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Plants
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Antioxidant Defense Mechanisms in Plants under Metal(loid) Stress
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Antioxidant Defense Mechanisms in Plants under Metal(loid) Stress

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Physiology and Metabolism".

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 1926

Special Issue Editors

Dr. Jorge M. S. Faria

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Guest Editor
1. INIAV, I.P., National Institute for Agrarian and Veterinary Research, Quinta do Marquês, 2780-159 Lisbon, Portugal
2. MED, Mediterranean Institute for Agriculture, Environment and Development & CHANGE—Global Change and Sustainability Institute, Institute for Advanced Studies and Research, Évora University, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal
Interests: in vitro cultures; ionomics; metabolomics; nematode pest management; plant nutrition; plant physiology and biochemistry; sustainable agriculture
Special Issues, Collections and Topics in MDPI journals
Dr. Ana Paula Honrado Pinto

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Guest Editor
MED, Mediterranean Institute for Agriculture, Environment and Development, Institute for Advanced Studies and Research, Évora University, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal
Interests: biobeds; bioremediation; metal toxicity; plant biochemistry; phytoremediation; soil fertility; sustainable agriculture; wastewater treatment
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Dora Martins Teixeira

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Guest Editor
Chemistry Department of Science and Technology School and HERCULES Laboratory, Évora University, Colégio Luís António Verney, Rua Romão Ramalho, nº59 7000-671, Portugal
Interests: analytical chemistry; archaeometry; agricultural biochemistry; sustainable agriculture; environmental chemistry; water contamination

Special Issue Information

Dear Colleagues,

Many metal and metalloid elements are essential for plant growth or can influence development in various ways, having a direct influence in plants’ primary and secondary metabolism. Conditions of deficiency or toxicity of metal/metalloid elements can lead to impaired metabolic functions in plants due to the lack, or altered function, of key proteins, leading, ultimately, to extensive oxidative damage. Plants react to these conditions by regulating one of the most effective stress-countering mechanisms available to living organisms: the antioxidant response. Plants deploy complex arrays of enzymatic and non-enzymatic antioxidant defense systems to counteract the accumulation of reactive oxygen species that results from metal/metalloid stress and that induces oxidative damage in shoot and root systems. Understanding how these mechanisms shape the plant's response, from the physiological to the molecular level, can provide important information on strategies to mitigate pollution in threatened ecosystems, implement bioremediation strategies and develop greener agricultural practices.

This Special Issue is devoted to the latest research on plant antioxidant mechanisms, including those promoted by beneficial microorganisms (e.g., plant-growth-promoting bacteria, arbuscular mycorrhizal fungi), developed to counteract metal/metalloid stress, providing insight into the conditions of element deficiency or toxicity. Original research articles and reviews are welcome. Research areas may include, but are not limited to, plant–microbe interactions, plant biochemistry and physiology, cytology and histology, genetics and molecular biology.

Dr. Jorge M. S. Faria
Prof. Dr. Ana Paula Pinto
Prof. Dr. Dora Martins Teixeira
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Plants is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Abiotic stress
  • Antioxidant enzymes
  • Antioxidant metabolites
  • Climate change
  • Metal/metalloid deficiency
  • Metal/metalloid stress
  • Phytoremediation
  • Proteomics
  • Reactive oxygen species
  • Redoxomics
  • Stress tolerance

Published Papers (1 paper)

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Research

13 pages, 960 KiB  
Article
Mycorrhizal Colonization of Wheat by Intact Extraradical Mycelium of Mn-Tolerant Native Plants Induces Different Biochemical Mechanisms of Protection
by Jorge M. S. Faria, Pedro Barrulas, Ana Paula Pinto, Isabel Brito and Dora Martins Teixeira
Plants 2023, 12(11), 2091; https://doi.org/10.3390/plants12112091 - 24 May 2023
Cited by 1 | Viewed by 1300
Abstract
Soil with excess Mn induces toxicity and impairs crop growth. However, with the development in the soil of an intact extraradical mycelia (ERM) from arbuscular mycorrhizal fungi (AMF) symbiotic to native Mn-tolerant plants, wheat growth is promoted due to a stronger AMF colonization [...] Read more.
Soil with excess Mn induces toxicity and impairs crop growth. However, with the development in the soil of an intact extraradical mycelia (ERM) from arbuscular mycorrhizal fungi (AMF) symbiotic to native Mn-tolerant plants, wheat growth is promoted due to a stronger AMF colonization and subsequent increased protection against Mn toxicity. To determine the biochemical mechanisms of protection induced by this native ERM under Mn toxicity, wheat grown in soil from previously developed Lolium rigidum (LOL) or Ornithopus compressus (ORN), both strongly mycotrophic plants, was compared to wheat grown in soil from previously developed Silene gallica (SIL), a non-mycotrophic plant. Wheat grown after LOL or ORN had 60% higher dry weight, ca. two-fold lower Mn levels and almost double P contents. Mn in the shoots was preferentially translocated to the apoplast along with Mg and P. The activity of catalase increased; however, guaiacol peroxidase (GPX) and superoxide dismutase (SOD) showed lower activities. Wheat grown after ORN differed from that grown after LOL by displaying slightly higher Mn levels, higher root Mg and Ca levels and higher GPX and Mn-SOD activities. The AMF consortia established from these native plants can promote distinct biochemical mechanisms for protecting wheat against Mn toxicity. Full article
(This article belongs to the Special Issue Antioxidant Defense Mechanisms in Plants under Metal(loid) Stress)
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