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Molecular Advances in Abiotic Stress Signaling in Plants: Focus on Atmospheric Stressors, 2nd Edition

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: closed (30 April 2025) | Viewed by 416

Special Issue Editor


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Guest Editor
Department of Biochemistry and Microbiology, Institute of Biology, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland
Interests: molecular, biochemical, and physiological mechanisms of plant responses to pathogens and pests especially reactive oxygen and nitrogen species; enzymatic and non-enzymatic antioxidants; sugars as signaling molecules; regulation of proteolysis and nitrogen metabolism; additional research topics concern the plant abiotic stress especially metallic trace elements and mechanisms of combined stresses
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Special Issue Information

Dear Colleagues,

Plants’ reactions to abiotic stresses are extraordinarily complex. They take place at various levels of plant organization, starting from changes in biochemical processes, such as respiration, photosynthesis, and transpiration, and ending during morphological and anatomical changes in plants’ organs. However, these abovementioned changes are preceded by the activation of efficient molecular signaling machinery, which ensures that plants tune in to external abiotic stimuli.

As the first edition was successful, this second edition requests original and review papers concerning hormonal and sugar signaling, reactive oxygen–nitrogen–sulfur species interactions, cascades of kinases, transcription factors, and changes in gene expression and gene expression regulation in response to abiotic stresses operating separately, simultaneously, or sequentially. We invite publications in the fields of cold, heat, frost, cold waves, heat waves, air quality and pollution, UV radiation, light quality, and other atmospheric factors. Submitted manuscripts must look at clear abiotic stress signaling aspects at the molecular level, which should be reflected not only in the presented results, but also in their discussion. We also encourage the submission of manuscripts from the developing discipline of molecular biology, namely interactomics, describing molecular interactions between molecules belonging to different biochemical groups (proteins, nucleic acids, lipids, and carbohydrates) and within a given group.

For more papers from the first edition, see https://www.mdpi.com/journal/ijms/special_issues/K7RU8RIY4E

Dr. Mateusz Labudda
Guest Editor

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Keywords

  • abiotic stress
  • interactomics
  • gene expression regulation
  • kinases
  • oxidative stress
  • phytohormones
  • signaling, sugar sensing and signaling
  • transcription factors

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Published Papers (1 paper)

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20 pages, 443 KiB  
Article
Agronomic and Metabolic Responses of Citrus clementina to Long-Term Irrigation with Saline Reclaimed Water as Abiotic Factor
by David Auñón-Calles, María Pinciroli, Emilio Nicolás, Angel Gil-Izquierdo, José Antonio Gabaldón, María Puerto Sánchez-Iglesias, Angel Antonio Carbonell-Barrachina, Federico Ferreres, Carlos J. García and Cristina Romero-Trigueros
Int. J. Mol. Sci. 2025, 26(7), 3450; https://doi.org/10.3390/ijms26073450 - 7 Apr 2025
Viewed by 251
Abstract
The Panel on Climate Change has predicted an intensification of drought and heat waves. The aim of this study was to determine the physiological response of mandarin trees in a semi-arid area to the effects of a long period of irrigation with saline [...] Read more.
The Panel on Climate Change has predicted an intensification of drought and heat waves. The aim of this study was to determine the physiological response of mandarin trees in a semi-arid area to the effects of a long period of irrigation with saline reclaimed water (RW) and freshwater (FW) in terms of leaf mineral constitution, free amino acids and phytohormone balance, and their influence on yield and fruit quality. Results showed that higher foliar levels of Cl, B, Li+, and Br were found in the RW treatment. In addition, fruit quality (juice content, soluble solid content, titratable acid, and maturity index) and yield (fruit weight and diameter) parameters and growth canopy were negatively affected by irrigation with RW. Regardless of the treatments, L-alanine (Ala) and proline were the most abundant amino acids, with Ala being described as a majority for the first time in the literature. Concretely, in FW, the total amino acid content was twice as high as the concentration in RW (51,359.46 and 23,833.31 ng g−1, respectively). The most abundant hormones were 1-Aminocyclopropane-1-carboxylic acid and trans-zeatin in both treatments. The saline stress response would be reflected in the higher concentration of salicylic and abscisic acids in the leaves of RW trees. In view of the high correlations found in a simplified correlation matrix of (i) Ala with the canopy growth and (ii) the salicylic acid (SA) with most of the evaluated agrometabolic parameters, it can be concluded that the exogenous application of the Ala and SA would increase tree size and could mitigate the effects of salt stress, respectively. However, these treatments could be completed with the external application of ACC since this phytohormone presents the lowest parameter during treatment with RW. Full article
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