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Regulation of Transcription Factor–Hormone Networks in Plants
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Regulation of Transcription Factor–Hormone Networks 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: closed (15 April 2024) | Viewed by 5063

Special Issue Editors

Dr. Massimiliano Sassi

E-Mail Website
Guest Editor
Institute of Molecular Biology and Pathology, National Research Council, 500185 Rome, Italy
Interests: plant development; morphogenesis; meristems; phytohormones
Dr. Giovanna Sessa

E-Mail Website
Guest Editor
Institute of Molecular Biology and Pathology, National Research Council, 500185 Rome, Italy
Interests: arabidopsis; developmental pathways; environmental responses; HD-Zip transcription factors

Special Issue Information

Dear Colleagues,

The generation of complex plant architectures depends on the coordinated balance between the proliferative activity of plant meristems and the differentiation of newly formed cells and tissues into organs with definite sizes, shapes and spatial arrangements. This balance is genetically controlled by molecular regulatory networks involving key transcription factors and phytohormones which, through a complex web of interactions, drive plant developmental patterning. Understanding the molecular mechanisms behind these networks is relevant to fundamental and applied research alike: agronomically relevant traits such as plant biomass, crop yield and agricultural land use all depend on the genetic mechanisms regulating plant architectures.

This Special Issue will focus on the TF–hormone molecular regulatory networks and their role in the genetic control of plant architecture, as well as explore recent advances in the regulation of meristems functions and organ formation. We will welcome original research contributions and timely review articles on model and crop species.

Dr. Massimiliano Sassi
Dr. Giovanna Sessa
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. 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

  • transcription factors
  • hormones
  • regulatory networks
  • plant architecture
  • meristem
  • organogenesis

Published Papers (4 papers)

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Research

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19 pages, 8095 KiB  
Article
Transcriptomic and Metabolomic Insights into ABA-Related Genes in Cerasus humilis under Drought Stress
by Yu Liu, Chenxue Zhao, Xuedong Tang, Lianjun Wang and Ruixue Guo
Int. J. Mol. Sci. 2024, 25(14), 7635; https://doi.org/10.3390/ijms25147635 - 11 Jul 2024
Viewed by 379
Abstract
Cerasus humilis, a small shrub of the Cerasus genus within the Rosaceae family, is native to China and renowned for its highly nutritious and medicinal fruits, robust root system, and remarkable drought resistance. This study primarily employed association transcriptome and metabolome analyses [...] Read more.
Cerasus humilis, a small shrub of the Cerasus genus within the Rosaceae family, is native to China and renowned for its highly nutritious and medicinal fruits, robust root system, and remarkable drought resistance. This study primarily employed association transcriptome and metabolome analyses to assess changes in abscisic acid (ABA) levels and identify key regulatory genes in C. humilis subjected to varying degrees of drought stress. Notably, we observed distinct alterations in transcription factors across different drought intensities. Specifically, our transcriptome data indicated noteworthy shifts in GATA, MYB, MYC, WRKY, C2H2, and bHLH transcription factor families. Furthermore, combined transcriptomic and metabolomic investigations demonstrated significant enrichment of metabolic pathways, such as ‘Carbon metabolism’, ‘Biosynthesis of amino acids’, ‘Biosynthesis of cofactors’, ‘Phenylpropanoid biosynthesis’, ‘Starch and sucrose metabolism’, and ‘Plant hormone signal transduction’ under moderate (Mod) or severe (Sev) drought conditions. A total of 11 candidate genes involved in ABA biosynthesis and signaling pathways were identified. The down-regulated genes included secoisolariciresinol dehydrogenase-like and PYL2. Conversely, genes including FAD-dependent urate hydroxylase-like, cytochrome P450 97B2, carotenoid cleavage dioxygenase 4 (CCD4), SnRK2.2, ABI 5-like protein 5, PP2C 51, and SnRK2.3, were up-regulated under Mod or Sev drought stress. This study lays the genetic foundation for ABA biosynthesis to enhance drought tolerance and provides genetic resources for plant genetic engineering and breeding efforts. Full article
(This article belongs to the Special Issue Regulation of Transcription Factor–Hormone Networks in Plants)
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Review

