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Abiotic Stresses in Plants: From Molecules to Environment—2nd Edition
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Abiotic Stresses in Plants: From Molecules to Environment—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: 31 January 2025 | Viewed by 3169

Special Issue Editor

Dr. Martin Bartas

E-Mail Website
Guest Editor
Department of Biology and Ecology, Faculty of Science, University of Ostrava, 710 00 Ostrava, Czech Republic
Interests: molecular biology; bioinformatics; plant sciences
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue is a continuation of our previous Special Issue on “Abiotic Stresses in Plants: From Molecules to Environment (https://www.mdpi.com/journal/ijms/special_issues/0GR24E915V)”.

It is my great pleasure to invite you to publish your innovative research in this Special Issue, focusing on abiotic stresses in plants. In the modern world, there is an urgent need to broaden our knowledge of molecular mechanisms involved in abiotic stress-related responses, to facilitate the development of novel approaches in agriculture, plant-based medicine, forestry, food production, and other fields. My intention is to provide a friendly and open forum for sharing high-quality manuscripts that address every possible aspect of this complex problem. Full research papers, impactful communications, comprehensive systematic reviews, or featured opinions are particularly welcome. The main Special Issue topics are as follows:

  • Molecular responses to a variety of ‘classic’ abiotic stresses (drought, temperature-dependent stress, salinity, micro/macronutrient deficiency or excess, etc.);
  • Spectral quality of incident light affecting plant development and/or stress responses;
  • Nanoparticles as a new type of plant stressor;
  • Bioinformatic studies of proteins and/or nucleic acid structures related to abiotic stress responses in plants (docking, molecular dynamics, etc.);
  • miRNAs and other noncoding RNAs involved in abiotic stress in plants;
  • Novel methods for abiotic stress research in plants;
  • Age-dependent abiotic stress in plants;
  • Interdisciplinary approaches for abiotic stress research in plants.

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

Please visit the Instructions for Authors page before submitting a manuscript. There is an Article Processing Charge (APC) for publication in this open access journal. For details about the APC please see here. 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

  • stress signaling
  • abiotic stress
  • oxidative stress
  • genotoxic stress

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Related Special Issue

Published Papers (4 papers)

