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Metabolites
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Metabolism of Plant Secondary Metabolites under Stress Conditions
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Metabolism of Plant Secondary Metabolites under Stress Conditions

A special issue of Metabolites (ISSN 2218-1989). This special issue belongs to the section "Plant Metabolism".

Deadline for manuscript submissions: closed (15 June 2022) | Viewed by 9414

Special Issue Editor

Dr. Pavel Feduraev

E-Mail Website
Guest Editor
Institute of Living Systems, Immanuel Kant Baltic Federal University, 236040 Kaliningrad, Russia
Interests: phenolic compounds; bioactive substances; secondary metabolites; ROS; AOX; PAL activity

Special Issue Information

Dear Colleagues,

Secondary metabolites play an important role in plant adaptation and survival. In addition, this group of physiologically active compounds acts as one of the critical regulators in the creation of ecological links between other species. Secondary metabolites help protect plants not only from pathogenic attacks (acting as elements of nonspecific plant immunity), but also allow them to successfully adapt to abiotic stressors.

However, it is also worth noting that the production of secondary metabolites is influenced by environmental factors. Environmental factors can determine the synthesis and subsequent accumulation of secondary metabolites. Understanding the specific mechanisms responsible for the biosynthesis, accumulation, and degradation of secondary metabolites would help formulate new strategies for improving the production of this group of natural compounds.

This Special Issue of Metabolites, "Metabolism of Plant Secondary Metabolites Under Stress Conditions”, will be devoted not only to the consideration of the physiological aspects of the accumulation and metabolism of biologically active plant compounds under stress factors, but also to the application of metabolomics methods to assess the profile of plant secondary compounds under the influence of environmental factors. Topics to be covered in this Special Issue include (not exclusively): secondary metabolites and abiotic stress, mechanisms of adaptation to abiotic stresses, assessment of changes in the metabolic profile of plants against the background of changing environmental factors, assessment of the metabolic profile of plants against the background of pathogenic invasion and attacks of insects pests, the role of primary metabolites in the accumulation of secondary compounds under stress condition, chemodiversity of plant metabolites under stress contition, metabolite-mediated signaling pathways and cascades, metabolic signals during stress combinations, stress priming and metabolic memory during stress, metabolomic network during abiotic stress and recovery.

This Special Issue welcomes the submission of review and research papers or short communications on topics related to plant secondary metabolites and their regulation under stress conditions.

This Special Issue of Metabolites aims to present a collection of high quality relevant scientific papers to promote discussions and inform the scientific community of significant new information within this new field.

Dr. Pavel Feduraev
Guest Editor

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. Metabolites 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 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

  • secondary metabolites
  • phenolic compounds
  • alkaloids
  • isoprenoids
  • biotic stress
  • abiotic stress
  • metabolic profiling
  • metabolic signals

Published Papers (4 papers)

