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Biological Signaling in Plant Development
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Biological Signaling in Plant Development

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

Deadline for manuscript submissions: 31 August 2025 | Viewed by 1891

Special Issue Editors

Prof. Dr. Klaus Palme

E-Mail Website
Guest Editor
1. Faculty of Biology, Institute of Biology II/Molecular Plant Physiology, University of Freiburg, 79104 Freiburg, Germany
2. Centre for BioSystems Analysis, BIOSS Centre for Biological Signalling Studies, University of Freiburg, 79104 Freiburg, Germany
Interests: systems biology approaches to plant hormone signaling; molecular networks and the mechanisms of action of various substances affecting plant growth and development
Dr. Maren Müller

E-Mail Website
Guest Editor
Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain
Interests: plant hormone physiology; crosstalk of plant hormones; plant hormone regulation under abiotic stress; ethylene signaling; ROS and plant hormone interaction; antioxidants; stress tolerance; plant senescence
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Biological signals are essential for plant growth, adaptation, and reproduction. This complex network of signaling pathways involves dynamic interactions between hormones, gene expression, and environmental factors that regulate different stages of plant development from seed germination to flowering. These signals ensure proper plant growth and adaptation to changing environments. Therefore, an understanding of plant biological signaling is essential to elucidate the response mechanisms of cell differentiation, tissue formation, and exogenous stress.

This Special Issue aims to explore the complex signaling networks underlying plant growth and development. It will provide a comprehensive overview of the latest advances in the field through a curated selection of state-of-the-art research articles, reviews, and expert opinions. We invite contributions that shed light on the intricate mechanisms and new insights into signaling regulation in plant biology.

Prof. Dr. Klaus Palme
Dr. Maren Müller
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

  • plant signaling
  • hormone regulation
  • developmental biology
  • signal transduction
  • en-vironmental response
  • cell differentiation
  • organogenesis
  • molecular pathways

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Published Papers (2 papers)

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Research

15 pages, 2888 KiB  
Article
CsPHYB–CsPIF3/4 Regulates Hypocotyl Elongation by Coordinating the Auxin and Gibberellin Biosynthetic Pathways in Cucumber (Cucumis sativus L.)
by Liqin Chen, Zongqing Qiu, Jing Dong, Runhua Bu, Yu Zhou, Huilin Wang and Liangliang Hu
Plants 2025, 14(3), 371; https://doi.org/10.3390/plants14030371 - 26 Jan 2025
Viewed by 743
Abstract
Hypocotyl length is closely related to quality in seedlings and is an important component of plant height vital for plant-type breeding in cucumber. However, the underlying molecular mechanisms of hypocotyl elongation are poorly understood. In this study, the endogenous hormone content of indole [...] Read more.
Hypocotyl length is closely related to quality in seedlings and is an important component of plant height vital for plant-type breeding in cucumber. However, the underlying molecular mechanisms of hypocotyl elongation are poorly understood. In this study, the endogenous hormone content of indole acetic acid (IAA) and gibberellin (GA3) showed an increase in the long hypocotyl Csphyb (phytochrome B) mutant AM274M compared with its wild-type AM274W. An RNA-sequencing analysis identified 1130 differentially expressed genes (DEGs), of which 476 and 654 were up- and downregulated in the mutant AM274M, respectively. A KEGG enrichment analysis exhibited that these DEGs were mainly enriched in the plant hormone signal transduction pathway. The expression levels of the pivotal genes CsGA20ox-2, in the gibberellin biosynthesis pathway, and CsYUCCA8, in the auxin biosynthesis pathway, were notably elevated in the hypocotyl of the mutant AM274M, in contrast to the wild-type AM274W. Additionally, GUS staining and a dual-luciferase reporter assay corroborated that the phytochrome-interacting factors CsPIF3/4 can bind to the E(G)-box motifs present in the promoters of the CsGA20ox-2 and CsYUCCA8 genes, thereby modulating their expression and subsequently influencing hypocotyl elongation. Consequently, this research offers profound insights into the regulation of hypocotyl elongation by auxin and gibberellin in response to light signals and establishes a crucial theoretical groundwork for cultivating robust cucumber seedlings in agricultural practice. Full article
(This article belongs to the Special Issue Biological Signaling in Plant Development)
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16 pages, 3259 KiB  
Article
Elevated CO2 Shifts Photosynthetic Constraint from Stomatal to Biochemical Limitations During Induction in Populus tomentosa and Eucalyptus robusta
by Xianhui Tang, Jie Zhao, Jiayu Zhou, Qingchen Zhu, Xiyang Sheng and Chao Yue
Plants 2025, 14(1), 47; https://doi.org/10.3390/plants14010047 - 27 Dec 2024
Cited by 1 | Viewed by 720
Abstract
The relative impacts of biochemical and stomatal limitations on photosynthesis during photosynthetic induction have been well studied for diverse plants under ambient CO2 concentration (Ca). However, a knowledge gap remains regarding how the various photosynthetic components limit duction efficiency [...] Read more.
The relative impacts of biochemical and stomatal limitations on photosynthesis during photosynthetic induction have been well studied for diverse plants under ambient CO2 concentration (Ca). However, a knowledge gap remains regarding how the various photosynthetic components limit duction efficiency under elevated CO2. In this study, we experimentally investigated the influence of elevated CO2 (from 400 to 800 μmol mol–1) on photosynthetic induction dynamics and its associated limitation components in two broadleaved tree species, Populus tomentosa and Eucalyptus robusta. The results show that elevated CO2 increased the steady-state photosynthesis rate (A) and decreased stomatal conductance (gs) and the maximum carboxylation rate (Vcmax) in both species. While E. robusta exhibited a decrease in the linear electron transport rate (J) and the fraction of open reaction centers in photosynthesis II (qL), P. tomentosa showed a significant increase in non-photochemical quenching (NPQ). With respect to non-steady-state photosynthesis, elevated CO2 significantly reduced the induction time of A following a shift from low to high light intensity in both species. Time-integrated limitation analysis during induction revealed that elevated CO2 reduces the relative impacts of stomatal limitations in both species, consequently shifting the predominant limitation on induction efficiency from stomatal to biochemical components. Additionally, species-specific changes in qL and NPQ suggest that elevated CO2 may increase biochemical limitation by affecting energy allocation between carbon fixation and photoprotection. These findings suggest that, in a future CO2-rich atmosphere, plants productivity under fluctuating light may be primarily constrained by photochemical and non-photochemical quenching. Full article
(This article belongs to the Special Issue Biological Signaling in Plant Development)
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