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Research

18 pages, 33302 KiB  
Article
Comparative Transcriptomic Analysis and Candidate Gene Identification for Wild Rice (GZW) and Cultivated Rice (R998) Under Low-Temperature Stress
by Yongmei Yu, Dilin Liu, Feng Wang, Le Kong, Yanhui Lin, Leiqing Chen, Wenjing Jiang, Xueru Hou, Yanxia Xiao, Gongzhen Fu, Wuge Liu and Xing Huo
Int. J. Mol. Sci. 2024, 25(24), 13380; https://doi.org/10.3390/ijms252413380 - 13 Dec 2024
Viewed by 335
Abstract
Rice is a short-day thermophilic crop that originated from the low latitudes of the tropics and subtropics; it requires high temperatures for growth but is sensitive to low temperatures. Therefore, it is highly important to explore and analyze the molecular mechanism of cold [...] Read more.
Rice is a short-day thermophilic crop that originated from the low latitudes of the tropics and subtropics; it requires high temperatures for growth but is sensitive to low temperatures. Therefore, it is highly important to explore and analyze the molecular mechanism of cold tolerance in rice to expand rice planting areas. Here, we report a phenotypic evaluation based on low-temperature stress in indica rice (R998) and wild rice (GZW) and a comparative transcriptomic study conducted at six time points. After 7 days of low-temperature treatment at 10 °C, R998 exhibited obvious yellowing and greening of the leaves, while GZW exhibited high low-temperature resistance, and the leaves maintained their normal morphology and exhibited no yellowing; GZW has a higher survival rate. Principal component analysis (PCA) and cluster analysis of the RNA-seq data revealed that the difference in low-temperature resistance between the two cultivars was caused mainly by the difference in low-temperature treatment after 6 h. Differential expression analysis revealed 2615 unique differentially expressed genes (DEGs) in the R998 material, 1578 unique DEGs in the GZW material, 1874 unique DEGs between R998 and GZW, and 2699 DEGs that were differentially expressed not only between cultivars but also at different time points in the same material under low-temperature treatment. A total of 15,712 DEGs were detected and were significantly enriched in the phenylalanine metabolism, photosynthesis, plant hormone signal transduction, and starch and sucrose metabolism pathways. These 15,712 DEGs included 1937 genes encoding transcription factors (TFs), of which 10 have been identified with functional validation in previous studies. In addition, a gene regulatory network was constructed via weighted gene correlation network analysis (WGCNA), and 12 key genes related to low-temperature tolerance in rice were identified, including five genes encoding TFs, one of which was identified and verified in previous studies. These results provide a theoretical basis for an in-depth understanding of the molecular mechanism of low-temperature tolerance in rice and provide new genetic resources for the study of low-temperature tolerance in rice. Full article
(This article belongs to the Special Issue Abiotic Stresses in Plants: From Molecules to Environment—2nd Edition)
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21 pages, 6411 KiB  
Article
Genome-Wide Identification of the GbUBC Gene Family in Sea-Island Cotton (Gossypium barbadense) and the Active Regulation of Drought Resistance in Cotton by GbUBC23
by Yi Wang, Zheng Zong, Junchen Chen, Xue Sun, Jiahui Wang, Yuehua Yu and Zhiyong Ni
Int. J. Mol. Sci. 2024, 25(23), 12948; https://doi.org/10.3390/ijms252312948 - 2 Dec 2024
Viewed by 551
Abstract
Cotton is an economically critical crop worldwide, and drought stress strongly affects its growth and development. Ubiquitination modifies protein activity and is crucial in numerous biological processes. Ubiquitin-conjugating enzymes serve as intermediaries in the protein ubiquitination process and play important roles in plant [...] Read more.
Cotton is an economically critical crop worldwide, and drought stress strongly affects its growth and development. Ubiquitination modifies protein activity and is crucial in numerous biological processes. Ubiquitin-conjugating enzymes serve as intermediaries in the protein ubiquitination process and play important roles in plant responses to abiotic stress. However, the impact of ubiquitination on the response of cotton to abiotic stress is not fully understood. Bioinformatic methods were employed in this study to analyze the physiochemical characteristics, gene structure, collinearity, expression patterns, and evolutionary relationships of GbUBC gene family members in sea-island cotton. In sea-island cotton, a minimum of 125 GbUBC genes are irregularly distributed across the 26 chromosomes, with multiple instances of gene duplication observed among the members. Phylogenetic analysis categorized the GbUBC gene family into 15 ubiquitin-conjugating enzyme (E2) subgroups, one ubiquitin E2 enzyme variant (UEV) subgroup, and one COP10 subgroup. GbUBC gene expression pattern analyses revealed that most GbUBC genes responded differently to cold, heat, NaCl, and polyethylene glycol (PEG) treatments, with certain GbUBC genes exhibiting high expression levels in specific fiber development period and organs. Furthermore, molecular biology methods were employed to elucidate the biological functions of GbUBC23. The GbUBC23 gene was highly expressed in the cotyledons of sea-island cotton and was activated by PEG treatment. GbUBC23 is localized to the nucleus and cytomembrane. The silencing of the GbUBC23 gene under drought conditions led to decreased drought tolerance and survival rates in sea-island cotton. Compared with those in the control plants, the activity of proline and superoxide dismutase and the expression levels of the drought-induced genes GbNCED3, GbRD22, GbRD26 were significantly lower, but the levels of malondialdehyde and hydrogen peroxide were significantly higher. Our findings revealed 125 members of the GbUBC gene family in sea-island cotton, with the GbUBC23 gene critically contributing to the abiotic stress response. These findings indicate that the GbUBC gene family may play a crucial role in the drought stress response in sea-island cotton. Full article
