Nutritional status and root morphology of tomato under Cd-induced stress: Comparing contrasting genotypes for metal-tolerance

Borges, Karina Lima Reis; Hippler, Franz Walter Rieger; Carvalho, Marcia Eugenia Amaral; Nalin, Rafael Storto; Matias, Filipe Inácio

doi:10.1016/j.scienta.2018.11.023

Cited by 48 publications

(25 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The regulation of the antioxidant machinery (Soares, Carvalho, Azevedo, & Fidalgo, ), the mitigation of Cd uptake and translocation have been the focus of several studies, but evidence also shows that the modulation of nutritional status helps plants gain tolerance against Cd toxicity (Souza, Camargos, & Carvalho, ). For instance, low magnesium (Mg) status was associated with increased tolerance to Cd exposure in both monocot and dicot species, such as tomato (Borges et al, ), willow ( Salix viminalis ) (Borišev et al, ), barley ( Hordeum vulgare ) (H. Kudo, Kudo, Uemura, & Kawai, ), rice ( Oryza sativa ) (Chou, Chao, Huang, Hong, & Kao, ), and Arabidopsis thaliana (Hermans, Chen, Coppens, Inzé, & Verbruggen, ), despite being maintained or even increased Cd accumulation. Consistently, the overexpression of A. thaliana Mg transporter (MGT10) in a yeast strain provoked both increased Mg accumulation and decreased Cd tolerance (Li, Tutone, Drummond, Gardner, & Luan, ).…”

Section: Nutrient Status and Plant Tolerance To Cadmium Toxicitymentioning

confidence: 99%

“…Current knowledge on the related biological processes makes it difficult to answer this question. Some studies, however, have proven that plants are able to modulate their nutritional status to cope with stresses, a varying process for different elements (Borges et al, ; Liu et al, ). Misbalanced nutrient concentrations have been scarcely discussed in terms of their benefits for plant development.…”

Section: Nutrient Status and Plant Tolerance To Cadmium Toxicitymentioning

confidence: 99%

“…After being exposed to Cd for 6 days, sensitive tomato accessions showed both much quicker development of root hairs and higher Cd concentration than did tolerant ones under the same exposure (Carvalho et al, ). Another study showed that modifications in the root morphology could be observed from the first to the fourth day of Cd exposure (Borges et al, ). However, variations in the internal Mg status did not trigger any visible changes in root morphology until the fourth day of plant treatment (Niu et al, ), indicating that other factor or factors may trigger early outcomes in root architecture.…”

Section: Acquisition Of Nutrients and Watermentioning

confidence: 99%

“…One of the candidate factors is B, a micronutrient able to affect both rhizogenesis and root hair development (Kutschera & Niklas, ). Boron concentration increased in the roots of various tomato genotypes under Cd exposure, despite no additional B supply to plants (Borges et al, ; Carvalho et al, , 2018a). This means that, to some extent, plants can modulate B uptake and suggests that plants develop a B‐dependent tolerance mechanism against Cd toxicity.…”

Section: Acquisition Of Nutrients and Watermentioning

confidence: 99%

“…Roots, which generally have higher Cd concentrations than do shoots (Kato, Carvalho, Gaziola, Piotto, & Azevedo, ; Piotto et al, ), should be able to quickly activate protective mechanisms to counteract the entrance of positive charges originating from Cd accumulation. One of these mechanisms is probably associated with reducing concentrations of positively charged nutrients in roots; this mechanism can involve enhancing translocation of Mn (and also Zn) from roots to shoots (Borges et al, ; Carvalho, Piotto, Franco, ; Carvalho et al, ) (Figures and ) and may be further potentiated by either decreasing uptake (Carvalho, Piotto, Gaziola, et al, ) or increasing exclusion in the root system. A decreased Mn concentration was observed in roots of Brassica campestris accessions, which improved plant biomass after being subjected to Cd exposure (Zhu, Sun, Fang, Qian, & Yang, ).…”