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13 pages, 1411 KiB  
Review
Male Germ Cell Specification in Plants
by Wenqian Chen, Pan Wang, Chan Liu, Yuting Han and Feng Zhao
Int. J. Mol. Sci. 2024, 25(12), 6643; https://doi.org/10.3390/ijms25126643 - 17 Jun 2024
Viewed by 425
Abstract
Germ cells (GCs) serve as indispensable carriers in both animals and plants, ensuring genetic continuity across generations. While it is generally acknowledged that the timing of germline segregation differs significantly between animals and plants, ongoing debates persist as new evidence continues to emerge. [...] Read more.
Germ cells (GCs) serve as indispensable carriers in both animals and plants, ensuring genetic continuity across generations. While it is generally acknowledged that the timing of germline segregation differs significantly between animals and plants, ongoing debates persist as new evidence continues to emerge. In this review, we delve into studies focusing on male germ cell specifications in plants, and we summarize the core gene regulatory circuits in germ cell specification, which show remarkable parallels to those governing meristem homeostasis. The similarity in germline establishment between animals and plants is also discussed. Full article
(This article belongs to the Special Issue Regulation of Transcription Factor–Hormone Networks in Plants)
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22 pages, 1537 KiB  
Review
The Ins and Outs of Homeodomain-Leucine Zipper/Hormone Networks in the Regulation of Plant Development
by Giovanna Sessa, Monica Carabelli and Massimiliano Sassi
Int. J. Mol. Sci. 2024, 25(11), 5657; https://doi.org/10.3390/ijms25115657 - 23 May 2024
Viewed by 543
Abstract
The generation of complex plant architectures depends on the interactions among different molecular regulatory networks that control the growth of cells within tissues, ultimately shaping the final morphological features of each structure. The regulatory networks underlying tissue growth and overall plant shapes are [...] Read more.
The generation of complex plant architectures depends on the interactions among different molecular regulatory networks that control the growth of cells within tissues, ultimately shaping the final morphological features of each structure. The regulatory networks underlying tissue growth and overall plant shapes are composed of intricate webs of transcriptional regulators which synergize or compete to regulate the expression of downstream targets. Transcriptional regulation is intimately linked to phytohormone networks as transcription factors (TFs) might act as effectors or regulators of hormone signaling pathways, further enhancing the capacity and flexibility of molecular networks in shaping plant architectures. Here, we focus on homeodomain-leucine zipper (HD-ZIP) proteins, a class of plant-specific transcriptional regulators, and review their molecular connections with hormonal networks in different developmental contexts. We discuss how HD-ZIP proteins emerge as key regulators of hormone action in plants and further highlight the fundamental role that HD-ZIP/hormone networks play in the control of the body plan and plant growth. Full article
(This article belongs to the Special Issue Regulation of Transcription Factor–Hormone Networks in Plants)
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26 pages, 3205 KiB  
Review
Stem Cells: Engines of Plant Growth and Development
by Liu Hong and Jennifer C. Fletcher
Int. J. Mol. Sci. 2023, 24(19), 14889; https://doi.org/10.3390/ijms241914889 - 4 Oct 2023
Cited by 3 | Viewed by 2973
Abstract
The development of both animals and plants relies on populations of pluripotent stem cells that provide the cellular raw materials for organ and tissue formation. Plant stem cell reservoirs are housed at the shoot and root tips in structures called meristems, with the [...] Read more.
The development of both animals and plants relies on populations of pluripotent stem cells that provide the cellular raw materials for organ and tissue formation. Plant stem cell reservoirs are housed at the shoot and root tips in structures called meristems, with the shoot apical meristem (SAM) continuously producing aerial leaf, stem, and flower organs throughout the life cycle. Thus, the SAM acts as the engine of plant development and has unique structural and molecular features that allow it to balance self-renewal with differentiation and act as a constant source of new cells for organogenesis while simultaneously maintaining a stem cell reservoir for future organ formation. Studies have identified key roles for intercellular regulatory networks that establish and maintain meristem activity, including the KNOX transcription factor pathway and the CLV-WUS stem cell feedback loop. In addition, the plant hormones cytokinin and auxin act through their downstream signaling pathways in the SAM to integrate stem cell activity and organ initiation. This review discusses how the various regulatory pathways collectively orchestrate SAM function and touches on how their manipulation can alter stem cell activity to improve crop yield. Full article
(This article belongs to the Special Issue Regulation of Transcription Factor–Hormone Networks in Plants)
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