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

•Traditional and new topics of plant abiotic stress are covered.•New information and other emerging topics of oxidative stress are discussed.•Characterization of ROS types, production processes and sources.•Detailed description of both enzymatic and non-enzymatic antioxidants.•Special focus attribut...

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Bibliographic Details
Published in:Environmental and experimental botany 2019-05, Vol.161, p.4-25
Main Authors: Soares, Cristiano, Carvalho, Marcia E.A., Azevedo, Ricardo A., Fidalgo, Fernanda
Format: Article
Language:English
Subjects:
Annexin
Antioxidant machinery
Cytogenotoxicity
Dehydrin
Enzymatic antioxidant
Non-enzymatic antioxidant
Oxidative stress
Quantitative trait loci
Reactive oxygen species
Redox homeostasis
Signaling compounds
Sugars
Transgenerational effects
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Summary:•Traditional and new topics of plant abiotic stress are covered.•New information and other emerging topics of oxidative stress are discussed.•Characterization of ROS types, production processes and sources.•Detailed description of both enzymatic and non-enzymatic antioxidants.•Special focus attributed to transgenerational effects and QTLs. A large number of reviews have discussed many aspects of oxidative burst due to plant exposure to biotic and abiotic stresses, including the dual role of reactive oxygen species (ROS) as both signaling and toxic compounds, and the strategies developed by plants to cope with this oxidative imbalance. In this review, we have concentrated on fresh new information and other promising and emerging topics of oxidative stress and antioxidant mechanisms in plants, giving particular attention to genotoxicity, transgenerational alterations and quantitative trait loci (QTL) associated with enhancements in the plant tolerance to stresses. Furthermore, besides the discussion of the “classical” enzymatic and non-enzymatic components of plant defense, novel aspects about the components of the antioxidant machinery, which now includes sugars, annexins and dehydrins, are also presented, along with a final section on future directions in this field.
ISSN:0098-8472
1873-7307
DOI:10.1016/j.envexpbot.2018.12.009