Section: Equilibrium Of Charges and Phmentioning

confidence: 99%

See 4 more Smart Citations

The sweet side of misbalanced nutrients in cadmium‐stressed plants

Carvalho

Castro

Kozak

2020

Annals of Applied Biology

Self Cite

View full text Add to dashboard Cite

Some plants are able to maintain or improve their performance under cadmium (Cd) exposure, despite high Cd concentrations in roots and shoots, indicating that they have protective strategies to neutralise the side effects from Cd accumulation.The regulation of antioxidant machinery and the mitigation of Cd uptake and translocation have been the focus of several studies, but evidence shows that the modulation of nutritional status is also involved in tolerance mechanisms. Although alterations in the nutrient concentrations are usually coupled to negative outcomes on the development of plants under Cd exposure, current works have shown their "sweet" sides. Here, we provide evidence that the degree of plant tolerance to short Cd exposure is, at least partially, associated with differential changes in magnesium (Mg), manganese (Mn) and boron (B) status, all of which modulate physiological and developmental events, such as root architecture (Mg and/or B status), ionomic balance (Mn and/or B status), biomass production (Mg and/or Mn status) and biomass allocation (Mg/K ratio). Modulation of root architecture can be a strategy to obtain water and nutrients in metal-free patches in a growing medium. Changes in the uptake and/or distribution of nutrients may adjust the ionomic profile to equilibrate charge and pH homeostasis after Cd entrance into the plant. Alterations in the Mn and Mg status may alter the balance between photorespiratory and photosynthetic metabolisms. Finally, reprogramming biomass allocation among organs can be a strategy to remodelling plant body in order to better cope with environmental challenges. The identification and understanding of plant tolerance mechanisms against heavy metal toxicity is necessary to support strategies to mitigate their impacts on crop productivity and quality, supporting food security in increasing environmental contamination in the Anthropocene. K E Y W O R D S biomass allocation and partitioning, boron, magnesium, manganese, photorespiratory metabolism, photosynthetic metabolism

show abstract

Section: Nutrient Status and Plant Tolerance To Cadmium Toxicitymentioning

confidence: 99%

Section: Nutrient Status and Plant Tolerance To Cadmium Toxicitymentioning

confidence: 99%

Section: Acquisition Of Nutrients and Watermentioning

confidence: 99%

Section: Acquisition Of Nutrients and Watermentioning

confidence: 99%

Section: Equilibrium Of Charges and Phmentioning

confidence: 99%

See 3 more Smart Citations

The sweet side of misbalanced nutrients in cadmium‐stressed plants

Carvalho

Castro

Kozak

2020

Annals of Applied Biology

Self Cite

View full text Add to dashboard Cite

show abstract

Salt and heavy metal stress responses and metal uptake potentials of some leafy vegetables

Nasircilar,

Ulukapi,

Topcuoglu

et al. 2024

Agrosystems Geosci & Env

View full text Add to dashboard Cite

Abiotic stress conditions caused by increasing anthropogenic activities over the years necessitate using marginal waters in agricultural irrigation and pose a risk to public health by causing salt stress and heavy metal pollution in the soil. The study exposed rocket (Eruca sativa L.), cress (Lepidium sativum L.), and parsley (Petroselinum crispum Mill.) plants to heavy metals (Zn, Cu, Ni, Pb, Cd, and Cr at rates of 300, 140, 75, 300, 3, and 100 mg kg−1, respectively) and salt stress (3, 6, and 9 dS m−1). Both stress conditions affected plant growth negatively. Biomass losses reaching 88% occurred in the rocket, which was determined to be more sensitive to salt stress than heavy metal stress. In parsley, on the other hand, it was determined that the above‐ground organs were more affected by salt stress, but the negative effect of heavy metal stress on the roots was higher than salt stress. In cress, the cultivars produced different responses to stress factors. The Zeybek cultivar was more affected by salt stress, and Bahargülü was more affected by heavy metal stress. In general, an increase in macro‐ and micronutrients was found under stress conditions. In addition, it was determined that the plants were hyper‐accumulative in terms of lead absorption and were sorted as cress > parsley > rocket in terms of metal uptake. According to these findings, these plants should be grown taking into account the lead values in the soil, and consumers should be aware that they are a group of vegetables that accumulate lead.

show abstract

Cadmium Accumulation in a Tropicalized Lettuce Variety Under Overfertilization Simulation

Nunes

Kiyota

Andrade

2022

CLEAN Soil Air Water

View full text Add to dashboard Cite

Cadmium (Cd) can accumulate in vegetables and enter the food chain. The production of vegetables usually uses excessive amounts of fertilizers which bring environmental and health damages. The authors investigate the relationship between fertilization with nitrogen (N), phosphorus (P), and potassium (K) and the accumulation of Cd and nitrate in lettuce of the tropicalized variety "Gloriosa." The experiment is under greenhouse conditions in a 2×2 factorial design, with the addition or not of 10 mg kg −1 Cd to the soil, and the use of one and three times the recommended rate of N, P, and K for lettuce crop. The higher fertilization rate is related to the increase of Cd in the shoots. Gloriosa lettuce shows high Cd-accumulation capacity, especially in the shoots, evidencing great Cd-translocation. Fresh leaves reach up to 8 mg kg −1 Cd, higher than permissible limits, but high Cd-tolerance and no visual symptoms of toxicity or reduction in biomass production. In plants grown with three times the recommended rates of N, nitrate concentrations are within the permissible limits for leafy vegetables. To avoid Cd-accumulation, besides monitoring soil Cd, it would be necessary to establish safe rates of fertilization for the cultivation of tropicalized lettuce varieties.

show abstract

Nutritional status and root morphology of tomato under Cd-induced stress: Comparing contrasting genotypes for metal-tolerance

Cited by 48 publications

References 50 publications

The sweet side of misbalanced nutrients in cadmium‐stressed plants

The sweet side of misbalanced nutrients in cadmium‐stressed plants

Salt and heavy metal stress responses and metal uptake potentials of some leafy vegetables

Cadmium Accumulation in a Tropicalized Lettuce Variety Under Overfertilization Simulation

Contact Info

Product

Resources

About