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Metal Stress in Plants, 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 (15 March 2024) | Viewed by 3275

Special Issue Editor


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Guest Editor
Department of Biology and Plant Ecology, Faculty of Biology, University of Bialystok, Bialystok, Poland
Interests: adaptation to heavy metal stress; brassinosteroids; phytoecdysteroids; phytohormones
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Special Issue Information

Dear Colleagues,

This Special Issue follows the publication of the first edition of Special Issue "Metal Stress in Plants".

Metals such as Fe, Mn, Cu, Ni, Co, Cd, Zn, Hg, arsenic, and aluminum are important environmental pollutants, particularly in areas with high anthropogenic activity. On the one hand, deficiency of some of these metals that are essential micronutrients results in adverse effects on plant growth and development. On the other hand, their excessive accumulation in soil can not only have direct impacts on plant growth, metabolism, physiology, and senescence but also threaten human health via the food chain following their excessive accumulation in the edible parts of crops. Therefore, the understanding of how plants respond to metal stress, including both deficiency and toxicity, is of great importance for improving plant productivity and quality in these metal-stressed areas, as well as for phytoremediation of contaminated environments.

As Guest Editor of the “Metal Stress in Plants” Special Issue of IJMS, I would like to invite you to contribute a paper covering metal stress in plants at the biochemical, physiological, molecular, genetic, or epigenetic levels. Submissions describing biotechnology that aims to improve plant adaptation to metal stress and remediation of soils are also welcome.

Dr. Andrzej Bajguz
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

  • gene expression
  • genetic manipulation
  • heavy metal
  • mitigation
  • oxidative stress
  • phytoremediation
  • signal transduction
  • transporter

Published Papers (3 papers)

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Research

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24 pages, 3383 KiB  
Article
An Innovative Approach to Alleviate Zinc Oxide Nanoparticle Stress on Wheat through Nanobubble Irrigation
by Feng Zhang, Shuxin Li, Lichun Wang and Xiangnan Li
Int. J. Mol. Sci. 2024, 25(3), 1896; https://doi.org/10.3390/ijms25031896 - 5 Feb 2024
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Abstract
The extensive utilization of zinc oxide nanoparticles in consumer products and the industry has led to their substantial entry into the soil through air and surface runoff transportation, which causes ecotoxicity in agro-ecosystems and detrimental effects on crop production. Nanobubbles (diameter size < [...] Read more.
The extensive utilization of zinc oxide nanoparticles in consumer products and the industry has led to their substantial entry into the soil through air and surface runoff transportation, which causes ecotoxicity in agro-ecosystems and detrimental effects on crop production. Nanobubbles (diameter size < 1 µm) have many advantages, such as a high surface area, rapid mass transfer, and long retention time. In this study, wheat seedlings were irrigated with a 500 mg L−1 zinc oxide nanoparticle solution delivered in the form of nanobubble watering (nanobubble-ZnO-NPs). We found that nanobubble watering improved the growth and nutrient status of wheat exposed to zinc oxide nanoparticles, as evidenced by increased total foliar nitrogen and phosphorus, along with enhanced leaf dry mass per area. This effect can be attributed to nanobubbles disassembling zinc oxide aggregates formed due to soil organic carbon, thereby mitigating nutrient absorption limitations in plants. Furthermore, nanobubbles improved the capability of soil oxygen input, leading to increased root activity and glycolysis efficiency in wheat roots. This work provides valuable insights into the influence of nanobubble watering on soil quality and crop production and offers an innovative approach for agricultural irrigation that enhances the effectiveness and efficiency of water application. Full article
(This article belongs to the Special Issue Metal Stress in Plants, 2nd Edition)
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17 pages, 5191 KiB  
Article
Genome-Wide Identification and Expression Profiling of Heavy Metal ATPase (HMA) Genes in Peanut: Potential Roles in Heavy Metal Transport
by Jinxiu Li, Zheng Zhang and Gangrong Shi
Int. J. Mol. Sci. 2024, 25(1), 613; https://doi.org/10.3390/ijms25010613 - 3 Jan 2024
Viewed by 971
Abstract
The heavy metal ATPase (HMA) family belongs to the P-type ATPase superfamily and plays an essential role in the regulation of metal homeostasis in plants. However, the gene family has not been fully investigated in peanut. Here, a genome-wide identification and bioinformatics analysis [...] Read more.
The heavy metal ATPase (HMA) family belongs to the P-type ATPase superfamily and plays an essential role in the regulation of metal homeostasis in plants. However, the gene family has not been fully investigated in peanut. Here, a genome-wide identification and bioinformatics analysis was performed on AhHMA genes in peanut, and the expression of 12 AhHMA genes in response to Cu, Zn, and Cd was evaluated in two peanut cultivars (Silihong and Fenghua 1) differing in Cd accumulation. A total of 21 AhHMA genes were identified in the peanut genome, including ten paralogous gene pairs derived from whole-genome duplication, and an additional gene resulting from tandem duplication. AhHMA proteins could be divided into six groups (I–VI), belonging to two clades (Zn/Co/Cd/Pb-ATPases and Cu/Ag-ATPases). Most AhHMA proteins within the same clade or group generally have a similar structure. However, significant divergence exists in the exon/intron organization even between duplicated gene pairs. RNA-seq data showed that most AhHMA genes are preferentially expressed in roots, shoots, and reproductive tissues. qRT-PCR results revealed that AhHMA1.1/1.2, AhHMA3.1/3.2, AhHMA7.1/7.4, and AhHMA8.1 might be involved in Zn transport in peanut plants, while AhHMA3.2 and AhHMA7.5 might be involved in Cd transport. Our findings provide clues to further characterize the functions of AhHMA genes in metal uptake and translocation in peanut plants. Full article
(This article belongs to the Special Issue Metal Stress in Plants, 2nd Edition)
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Review

