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Recent Advances in Abiotic Stress Tolerance in Plants: An Integrative...
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Recent Advances in Abiotic Stress Tolerance in Plants: An Integrative Approach

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Response to Abiotic Stress and Climate Change".

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 7858

Special Issue Editors

Dr. Sasmita Mishra

E-Mail Website
Guest Editor
Department of Biology, School of Natural Sciences, Kean University, 1000 Morris Avenue, Union, NJ 07083, USA
Interests: abiotic stress; plant–nutrient relations; molecular markers; plant–microbe interaction
Special Issues, Collections and Topics in MDPI journals
Dr. Brian W. Teasdale

E-Mail Website
Guest Editor
Biological Sciences, School of Natural Sciences, Kean University,1000 Morris Avenue, Union, NJ 07083, USA
Interests: plant biology; molecular systematics; phycology; marine ecology; photosynthesis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Abiotic stresses such as drought, heat, and saline stresses are the main constraints for plants and crop production worldwide. Due to global climate change, the intensity of extreme abiotic stress events of drought, extreme temperatures (abrupt heat stress), and salinity are expected to be more frequent. These stress conditions adversely affect crop quality, decreasing the rate of photosynthesis and nutrient uptake and ultimately reducing the yield. Responses of plants to these stresses have been extensively studied; however, much needs to be done in order to achieve stress-tolerant crop cultivars. Recent advancements in ‘omic’ approaches and molecular-marker-based studies are giving more insight into stress tolerance in plants, which is critical in improving stress tolerance in crops and global crop quality. Further, the involvement of small organelles such as peroxisomes in abiotic stress tolerance has long been ignored and needs to be considered.

This Special Issue of Plants highlights the plant response to the mechanisms of drought, heat, and saline stress tolerance in plants. Scientists from all over the world are invited to submit original research articles with high novelty and hypothesis-driven results or review articles on abiotic stress tolerance focusing on drought, heat, and salt stress tolerance in plants. 

Dr. Sasmita Mishra
Dr. Brian W. Teasdale
Guest Editors

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. Plants is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). 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

  • drought stresses
  • heat stresses
  • saline stress
  • peroxisome in abiotic stress
  • plant–nutrient relations

Published Papers (4 papers)

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Research

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25 pages, 5160 KiB  
Article
A Novel Nutrient- and Antioxidant-Based Formulation Can Sustain Tomato Production under Full Watering and Drought Stress in Saline Soil
by Taia A. Abd El-Mageed, Radwa Ihab, Mostafa M. Rady, Hussein E. E. Belal, Fatma A. Mostafa, Tarek M. Galal, Luluah M. Al Masoudi, Esmat F. Ali, Maria Roulia and Amr E. M. Mahmoud
Plants 2023, 12(19), 3407; https://doi.org/10.3390/plants12193407 - 27 Sep 2023
Viewed by 1269
Abstract
As a result of the climate changes that are getting worse nowadays, drought stress (DS) is a major obstacle during crop life stages, which ultimately reduces tomato crop yields. So, there is a need to adopt modern approaches like a novel nutrient- and [...] Read more.
As a result of the climate changes that are getting worse nowadays, drought stress (DS) is a major obstacle during crop life stages, which ultimately reduces tomato crop yields. So, there is a need to adopt modern approaches like a novel nutrient- and antioxidant-based formulation (NABF) for boosting tomato crop productivity. NABF consists of antioxidants (i.e., citric acid, salicylic acid, ascorbic acid, glutathione, and EDTA) and nutrients making it a fruitful growth stimulator against environmental stressors. As a first report, this study was scheduled to investigate the foliar application of NABF on growth and production traits, physio-biochemical attributes, water use efficiency (WUE), and nutritional, hormonal, and antioxidative status of tomato plants cultivated under full watering (100% of ETc) and DS (80 or 60% of ETc). Stressed tomato plants treated with NABF had higher DS tolerance through improved traits of photosynthetic efficiency, leaf integrity, various nutrients (i.e., copper, zinc, manganese, calcium, potassium, phosphorus, and nitrogen), and hormonal contents. These positives were a result of lower levels of oxidative stress biomarkers as a result of enhanced osmoprotectants (soluble sugars, proline, and soluble protein), and non-enzymatic and enzymatic antioxidant activities. Growth, yield, and fruit quality traits, as well as WUE, were improved. Full watering with application of 2.5 g NABF L−1 collected 121 t tomato fruits per hectare as the best treatment. Under moderate DS (80% of ETc), NABF application increased fruit yield by 10.3%, while, under severe DS (40% of ETc), the same fruit yield was obtained compared to full irrigation without NABF. Therefore, the application of 60% ETc × NABF was explored to not only give a similar yield with higher quality compared to 100% ETc without NABF as well as increase WUE. Full article
(This article belongs to the Special Issue Recent Advances in Abiotic Stress Tolerance in Plants: An Integrative Approach)
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19 pages, 3353 KiB  
Article
Functional Dissection of the Physiological Traits Promoting Durum Wheat (Triticum durum Desf.) Tolerance to Drought Stress
by Salim Ltaief and Abdelmajid Krouma
Plants 2023, 12(7), 1420; https://doi.org/10.3390/plants12071420 - 23 Mar 2023
Cited by 3 | Viewed by 1160
Abstract
In Tunisia’s arid and semi-arid lands, drought stress remains the most critical factor limiting agricultural production due to low and irregular precipitation. The situation is even more difficult because of the scarcity of underground water for irrigation and the climate change that has [...] Read more.
In Tunisia’s arid and semi-arid lands, drought stress remains the most critical factor limiting agricultural production due to low and irregular precipitation. The situation is even more difficult because of the scarcity of underground water for irrigation and the climate change that has intensified and expanded the aridity. One of the most efficient and sustainable approaches to mitigating drought stress is exploring genotypic variability to screen tolerant genotypes and identify useful tolerance traits. To this end, six Tunisian wheat genotypes (Triticum durum Desf.) were cultivated in the field, under a greenhouse and natural light, to be studied for their differential tolerance to drought stress. Many morpho-physiological and biochemical traits were analyzed, and interrelationships were established. Depending on the genotypes, drought stress significantly decreased plant growth, chlorophyll biosynthesis, and photosynthesis; stimulated osmolyte accumulation and disturbed water relations. The most tolerant genotypes (salim and karim) accumulated more potassium (K) and proline in their shoots, allowing them to maintain better tissue hydration and physiological functioning. The osmotic adjustment (OA), in which potassium and proline play a key role, determines wheat tolerance to drought stress. The calculated drought index (DI), drought susceptible index (DSI), drought tolerance index (DTI), K use efficiency (KUE), and water use efficiency (WUE) discriminated the studied genotypes and confirmed the relative tolerance of salim and karim. Full article
(This article belongs to the Special Issue Recent Advances in Abiotic Stress Tolerance in Plants: An Integrative Approach)
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14 pages, 2478 KiB  
Article
Short-Term Exposure of Dactylis glomerata Pollen to Atmospheric Gaseous Pollutants Is Related to an Increase in IgE Binding in Patients with Grass Pollen Allergies
by María Fernández-González, Helena Ribeiro, Fco. Javier Rodríguez-Rajo, Ana Cruz and Ilda Abreu
Plants 2023, 12(1), 76; https://doi.org/10.3390/plants12010076 - 23 Dec 2022
Cited by 2 | Viewed by 2197
Abstract
The concentrations of nitrogen dioxide (NO2) and tropospheric ozone (O3) in urban and industrial site atmospheres are considered key factors associated with pollen-related respiratory allergies. This work studies the effects of NO2 and O3 on the protein [...] Read more.
The concentrations of nitrogen dioxide (NO2) and tropospheric ozone (O3) in urban and industrial site atmospheres are considered key factors associated with pollen-related respiratory allergies. This work studies the effects of NO2 and O3 on the protein expression profile and IgE binding in patients with grass allergies to Dactylis glomerata pollen extracts. Pollens were collected during the flowering season and were exposed to NO2 and O3 in a controlled environmental chamber. The amount of soluble protein was examined using the Bradford method, and the protein expression profile and antigenic properties were analysed using the immunoblotting and enzyme-linked immunosorbent assay (ELISA), respectively. Our results showed apparent inter-sera differences concerning the number and intensity of IgE reactivity, with the most prominent at bands of 55 kDa, 35, 33, and 13 kDa. In the 13 kDa band, both gases tend to induce an increase in IgE binding, the band at 33 kDa showed a tendency towards a reduction, particularly pollen exposed to O3. Reactive bands at 55 and 35 kDa presented an increase in the IgE binding pattern for all the patient sera samples exposed to NO2, but the samples exposed to O3 showed an increase in some sera and in others a decrease. Regarding the ELISA results, out of the 21 tested samples, only 9 showed a statistically significant increase in total IgE reactivity after pollen exposure to the pollutants. Our study revealed that although airborne pollen allergens might be affected by air pollution, the possible impacts on allergy symptoms might vary depending on the type of pollutant and the patient’s sensitisation profile. Full article
(This article belongs to the Special Issue Recent Advances in Abiotic Stress Tolerance in Plants: An Integrative Approach)
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Review

