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Agriculture
Special Issues
Agronomic and Physiological Mechanisms of Crop Responding to Abiotic Stress
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Agronomic and Physiological Mechanisms of Crop Responding to Abiotic Stress

A special issue of Agriculture (ISSN 2077-0472). This special issue belongs to the section "Crop Production".

Deadline for manuscript submissions: closed (10 May 2023) | Viewed by 3007

Special Issue Editors

Dr. Elena Shuyskaya

E-Mail Website
Guest Editor
K.A. Timiryazev Institute of Plant Physiology RAS, IPP RAS, 35 Botanicheskaya St., 127276 Moscow, Russia
Interests: C3 and C4 photosynthesis; photosystems I and II; salt tolerance; water-salts balance; salinity; osmotic stress
Prof. Dr. Kristina Toderich

E-Mail Website
Guest Editor
International Platform for Dryland Research and Education (IPDRE), Tottori University, Tottori 680-0001, Japan
Interests: crop improvement; seed production; abiotic stress tolerance; saline agriculture; food security; salinity stress; drought; drylands
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Climate change and ongoing desertification primarily induce land degradation through soil salinization and water scarcity. Increased global temperatures have intensified drought and soil salinity in arid regions. Previously unaffected regions are now frequently impacted by droughts. In the context of global changes, it is crucial to understand the physiological and biochemical processes of plants and the protective and adaptive strategies that allow them to reproduce and survive under conditions of osmotic stress, ionic toxicity, impaired mineral nutrition, and metabolism. Enhancing the photosynthetic capacity of agricultural crops with a particular focus on CO2/H2O gas exchange, photosystems efficiency, photosynthesis enzyme activity, regulation, and the expression of photosynthetic genes is essential. It is equally important to understand the regulation of water and the water–salt balance in plants under drought and salinity, especially in combination with high temperatures, which can serve as the basis to produce crops with increased adaptability to marginal conditions.

This Special Issue aims to bring together state-of-the-art innovations and papers covering the agronomic and physiological mechanisms of both traditional and alternative/promising crops in response to drought and salinity and/or to these types of stress in combination with high temperatures. Original research articles and reviews are welcome. Especially research in photosynthetic processes, water exchange/water–salt balance, and mineral nutrition studies employing physiological, physicochemical, biochemical, and molecular-genetic approaches.

Dr. Elena Shuyskaya
Prof. Dr. Kristina Toderich
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. Agriculture is an international peer-reviewed open access monthly 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 2600 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 and osmotic stress
  • salinity stress
  • high temperature
  • photosynthesis
  • CO2/H2O gas exchange
  • regulation and expression of photosynthetic genes
  • water–salt balance
  • salts removal capacity
  • mineral nutrition
  • drylands

Published Papers (3 papers)