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36 pages, 3729 KiB  
Review
The Molecular Mechanism of the Response of Rice to Arsenic Stress and Effective Strategies to Reduce the Accumulation of Arsenic in Grain
by Anjing Geng, Wenli Lian, Yihan Wang, Minghao Liu, Yue Zhang, Xu Wang and Guang Chen
Int. J. Mol. Sci. 2024, 25(5), 2861; https://doi.org/10.3390/ijms25052861 - 1 Mar 2024
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Abstract
Rice (Oryza sativa L.) is the staple food for more than 50% of the world’s population. Owing to its growth characteristics, rice has more than 10-fold the ability to enrich the carcinogen arsenic (As) than other crops, which seriously affects world food [...] Read more.
Rice (Oryza sativa L.) is the staple food for more than 50% of the world’s population. Owing to its growth characteristics, rice has more than 10-fold the ability to enrich the carcinogen arsenic (As) than other crops, which seriously affects world food security. The consumption of rice is one of the primary ways for humans to intake As, and it endangers human health. Effective measures to control As pollution need to be studied and promoted. Currently, there have been many studies on reducing the accumulation of As in rice. They are generally divided into agronomic practices and biotechnological approaches, but simultaneously, the problem of using the same measures to obtain the opposite results may be due to the different species of As or soil environments. There is a lack of systematic discussion on measures to reduce As in rice based on its mechanism of action. Therefore, an in-depth understanding of the molecular mechanism of the accumulation of As in rice could result in accurate measures to reduce the content of As based on local conditions. Different species of As have different toxicity and metabolic pathways. This review comprehensively summarizes and reviews the molecular mechanisms of toxicity, absorption, transport and redistribution of different species of As in rice in recent years, and the agronomic measures to effectively reduce the accumulation of As in rice and the genetic resources that can be used to breed for rice that only accumulates low levels of As. The goal of this review is to provide theoretical support for the prevention and control of As pollution in rice, facilitate the creation of new types of germplasm aiming to develop without arsenic accumulation or within an acceptable limit to prevent the health consequences associated with heavy metal As as described here. Full article
(This article belongs to the Special Issue Metal Stress in Plants, 2nd Edition)
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