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21 pages, 2074 KiB  
Review
Plant Peroxisomal Polyamine Oxidase: A Ubiquitous Enzyme Involved in Abiotic Stress Tolerance
by Ishita Samanta, Pamela Chanda Roy, Eshani Das, Sasmita Mishra and Gopal Chowdhary
Plants 2023, 12(3), 652; https://doi.org/10.3390/plants12030652 - 1 Feb 2023
Cited by 3 | Viewed by 2250
Abstract
Polyamines (PAs) are positively charged amines that are present in all organisms. In addition to their functions specific to growth and development, they are involved in responding to various biotic and abiotic stress tolerance functions. The appropriate concentration of PA in the cell [...] Read more.
Polyamines (PAs) are positively charged amines that are present in all organisms. In addition to their functions specific to growth and development, they are involved in responding to various biotic and abiotic stress tolerance functions. The appropriate concentration of PA in the cell is maintained by a delicate balance between the catabolism and anabolism of PAs, which is primarily driven by two enzymes, namely diamine oxidase and polyamine oxidase (PAO). PAOs have been found to be localized in multiple subcellular locations, including peroxisomes. This paper presents a holistic account of peroxisomal PAOs. PAOs are flavin adenine dinucleotide-dependent enzymes with varying degrees of substrate specificity. They are expressed differentially upon various abiotic stress conditions, namely heat, cold, salinity, and dehydration. It has also been observed that in a particular species, the various PAO isoforms are expressed differentially with a spatial and temporal distinction. PAOs are targeted to peroxisome via a peroxisomal targeting signal (PTS) type 1. We conducted an extensive bioinformatics analysis of PTS1s present in various peroxisomal PAOs and present a consensus peroxisome targeting signal present in PAOs. Furthermore, we also propose an evolutionary perspective of peroxisomal PAOs. PAOs localized in plant peroxisomes are of potential importance in abiotic stress tolerance since peroxisomes are one of the nodal centers of reactive oxygen species (ROS) homeostasis and an increase in ROS is a major indicator of the plant being in stress conditions; hence, in the future, PAO enzymes could be used as a key candidate for generating abiotic stress tolerant crops. Full article
(This article belongs to the Special Issue Recent Advances in Abiotic Stress Tolerance in Plants: An Integrative Approach)
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