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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Temporal dynamic responses of roots in contrasting tomato genotypes to cadmium tolerance

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Author(s):
Reis Borges, Karina Lima [1] ; Salvato, Fernanda [1, 2] ; Alcantara, Berenice Kussumoto [3] ; Nalin, Rafael Storto [4] ; Piotto, Fernando Angelo [1] ; Azevedo, Ricardo Antunes [1]
Total Authors: 6
Affiliation:
[1] Luiz de Queiroz Coll Agr, Dept Genet, Lab Plant Genet & Biochem, Piracicaba, SP - Brazil
[2] Univ Estadual Campinas, Inst Biol, Lab Mol Physiol Plants, Campinas, SP - Brazil
[3] Univ Fed Acre, Rio Branco, AC - Brazil
[4] Luiz de Queiroz Coll Agr, Dept Genet, Lab Stat Genet, Piracicaba, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: ECOTOXICOLOGY; v. 27, n. 3, p. 245-258, APR 2018.
Web of Science Citations: 19
Abstract

Despite numerous studies on cadmium (Cd) uptake and accumulation in crops, relatively little is available considering the temporal dynamic of Cd uptake and responses to stress focused on the root system. Here we highlighted the responses to Cd-induced stress in roots of two tomato genotypes contrasting in Cd-tolerance: the tolerant Pusa Ruby and the sensitive Calabash Rouge. Tomato genotypes growing in the presence of 35 mu M CdCl2 exhibited a similar trend of Cd accumulation in tissues, mainly in the root system and overall plants exhibited reduction in the dry matter weight. Both genotypes showed similar trends for malondialdehyde and hydrogen peroxide accumulation with increases when exposed to Cd, being this response more pronounced in the sensitive genotype. When the antioxidant machinery is concerned, in the presence of Cd the reduced glutathione content was decreased in roots while ascorbate peroxidase (APX), glutathione reductase (GR) and glutathione S-transferase (GST) activities were increased in the presence of Cd in the tolerant genotype. Altogether these results suggest APX, GR and GST as the main players of the antioxidant machinery against Cd-induced oxidative stress. (AU)

FAPESP's process: 09/54676-0 - Oxidative stress induced by metals: new approaches
Grantee:Ricardo Antunes de Azevedo
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 16/14349-3 - Cadmium transport and accumulation of different tomato genotypes: physiological, proteomic and molecular approaches.
Grantee:Ricardo Antunes de Azevedo
Support Opportunities: Regular Research Grants