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Agronomy
Special Issues
Crop Improvement towards Abiotic Stresses: Biochemical, Molecular, and Biotechnological Approaches
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Crop Improvement towards Abiotic Stresses: Biochemical, Molecular, and Biotechnological Approaches

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Farming Sustainability".

Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 5433

Special Issue Editors

Dr. Mohd. Kamran Khan

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Guest Editor
Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Selcuk University, Konya, Turkey
Interests: abiotic stress; molecular mechanisms; biochemical responses; breeding; genetic resources; transcriptomics
Prof. Dr. Tofazzal Islam

E-Mail Website
Guest Editor
Institute of Biotechnology and Genetic Engineering (IBGE), Bangabandhu Sheikh Mujibur Rahman Agricultural University, Salna, Gazipur 1706, Bangladesh
Interests: genomics and genome editing; molecular plant–pathogen interactions; biotechnology; molecular diagnosis of fungal phytopathogens
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Sait Gezgin

E-Mail Website
Guest Editor
Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Selcuk University, Konya 42079, Turkey
Interests: plant nutrition; soil management; abiotic stress

Special Issue Information

Dear Colleagues,

Crop development and yield are largely influenced by abiotic stresses, including deficiency in essential nutrients; excessive heavy metals, light, salinity, chilling, and heat; and drought. Global climate change makes it difficult to address these stressful conditions, which increasingly threaten crop productivity and food security. Although plants have their own mechanisms to cope with such challenges, additional external inputs or genetic modifications can improve their adaptability and survival in the changing climate. In recent years, improvements in genetic engineering, genome editing, and the application of biostimulants (such as beneficial probiotic bacteria or fungi) have had substantial impacts on our comprehension of plant defense against abiotic stresses. To maximize the impact of the conducted research, it is essential to focus on the use of molecular, biochemical, and bioengineering-based approaches to mitigate the detrimental effects of abiotic stresses on crop plants and ensure food security in the changing climate.

In this Special Issue, we welcome research and review articles on (but not limited to): plant responses to the following, either alone or combined: heavy metal toxicity, oxidative stresses, nutrient deficiencies, and toxicity, low or high temperature, light intensity, waterlogging, drought, and salinity. We are particularly interested in articles focusing on genome editing, transgenics, and other biorational approaches to mitigating abiotic stresses in crop production. 

Dr. Mohd. Kamran Khan
Prof. Dr. Tofazzal Islam 
Prof. Dr. Sait Gezgin
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. Agronomy 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

  • abiotic stress
  • biochemical mechanism
  • breeding
  • climate change
  • genetic resources
  • molecular mechanism
  • plant adaptation strategies
  • plant–environment interaction
  • signaling
  • stress tolerance
  • transcriptomics
  • genome editing
  • biostimulants

Published Papers (3 papers)

