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Antioxidants
Special Issues
ROS Homeostasis during Plant Growth and Development
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ROS Homeostasis during Plant Growth and Development

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

Deadline for manuscript submissions: closed (20 January 2024) | Viewed by 5283

Special Issue Editor

Dr. Jozefus Schippers

E-Mail Website
Guest Editor
Department of Molecular Genetics, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
Interests: reactive oxygen species signaling; ROS gradients; plant development; abiotic-stress; transcriptional regulation

Special Issue Information

Dear Colleagues,

Life on earth evolved in the presence of reactive oxygen species (ROS), resulting in a deep and complex connection between biological systems and ROS. Initially, ROS were identified as cell-killing compounds that rapidly found use as sterilizing agents in the pharmaceutical industry. This resulted in a generalization of ROS as toxic compounds that need to be scavenged. Over the last two decades, it has become apparent that ROS are used as signaling molecules in all kingdoms of life. Interestingly, at the subcellular level, each organelle or compartment has its own steady state level of ROS. Thus, each compartment has a specific ROS signature which is monitored by the cell to control processes. As the ROS signature alters upon stress, cells can sense and adapt accordingly. In addition, it has been shown that ROS gradients control stem cell fate in plants and that certain ROS species regulate cell proliferation and differentiation. Still, there is a lack of understanding around how plants maintain ROS gradients during development and how ROS homeostasis is modulated during growth.

This Special Issue welcomes the submission of papers that cover molecular processes and mechanisms that modulate growth and development through the regulation of ROS homeostasis in plants. In addition, insights into the regulation of adaptive growth processes that involve ROS homeostasis during stress acclimation are also warmly welcomed. Researchers are welcome to submit significant contributions as research articles/review articles/methods to this Special Issue.

Dr. Jozefus Schippers
Guest Editor

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

  • ROS gradients
  • cell proliferation and differentiation
  • stem cells
  • growth and development
  • ROS homeostasis
  • ROS signaling
  • plant evolution

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Published Papers (2 papers)

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16 pages, 2676 KiB  
Article
Complex Formation between the Transcription Factor WRKY53 and Antioxidative Enzymes Leads to Reciprocal Inhibition
by Ana Gabriela Andrade Galan, Jasmin Doll, Natalie Faiß, Patricia Weber and Ulrike Zentgraf
Antioxidants 2024, 13(3), 315; https://doi.org/10.3390/antiox13030315 - 5 Mar 2024
Cited by 3 | Viewed by 1969
Abstract
The transcription factor WRKY53 of the model plant Arabidopsis thaliana is an important regulator of leaf senescence. Its expression, activity and degradation are tightly controlled by various mechanisms and feedback loops. Hydrogen peroxide is one of the inducing agents for WRKY53 expression, and [...] Read more.
The transcription factor WRKY53 of the model plant Arabidopsis thaliana is an important regulator of leaf senescence. Its expression, activity and degradation are tightly controlled by various mechanisms and feedback loops. Hydrogen peroxide is one of the inducing agents for WRKY53 expression, and a long-lasting intracellular increase in H2O2 content accompanies the upregulation of WRKY53 at the onset of leaf senescence. We have identified different antioxidative enzymes, including catalases (CATs), superoxide dismutases (SODs) and ascorbate peroxidases (APXs), as protein interaction partners of WRKY53 in a WRKY53-pulldown experiment at different developmental stages. The interaction of WRKY53 with these enzymes was confirmed in vivo by bimolecular fluorescence complementation assays (BiFC) in Arabidopsis protoplasts and transiently transformed tobacco leaves. The interaction with WRKY53 inhibited the activity of the enzyme isoforms CAT2, CAT3, APX1, Cu/ZuSOD1 and FeSOD1 (and vice versa), while the function of WRKY53 as a transcription factor was also inhibited by these complex formations. Other WRKY factors like WRKY18 or WRKY25 had no or only mild inhibitory effects on the enzyme activities, indicating that WRKY53 has a central position in this crosstalk. Taken together, we identified a new additional and unexpected feedback regulation between H2O2, the antioxidative enzymes and the transcription factor WRKY53. Full article
(This article belongs to the Special Issue ROS Homeostasis during Plant Growth and Development)
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22 pages, 4826 KiB  
Article
24-Epibrassinolide Facilitates Adventitious Root Formation by Coordinating Cell-Wall Polyamine Oxidase- and Plasma Membrane Respiratory Burst Oxidase Homologue-Derived Reactive Oxygen Species in Capsicum annuum L.
by Zhengyang Wen, Zhifeng Chen, Xinyan Liu, Jingbo Sun, Feng Zhang, Mengxia Zhang and Chunjuan Dong
Antioxidants 2023, 12(7), 1451; https://doi.org/10.3390/antiox12071451 - 19 Jul 2023
Cited by 6 | Viewed by 2045
Abstract
Adventitious root (AR) formation is a critical process in cutting propagation of horticultural plants. Brassinosteroids (BRs) have been shown to regulate AR formation in several plant species; however, little is known about their exact effects on pepper AR formation, and the downstream signaling [...] Read more.
Adventitious root (AR) formation is a critical process in cutting propagation of horticultural plants. Brassinosteroids (BRs) have been shown to regulate AR formation in several plant species; however, little is known about their exact effects on pepper AR formation, and the downstream signaling of BRs also remains elusive. In this study, we showed that treatment of 24-Epibrassinolide (EBL, an active BR) at the concentrations of 20–100 nM promoted AR formation in pepper (Capsicum annuum). Furthermore, we investigated the roles of apoplastic reactive oxygen species (ROS), including hydrogen peroxide (H2O2) and superoxide radical (O2•−), in EBL-promoted AR formation, by using physiological, histochemical, bioinformatic, and biochemical approaches. EBL promoted AR formation by modulating cell-wall-located polyamine oxidase (PAO)-dependent H2O2 production and respiratory burst oxidase homologue (RBOH)-dependent O2•− production, respectively. Screening of CaPAO and CaRBOH gene families combined with gene expression analysis suggested that EBL-promoted AR formation correlated with the upregulation of CaPAO1, CaRBOH2, CaRBOH5, and CaRBOH6 in the AR zone. Transient expression analysis confirmed that CaPAO1 was able to produce H2O2, and CaRBOH2, CaRBOH5, and CaRBOH6 were capable of producing O2•−. The silencing of CaPAO1, CaRBOH2, CaRBOH5, and CaRBOH6 in pepper decreased the ROS accumulation and abolished the EBL-induced AR formation. Overall, these results uncover one of the regulatory pathways for BR-regulated AR formation, and extend our knowledge of the functions of BRs and of the BRs-ROS crosstalk in plant development. Full article
(This article belongs to the Special Issue ROS Homeostasis during Plant Growth and Development)
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