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Antioxidants
Special Issues
Role of Reactive Oxygen Species in Response to Environmental Stress
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Role of Reactive Oxygen Species in Response to Environmental Stress

A special issue of Antioxidants (ISSN 2076-3921). This special issue belongs to the section "ROS, RNS and RSS".

Deadline for manuscript submissions: closed (31 October 2023) | Viewed by 4650

Special Issue Editors

Prof. Dr. Kamel Hessini

E-Mail Website
Guest Editor
1. Department of Biology, College of Science, Taif University, Taif 21944, Saudi Arabia
2. Center of Biotechnology of Borj Cédria (CBBC), Hammam-Lif, Tunisia
Interests: biomass; photosynthesis; plant physiology; water relations; drought; salinity
Prof. Dr. Kadambot H.M. Siddique

E-Mail Website
Guest Editor
The UWA Institute of Agriculture, The University of Western Australia, Crawley, WA 6009, Australia
Interests: agriculture; agronomy; abiotic stresses; biotic stresses; plant/crop physiology; heavy metals; plant/crop production; plant/crop nutrition; genetics and plant breeding
Prof. Dr. Esmat Farouk Ali Ahmed

E-Mail Website
Guest Editor
1. Faculty of Agriculture, Horticulture Department, Assiut University, Assiut, Egypt
2. Department of Biology, College of Science, Taif University, Taif 21944, Saudi Arabia
Interests: abiotic stresses; biotic stresses; plant physiology; heavy metals; plant production; medicinal plants; plant nutrition

Special Issue Information

Dear Colleagues,
Reactive oxygen species (ROS) are generated from the redox reactions of plants, including the processes of respiration and photosynthesis. Several related studies have shown that ROS are toxic by-products of some pathways of metabolism. In recent times, the ideas surrounding ROS have changed due to the species' involvement in the developmental processes of plants from acting as signaling molecules. In plants, ROS also play an important regulatory role in many growth processes, such as cell proliferation and differentiation, apoptosis, seed germination, stemness, root hair growth, pollen tube development, plant senescence, and other complex metabolic processes that directly or indirectly affect plants. ROS have specific mechanisms by which they influence precursor processes, but the question of ROS perception and signaling cascades remains open. Therefore, and taking into account the facts mentioned above, we propose this Special Issue. We mainly seek relevant scientific research related to ROS and its roles in plant growth and development during the exposure of plants to environmental stresses; this primarily includes water and salt stresses, as well as other types of stress that are yet unknown. Hence, this Special Issue aims to present the latest scientific research in this field and areas that may be related to the subject of the issue.

Prof. Dr. Kamel Hessini
Prof. Dr. Kadambot H.M. Siddique
Prof. Dr. Esmat Farouk Ali Ahmed
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. Antioxidants is an international peer-reviewed open access monthly 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 2900 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

  • reactive oxygen species (ROS)
  • drought
  • salinity
  • oxidative stress
  • heavy metals stress

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Published Papers (2 papers)

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Research

20 pages, 3414 KiB  
Article
Seed Priming with Salicylic Acid Alleviates Salt Stress Toxicity in Barley by Suppressing ROS Accumulation and Improving Antioxidant Defense Systems, Compared to Halo- and Gibberellin Priming
by Hasna Ellouzi, Walid Zorrig, Souhir Amraoui, Samia Oueslati, Chedly Abdelly, Mokded Rabhi, Kadambot H. M. Siddique and Kamel Hessini
Antioxidants 2023, 12(9), 1779; https://doi.org/10.3390/antiox12091779 - 18 Sep 2023
Cited by 11 | Viewed by 2406
Abstract
Plants are highly sensitive to various environmental stresses, which can hinder their growth and reduce yields. In this study, we investigated the potential of seed priming with salicylic acid (SA), gibberellic acid (GA3), and sodium chloride (NaCl) to mitigate the adverse [...] Read more.
Plants are highly sensitive to various environmental stresses, which can hinder their growth and reduce yields. In this study, we investigated the potential of seed priming with salicylic acid (SA), gibberellic acid (GA3), and sodium chloride (NaCl) to mitigate the adverse effects of salinity stress in Hordeum vulgare at the germination and early seedling stages. Exposing H. vulgare seeds to salt stress reduced the final germination percentage and seedling shoot and root growth. Interestingly, all seed treatments significantly improved salt-induced responses, with GA3 being more effective in terms of germination performance, plant growth, and photosynthesis. SA priming exhibited promising effects on antioxidant defense mechanisms, proline, sugar, and ascorbic acid production. Notably, SA priming also suppressed reactive oxygen species accumulation and prevented lipid peroxidation. These findings highlight the ability of SA to manage crosstalk within the seed, coordinating many regulatory processes to support plant adaptation to salinity stress. Full article
(This article belongs to the Special Issue Role of Reactive Oxygen Species in Response to Environmental Stress)
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15 pages, 4136 KiB  
Article
Hydrogen Cyanamide Causes Reversible G2/M Cell Cycle Arrest Accompanied by Oxidation of the Nucleus and Cytosol
by Yazhini Velappan, Ambra de Simone, Santiago Signorelli, John A. Considine, Christine H. Foyer and Michael J. Considine
Antioxidants 2023, 12(7), 1330; https://doi.org/10.3390/antiox12071330 - 23 Jun 2023
Viewed by 1539
Abstract
Hydrogen cyanamide (HC) has been widely used in horticulture to trigger bud burst following dormancy. Its use has been banned in some countries due to human health concerns, however the search for effective safe alternatives is delayed by lack of knowledge of the [...] Read more.
Hydrogen cyanamide (HC) has been widely used in horticulture to trigger bud burst following dormancy. Its use has been banned in some countries due to human health concerns, however the search for effective safe alternatives is delayed by lack of knowledge of the mechanism of HC action. Earlier studies demonstrate that HC stimulates the production of reactive oxygen species (ROS) and alters the rate of cell division. However, the relationships between HC effects on ROS, redox (reduction/oxidation) homeostasis and cell division are unknown. This study used Arabidopsis thaliana ((L.) Heynh.) seedlings expressing the redox reporter roGFP2 to measure the oxidation states of the nuclei and cytosol in response to HC treatment. The Cytrap dual cell cycle phase marker system and flow cytometry were used to study associated changes in cell proliferation. HC (1.5 mM) reversibly inhibited root growth during a 24 h treatment. Higher concentrations were not reversible. HC did not synchronise the cell cycle, in contrast to hydroxyurea. Rather, HC caused a gradual accumulation of cells in the G2/M phase and decline of G1/S phase cells, 16 to 24 h post-treatment. This was accompanied by increased oxidation of both the nuclei and cytosol. Taken together, these findings show that HC impairs proliferation of embryonic root meristem cells in a reversible manner through restriction of G2/M transition accompanied by increased cellular oxidation. Full article
(This article belongs to the Special Issue Role of Reactive Oxygen Species in Response to Environmental Stress)
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