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Special Issue "Molecular Mechanisms of Plant Abiotic Stress Tolerance"

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A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Plant Sciences".

Deadline for manuscript submissions: 31 October 2023 | Viewed by 1770

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Prof. Dr. Michael Moustakas

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Department of Botany, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
Interests: plant ecophysiology; biotic stress; abiotic stress; photosynthesis; antioxidative mechanisms; photoprotective mechanisms; mineral nutrition; ROS
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Dear Colleagues,

During their life cycle, plants are continuously exposed to various abiotic stress factors that negatively influence plant growth and development and crop productivity. However, plants have developed several dynamic approaches at the morphological, physiological, and biochemical levels, permitting them to avoid and/or tolerate abiotic stresses. Avoidance mechanisms are mainly morphological and physiological adjustments that provide an escape of the abiotic stress factor. In the case of drought stress, these adjustments involve an increased root system, increased leaf thickness, decreased leaf area, reduced stomatal number and conductance, and leaf rolling or folding to minimize evapotranspiration. Drought tolerance traits are correlated with the maintenance of the plant water status throughout osmotic adjustment by the accumulation of osmolytes that help the plants to preserve their water status, as well as to acclimate to water deﬁcit. The impact of abiotic stress factors on plants depends on the intensity, frequency, and duration of the stress, as well as on the plant species.

Despite the various studies which have aimed to elucidate the mechanisms of plant tolerance to abiotic stress factors, the exact molecular mechanisms are not yet fully understood. Therefore, in order evaluate the main reasons of crop yield reduction and food production worldwide, we need to illuminate the molecular mechanisms of plant abiotic stress tolerance to various stresses, such as drought, temperature, salinity, nutrient deficiency, light intensity, heavy metals, UV radiation, etc., as well as their influence on the growth, physiology, biochemistry, and photosynthesis of the plant species.

This Special Issue of IJMS will highlight the molecular mechanisms of plant tolerance to abiotic stresses and thus contribute to a better understanding of plant responses to stress factors that can help in the development of realistic interventions for increasing agricultural productivity.

Scientists from all over the world are invited to submit original research and review articles on all aspects of plant physiology and development, from growth, water relations, nutrition, photosynthesis, and related plant physiological processes to changes in metabolism using all omic techniques (ionomics, metabolomics, transcriptomics, proteomics, genomics, etc.).

Prof. Dr. Michael Moustakas
Guest Editor

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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. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

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Keywords

acclimation
drought
salinity
pesticides
high–low temperature
high–low light intensity
nutrient deficiencies
heavy metals
UV radiation
photosynthetic efficiency
ROS
antioxidant mechanisms
redox regulation

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Research

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Open AccessArticle

Transcription Factor TaMYB30 Activates Wheat Wax Biosynthesis

and

Int. J. Mol. Sci. 2023, 24(12), 10235; https://doi.org/10.3390/ijms241210235 - 16 Jun 2023

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Abstract

The waxy cuticle covers a plant’s aerial surface and contributes to environmental adaptation in land plants. Although past decades have seen great advances in understanding wax biosynthesis in model plants, the mechanisms underlying wax biosynthesis in crop plants such as bread wheat remain to be elucidated. In this study, wheat MYB transcription factor TaMYB30 was identified as a transcriptional activator positively regulating wheat wax biosynthesis. The knockdown of TaMYB30 expression using virus-induced gene silencing led to attenuated wax accumulation, increased water loss rates, and enhanced chlorophyll leaching. Furthermore, TaKCS1 and TaECR were isolated as essential components of wax biosynthetic machinery in bread wheat. In addition, silencing TaKCS1 and TaECR resulted in compromised wax biosynthesis and potentiated cuticle permeability. Importantly, we showed that TaMYB30 could directly bind to the promoter regions of TaKCS1 and TaECR genes by recognizing the MBS and Motif 1 cis-elements, and activate their expressions. These results collectively demonstrated that TaMYB30 positively regulates wheat wax biosynthesis presumably via the transcriptional activation of TaKCS1 and TaECR. Full article

(This article belongs to the Special Issue Molecular Mechanisms of Plant Abiotic Stress Tolerance)

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Open AccessReview

Emerging Roles of Receptor-like Protein Kinases in Plant Response to Abiotic Stresses

Akanksha Gandhi

and

Ralf Oelmüller

Int. J. Mol. Sci. 2023, 24(19), 14762; https://doi.org/10.3390/ijms241914762 (registering DOI) - 29 Sep 2023

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Abstract

The productivity of plants is hindered by unfavorable conditions. To perceive stress signals and to transduce these signals to intracellular responses, plants rely on membrane-bound receptor-like kinases (RLKs). These play a pivotal role in signaling events governing growth, reproduction, hormone perception, and defense responses against biotic stresses; however, their involvement in abiotic stress responses is poorly documented. Plant RLKs harbor an N-terminal extracellular domain, a transmembrane domain, and a C-terminal intracellular kinase domain. The ectodomains of these RLKs are quite diverse, aiding their responses to various stimuli. We summarize here the sub-classes of RLKs based on their domain structure and discuss the available information on their specific role in abiotic stress adaptation. Furthermore, the current state of knowledge on RLKs and their significance in abiotic stress responses is highlighted in this review, shedding light on their role in influencing plant–environment interactions and opening up possibilities for novel approaches to engineer stress-tolerant crop varieties. Full article

(This article belongs to the Special Issue Molecular Mechanisms of Plant Abiotic Stress Tolerance)

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Open AccessReview

Functions of Plant Phytochrome Signaling Pathways in Adaptation to Diverse Stresses

and

Int. J. Mol. Sci. 2023, 24(17), 13201; https://doi.org/10.3390/ijms241713201 - 25 Aug 2023

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Abstract

Phytochromes are receptors for red light (R)/far-red light (FR), which are not only involved in regulating the growth and development of plants but also in mediated resistance to various stresses. Studies have revealed that phytochrome signaling pathways play a crucial role in enabling plants to cope with abiotic stresses such as high/low temperatures, drought, high-intensity light, and salinity. Phytochromes and their components in light signaling pathways can also respond to biotic stresses caused by insect pests and microbial pathogens, thereby inducing plant resistance against them. Given that, this paper reviews recent advances in understanding the mechanisms of action of phytochromes in plant resistance to adversity and discusses the importance of modulating the genes involved in phytochrome signaling pathways to coordinate plant growth, development, and stress responses. Full article

(This article belongs to the Special Issue Molecular Mechanisms of Plant Abiotic Stress Tolerance)

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Special Issue "Molecular Mechanisms of Plant Abiotic Stress Tolerance"

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