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New Insights in Plant Abiotic Stress
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New Insights in Plant Abiotic Stress

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 December 2024 | Viewed by 6428

Special Issue Editor

Dr. Bernard W. M. Wone

E-Mail Website
Guest Editor
Department of Biology, University of South Dakota, Vermillion, SD 57069, USA
Interests: evolution; molecular cloning; extremophyte; abiotic stress; functional genomics; nanotechnologies; omics; transcriptional regulation; gene regulatory networks; environmental stress resiliency
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Abiotic stresses, such as heat, cold, high salinity, heavy metals, and ultraviolet radiation, are hostile to plant growth and development, leading to great crop yield losses worldwide. It is necessary to develop new methods, tools, and equipment to predict the changes that could be caused by abiotic stresses at the current time. This will make it possible to reduce production losses and increase crop tolerance.

IJMS has organized a series of Special Issues to highlight the latest advancements in science in order to be at the forefront of different fields of research. This editorial initiative of particular relevance, led by Dr. Bernie Wone, is focused on new insights, novel developments, current challenges, latest discoveries, recent advances, and future perspectives in the field of plant abiotic stress.

The present Special Issue, entitled “New Insights in Plant Abiotic Stress”, aims to present recent research developments to the wider community involved in this field. We welcome contributions in this field.

Dr. Bernard W. M. Wone
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

  • plant abiotic stress
  • heat
  • cold
  • high salinity
  • heavy metals

Published Papers (5 papers)

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Research

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20 pages, 4074 KiB  
Article
Genome-Wide Identification and Expression Analysis of TGA Family Genes Associated with Abiotic Stress in Sunflowers (Helianthus annuus L.)
by Qinzong Zeng, Jiafeng Gu, Maohong Cai, Yingwei Wang, Qinyu Xie, Yuliang Han, Siqi Zhang, Lingyue Lu, Youheng Chen, Youling Zeng and Tao Chen
Int. J. Mol. Sci. 2024, 25(7), 4097; https://doi.org/10.3390/ijms25074097 - 07 Apr 2024
Viewed by 557
Abstract
Sunflower (Helianthus annuus L.) is an important, substantial global oil crop with robust resilience to drought and salt stresses. The TGA (TGACG motif-binding factor) transcription factors, belonging to the basic region leucine zipper (bZIP) family, have been implicated in orchestrating multiple biological [...] Read more.
Sunflower (Helianthus annuus L.) is an important, substantial global oil crop with robust resilience to drought and salt stresses. The TGA (TGACG motif-binding factor) transcription factors, belonging to the basic region leucine zipper (bZIP) family, have been implicated in orchestrating multiple biological processes. Despite their functional significance, a comprehensive investigation of the TGA family’s abiotic stress tolerance in sunflowers remains elusive. In the present study, we identified 14 TGA proteins in the sunflower genome, which were unequally distributed across 17 chromosomes. Employing phylogenetic analysis encompassing 149 TGA members among 13 distinct species, we revealed the evolutionary conservation of TGA proteins across the plant kingdom. Collinearity analysis suggested that both HaTGA01 and HaTGA03 were generated due to HaTGA08 gene duplication. Notably, qRT-PCR analysis demonstrated that HaTGA04, HaTGA05, and HaTGA14 genes were remarkably upregulated under ABA, MeJA, and salt treatments, whereas HaTGA03, HaTGA06, and HaTGA07 were significantly repressed. This study contributes valuable perspectives on the potential roles of the HaTGA gene family under various stress conditions in sunflowers, thereby enhancing our understanding of TGA gene family dynamics and function within this agriculturally significant species. Full article
(This article belongs to the Special Issue New Insights in Plant Abiotic Stress)
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15 pages, 4956 KiB  
Article
Genome-Wide Identification of LOX Gene Family and Its Expression Analysis under Abiotic Stress in Potato (Solanum tuberosum L.)
by Jinyong Zhu, Limin Chen, Zhitao Li, Weilu Wang, Zheying Qi, Yuanming Li, Yuhui Liu and Zhen Liu
Int. J. Mol. Sci. 2024, 25(6), 3487; https://doi.org/10.3390/ijms25063487 - 20 Mar 2024
Viewed by 674
Abstract
The lipoxygenases (LOXs) are non-heme iron-containing dioxygenases that play an important role in plant growth and defense responses. There is scarce knowledge regarding the LOX gene family members and their involvement in biotic and abiotic stresses in potato. In this study, a total [...] Read more.
The lipoxygenases (LOXs) are non-heme iron-containing dioxygenases that play an important role in plant growth and defense responses. There is scarce knowledge regarding the LOX gene family members and their involvement in biotic and abiotic stresses in potato. In this study, a total of 17 gene family members (StLOXs) in potato were identified and clustered into three subfamilies: 9-LOX type I, 13-LOX type I, and 13-LOX type II, with eleven, one, and five members in each subfamily based on phylogenetic analysis. By exploiting the RNA-seq data in the Potato Genome Sequencing Consortium (PGSC) database, the tissue-specific expressed and stress-responsive StLOX genes in double-monoploid (DM) potato were obtained. Furthermore, six candidate StLOX genes that might participate in drought and salt response were determined via qPCR analysis in tetraploid potato cultivars under NaCl and PEG treatment. Finally, the involvement in salt stress response of two StLOX genes, which were significantly up-regulated in both DM and tetraploid potato under NaCl and PEG treatment, was confirmed via heterologous expression in yeast under salt treatment. Our comprehensive analysis of the StLOX family provides a theoretical basis for the potential biological functions of StLOXs in the adaptation mechanisms of potato to stress conditions. Full article
(This article belongs to the Special Issue New Insights in Plant Abiotic Stress)
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26 pages, 4693 KiB  
Article
Genomic and Epigenomic Changes in the Progeny of Cold-Stressed Arabidopsis thaliana Plants
by Ashif Rahman, Narendra Singh Yadav, Boseon Byeon, Yaroslav Ilnytskyy and Igor Kovalchuk
Int. J. Mol. Sci. 2024, 25(5), 2795; https://doi.org/10.3390/ijms25052795 - 28 Feb 2024
Viewed by 665
Abstract
Plants are continuously exposed to various environmental stresses. Because they can not escape stress, they have to develop mechanisms of remembering stress exposures somatically and passing it to the progeny. We studied the Arabidopsis thaliana ecotype Columbia plants exposed to cold stress for [...] Read more.
Plants are continuously exposed to various environmental stresses. Because they can not escape stress, they have to develop mechanisms of remembering stress exposures somatically and passing it to the progeny. We studied the Arabidopsis thaliana ecotype Columbia plants exposed to cold stress for 25 continuous generations. Our study revealed that multigenerational exposure to cold stress resulted in the changes in the genome and epigenome (DNA methylation) across generations. Main changes in the progeny were due to the high frequency of genetic mutations rather than epigenetic changes; the difference was primarily in single nucleotide substitutions and deletions. The progeny of cold-stressed plants exhibited the higher rate of missense non-synonymous mutations as compared to the progeny of control plants. At the same time, epigenetic changes were more common in the CHG (C = cytosine, H = cytosine, adenine or thymine, G = guanine) and CHH contexts and favored hypomethylation. There was an increase in the frequency of C to T (thymine) transitions at the CHH positions in the progeny of cold stressed plants; because this type of mutations is often due to the deamination of the methylated cytosines, it can be hypothesized that environment-induced changes in methylation contribute to mutagenesis and may be to microevolution processes and that RNA-dependent DNA methylation plays a crucial role. Our work supports the existence of heritable stress response in plants and demonstrates that genetic changes prevail. Full article
(This article belongs to the Special Issue New Insights in Plant Abiotic Stress)
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Review

