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Agronomy
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Omics Methods for Probing the Abiotic Stress Responses in Plants
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Omics Methods for Probing the Abiotic Stress Responses in Plants

A special issue of Agronomy (ISSN 2073-4395).

Deadline for manuscript submissions: closed (20 November 2022) | Viewed by 3840

Special Issue Editors

Dr. Víctor Manuel Rodríguez

E-Mail Website
Guest Editor
Misión Biológica de Galicia (CSIC), Carballeira 8, 36143 Salcedo-Pontevedra, Spain
Interests: abiotic stress; metabolomics; transcriptomics
Dr. Pablo Velasco

E-Mail Website
Guest Editor
Misión Biológica de Galicia (CSIC), Carballeira 8, 36143 Salcedo-Pontevedra, Spain
Interests: metabolomics; endophytes; stress resilience
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In the scenario of global climate change, the agricultural sector will have to face great challenges to ensure the availability of food. Agriculture production could be adversely affected by rising temperatures, changes in precipitation patterns and variations in the intensity and frequency of extreme climatic events such as droughts and floods. The metabolic network of plants must be reconfigured under stress conditions to allow both the maintenance of metabolic homeostasis and the production of compounds to cope against the stress. The complexity of the genetic and molecular processes implicated in defense responses against these stresses need to be investigated more extensively. In this concern, information obtained trough 'omics' experiments will enable qualitative and quantitative monitoring of the abundance of various biological molecules in a high-throughput manner. The deep understanding of plants’ resilience mechanisms and their responses to abiotic stresses is of fundamental meaning for the development of resistant crop varieties and more productive and sustainable agriculture.

Dr. Víctor Manuel Rodríguez
Dr. Pablo Velasco
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
  • climate change
  • omics
  • salinity
  • drought
  • cold temperatures

Published Papers (2 papers)

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Research

13 pages, 2204 KiB  
Article
Metabolism Reorganization in Kale (Brassica oleracea L. var acephala) Populations with Divergent Glucosinolate Content under Thermal Stresses
by María Díaz-Urbano, Pablo Velasco, María Elena Cartea and Víctor M. Rodríguez
Agronomy 2022, 12(11), 2652; https://doi.org/10.3390/agronomy12112652 - 27 Oct 2022
Cited by 2 | Viewed by 1383
Abstract
Thermal stress causes the reduction in productivity and harvest quality. To adapt to different temperature ranges, plants activate protecting metabolic pathways. Previous studies have reported that stressful environments due to abiotic stresses have an impact on the accumulation of glucosinolates (GSLs) in Brassicaceae [...] Read more.
Thermal stress causes the reduction in productivity and harvest quality. To adapt to different temperature ranges, plants activate protecting metabolic pathways. Previous studies have reported that stressful environments due to abiotic stresses have an impact on the accumulation of glucosinolates (GSLs) in Brassicaceae plants. In order to determine the role of GSLs in the plant response to thermal stress, we conducted a study comparing four populations with a high and low GSL content. The GSL levels were analysed at different temperatures [control (20), 12 and 32 °C], detecting that populations with a higher GSL content increased their resistance to the cold. In addition, populations subjected to the cold increased the content of indolic GSLs. Populations with high levels of GSLs show higher levels of glucobrassicin (GBS) and sinigrin (SIN) under cold temperatures than plants grown under control conditions. High temperatures have a lower impact on GSLs accumulation. To elucidate the induced metabolic changes due to the accumulation of GSLs under cold conditions, we performed an untargeted metabolomic analysis and identified 25 compounds differentially expressed under cold conditions in the populations with a high GSL content. Almost 50% of these compounds are classified as lipids (fatty amides, monoradylglycerols, diterpenes, glycosylglycerols, linoleic acids and derivatives). Organoheterocyclic and nitrogenous organic compounds are also over-represented. Therefore, the current results suggest that GSLs play a key role in cold tolerance. Although the associated molecular mechanisms have not been elucidated, the non-targeted metabolomics assay shows a significant change in the lipid profile, with compounds that need to be studied further. Full article
(This article belongs to the Special Issue Omics Methods for Probing the Abiotic Stress Responses in Plants)
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19 pages, 2204 KiB  
Article
Insight into the Root Transcriptome of a Boron-Tolerant Triticum zhukovskyi Genotype Grown under Boron Toxicity
by Anamika Pandey, Mohd. Kamran Khan, Mehmet Hamurcu, Marian Brestic, Ali Topal and Sait Gezgin
Agronomy 2022, 12(10), 2421; https://doi.org/10.3390/agronomy12102421 - 6 Oct 2022
Cited by 26 | Viewed by 1916
Abstract
Boron (B) toxicity is an important abiotic stress that drastically damages agricultural production worldwide, mostly in arid regions. Several studies have reported large losses in wheat due to high B in arable land. The identification of different B-toxicity-tolerant wheat germplasm and using them [...] Read more.
Boron (B) toxicity is an important abiotic stress that drastically damages agricultural production worldwide, mostly in arid regions. Several studies have reported large losses in wheat due to high B in arable land. The identification of different B-toxicity-tolerant wheat germplasm and using them in breeding programs to develop tolerant cultivars is a potential solution to B toxicity. However, tolerance to B toxicity in such germplasm largely relies on the molecular changes in plants under B toxicity at the transcriptome level. Thus, the aim of this study is to determine the transcriptomic response of the roots of a B-toxicity-tolerant Triticum zhukovskyi genotype, PI296968, grown in a highly toxic B environment (10 mM B) in comparison with a control (3.1 μM B) treatment. T. zhukovskyi is a hexaploid wheat species forming a separate lineage from the main wheat lineage and can be a good source of genes for various stresses. However, it has been hardly explored for tolerance to any abiotic stress condition. This study is the first in the literature reporting the B toxicity tolerance of a T. zhukovskyi genotype along with the molecular changes occurring in it under B toxicity as compared to the control treatment. In the present study, 5992 genes were found to be significantly differentially expressed, with 1679 and 4313 up- and down-regulated genes, respectively. A number of transcription factors and pathways were identified to be significantly involved in the B toxicity response of the T. zhukovskyi genotype. A total of 12582 novel transcripts were determined in the study, with 9238 and 3344 coding and noncoding transcripts, respectively. The results not only suggest several candidate genes that can be further studied to improve wheat tolerance to B toxicity in upcoming breeding programs, but also enhance the understanding of the regulatory and molecular processes behind the wheat response to B toxicity. Further experiments are suggested to functionally characterize the identified high-B-responsive genes to confirm their role in providing B toxicity tolerance to the plants. Full article
(This article belongs to the Special Issue Omics Methods for Probing the Abiotic Stress Responses in Plants)
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