Special Issue "Abiotic Stress Tolerance in Crop and Medical Plants"
A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Response to Abiotic Stress and Climate Change".
Deadline for manuscript submissions: 30 November 2020.
Interests: photosynthesis; photosynthetic organisms; photosynthetic membranes; adaptation mechanisms of plants to abiotic stress factors; exogenous application of protectants; chlorophyll fluorescence; electron transport; oxygen-evolving reactions; heavy metals; phytoremediation
Global climate change and environmental pollution substantially restrict crop growth and development, which highlights the need to develop and research new crop species with increased tolerance to various abiotic stresses. In recent years, there is an increasing interest in clarifying the mechanisms of plant adaptation and tolerance against environmental stress. Many researchers have focused their efforts on exploring the resistance of different crop species (including varieties, cultivars, genotypes, hybrids, and others) to different environmental stress factors, alone or in combination, such as high light, UV radiation, oxidative stress, salinity, water stress, extreme temperatures, heavy metal toxicity, etc. Achieving stable crop production in stressful conditions depends largely on the ability of plants to maintain their functions under environmental stress. One of the methods for improving plant tolerance to different abiotic stresses includes application of exogenous phytoprotectants, which can mitigate their effects on plants.
Plant responses to environmental stresses are complex and involve a wide array of morphological, physiological, and biochemical processes. Photosynthesis is the primary physiological process affected by abiotic stresses in all its phases. Photosynthetic membranes are very sensitive to environmental stress as damage of the photosynthetic apparatus occurs at different levels of its organization: chloroplast ultrastructure, pigment, lipid, and protein composition. Therefore, knowledge of the molecular mechanisms involved in the response and adaptation of the photosynthetic apparatus to stressful conditions is of great importance for a deeper understanding of plant tolerance under abiotic stress, which can support new strategies for the development of climate-resilient crops.
The current Special Issue will also draw attention to medicinal plants (herbs) and the effects of drought, salt, light, temperature, and heavy metal stresses on their adaptation mechanisms and secondary metabolite production.
Scientists from all over the world are invited to submit original research and review articles on topics related to crop and medical plant tolerance to adverse environmental conditions.
Prof. Dr. Anelia Dobrikova
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 papers will be 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 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 1600 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.
- abiotic stress
- adaptation mechanisms
- crop plant responses
- environmental pollution
- exogenous phytoprotectants
- medical plant tolerance
- oxidative stress defense systems
- photosynthetic apparatus
- reactive oxygen species
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Title: Field assessment of drought tolerance in maize using multiple stress indexes
Authors: Fokion Papathanasiou
Affiliation: Department of Agriculture School of Agricultural Sciences University of Western Macedonia-Greece
Title: The molecular and functional characterization of the durum wheat lipoxygenase TdLOX2 suggests its role in hyperosmotic stress response
Authors: Daniela Trono
Affiliation: Consiglio per la Ricerca in Agricoltura e l’Analisi dell’Economia Agraria, Centro di Ricerca Cerealicoltura e Colture Industriali, S.S. 673, Km 25,200, 71122 Foggia, Italy.
Abstract: In plants, lipoxygenases (LOXs) are involved in various process, such as growth, development, and stress responses. In the present study, the expression pattern of six durum wheat LOX-encoding genes (Lpx-B1.1, Lpx-B1.2, Lpx-A2, Lpx-B2, Lpx-A3 and Lpx-B3) under hyperosmotic stress was investigated. With osmotic (0.42 M mannitol) and salt (0.21 M NaCl) stress imposed at the early stages of seedling growth, a strong induction of the TdLpx-A2 gene expression in the shoots paralleled an equally strong increase in the LOX activity. Enhanced levels of malondialdehyde (MDA) and increased rates of superoxide anion generation were also observed as a consequence of the stress imposition. Sequence analysis of the TdLOX2 encoded by the TdLpx-A2 gene revealed that it belonged to the type-1 9-LOX group. When overexpressed in E. coli, TdLOX2 exhibited normal enzyme activity, high sensitivity to specific LOX inhibitors, with 76% and 99% inhibition by salicylhydroxamic and propylgallate, respectively, and a preference for linoleic acid as substrate, which was converted exclusively to its corresponding 13-hydroperoxide. This unexpected position specificity is probably due to the unusual TV/K motif that in TdLOX2 replaces the canonical TV/R motif of 9-LOXs. Treatment of seedlings with propylgallate strongly suppressed the increase in LOX activity induced by the hyperosmotic stress, the MDA accumulation was also reduced but less markedly, whereas the rate of superoxide anion generation was even more increased. Taken together, our results suggest that the up-regulation of the TdLpx-A2 gene is a component of the durum wheat response to hyperosmotic stress and that TdLOX2 may act by counteracting the excessive generation of harmful reactive oxygen species responsible for the oxidative damages that could occur in plants under stress.