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21 pages, 2247 KiB  
Review
Polyploidization: A Biological Force That Enhances Stress Resistance
by Xiaoying Li, Luyue Zhang, Xiaochun Wei, Tanusree Datta, Fang Wei and Zhengqing Xie
Int. J. Mol. Sci. 2024, 25(4), 1957; https://doi.org/10.3390/ijms25041957 - 06 Feb 2024
Viewed by 921
Abstract
Organisms with three or more complete sets of chromosomes are designated as polyploids. Polyploidy serves as a crucial pathway in biological evolution and enriches species diversity, which is demonstrated to have significant advantages in coping with both biotic stressors (such as diseases and [...] Read more.
Organisms with three or more complete sets of chromosomes are designated as polyploids. Polyploidy serves as a crucial pathway in biological evolution and enriches species diversity, which is demonstrated to have significant advantages in coping with both biotic stressors (such as diseases and pests) and abiotic stressors (like extreme temperatures, drought, and salinity), particularly in the context of ongoing global climate deterioration, increased agrochemical use, and industrialization. Polyploid cultivars have been developed to achieve higher yields and improved product quality. Numerous studies have shown that polyploids exhibit substantial enhancements in cell size and structure, physiological and biochemical traits, gene expression, and epigenetic modifications compared to their diploid counterparts. However, some research also suggested that increased stress tolerance might not always be associated with polyploidy. Therefore, a more comprehensive and detailed investigation is essential to complete the underlying stress tolerance mechanisms of polyploids. Thus, this review summarizes the mechanism of polyploid formation, the polyploid biochemical tolerance mechanism of abiotic and biotic stressors, and molecular regulatory networks that confer polyploidy stress tolerance, which can shed light on the theoretical foundation for future research. Full article
(This article belongs to the Special Issue New Insights in Plant Abiotic Stress)
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21 pages, 1816 KiB  
Review
Effects of Heat Stress on Plant-Nutrient Relations: An Update on Nutrient Uptake, Transport, and Assimilation
by Sasmita Mishra, Kim Spaccarotella, Jaclyn Gido, Ishita Samanta and Gopal Chowdhary
Int. J. Mol. Sci. 2023, 24(21), 15670; https://doi.org/10.3390/ijms242115670 - 27 Oct 2023
Cited by 3 | Viewed by 2432
Abstract
As a consequence of global climate change, the frequency, severity, and duration of heat stress are increasing, impacting plant growth, development, and reproduction. While several studies have focused on the physiological and molecular aspects of heat stress, there is growing concern that crop [...] Read more.
As a consequence of global climate change, the frequency, severity, and duration of heat stress are increasing, impacting plant growth, development, and reproduction. While several studies have focused on the physiological and molecular aspects of heat stress, there is growing concern that crop quality, particularly nutritional content and phytochemicals important for human health, is also negatively impacted. This comprehensive review aims to provide profound insights into the multifaceted effects of heat stress on plant-nutrient relationships, with a particular emphasis on tissue nutrient concentration, the pivotal nutrient-uptake proteins unique to both macro- and micronutrients, and the effects on dietary phytochemicals. Finally, we propose a new approach to investigate the response of plants to heat stress by exploring the possible role of plant peroxisomes in the context of heat stress and nutrient mobilization. Understanding these complex mechanisms is crucial for developing strategies to improve plant nutrition and resilience during heat stress. Full article
(This article belongs to the Special Issue New Insights in Plant Abiotic Stress)
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