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Stomatal Activities in Abiotic Stress Tolerant Wild Relatives of Crop
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Stomatal Activities in Abiotic Stress Tolerant Wild Relatives of Crop

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Crop Physiology and Crop Production".

Deadline for manuscript submissions: closed (20 June 2023) | Viewed by 19236

Special Issue Editors

Dr. Chenchen Zhao

E-Mail Website
Guest Editor
Tasmanian Institute of Agriculture, University of Tasmania, Launceston, TAS 7250, Australia
Interests: ABA signaling; abiotic stress; stomata
Special Issues, Collections and Topics in MDPI journals
Dr. Tony Haigh

E-Mail Website
Guest Editor
School of Science, Western Sydney University, Hawkesbury, NSW 2753, Australia
Interests: crop management; horticulture; stomatal signalling
Dr. Michelle Mak

E-Mail Website
Guest Editor
School of Science, Western Sydney University, Hawkesbury, NSW 2753, Australia
Interests: horticulture; abiotic stresses; agricultural plant science
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Stomatal regulations are important for plant abiotic stress tolerance. Stomata are found to play vital roles in abiotic stresses, especially for drought. However, for other abiotic stresses, typically for salinity, waterlogging, etc., whether/how stomatal regulations affect plant tolerance needs to be investigated more, and this is precisely the main motivation for setting up this proposed Special Issue calling for studies on stomatal regulations. Wild crops/mutants are valuable resources, offering ample germplasm for studying abiotic stress mechanisms under specific environmental stresses. Extracting mechanisms in crop-like plants for fighting against abiotic stresses could be more practical for modifying/producing elite pre-breeding materials. This Special Issue of Plants will highlight the physiological and molecular mechanism in regulating stomatal activities in tolerant plants. Additionally, the importance of utilizing wild crop resources/mutants is emphasized. We are looking for studies involving stomatal regulations under any environmental stresses.

Dr. Chenchen Zhao
Dr. Tony Haigh
Dr. Michelle Mak
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

  • stomatal regulations
  • abiotic stresses
  • wild crops
  • mutants
  • drought
  • salinity

Published Papers (5 papers)

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Research

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21 pages, 3339 KiB  
Article
A Comparison of Different Stomatal Density Phenotypes of Hordeum vulgare under Varied Watering Regimes Reveals Superior Genotypes with Enhanced Drought Tolerance
by Brittany Clare Robertson, Yong Han and Chengdao Li
Plants 2023, 12(15), 2840; https://doi.org/10.3390/plants12152840 - 01 Aug 2023
Cited by 2 | Viewed by 1054
Abstract
Enhancing the water-use efficiency (WUE) of barley cultivars may safeguard yield deficits during periods of low rainfall. Reduced stomatal density is linked to enhanced WUE, leading to improved drought resistance across plant genera. In this study, 10 barley varieties exhibiting a range of [...] Read more.
Enhancing the water-use efficiency (WUE) of barley cultivars may safeguard yield deficits during periods of low rainfall. Reduced stomatal density is linked to enhanced WUE, leading to improved drought resistance across plant genera. In this study, 10 barley varieties exhibiting a range of stomatal density phenotypes were grown under differing soil water contents to determine whether stomatal density influences the capacity of genotypes to resist low water availability. The low-stomatal-density genotype Hindmarsh showed the least impact on biomass production during early development, with a 37.13% decrease in dry biomass during drought treatment. Low-stomatal-density genotypes additionally outcompeted high-stomatal-density genotypes under water-deprivation conditions during the reproductive phase of development, exhibiting 19.35% greater wilting resistance and generating 54.62% more heads relative to high-stomatal-density genotypes (p < 0.05). Finally, a correlation analysis revealed a strong negative linear relationship between stomatal density and the traits of head number (r = −0.71) and the number of days until wilting symptoms (r = −0.67) (p < 0.05). The combined results indicate that low-stomatal-density genotypes show promising attributes for high WUE, revealing novel barley varieties that may be useful to future breed improvement for drought tolerance. Full article
(This article belongs to the Special Issue Stomatal Activities in Abiotic Stress Tolerant Wild Relatives of Crop)
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17 pages, 2879 KiB  
Article
Combinational Variation Temperature and Soil Water Response of Stomata and Biomass Production in Maize, Millet, Sorghum and Rice
by Phanthasin Khanthavong, Shin Yabuta, Al Imran Malik, Md Amzad Hossain, Isao Akagi and Jun-Ichi Sakagami
Plants 2022, 11(8), 1039; https://doi.org/10.3390/plants11081039 - 11 Apr 2022
Cited by 4 | Viewed by 2232
Abstract
Environmental responses of stomatal conductance (gs) as basic information for a photosynthesis-transpiration-coupled model have been increasing under global warming. This study identified the impact of gs behavior under different soil water statuses and temperatures in rice, maize, millet, and sorghum. The [...] Read more.
Environmental responses of stomatal conductance (gs) as basic information for a photosynthesis-transpiration-coupled model have been increasing under global warming. This study identified the impact of gs behavior under different soil water statuses and temperatures in rice, maize, millet, and sorghum. The experiments consisted of various soil moisture statuses from flooding to drying and combination of soil moisture status and temperature. There was a reduction in shoot biomass of maize and sorghum caused by decreasing of gs, photosynthesis (A), and transpiration (E) in early imposed waterlogging without dependent temperature, whereas millet and rice were dependent on temperature variation. The effect of gradual soil drying, gs, A, and E of maize, millet, and sorghum were caused by low temperature, except rice. The impact of the combination of various soil water statuses and temperatures on gs is important for the trade-off between A and E, and consequently shoot biomass. However, we discovered that an ability to sustain gs is essential for photo assimilation and maintaining leaf temperature through evapotranspiration for biomass production, a mechanism of crop avoidance in variable soil water status and temperature. Full article
(This article belongs to the Special Issue Stomatal Activities in Abiotic Stress Tolerant Wild Relatives of Crop)
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Review

