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Horticulturae
Special Issues
Tolerance and Response of Ornamental Plants to Abiotic Stress—2nd Edition
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Tolerance and Response of Ornamental Plants to Abiotic Stress—2nd Edition

A special issue of Horticulturae (ISSN 2311-7524). This special issue belongs to the section "Biotic and Abiotic Stress".

Deadline for manuscript submissions: 30 August 2025 | Viewed by 441

Special Issue Editors

Dr. Zhouli Liu

E-Mail Website
Guest Editor
College of Life Science and Engineering, Shenyang University, Shenyang 110044, China
Interests: abiotic stress biochemistry; plant response to environmental stress caused by potentially toxic substances; heavy metal phytotoxicity; plant contamination; environmental pollution remediation; ecological remediation technology
Special Issues, Collections and Topics in MDPI journals
Dr. Yi Zhao

E-Mail Website
Guest Editor
School of Chemistry and Environmental Engineering, Liaoning University of Technology, Jinzhou 121001, China
Interests: near-surface ozone pollution; plant response to environmental stress caused by potentially toxic substances; carbon-nitrogen-oxygen cycle; environmental pollution remediation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Ornamental plants are not only very important in environmental decoration but also have wonderful mechanisms for dealing with soil contamination, maintaining a balance between carbon dioxide and oxygen in the environment, purifying the air, controlling humidity, reducing dust and noise, etc.

Nowadays, ornamental plants are challenged by abiotic stress factors such as heavy metal pollution, climate change, elevated near-surface O3 concentrations, low water availability (drought), excess water (flooding/water logging), temperature extremes (cold, frost and heat), and toxicity from salinity, carbon-based nanomaterials, mineral deficiency, and other pollutants. The negative effects of abiotic stresses bring about changes in plant growth, development and metabolism, and, in extreme cases, lead to plant death.

It is thus necessary to evaluate how ornamental plants can tolerate and respond to abiotic stress factors.

This Special Issue welcomes the submission of studies that explore the effect of different abiotic stresses on ornamental plants, including research regarding the growth, development, uptake, accumulation and tolerance capacity, oxidative stress, antioxidative and molecular response, induced defense mechanisms, toxicity effects, etc., of ornamental plants.

Dr. Zhouli Liu
Dr. Yi Zhao
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. 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
  • abiotic stress
  • tolerance mechanisms
  • stess responses
  • phytotoxicity

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Published Papers (1 paper)

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Research

22 pages, 1868 KiB  
Article
Effects of Exogenous Trehalose on Plant Growth, Physiological and Biochemical Responses in Gardenia Jasminoides Seedlings During Cold Stress
by Dejian Zhang, Jianhao Zheng and Qingping Yi
Horticulturae 2025, 11(6), 615; https://doi.org/10.3390/horticulturae11060615 - 30 May 2025
Viewed by 286
Abstract
In order to explore the effect and mechanism of trehalose (Tre) on the growth and cold resistance of gardenia jasminoides Ellis under low-temperature stress, 15 mmol/L of Tre was used on gardenia seedlings under different degrees of low-temperature stress. The results show that [...] Read more.
In order to explore the effect and mechanism of trehalose (Tre) on the growth and cold resistance of gardenia jasminoides Ellis under low-temperature stress, 15 mmol/L of Tre was used on gardenia seedlings under different degrees of low-temperature stress. The results show that −3 °C (low-temperature stress) significantly inhibited the growth of gardenia, while Tre at 15 mmol/L restored the plant height, number of leaves, total plant weight, and fresh weight of above ground and underground parts to 88.10%, 81.05%, 98%, 87.61% and 96.68% at 20 °C (normal temperature conditions). The total length of the root, number of lateral roots, total root surface area and root volume recovered to 88.48%, 74.08%, 104.03% and 83.77% under normal temperature at 20 °C. The chlorophyll content, chlorophyll fluorescence parameters and photosynthetic intensity parameters in the leaves of gardenia jasminoides were significantly decreased under low-temperature stress at −3 °C, while the contents of chlorophyll a, chlorophyll b and total chlorophyll were significantly increased under 15 mmol/L Tre treatment. Meanwhile, chlorophyll fluorescence parameters (φPSII, Fv′/Fm′ and qP increased by 18.60%, 73.17% and 81.82%, respectively) and photosynthetic intensity parameters (Pn, Gs, Ci and Tr increased by 33.33%, 70.86%, 14.83% and 116.50%, respectively) were also increased. At −3 °C, Tre treatment significantly increased the activities of SOD, POD and CAT in roots, and reduced the content of reactive oxygen species (H2O2 and superoxide anion). At the same time, the contents of root osmotic regulatory substances (proline and malondialdehyde) were decreased by 15.16% and 12.65%, respectively. At −3 °C, Tre significantly increased the root auxin content and significantly decreased the trans-zeanoside content, but had no significant effects on gibberellin and abscisic acid. Tre can also regulate the content of root respiratory metabolites under low-temperature stress, increase the malic acid content by 96.77% under −3 °C, and decrease the succinic acid content by 56.34%. In conclusion, Tre reduces the content of ROS and its damage by improving the antioxidant capacity in roots and enhances the osmoregulation and stability of cell membranes by reducing the content of osmoregulation substances, hormones and aerobic respiratory metabolites in the root, thus enhancing the cold resistance of gardenia. Full article
(This article belongs to the Special Issue Tolerance and Response of Ornamental Plants to Abiotic Stress—2nd Edition)
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