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Research

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14 pages, 1179 KiB  
Article
Proteomic Analysis of Maize Cultivars Tolerant to Drought Stress
by Mariana Cabral Pinto, Odair Honorato de Oliveira, Maria Beatriz Araújo de Oliveira, Cleiton Ribeiro da Silva, Marcela Portela Santos de Figueiredo, Rômulo Gil de Luna, Anielson dos Santos Souza, Lauter Silva Souto, Ancélio Ricardo de Oliveira Godim, Rodolfo Rodrigo de Almeida Lacerda, Andréa Chaves Fiuza Porto, Frank Gomes-Silva, Josimar Mendes de Vasconcelos, Guilherme Rocha Moreira, Maria Lindomárcia Leonardo da Costa, Mércia Regina Pereira de Figueiredo, Fabiana Aparecida Cavalcante Silva, Francisco Cássio Gomes Alvino, Amaro Epifânio Pereira Silva, Leonardo de Sousa Alves, Diogo Gonçalves Neder, Bianca Galúcio Pereira Araújo, Lucas Carvalho de Freitas, Tercilio Calsa Junior and João de Andrade Dutra Filhoadd Show full author list remove Hide full author list
Agronomy 2023, 13(8), 2186; https://doi.org/10.3390/agronomy13082186 - 21 Aug 2023
Viewed by 1184
Abstract
Maize is a crop of significant economic importance. In the northeast region of Brazil, it serves as the foundation of family support for the majority of farmers. However, achieving high levels of productivity requires an adequate water supply throughout its growth cycle. The [...] Read more.
Maize is a crop of significant economic importance. In the northeast region of Brazil, it serves as the foundation of family support for the majority of farmers. However, achieving high levels of productivity requires an adequate water supply throughout its growth cycle. The northeast semi-arid region experiences low rainfall and high potential evapotranspiration, directly affecting maize development and leading to severe declines in productivity. In this study, genetic selection and proteomic analysis are proposed as a strategy to identify the tolerance of maize cultivars against water stress. The experiments were conducted under two water regimes using randomized block designs with three replicates. Development and productivity traits were evaluated, and genetic parameters were estimated using mixed linear models. Selection for water stress tolerance was based on the harmonic mean of the relative performance of genotypic values. Total protein extraction from maize leaves followed the protocol established by the phenol method, and peptides were analyzed through mass spectrometry. The AG8677P cultivar demonstrated remarkable productivity under drought stress conditions, and proteins related to various fundamentally important biological processes for the tolerance mechanism were identified. The combination of genetic selection with proteomic analysis proves to be an efficient strategy, even in the face of limited resources and a small number of treatments. Full article
(This article belongs to the Special Issue Crop Improvement towards Abiotic Stresses: Biochemical, Molecular, and Biotechnological Approaches)
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18 pages, 1836 KiB  
Article
Insight into the Boron Toxicity Stress-Responsive Genes in Boron-Tolerant Triticum dicoccum Shoots Using RNA Sequencing
by Mohd. Kamran Khan, Anamika Pandey, Mehmet Hamurcu, Vijay Rani Rajpal, Tomas Vyhnanek, Ali Topal, Soom Nath Raina and Sait Gezgin
Agronomy 2023, 13(3), 631; https://doi.org/10.3390/agronomy13030631 - 22 Feb 2023
Cited by 5 | Viewed by 1536
Abstract
Wheat production losses due to boron (B) toxicity can be reduced by breeding and growing modern wheat cultivars with a greater tolerance to high B. However, breeding of tolerant genotypes is possible by identifying B-tolerant wheat genetic resources and understanding their underlying molecular [...] Read more.
Wheat production losses due to boron (B) toxicity can be reduced by breeding and growing modern wheat cultivars with a greater tolerance to high B. However, breeding of tolerant genotypes is possible by identifying B-tolerant wheat genetic resources and understanding their underlying molecular mechanism. Triticum dicoccum, despite being one of the oldest cultivated wheat species, mostly remained neglected and has been less explored for its potential towards abiotic stresses. In this study, for the first time, we report a B-toxicity-tolerant T. dicoccum genotype, PI94655, and its transcriptomic response towards high-B treatment (10 mM B) using RNA sequencing and RT-qPCR. More than 450 genes were significantly differentially expressed in the shoots of PI94655 under high B. A total 3237 novel genes and 12,206 novel transcripts were determined in the study. AP2-EREBP, MYB, and C3H were the families with the highest percentages of differentially expressed transcription factors (TFs) under B toxicity. Interestingly, KEGG pathway photosynthesis–antenna proteins showed the most significant enrichment. The obtained results suggested potential candidate genes that can be focused on to improve wheat tolerance to high B in future breeding programs. These genes can be functionally characterized to elucidate their role in providing tolerance to high B. Full article
(This article belongs to the Special Issue Crop Improvement towards Abiotic Stresses: Biochemical, Molecular, and Biotechnological Approaches)
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Review

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33 pages, 1336 KiB  
Review
Role of Exogenous Nitric Oxide in Protecting Plants against Abiotic Stresses
by Anamika Pandey, Mohd. Kamran Khan, Mehmet Hamurcu, Tabinda Athar, Bayram Ali Yerlikaya, Seher Yerlikaya, Musa Kavas, Anjana Rustagi, Sajad Majeed Zargar, Parvaze A. Sofi, Bharti Chaudhry, Ali Topal and Sait Gezgin
Agronomy 2023, 13(5), 1201; https://doi.org/10.3390/agronomy13051201 - 24 Apr 2023
Cited by 2 | Viewed by 2071
Abstract
The continuously changing environment has led to devastating effects on the normal growth and development of plants. This necessitates the understanding of different components that can be involved in alleviating these effects. In the last two decades, nitric oxide (NO) has been largely [...] Read more.
The continuously changing environment has led to devastating effects on the normal growth and development of plants. This necessitates the understanding of different components that can be involved in alleviating these effects. In the last two decades, nitric oxide (NO) has been largely focused on as a molecule whose endogenous production and exogenous supply lead to several molecular and physiological changes in plants under stressed conditions. Although its role as a signaling molecule in endogenous production has been largely discussed, its function in dealing with contemporary abiotic stress conditions on exogenous supply remains comparatively less explored. There is growing evidence that NO plays a critical role in many physiological processes; however, there is debate about the exact mechanism(s) through which NO lessens abiotic stress on external supply. In this review, we discuss the studies that were focused on observing the effect of exogenous NO on different abiotic stresses including heavy metal stress, element deficiency or toxicity stress, salt stress, drought stress, ultraviolet radiation stress, waterlogging stress, and chilling stress. Though the positive effects of endogenous NO have been discussed in brief in different sections, the focus of the review is to discuss the effects of exogenous NO on plant grown under abiotic stresses. Deciphering the underlying mechanism of exogenous NO treatment may open up new ideas that can suggest the successful application of NO in agricultural regions to reduce the damaging influences of different abiotic stresses. Full article
(This article belongs to the Special Issue Crop Improvement towards Abiotic Stresses: Biochemical, Molecular, and Biotechnological Approaches)
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