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29 pages, 1926 KiB  
Review
Phosphorus Plays Key Roles in Regulating Plants’ Physiological Responses to Abiotic Stresses
by Fahad Khan, Abu Bakar Siddique, Sergey Shabala, Meixue Zhou and Chenchen Zhao
Plants 2023, 12(15), 2861; https://doi.org/10.3390/plants12152861 - 03 Aug 2023
Cited by 21 | Viewed by 8531
Abstract
Phosphorus (P), an essential macronutrient, plays a pivotal role in the growth and development of plants. However, the limited availability of phosphorus in soil presents significant challenges for crop productivity, especially when plants are subjected to abiotic stresses such as drought, salinity and [...] Read more.
Phosphorus (P), an essential macronutrient, plays a pivotal role in the growth and development of plants. However, the limited availability of phosphorus in soil presents significant challenges for crop productivity, especially when plants are subjected to abiotic stresses such as drought, salinity and extreme temperatures. Unraveling the intricate mechanisms through which phosphorus participates in the physiological responses of plants to abiotic stresses is essential to ensure the sustainability of agricultural production systems. This review aims to analyze the influence of phosphorus supply on various aspects of plant growth and plant development under hostile environmental conditions, with a special emphasis on stomatal development and operation. Furthermore, we discuss recently discovered genes associated with P-dependent stress regulation and evaluate the feasibility of implementing P-based agricultural practices to mitigate the adverse effects of abiotic stress. Our objective is to provide molecular and physiological insights into the role of P in regulating plants’ tolerance to abiotic stresses, underscoring the significance of efficient P use strategies for agricultural sustainability. The potential benefits and limitations of P-based strategies and future research directions are also discussed. Full article
(This article belongs to the Special Issue Stomatal Activities in Abiotic Stress Tolerant Wild Relatives of Crop)
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19 pages, 864 KiB  
Review
How Does Stomatal Density and Residual Transpiration Contribute to Osmotic Stress Tolerance?
by Md. Hasanuzzaman, Meixue Zhou and Sergey Shabala
Plants 2023, 12(3), 494; https://doi.org/10.3390/plants12030494 - 21 Jan 2023
Cited by 14 | Viewed by 4307
Abstract
Osmotic stress that is induced by salinity and drought affects plant growth and development, resulting in significant losses to global crop production. Consequently, there is a strong need to develop stress-tolerant crops with a higher water use efficiency through breeding programs. Water use [...] Read more.
Osmotic stress that is induced by salinity and drought affects plant growth and development, resulting in significant losses to global crop production. Consequently, there is a strong need to develop stress-tolerant crops with a higher water use efficiency through breeding programs. Water use efficiency could be improved by decreasing stomatal transpiration without causing a reduction in CO2 uptake under osmotic stress conditions. The genetic manipulation of stomatal density could be one of the most promising strategies for breeders to achieve this goal. On the other hand, a substantial amount of water loss occurs across the cuticle without any contribution to carbon gain when the stomata are closed and under osmotic stress. The minimization of cuticular (otherwise known as residual) transpiration also determines the fitness and survival capacity of the plant under the conditions of a water deficit. The deposition of cuticular wax on the leaf epidermis acts as a limiting barrier for residual transpiration. However, the causal relationship between the frequency of stomatal density and plant osmotic stress tolerance and the link between residual transpiration and cuticular wax is not always straightforward, with controversial reports available in the literature. In this review, we focus on these controversies and explore the potential physiological and molecular aspects of controlling stomatal and residual transpiration water loss for improving water use efficiency under osmotic stress conditions via a comparative analysis of the performance of domesticated crops and their wild relatives. Full article
(This article belongs to the Special Issue Stomatal Activities in Abiotic Stress Tolerant Wild Relatives of Crop)
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12 pages, 947 KiB  
Review
Advances in the Genetic Basis and Molecular Mechanism of Lesion Mimic Formation in Rice
by Jiajie Yan, Yunxia Fang and Dawei Xue
Plants 2022, 11(16), 2169; https://doi.org/10.3390/plants11162169 - 21 Aug 2022
Cited by 3 | Viewed by 1907
Abstract
Plant lesion mutation usually refers to the phenomenon of cell death in green tissues before senescence in the absence of external stress, and such mutants also show enhanced resistance to some plant pathogens. The occurrence of lesion mimic mutants in rice is affected [...] Read more.
Plant lesion mutation usually refers to the phenomenon of cell death in green tissues before senescence in the absence of external stress, and such mutants also show enhanced resistance to some plant pathogens. The occurrence of lesion mimic mutants in rice is affected by gene mutation, reactive oxygen species accumulation, an uncontrolled programmed cell death system, and abiotic stress. At present, many lesion mimic mutants have been identified in rice, and some genes have been functionally analyzed. This study reviews the occurrence mechanism of lesion mimic mutants in rice. It analyzes the function of rice lesion mimic mutant genes to elucidate the molecular regulation pathways of rice lesion mimic mutants in regulating plant disease resistance. Full article
(This article belongs to the Special Issue Stomatal Activities in Abiotic Stress Tolerant Wild Relatives of Crop)
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