP |
| Popis: | Aims The objective of this study was to investigate the response of Brassica juncea in the presence of Cd, in hydroponic and soil experiments, and to conclude about common and divergent trends in both cultures. Methods We studied the effect of Cd on growth, oxidative damage and antioxidant responses in roots and shoots of B. juncea grown in soil and hydroponic cultures, using typical time-scales for each one. Major ROS-scavenging enzymes such as catalase, ascorbate peroxidase and guaiacol peroxidase were evaluated, as well as lipid peroxidation. Results Small Cd concentrations in the plant led to enhanced plant growth, while large Cd concentrations impaired growth. The increase in lipid peroxidation observed in the presence of Cd was always greater in shoots than in roots. The physiological response to enhanced levels of reactive oxygen species in the presence of Cd included an increase in guaiacol peroxidase, ascorbate peroxidase and catalase activities, but those enzymes were not always enhanced in a similar manner in both cultures. Conclusions The main factors responsible for the differences between the experiments in soil and nutrient solution, were the different Cd content in the plant tissues and the different time-scale of the experiments. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|