Journal
ECOTOXICOLOGY
Volume 29, Issue 5, Pages 594-606Publisher
SPRINGER
DOI: 10.1007/s10646-020-02208-1
Keywords
Abiotic stress; Antioxidant metabolism; Selenium; Solanum lycopersicum
Categories
Funding
- Fundacao de Amparo a Pesquisa do Estadode Sao Paulo (FAPESP) [2017/04787-6]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)- Brazil [314380/2018-3]
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) [001]
Ask authors/readers for more resources
Cadmium (Cd) is probably the most damaging metal to plant species; with a long biological half-life, it can be taken up by plants, disrupting the cell homeostasis and triggering several metabolic pathways. Selenium (Se) improves plant defence systems against stressful conditions, but the biochemical antioxidant responses to Cd stress in tomato plants is poorly understood. To further address the relationship of Cd-stress responses with Se mineral uptake, Cd and Se concentration, proline content, MDA and H2O2 production, and the activity of SOD, APX, CAT and GR enzymes were analyzed in Micro-Tom (MT) plants submitted to 0.5 mM Cd. The results revealed different responses according to Se combination and Cd application. For instance, roots and leaves of MT plants treated with Se exhibited an increase in dry mass and nutritional status, exhibited lower proline content and higher APX and GR activities when compared with plants with no Se application. Plants submitted to 0.5 mM Cd, irrespective of Se exposure, exhibited lower proline, MDA and H2O2 content and higher SOD, CAT and GR activities. Selenium may improve tolerance against Cd, which allowed MT plants exhibited less oxidative damage to the cell, even under elevated Cd accumulation in their tissues. The results suggest that Se application is an efficient management technique to alleviate the deleterious effects of Cd-stress, enhancing the nutritional value and activity of ROS-scavenging enzymes in tomato plants.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available