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Special Issue "Growth Regulators in Plants"

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Plant Sciences".

Deadline for manuscript submissions: 30 November 2021.

Special Issue Editor

Dr. Aleš Pěnčík
E-Mail Website
Guest Editor
Laboratory of Growth Regulators, Faculty of Science, Palacký University & Institute of Experimental Botany, The Czech Academy of Sciences, Šlechtitelů 27, CZ-78371, Olomouc, Czech Republic
Interests: development of new approaches for isolation and determination of phytohormone metabolites; tissue-, cell- and organelle-specific profiling of auxin metabolome; studying of phytohormones’ biosynthesis and metabolism

Special Issue Information

Dear Colleagues,

Plant hormones (phytohormones) are naturally occurring small signaling molecules. These organic substances regulate all aspects of plant growth and development, as well as responses to various biotic and abiotic stresses. The main groups of hormones produced by plants are auxins, cytokinins, gibberellins, abscisic acid, ethylene, salicylic acid, jasmonates, brassinosteroids and strigolactones. Other substances with a phytohormonal effect also include signal peptides or polyamines. Not only do naturally occurring phytohormones deserve attention, but also synthetic growth regulators, which play an important role in phytohormonal research, plant tissue cultures and agriculture.

Phytohormones act in extremely low concentrations, which has made, and still makes, their investigation very difficult. Recent advances in molecular biology and analytical chemistry have helped to reveal the mechanisms of phytohormones’ action.

This issue of International Journal of Molecular Sciences will focus on recent ressearch on plant hormone biology. Novel bioanalytical methods for the investigation of phytohormones’ metabolic pathways, as well as the praparation and testing of novel synthetic plant growth regulators and their derivatives, are also welcome.

Dr. Aleš Pěnčík
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 papers will be 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. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. There is an Article Processing Charge (APC) for publication in this open access journal. For details about the APC please see here. 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

  • phytohormones
  • plant growth regulators
  • biosynthesis
  • metabolism
  • phytohormone signaling
  • transport
  • plant hormone derivatives
  • biological activity

Published Papers (2 papers)

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Research

Article
Auxin Metabolome Profiling in the Arabidopsis Endoplasmic Reticulum Using an Optimised Organelle Isolation Protocol
Int. J. Mol. Sci. 2021, 22(17), 9370; https://doi.org/10.3390/ijms22179370 - 29 Aug 2021
Viewed by 619
Abstract
The endoplasmic reticulum (ER) is an extensive network of intracellular membranes. Its major functions include proteosynthesis, protein folding, post-transcriptional modification and sorting of proteins within the cell, and lipid anabolism. Moreover, several studies have suggested that it may be involved in regulating intracellular [...] Read more.
The endoplasmic reticulum (ER) is an extensive network of intracellular membranes. Its major functions include proteosynthesis, protein folding, post-transcriptional modification and sorting of proteins within the cell, and lipid anabolism. Moreover, several studies have suggested that it may be involved in regulating intracellular auxin homeostasis in plants by modulating its metabolism. Therefore, to study auxin metabolome in the ER, it is necessary to obtain a highly enriched (ideally, pure) ER fraction. Isolation of the ER is challenging because its biochemical properties are very similar to those of other cellular endomembranes. Most published protocols for ER isolation use density gradient ultracentrifugation, despite its suboptimal resolving power. Here we present an optimised protocol for ER isolation from Arabidopsis thaliana seedlings for the subsequent mass spectrometric determination of ER-specific auxin metabolite profiles. Auxin metabolite analysis revealed highly elevated levels of active auxin form (IAA) within the ER compared to whole plants. Moreover, samples prepared using our optimised isolation ER protocol are amenable to analysis using various “omics” technologies including analyses of both macromolecular and low molecular weight compounds from the same sample. Full article
(This article belongs to the Special Issue Growth Regulators in Plants)
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Article
Overdominance at the Gene Expression Level Plays a Critical Role in the Hybrid Root Growth of Brassica napus
Int. J. Mol. Sci. 2021, 22(17), 9246; https://doi.org/10.3390/ijms22179246 - 26 Aug 2021
Cited by 1 | Viewed by 414
Abstract
Despite heterosis contributing to genetic improvements in crops, root growth heterosis in rapeseed plants is poorly understood at the molecular level. The current study was performed to discover key differentially expressed genes (DEGs) related to heterosis in two hybrids with contrasting root growth [...] Read more.
Despite heterosis contributing to genetic improvements in crops, root growth heterosis in rapeseed plants is poorly understood at the molecular level. The current study was performed to discover key differentially expressed genes (DEGs) related to heterosis in two hybrids with contrasting root growth performance (FO; high hybrid and FV; low hybrid) based on analysis of the root heterosis effect. Based on comparative transcriptomic analysis, we believe that the overdominance at the gene expression level plays a critical role in hybrid roots’ early biomass heterosis. Our findings imply that a considerable increase in up-regulation of gene expression underpins heterosis. In the FO hybrid, high expression of DEGs overdominant in the starch/sucrose and galactose metabolic pathways revealed a link between hybrid vigor and root growth. DEGs linked to auxin, cytokinin, brassinosteroids, ethylene, and abscisic acid were also specified, showing that these hormones may enhance mechanisms of root growth and the development in the FO hybrid. Moreover, transcription factors such as MYB, ERF, bHLH, NAC, bZIP, and WRKY are thought to control downstream genes involved in root growth. Overall, this is the first study to provide a better understanding related to the regulation of the molecular mechanism of heterosis, which assists in rapeseed growth and yield improvement. Full article
(This article belongs to the Special Issue Growth Regulators in Plants)
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