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Research

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10 pages, 1704 KiB  
Article
Metabolism of Mycosporine-Glutamicol in the Lichen Cladonia arbuscula subsp. squarrosa under Seasonal Changes and Elevated Exposure to UV-B or PAR Irradiation
by Ewelina Chrapusta-Srebrny, Jan Bialczyk, Kornelia Duchnik and Beata Bober
Metabolites 2022, 12(7), 632; https://doi.org/10.3390/metabo12070632 - 10 Jul 2022
Viewed by 1467
Abstract
Cladonia arbuscula in its environmental niches is regularly affected by daily and annual variations in solar radiation. Mycosporine-glutamicol, Myc-Glu(OH), which it synthesizes, may act as a significant cellular UV-protector. Therefore, we studied this compound concentration in lichen thalli concerning seasonal changes and increased [...] Read more.
Cladonia arbuscula in its environmental niches is regularly affected by daily and annual variations in solar radiation. Mycosporine-glutamicol, Myc-Glu(OH), which it synthesizes, may act as a significant cellular UV-protector. Therefore, we studied this compound concentration in lichen thalli concerning seasonal changes and increased exposure to UV-B and photosynthetically active radiation (PAR) with/without simultaneous CO2 deprivation. Myc-Glu(OH) occurred year-round and exhibited a strong seasonality. The most crucial role in the control of its synthesis played UV-B radiation, although its high concentration was also found after PAR irradiation at 1000 µmol m−2 s−1. As PAR intensity increased to 2000 µmol m−2 s−1, the rate of Myc-Glu(OH) synthesis slowed down. In turn, under dark/PAR irradiation with simultaneous deprivation of CO2 in the atmosphere surrounding C. arbuscula and during darkness with continuous access to atmospheric CO2, its production was insignificant. Obtained data confirmed that Myc-Glu(OH) plays an important role in protecting C. arbuscula from UV damage and favours its adaptation to environmental stress in its natural habitat. They also suggest that its synthesis is a synergism of multiple factors. Consequently, further studies should focus on their evaluation and the identification of a lichen partner actively involved in Myc-Glu(OH) biogenesis. Full article
(This article belongs to the Special Issue Metabolism of Plant Secondary Metabolites under Stress Conditions)
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15 pages, 4262 KiB  
Article
Accumulation of Secondary Metabolites of Rhodiola semenovii Boriss. In Situ in the Dynamics of Growth and Development
by Nina V. Terletskaya, Nazym K. Korbozova, Alexander E. Grazhdannikov, Gulnaz A. Seitimova, Nataliya D. Meduntseva and Nataliya O. Kudrina
Metabolites 2022, 12(7), 622; https://doi.org/10.3390/metabo12070622 - 6 Jul 2022
Cited by 9 | Viewed by 1558
Abstract
Rhodiola semenovii Boriss. (Regel and Herder) might be a promising replacement for the well-known but endangered Rhodiola rosea L. In this research, the metabolic profile of R. semenovii, including drug-active and stress-resistant components, was studied in the context of source–sink interactions in [...] Read more.
Rhodiola semenovii Boriss. (Regel and Herder) might be a promising replacement for the well-known but endangered Rhodiola rosea L. In this research, the metabolic profile of R. semenovii, including drug-active and stress-resistant components, was studied in the context of source–sink interactions in situ in the dynamics of growth and development. Gas chromatography with mass spectrometric detection and liquid chromatography methods were used. The data obtained allow for assumptions to be made about which secondary metabolites determine the level of stress resistance in R. semenovii at different stages of ontogeny in situ. For the first time, an expansion in the content of salidroside in the above-ground organs, with its maximum value during the period of seed maturation, and a significant decrease in its content in the root were revealed in the dynamics of vegetation. These results allow us to recommend collecting the ground component of R. semenovii for pharmaceutical purposes throughout the seed development stage without damaging the root system. Full article
(This article belongs to the Special Issue Metabolism of Plant Secondary Metabolites under Stress Conditions)
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16 pages, 5265 KiB  
Article
Metabolomics Reveals 5-Aminolevulinic Acid Improved the Ability of Tea Leaves (Camellia sinensis L.) against Cold Stress
by Fei Yan, Dong Qu, Xiaohua Chen, Haitao Zeng, Xinsheng Li and Ching Yuan Hu
Metabolites 2022, 12(5), 392; https://doi.org/10.3390/metabo12050392 - 26 Apr 2022
Cited by 9 | Viewed by 2003
Abstract
Tea is an important woody crop whose cultivation is severely limited by cold stress. Although 5-aminolevulinic acid (ALA) is known to be effective in alleviating abiotic stresses in plants, knowledge of the detailed metabolic response of tea plants to exogenous ALA-induced cold resistance [...] Read more.
Tea is an important woody crop whose cultivation is severely limited by cold stress. Although 5-aminolevulinic acid (ALA) is known to be effective in alleviating abiotic stresses in plants, knowledge of the detailed metabolic response of tea plants to exogenous ALA-induced cold resistance is still limited—a lack which restricts our ability to protect tea plants from cold stress. In the present study, we performed an in-depth metabolomics analysis to elucidate the metabolic responses of tea plants to cold stress and explore the role of ALA in improving tea plants’ cold-resistance capability. Metabolic profiles showed that cold stress altered various metabolisms in tea plants, especially galactose composition and flavonoid contents. Furthermore, exogenous ALA application altered a series of metabolisms associated with cold stress. Importantly, increases in metabolites, including catechin, 3,4-dihydroxyphenylacetic acid and procyanidin B2, involved in the mechanisms of ALA improved tea plants’ cold resistance. Overall, our study deciphered detailed metabolic responses of tea plants to cold stress and elucidated the mechanisms of ALA in enhancing cold resistance through rebuilding compositions of soluble carbohydrates and flavonoids. Therefore, we have provided a basis for exogenous usage of ALA to protect tea plants from cold stress. Full article
(This article belongs to the Special Issue Metabolism of Plant Secondary Metabolites under Stress Conditions)
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Review

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22 pages, 5147 KiB  
Review
Advances in Metabolomics-Driven Diagnostic Breeding and Crop Improvement
by Ali Razzaq, David S. Wishart, Shabir Hussain Wani, Muhammad Khalid Hameed, Muhammad Mubin and Fozia Saleem
Metabolites 2022, 12(6), 511; https://doi.org/10.3390/metabo12060511 - 2 Jun 2022
Cited by 10 | Viewed by 3554
Abstract
Climate change continues to threaten global crop output by reducing annual productivity. As a result, global food security is now considered as one of the most important challenges facing humanity. To address this challenge, modern crop breeding approaches are required to create plants [...] Read more.
Climate change continues to threaten global crop output by reducing annual productivity. As a result, global food security is now considered as one of the most important challenges facing humanity. To address this challenge, modern crop breeding approaches are required to create plants that can cope with increased abiotic/biotic stress. Metabolomics is rapidly gaining traction in plant breeding by predicting the metabolic marker for plant performance under a stressful environment and has emerged as a powerful tool for guiding crop improvement. The advent of more sensitive, automated, and high-throughput analytical tools combined with advanced bioinformatics and other omics techniques has laid the foundation to broadly characterize the genetic traits for crop improvement. Progress in metabolomics allows scientists to rapidly map specific metabolites to the genes that encode their metabolic pathways and offer plant scientists an excellent opportunity to fully explore and rationally harness the wealth of metabolites that plants biosynthesize. Here, we outline the current application of advanced metabolomics tools integrated with other OMICS techniques that can be used to: dissect the details of plant genotype–metabolite–phenotype interactions facilitating metabolomics-assisted plant breeding for probing the stress-responsive metabolic markers, explore the hidden metabolic networks associated with abiotic/biotic stress resistance, facilitate screening and selection of climate-smart crops at the metabolite level, and enable accurate risk-assessment and characterization of gene edited/transgenic plants to assist the regulatory process. The basic concept behind metabolic editing is to identify specific genes that govern the crucial metabolic pathways followed by the editing of one or more genes associated with those pathways. Thus, metabolomics provides a superb platform for not only rapid assessment and commercialization of future genome-edited crops, but also for accelerated metabolomics-assisted plant breeding. Furthermore, metabolomics can be a useful tool to expedite the crop research if integrated with speed breeding in future. Full article
(This article belongs to the Special Issue Metabolism of Plant Secondary Metabolites under Stress Conditions)
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