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Jasmonates: Understanding of Biosynthesis, Metabolism and Action
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Jasmonates: Understanding of Biosynthesis, Metabolism and Action

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

Deadline for manuscript submissions: closed (30 December 2021) | Viewed by 5971

Special Issue Editors

Dr. Emilia Wilmowicz

E-Mail Website
Guest Editor
Department of Plant Physiology and Biotechnology, Nicolaus Copernicus University, ul. Lwowska 1, 87-100 Toruń, Poland
Interests: plant homeostasis; plant biosynthesis pathway; plant hormone
Special Issues, Collections and Topics in MDPI journals
Dr. Agata Kućko

E-Mail Website1 Website2
Guest Editor
Department of Plant Physiology, Institute of Biology, Nowoursynowska 159 St., bldg. 37, 02-776 Warsaw, Poland
Interests: abscission zone; crops; organ abscission; plant physiology; stress
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Over the past few decades, lipid-derived jasmonates (JAs) have been recognized as crucial players in plant stress response and their immunity against biotic/abiotic environmental factors. However, it cannot be forgotten that JAs are crucial for the harmonious course of plant ontogeny since they regulate, for example, tuberous root formation, flower morphogenesis, fruit and seed formation, microbe symbiosis, and senescence. The biosynthesis and signaling of these phytohormones have been extensively studied since the 1980s. The formation of a central compound—jasmonic acid (JA)—starts with oxygenation of chloroplast membranes lipids and leads to the synthesis of 12-oxo-phytodienoic acid (OPDA), a direct precursor of JA. Apart from the chloroplasts, multistage JAs biosynthesis and metabolism reactions also take place in the peroxisomes and the cytosol, and involve numerous genes, enzymes, transcription factors, repressor proteins, and target genes, making the process a very complex one. JA is the initial molecule for the reactions of conjugation, hydroxylation, methylation, and so on. Consequently, inactive, partially active, and fully active compounds are formed. The identification of CORONATINE INSENSITIVE 1 contributed to the classification of JA-Ile as a bioactive molecule. Nevertheless, other JA conjugates exhibit biological activity, for instance, inducing the emission of volatile organic compounds. Therefore, it is not excluded that although the receptors of these compounds have not been already identified, they can play a signaling role, similarly to JA-Ile. Many studies have revealed that the JAs action in the modulation of plant growth and responses largely depends on their interaction with various hormones, for example, gibberellins, cytokinin, auxin, ethylene, and other growth regulators. Interestingly, JAs exhibit anti-cancerogenic activity and inhibit the growth of human cancer cells, which is a particularly intriguing research topic for interdisciplinary studies.

This Special Issue aims to collect novel insights into the regulatory role of JAs in various areas of biology. Both original papers and reviews are welcome.

Dr. Emilia Wilmowicz
Dr. Agata Kućko
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

  • Jasmonates
  • Plant development and physiology
  • Jasmonate biosynthesis
  • Signal transduction
  • Stress responses
  • Jasmomic acid
  • Transcriptional regulators
  • Jasmonate coniugation
  • Lipid-derived phytohormones
  • Jasmonate cross-talk

Published Papers (2 papers)

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Research

16 pages, 2540 KiB  
Article
Jasmonate-Dependent Response of the Flower Abscission Zone Cells to Drought in Yellow Lupine
by Agata Kućko, Aleksandra Bogumiła Florkiewicz, Magdalena Wolska, Jakub Miętki, Małgorzata Kapusta, Krzysztof Domagalski and Emilia Wilmowicz
Plants 2022, 11(4), 527; https://doi.org/10.3390/plants11040527 - 15 Feb 2022
Cited by 6 | Viewed by 2254
Abstract
Lipid membranes, as primary places of the perception of environmental stimuli, are a source of various oxygenated polyunsaturated fatty acids—oxylipins—functioning as modulators of many signal transduction pathways, e.g., phytohormonal. Among exogenous factors acting on plant cells, special attention is given to drought, especially [...] Read more.
Lipid membranes, as primary places of the perception of environmental stimuli, are a source of various oxygenated polyunsaturated fatty acids—oxylipins—functioning as modulators of many signal transduction pathways, e.g., phytohormonal. Among exogenous factors acting on plant cells, special attention is given to drought, especially in highly sensitive crop species, such as yellow lupine. Here, we used this species to analyze the contribution of lipid-related enzymes and lipid-derived plant hormones in drought-evoked events taking place in a specialized group of cells—the flower abscission zone (AZ)—which is responsible for organ detachment from the plant body. We revealed that water deficits in the soil causes lipid peroxidation in these cells and the upregulation of phospholipase D, lipoxygenase, and, concomitantly, jasmonic acid (JA) strongly accumulates in AZ tissue. Furthermore, we followed key steps in JA conjugation and signaling under stressful conditions by monitoring the level and tissue localization of enzyme providing JA derivatives (JASMONATE RESISTANT1) and the JA receptor (CORONATINE INSENSITIVE1). Collectively, drought-triggered AZ activation during the process of flower abscission is closely associated with the lipid modifications, leading to the formation of JA, its conjugation, and induction of signaling pathways. Full article
(This article belongs to the Special Issue Jasmonates: Understanding of Biosynthesis, Metabolism and Action)
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12 pages, 2222 KiB  
Article
Induction of Metabolic Changes in Amino Acid, Fatty Acid, Tocopherol, and Phytosterol Profiles by Exogenous Methyl Jasmonate Application in Tomato Fruits
by Silvia Leticia Rivero Meza, Eric de Castro Tobaruela, Grazieli Benedetti Pascoal, Hilton César Rodrigues Magalhães, Isabel Louro Massaretto and Eduardo Purgatto
Plants 2022, 11(3), 366; https://doi.org/10.3390/plants11030366 - 28 Jan 2022
Cited by 11 | Viewed by 3096
Abstract
Methyl jasmonate hormone can stimulate the production of several metabolites responsible for improving fruit quality and nutritional attributes related to human health. In this context, efforts to manipulate tomatoes, such as using hormonal treatment to increase metabolite levels essential to plant growth and [...] Read more.
Methyl jasmonate hormone can stimulate the production of several metabolites responsible for improving fruit quality and nutritional attributes related to human health. In this context, efforts to manipulate tomatoes, such as using hormonal treatment to increase metabolite levels essential to plant growth and human nutrition, have received considerable attention. The aim of this study was to show the impact of metabolic profile on fruit quality and nutritional properties under exogenous methyl jasmonate during fruit ripening. The treatments were performed using 100 ppm of methyl jasmonate and 100 ppm of gaseous ethylene over 24 h. Ethylene emission, fruit surface color and metabolomics analysis were measured at 4, 10, and 21 days after harvest, considering the untreated fruits as control group. Methyl jasmonate induced the production of amino acids—mainly glutamine, glutamic acid and γ-aminobutyric acid (at least 14-fold higher)—and fatty acids—mainly oleic, linoleic, and linolenic acids (at least three-fold higher than untreated fruits); while exogenous ethylene predominantly affected sugar metabolism, increasing the levels of fructose, mannose and glucose to at least two-fold that levels in the untreated fruits. Additionally, methyl jasmonate significantly affected secondary metabolites, inducing by at least 80% the accumulation of α-tocopherol and β-sitosterol in fully ripe fruits. Our results suggest that the postharvest application of the hormone methyl jasmonate can contribute to the sensory characteristics and increase the nutritional value of the fruits since important changes related to the tomato metabolome were associated with compounds responsible for the fruit quality and health benefits. Full article
(This article belongs to the Special Issue Jasmonates: Understanding of Biosynthesis, Metabolism and Action)
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