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Horticulturae
Special Issues
Molecular Regulation of Flowering and Development in Ornamental Plants
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Molecular Regulation of Flowering and Development in Ornamental Plants

A special issue of Horticulturae (ISSN 2311-7524). This special issue belongs to the section "Genetics, Genomics, Breeding, and Biotechnology (G2B2)".

Deadline for manuscript submissions: 15 March 2026 | Viewed by 1245

Special Issue Editors

Dr. Yiguang Wang

E-Mail Website
Guest Editor
College of Landscape Architecture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
Interests: flower color; anthocyanins; carotenoids; gene; ornamental plants
Dr. Bin Dong

E-Mail Website
Guest Editor
College of Landscape Architecture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
Interests: flowering; abiotic stress; low temperature; gene; ornamental plants
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Ornamental plants are a broad category of plants valued for their esthetic appeal. Flowers are important reproductive organs of angiosperm, as well as the most important organs of many ornamental plants. Ornamental plants possess a high market value as their flowers exhibit a diverse array of colors, delightful fragrances, distinctive flower shapes, varying sizes, different flowering periods, and abundant availability. Due to these characteristics, ornamental plants hold significant importance in human life, encompassing ecological value, psychological benefits, health advantages, and economic contributions.

To enhance the development and utilization of the important characteristics of ornamental plants, it is essential to conduct relevant research aimed at elucidating the mechanisms underlying the formation of flower traits. This includes investigating the physiological processes, hormone levels, secondary metabolisms, gene expression profiles, and gene regulatory networks involved in flowering and development in ornamental plants. By elucidating these mechanisms, this research can be effectively utilized in production practices and for the targeted breeding of ornamental plants.

This Special Issue focuses on revealing the regulatory mechanisms of physiological, biochemical, and phenotypic changes during the flowering processes of various ornamental plants, with the aim of achieving innovation in plant varieties through biotechnological approaches. We invite researchers to contribute original studies and reviews that cover one or more of the abovementioned aspects related to ornamental plants.

Dr. Yiguang Wang
Dr. Bin Dong
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 250 words) can be sent to the Editorial Office for assessment.

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. Horticulturae is an international peer-reviewed open access monthly 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 2200 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

  • ornamental plants
  • flower traits
  • flowering
  • development
  • physiological processes
  • hormones
  • secondary metabolism
  • genes
  • molecular mechanism

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Published Papers (2 papers)

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Research

25 pages, 8834 KB  
Article
Exogenous Abscisic Acid Enhances Waterlogging Tolerance in Lindera megaphylla
by Yijie Xu, Yuhan Yu, Xinya Niu, Yahui Zhao, Jutang Jiang, Jiuxing Lu, Yonghua Li, Peng Chen and Hongli Liu
Horticulturae 2025, 11(12), 1433; https://doi.org/10.3390/horticulturae11121433 - 27 Nov 2025
Viewed by 395
Abstract
The waterlogging tolerance of Lindera megaphylla, an evergreen species valued for ecological restoration and its role in landscapes, remains unclear, hindering its broader use in riparian green spaces and rain gardens. This study systematically assessed its physiological responses to simulated waterlogging stress [...] Read more.
The waterlogging tolerance of Lindera megaphylla, an evergreen species valued for ecological restoration and its role in landscapes, remains unclear, hindering its broader use in riparian green spaces and rain gardens. This study systematically assessed its physiological responses to simulated waterlogging stress (control/CK, mild/W1, moderate/W2, and severe/W3) and exogenous abscisic acid (ABA) applications (0, 1, and 3 μmol/L). The results showed that severe waterlogging (28 d) drastically reduced seedling survival to 30%, inhibited growth, induced significant reactive oxygen species (ROS) accumulation and membrane damage (malondialdehyde (MDA) +118.59%, relative conductivity (REC) +85.54%), and decreased photosynthetic pigments (Chla −41.60%, Chlb −40.02%, Car −34.33%). Exogenous ABA (3 μmol/L) substantially alleviated stress, increasing survival by 60.61% and enhancing tolerance through three integrated processes: (1) enhancing antioxidant defense (superoxide dismutase (SOD) +10.63%, peroxidase (POD) +9.33%) and reducing ROS; (2) stabilizing osmotic regulation (lower soluble sugars, proteins, and proline and increased leaf water content by +7.89%); (3) preserving photosynthetic integrity, evidenced by restored chlorophyll levels and significantly improved photosystem II and I efficiency. This study is the first comprehensive demonstration that ABA enhances L. megaphylla’s waterlogging tolerance by coordinating antioxidant, osmotic, and photosynthetic responses. Full article
(This article belongs to the Special Issue Molecular Regulation of Flowering and Development in Ornamental Plants)
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17 pages, 11511 KB  
Article
Metabolome and Transcriptome Analysis Reveals Mechanisms Underlying Different Anthocyanin Biosynthesis Affecting Floral Color of Impatiens balsamina
by Jiayao Bian, Mengxue Xia, Aoxiang Ning, Xiuzhen Guo, Lin Peng, Yanjun Zhang, Jinping Deng, Bin Dong and Yiguang Wang
Horticulturae 2025, 11(11), 1275; https://doi.org/10.3390/horticulturae11111275 - 23 Oct 2025
Viewed by 680
Abstract
Impatiens balsamina is a widely distributed ornamental plant known for its attractive floral colors and significant pharmaceutical value. Anthocyanins are responsible for the floral coloration of I. balsamina. However, the regulatory mechanisms of anthocyanin biosynthesis in the various colors of I. balsamina [...] Read more.
Impatiens balsamina is a widely distributed ornamental plant known for its attractive floral colors and significant pharmaceutical value. Anthocyanins are responsible for the floral coloration of I. balsamina. However, the regulatory mechanisms of anthocyanin biosynthesis in the various colors of I. balsamina flowers remain unclear. In this study, we combined metabolome and transcriptome analysis of five groups of I. balsamina with white, pink, red, purple, and magenta flowers. The metabolome analysis identified anthocyanidins, including cyanidin, pelargonidin, delphinidin, peonidin, petunidin, and malvidin, in the petals of I. balsamina. Lower total anthocyanin levels were detected in white and pink flowers compared to red, purple, and magenta flowers. The red coloration was attributed to high concentrations of pelargonidin glucosides, while purple coloration was due to malvidin glucosides. Magenta flowers contained a high percentage of both malvidin and pelargonidin glucosides. Differentially expressed structural genes such as IbCHS1, IbF3H, IbF3′H, IbF3′5′H1, IbF3′5′H2, IbDFR1, IbOMT1, IbOMT2 and IbOMT3 were identified through transcriptome analysis. Furthermore, co-expression analysis identified candidate transcription factors correlated with these structural genes. This study provides new insights into the regulatory mechanisms of anthocyanin biosynthesis in I. balsamina, and offers a theoretical basis for the directed breeding of varieties with new floral colors. Full article
(This article belongs to the Special Issue Molecular Regulation of Flowering and Development in Ornamental Plants)
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