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Research

16 pages, 3848 KiB  
Article
Parameterization of the Response Function of Sesame to Drought and Salinity Stresses
by Hamed Ebrahimian, Haruyuki Fujimaki and Kristina Toderich
Agriculture 2023, 13(8), 1516; https://doi.org/10.3390/agriculture13081516 - 28 Jul 2023
Viewed by 819
Abstract
In drylands, poor rains combined with high evaporation rates increase the risks of soil salinization in addition to drought stress. Here, we determined the values of the parameters in the Feddes root water uptake function for sesame (Sesamum indicum L.) under drought [...] Read more.
In drylands, poor rains combined with high evaporation rates increase the risks of soil salinization in addition to drought stress. Here, we determined the values of the parameters in the Feddes root water uptake function for sesame (Sesamum indicum L.) under drought and salinity stresses in a pot experiment using “Lebap-55”, which has been bred for the drylands of the Aral Sea Basin but is moderately sensitive to salinity stress. We measured the hourly values of the transpiration, soil moisture, and salinity in the upper and lower soil layers in pots, solar radiation, and root distribution. The values were quantified by two methods. The bulk method uses only daily pot weight data, and the average soil water content and salt concentration are back-calculated from the mass balance. The inverse method uses the monitored values of the soil water content and salinity as well as daily weight data and solar radiation. Both methods could successfully estimate all the parameter values for both stresses. The bulk method performed better under drought stress, even without the measured soil water content or root distribution. It also had satisfactory accuracy in estimating the values under salinity stress. Both methods performed better under drought stress than under salinity stress. The parameter values determined here could be used for irrigation scheduling and salinity management using numerical models for the studied crop. Full article
(This article belongs to the Special Issue Agronomic and Physiological Mechanisms of Crop Responding to Abiotic Stress)
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15 pages, 1819 KiB  
Article
Impact of Salinity, Elevated Temperature, and Their Interaction with the Photosynthetic Efficiency of Halophyte Crop Chenopodium quinoa Willd
by Elena Shuyskaya, Zulfira Rakhmankulova, Maria Prokofieva, Varvara Kazantseva and Nina Lunkova
Agriculture 2023, 13(6), 1198; https://doi.org/10.3390/agriculture13061198 - 04 Jun 2023
Cited by 3 | Viewed by 1468
Abstract
Chenopodium quinoa is a genetically diverse crop that can adapt to a wide range of environments, including temperatures and salinities. However, only a few studies have assessed the combined effects of two or more environmental factors on C. quinoa. Here, we investigated [...] Read more.
Chenopodium quinoa is a genetically diverse crop that can adapt to a wide range of environments, including temperatures and salinities. However, only a few studies have assessed the combined effects of two or more environmental factors on C. quinoa. Here, we investigated the effects of salinity (300 mM NaCl), elevated temperature (35 °C), and their interaction with growth, water–salt balance, the efficiency of photosystem II (PSII), the activity of cyclic electron transport (CET) around photosystem I (PSI), Rubisco and PEPC enzyme content, and the expression of photosynthetic genes. We found that elevated temperature did not decrease the biomass but caused a significant increase in the water and potassium content of C. quinoa leaves. The decrease in PSII efficiency under elevated temperature was accompanied by an increase in the expression of genes encoding the components of PSII (psbA) and linear electron transport (FDI), as well as the main photosynthetic protein Rubisco (rbcL). Moreover, the strongest effect was induced by the combined effect of elevated temperature and salinity, which induced high oxidative stress (a threefold increase in MDA), a threefold decrease in the biomass, a twofold decrease in PSII efficiency, and a two- to eightfold decrease in the expression of the photosynthetic genes psbA, FDI, and rbcL. PSI was more tolerant to all forms of stress; however, the combined effect of elevated temperature and salinity downregulated the expression of PGR5 and FNR1, which may diminish the role of PGR5/PGRL1-dependent CET in favor of the NDH-dependent CET of PSI. The obtained data on the functioning of photosystems and the expression of photosynthetic genes under combined stress (elevated temperature and salinity) can make a significant contribution to understanding the mechanisms of tolerance of C. quinoa to multiple stresses under climate change conditions. Full article
(This article belongs to the Special Issue Agronomic and Physiological Mechanisms of Crop Responding to Abiotic Stress)
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17 pages, 4067 KiB  
Article
Influence of Osmotic, Salt, and Combined Stress on Morphophysiological Parameters of Chenopodium quinoa Photosynthetic Organs
by Nina V. Terletskaya, Malika Erbay, Aigerim N. Zorbekova, Maria Yu Prokofieva, Luizat T. Saidova and Aigerim Mamirova
Agriculture 2023, 13(1), 1; https://doi.org/10.3390/agriculture13010001 - 20 Dec 2022
Cited by 7 | Viewed by 1688
Abstract
Chenopodium quinoa Willd. is an annual facultative halophytic pseudocereal widely studied for its physiology and grain yield owing to its great tolerance to unfavorable growing conditions. However, the morphophysiological and anatomical characteristics of plants’ photosynthetic organs under various and combined abiotic stresses during [...] Read more.
Chenopodium quinoa Willd. is an annual facultative halophytic pseudocereal widely studied for its physiology and grain yield owing to its great tolerance to unfavorable growing conditions. However, the morphophysiological and anatomical characteristics of plants’ photosynthetic organs under various and combined abiotic stresses during the early stages of development have not been thoroughly studied. Therefore, the current study compared the influence of osmotic, salt, and combined stress at different intensities on the morphology and anatomy of photosynthetic organs in young quinoa plants. The main findings demonstrate that salt stress at an intensity between 100 and 200 mM NaCl is not critical for the growth of young quinoa plants and that the young plants can withstand salt stress at an intensity of 300 mM NaCl. However, it can be concluded that some adaptation mechanisms of the plants were already violated at a salt stress intensity of 200 mM NaCl, while significant changes in the water balance of the plants were observed at an intensity of 300 mM NaCl, possibly caused by damage to the cell structures. Full article
(This article belongs to the Special Issue Agronomic and Physiological Mechanisms of Crop Responding to Abiotic Stress)
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