(This article belongs to the Special Issue Abiotic Stresses in Plants: From Molecules to Environment—2nd Edition)
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27 pages, 21466 KiB  
Article
Identifying Calmodulin and Calmodulin-like Protein Members in Canavalia rosea and Exploring Their Potential Roles in Abiotic Stress Tolerance
by Qianqian Ding, Zengwang Huang, Zhengfeng Wang, Shuguang Jian and Mei Zhang
Int. J. Mol. Sci. 2024, 25(21), 11725; https://doi.org/10.3390/ijms252111725 - 31 Oct 2024
Viewed by 795
Abstract
Calmodulins (CaMs) and calmodulin-like proteins (CMLs) belong to families of calcium-sensors that act as calcium ion (Ca2+) signal-decoding proteins and regulate downstream target proteins. As a tropical halophyte, Canavalia rosea shows great resistance to multiple abiotic stresses, including high salinity/alkalinity, extreme [...] Read more.
Calmodulins (CaMs) and calmodulin-like proteins (CMLs) belong to families of calcium-sensors that act as calcium ion (Ca2+) signal-decoding proteins and regulate downstream target proteins. As a tropical halophyte, Canavalia rosea shows great resistance to multiple abiotic stresses, including high salinity/alkalinity, extreme drought, heat, and intense sunlight. However, investigations of calcium ion signal transduction involved in the stress responses of C. rosea are limited. The CaM and CML gene families have been identified and characterized in many other plant species. Nevertheless, there is limited available information about these genes in C. rosea. In this study, a bioinformatic analysis, including the gene structures, conserved protein domains, phylogenetic relationships, chromosome distribution, and gene synteny, was comprehensively performed to identify and characterize CrCaMs and CrCMLs. A spatio-temporal expression assay in different organs and environmental conditions was then conducted using the RNA sequencing technique. Additionally, several CrCaM and CrCML members were then cloned and functionally characterized using the yeast heterogeneous expression system, and some of them were found to change the tolerance of yeast to heat, salt, alkalinity, and high osmotic stresses. The results of this study provide a foundation for understanding the possible roles of the CrCaM and CrCML genes, especially for halophyte C. rosea’s natural ecological adaptability for its native habitats. This study also provides a theoretical basis for further study of the physiological and biochemical functions of plant CaMs and CMLs that are involved in tolerance to multiple abiotic stresses. Full article
(This article belongs to the Special Issue Abiotic Stresses in Plants: From Molecules to Environment—2nd Edition)
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11 pages, 2926 KiB  
Article
Genome-Wide Association Study for Seed Yield of Tepary Bean Using Whole-Genome Resequencing
by Waltram Ravelombola, Aurora Manley, Hanh Pham, Madeline Brown, Caroline Ruhl and Protik Ghosh
Int. J. Mol. Sci. 2024, 25(20), 11302; https://doi.org/10.3390/ijms252011302 - 21 Oct 2024
Viewed by 1021
Abstract
Tepary bean (Phaseolus acutifolius A. Gray) is a diploid legume species (2n = 2x = 22). It is the most drought- and heat-tolerant crop of the genus Phaseolus. Tepary bean is native to the northern part of Mexico and [...] Read more.
Tepary bean (Phaseolus acutifolius A. Gray) is a diploid legume species (2n = 2x = 22). It is the most drought- and heat-tolerant crop of the genus Phaseolus. Tepary bean is native to the northern part of Mexico and the south-western part of the U.S. The lack of molecular markers associated with agronomic traits such as 100-seed weight and seed yield limit the development of elite tepary bean cultivars. Therefore, the objectives of this study were to evaluate tepary bean for 100-seed weight and yield, and identify single-nucleotide polymorphism (SNP) markers associated with these traits. A total of 230,000 high-quality SNPs obtained from the whole-genome resequencing of 153 tepary bean accessions were used for this study. For 100-seed weight, a total of 5 and 20 SNPs were found using a mixed linear model (MLM) and compressed mixed linear model (cMLM), respectively. A candidate gene, Phacu.CVR.002G320800.13, encoding the squamosa promoter-binding protein-like (SBP domain) transcription factor family protein was found to be associated with 100-seed weight. For seed yield, a total of one and eight SNPs were identified using an MLM and cMLM, respectively. Phacu.CVR.009G294200.1, encoding for peroxidase family protein, was identified as a candidate gene for seed yield. Both Phacu.CVR.002G320800.13 and Phacu.CVR.009G294200.1 are likely to be involved in seed development of tepary bean. This is one of the few studies investigating the genetics of 100-seed weight and seed yield in tepary bean. Full article
(This article belongs to the Special Issue Abiotic Stresses in Plants: From Molecules to Environment—2nd Edition)
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