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Latest Research on Plant Steroids
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Latest Research on Plant Steroids

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: closed (31 December 2022) | Viewed by 4217

Special Issue Editor

Dr. Jana Oklestkova

E-Mail Website
Guest Editor
Laboratory of Growth Regulators, Institute of Experimental Botany of the Czech Academy of Science & Palacky University, Olomouc, Czech Republic
Interests: phytohormones; brassinosteroids; plant steroids; immunoassays (polyclonal/monoclonal antibodies); methods for the determination of plant hormones
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Steroids are key regulators of growth and physiology in both plants and animals. In general, these organic compounds contain a characteristic arrangement of four cycloalkane rings joined to each other. Three of these are cyclohexanes (A, B, and C) and one is the cyclopentane system (D ring).

Plant steroids are well known to modulate a plethora of physiological responses in plants, leading to an improvement in quality as well as yield of food crops. The treatment of plants with steroids or their precursors influence plant development: cell divisions, root and shoot growth, embryo growth, and flowering.

Rapid progress in steroid research may lead to the clarification of many details concerning their action and to their wider use in agriculture.

This Special Issue invites researchers to publish their results, including original research and methodological or review papers, focusing on plant steroids, EUR their chemistry and bioactivity. Studies focused on their mechanisms of action are also welcome.

Dr. Jana Oklestkova
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. 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

  • brassinosteroids

  • phytoecdysteroids
  • withanolides
  • cardenolides
  • bufadienolides
  • biological activitiy
  • analysis
  • molecular mechanism

Published Papers (2 papers)

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Research

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23 pages, 4850 KiB  
Article
Inhibition of the Glycogen Synthase Kinase 3 Family by the Bikinin Alleviates the Long-Term Effects of Salinity in Barley
by Jolanta Groszyk and Mateusz Przyborowski
Int. J. Mol. Sci. 2022, 23(19), 11644; https://doi.org/10.3390/ijms231911644 - 01 Oct 2022
Viewed by 1328
Abstract
Crops grown under stress conditions show restricted growth and, eventually, reduced yield. Among others, brassinosteroids (BRs) mitigate the effects of stress and improve plant growth. We used two barley cultivars with differing sensitivities to BRs, as determined by the lamina joint inclination test. [...] Read more.
Crops grown under stress conditions show restricted growth and, eventually, reduced yield. Among others, brassinosteroids (BRs) mitigate the effects of stress and improve plant growth. We used two barley cultivars with differing sensitivities to BRs, as determined by the lamina joint inclination test. Barley plants with the 2nd unfolded leaf were sprayed with a diluted series of bikinin, an inhibitor of the Glycogen Synthase Kinase 3 (GSK3) family, which controls the BR signaling pathway. Barley was grown under salt stress conditions up to the start of the 5th leaf growth stage. The phenotypical, molecular, and physiological changes were determined. Our results indicate that the salt tolerance of barley depends on its sensitivity to BRs. We confirmed that barley treatment with bikinin reduced the level of the phosphorylated form of HvBZR1, the activity of which is regulated by GSK3. The use of two barley varieties with different responses to salinity led to the identification of the role of BR signaling in photosynthesis activity. These results suggest that salinity reduces the expression of the genes controlling the BR signaling pathway. Moreover, the results also suggest that the functional analysis of the GSK3 family in stress responses can be a tool for plant breeding in order to improve crops’ resistance to salinity or to other stresses. Full article
(This article belongs to the Special Issue Latest Research on Plant Steroids)
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Review

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19 pages, 1498 KiB  
Review
Advances in the Biosynthesis and Molecular Evolution of Steroidal Saponins in Plants
by Yi Li, Huan Yang, Zihao Li, Song Li and Jiaru Li
Int. J. Mol. Sci. 2023, 24(3), 2620; https://doi.org/10.3390/ijms24032620 - 30 Jan 2023
Cited by 5 | Viewed by 2420
Abstract
Steroidal saponins are an important type of plant-specific metabolite that are essential for plants’ responses to biotic and abiotic stresses. Because of their extensive pharmacological activities, steroidal saponins are also important industrial raw materials for the production of steroidal drugs. In recent years, [...] Read more.
Steroidal saponins are an important type of plant-specific metabolite that are essential for plants’ responses to biotic and abiotic stresses. Because of their extensive pharmacological activities, steroidal saponins are also important industrial raw materials for the production of steroidal drugs. In recent years, more and more studies have explored the biosynthesis of steroidal saponins in plants, but most of them only focused on the biosynthesis of their molecular skeleton, diosgenin, and their subsequent glycosylation modification mechanism needs to be further studied. In addition, the biosynthetic regulation mechanism of steroidal saponins, their distribution pattern, and their molecular evolution in plants remain unclear. In this review, we summarized and discussed recent studies on the biosynthesis, molecular regulation, and function of steroidal saponins. Finally, we also reviewed the distribution and molecular evolution of steroidal saponins in plants. The elucidation of the biosynthesis, regulation, and molecular evolutionary mechanisms of steroidal saponins is crucial to provide new insights and references for studying their distribution, diversity, and evolutionary history in plants. Furthermore, a deeper understanding of steroidal saponin biosynthesis will contribute to their industrial production and pharmacological applications. Full article
(This article belongs to the Special Issue Latest Research on Plant Steroids)
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