Plants facing oxidative challenges—A little help from the antioxidant networks

Soares, Cristiano; Carvalho, Marcia Eugenia Amaral; Fidalgo, Fernanda

doi:10.1016/j.envexpbot.2018.12.009

Cited by 291 publications

(204 citation statements)

References 271 publications

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“…Light of high intensity can damage plant cells and produce ROS (Mullineaux et al, 2018;Pinto-Marijuan & Munne-Bosch, 2014;Szymańska et al, 2017), and plants can scavenge ROS by activating antioxidant systems (enzymatic antioxidant systems and non-enzymatic antioxidant systems). The non-enzymatic antioxidant systems include secondary metabolites such as ascorbic acid, carotenoids, and α-tocopherol (Georgieva et al, 2017;Kataria et al, 2019;Soares et al, 2018). Similarly, phenols and flavonoids can be used as ROS scavengers to remove ROS in plants (Franzoni et al, 2019;Liao, Greenspan & Pegg, 2019;Meini et al, 2019;Naikoo et al, 2019;Schenke et al, 2019;Xiang et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

Response of total phenols, flavonoids, minerals, and amino acids of four edible fern species to four shading treatments

Wang

Gao

et al. 2020

PeerJ

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Total phenols, flavonoids, minerals and amino acids content were investigated in leaves of four fern species grown under four shading treatments with different sunlight transmittance in 35% full sunlight (FS), 13% FS, 8% FS and 4% FS. The leaves of four fern species contain high levels of total phenols and flavonoids, abundant minerals and amino acids, and these all were strongly affected by transmittance. Total phenols and flavonoids content were significantly positively correlated with transmittance, while minerals and total amino acids content were significantly negatively correlated with transmittance, a finding that supports research into how higher light intensity can stimulate the synthesis of phenols and flavonoids, and proper shading can stimulate the accumulation of minerals and amino acids. Matteuccia struthiopteris (L.) Todaro (MS) had the highest total phenols content, Athyrium multidentatum (Doll.) Ching (AM) showed the highest total amino acids, total essential amino acids content, Osmunda cinnamomea (L) var. asiatica Fernald (OCA) exhibited the highest total non-essential amino acids and flavonoids content. Pteridium aquilinum (L.) Kuhn var. latiusculum (Desy.) Underw. ex Heller (PAL) exhibited the highest minerals content. This research can provide a scientific basis for the cultivation and management of those four fern species.

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Section: Discussionmentioning

confidence: 99%

Response of total phenols, flavonoids, minerals, and amino acids of four edible fern species to four shading treatments

Wang

Gao

et al. 2020

PeerJ

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“…L-ascorbate peroxidase, superoxide dismutases and catalase represent the most important enzymes eliminating harmful reactive oxygen species (ROS). Accumulation of ROS is an important consequence of unfavorable conditions (Van Breusegem and Dat, 2006;Farrant and Ruelland, 2015;Lopez-Orenes et al, 2017;Soares et al, 2019). Proper function of the defense system is thus crucial for efficient functioning of plant cells (Das and Roychoudhury, 2014;Kapoor et al, 2015).…”

Section: Antioxidative Enzymesmentioning

confidence: 99%

Plant Origin, but Not Phylogeny, Drive Species Ecophysiological Response to Projected Climate

et al. 2020

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Knowledge of the relationship between environmental conditions and species traits is an important prerequisite for understanding determinants of community composition and predicting species response to novel climatic conditions. Despite increasing number of studies on this topic, our knowledge on importance of genetic differentiation, plasticity and their interactions along larger sets of species is still limited especially for traits related to plant ecophysiology. We studied variation in traits related to growth, leaf chemistry, contents of photosynthetic pigments and activity of antioxidative enzymes, stomata morphology and photosynthetic activity across eight Impatiens species growing along altitudinal gradients in Himalayas cultivated in three different temperature regimes and explored effects of among species phylogenetic relationships on the results. Original and target climatic conditions determine trait values in our system. The traits are either highly plastic (e.g., APX, CAT, plant size, neoxanthin, β-carotene, chlorophyll a/b, DEPSC) or are highly differentiated among populations (stomata density, lutein production). Many traits show strong among population differentiation in degree of plasticity and direction in response to environmental changes. Most traits indicate that the species will profit from the expected warming. This suggests that different processes determine the values of the different traits and separating the importance of genetic differentiation and plasticity is crucial for our ability to predict species response to future climate changes. The results also indicate that evolution of the traits is not phylogenetically constrained but including phylogenetic information into the analysis may improve our understanding of the trait-environment relationships as was apparent from the analysis of SLA.

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“…Some plants can maintain or even improve their performance under Cd exposure, indicating that they have developed either protective strategies to neutralise the potential side effects from Cd toxicity or—a controversial concept—mechanisms to employ Cd as a beneficial element (Carvalho, Castro, & Azevedo, ; Carvalho et al, ). 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.…”

Section: Nutrient Status and Plant Tolerance To Cadmium Toxicitymentioning

confidence: 99%

The sweet side of misbalanced nutrients in cadmium‐stressed plants

Carvalho

Castro

Kozak

2020

Annals of Applied Biology

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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

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Plants facing oxidative challenges—A little help from the antioxidant networks

Cited by 291 publications

References 271 publications

Response of total phenols, flavonoids, minerals, and amino acids of four edible fern species to four shading treatments

Response of total phenols, flavonoids, minerals, and amino acids of four edible fern species to four shading treatments

Plant Origin, but Not Phylogeny, Drive Species Ecophysiological Response to Projected Climate

The sweet side of misbalanced nutrients in cadmium‐stressed plants

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