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Special Issue "Plant Responses to Water-Deficit Stress"
Deadline for manuscript submissions: 29 February 2020.
Interests: Plant stress physiology & biochemistry; Nitrogen, Carbon, Sulfur metabolism in response to plant stress; Redox control; Source-sink relationship; Hormonal regulation of stress tolerance
Tel. [email protected]
Interests: Environmental stress; ROS homeostasis; Hormonal interaction in stress responses and tolerance; Proline metabolism; Proteomics; Senescence; Plant signaling molecules
Water deficiency is the major climatic factor limiting the annual production of forages, cereals, and other crops in temperate regions. It is estimated that 40–60% of the agricultural land around the world suffers from the lack of water. During prolonged periods of water deficit (e.g, drought), the decrease in water availability for transport-associated processes leads to changes in the concentrations of many metabolites, followed by disturbances in amino acid and carbohydrate metabolism.
Significant progress has been made to characterize water stress-modified metabolic pathways. For instance, drought-induced accumulation of compatible solutes, such as special amino acids (e.g., proline), sugars and sugar alcohols, glycinebetaine, and polyamines, has been suggested to be involved in osmotic adjustment, protecting the structure of enzymes and proteins, maintaining membrane integrity, and scavenging reactive oxygen species (ROS). Drought-responsive proteins, such as antioxidative enzymes, pathogenesis-related (PR) proteins, lignification-related enzymes, as well as vegetative storage proteins, and their roles in stress response and tolerance mechanisms have been also extensively studied. Cultivar and/or genotypic variations in water and nutrient use efficiency under water-deficient conditions are considered important subject for management and breeding programs to improve water-deficit stress tolerance. However, the data regarding specific morphological and physiological responses to water-deficit stress have not always been consistent.
In the recent decades, drought-induced secondary metabolites (e.g., phenolics) synthesis and their roles in plant tolerance and defense systems have been elucidated. Extensive progress has been made to further understand the metabolic and/or signaling pathways in the regulatory mechanisms of drought-stress responses and resistance. These include, for example, metabolite and ROS interplay in transcriptional control, hormonal regulation of stress responses, phytohormone, metabolite, and stress cross-signaling, redox-sensing in hormone-modulated control, etc. However, many questions remain to be answered, for instance: “How do plants respond to water-deficit stress and/or ameliorate their water-deficit stress tolerance through sophisticated regulatory networks?”
Articles on recent advances in plant responses to water-deficit stress (original research papers, short communications, reviews, mini-reviews) are welcome. The scope of this Special Issue covers the entire range of pure and applied plant physiology, plant biochemistry, plant molecular biology, and related interdisciplinary aspects. Field trials and agronomic modeling works are also welcome.
Prof. Dr. Tae-Hwan Kim
Dr. Bok-Rye Lee
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.
- antioxidative mechanism
- drought-induced specific proteins
- hormonal regulation
- genotypic variation
- metabolic and signaling pathways
- physiological responses
- regulation of metabolites transport
- redox homeostasis
- stress perception and symptom development
- stress tolerance mechanism
- agronomic modeling
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: Foliar pre-treatment with abscisic acid enhances olive tree drought adaptability
Authors: Cátia Brito1, Lia Dinis1, Helena Ferreira1, José Moutinho-Pereira1, Carlos M. Correia1
Affiliation: 1 CITAB - Centre for the Research and Technology of Agro-Environmental and Biological Sciences, Universidade de Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal *Corresponding author: Carlos M. Correia e-mail: [email protected]
Abstract: Water is the most limiting factor for plants distribution, survival and agricultural productivity in the Mediterranean region. Although olive tree (Olea europaea L.) is a well-adapted species to drought prone environments, water deficit has negative repercussions on its physiological and biochemical pathways. Due to the abscisic acid (ABA) role in regulating plant water relations, in this study was evaluated how a previous ABA foliar application affects the drought and recovery responses of young olive plants. The results showed that ABA application retarded the drought effects on stomatal conductance and, consequently, on photosynthesis at the mid-term. At the same time, pre-treated plants had better water status, along with higher soluble sugars accumulation and lower signals of oxidative stress in leaves. Exogenous ABA also improved photosynthesis recovery and metabolites stabilization upon rewatering. Finally, ABA optimized minerals allocation and improved whole-plant biomass accumulation and water use efficiency. In conclusion, ABA pre-treatment enhances olive tree drought adaptability, including drought tolerance and recovery capacity.