Horticultural Plant Physiology and Molecular Biology—2nd Edition

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Horticultural Science and Ornamental Plants".

Deadline for manuscript submissions: 31 May 2026 | Viewed by 767

Special Issue Editor


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Guest Editor
College of Horticulture Science, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
Interests: Cucurbitaceae crops; molecular breeding; agronomic traits; epigenetic regulation; epigenetic mechanisms; heavy metal tolerance; metal ion absorption and distribution; cadmium
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Special Issue Information

Dear Colleagues,

Horticulture, inexorably tied to biology, is the study of breeding and cultivation theories and techniques and the physiology of fruit trees, vegetables, ornamental plants, and tea, serving both the horticultural industry and researchers. However, with the continuous research, development, and innovation in this industry, expectations and standards have risen for the development of the horticultural profession.

Over the last several decades, research directions dominated by plant physiology have promoted the development of basic research and applied science in horticultural crops. However, in the 21st century, molecular biology has flourished, and biotechnology has been widely used in the horticultural industry and research, with higher demands regarding the development of horticulture. A firm theoretical basis of molecular biology rooted in traditional plant physiology is required to explore the unique molecular biology of horticultural plants and expand research frontiers.

This Special Issue will showcase research articles and reviews on the physiology and molecular biology of important traits of horticultural crops, summarize research progress in the formation of unique agronomic traits, and present the latest progress on the extensive role of plant physiology and molecular biology in growth, development, comprehensive metabolism, and environmental interactions.

Dr. Shengjun Feng
Guest Editor

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Keywords

  • plant molecular biology
  • plant physiology
  • environmental response
  • secondary metabolism
  • growth and development
  • signal pathway

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Published Papers (2 papers)

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Research

26 pages, 8798 KB  
Article
Overexpression of SlMADS48 Alters the Structure of Inflorescence and the Sizes of Sepal and Fruit in Tomato
by Pengyu Guo, Xin Cheng, Chuanji Xing, Zihan Gao, Jing Xue, Xiuhai Zhang, Guoping Chen, Xuqing Chen and Zongli Hu
Plants 2025, 14(21), 3259; https://doi.org/10.3390/plants14213259 (registering DOI) - 24 Oct 2025
Abstract
MADS-box transcription factors play a vital role in the development of reproductive organs and fruits. However, the mechanisms by which MADS-box transcription factors participate in determining the size of organs remain incompletely understood. This study demonstrated that the overexpression of SlMADS48 results in [...] Read more.
MADS-box transcription factors play a vital role in the development of reproductive organs and fruits. However, the mechanisms by which MADS-box transcription factors participate in determining the size of organs remain incompletely understood. This study demonstrated that the overexpression of SlMADS48 results in elongated sepals and is accompanied by an elevated gibberellin content, compared with the wild type (WT). The interaction between SlMADS48 and several proteins (SlMC, SlMBP21, SlJOINTLESS, and SlFYFL) involved in sepal development was identified. In addition, the OE-SlMADS48 lines exhibited increased branches and total numbers of flowers. Molecular analysis revealed that SlMADS48 interacted with TM29, FUL1, FUL2, and MBP20, which are associated with inflorescence development. Moreover, SlMDS48 directly targeted the promoter of SlTM3 via the CArG-box motif, reducing its transcript levels. Additionally, the overexpression of SlMADS48 led to a reduction in the size of fruit, together with decreased contents of cytokinins and indole acetic acid (IAA) compared with the WT. Furthermore, SlMADS48 directly combined with the promoters of SlcycD6;1 and SlIAA29 in the cytokinin and auxin pathways, respectively. This research advanced our understanding of SlMADS48’s role in determining organ size and provided valuable insights into target gene selection in tomato breeding programs. Full article
(This article belongs to the Special Issue Horticultural Plant Physiology and Molecular Biology—2nd Edition)
15 pages, 4666 KB  
Article
Alleviation of Saline–Alkaline Stress in Alfalfa by a Consortium of Plant-Growth-Promoting Rhizobacteria
by Lingjuan Han, Yixuan Li, Zheng Ma, Bin Li, Yinping Liang, Peng Gao and Xiang Zhao
Plants 2025, 14(17), 2744; https://doi.org/10.3390/plants14172744 - 2 Sep 2025
Viewed by 625
Abstract
Soil salinization critically threatens global agricultural productivity by impairing plant growth and soil fertility. This study investigated the potential of a consortium, comprising Acinetobacter calcoaceticus DP25, Staphylococcus epidermidis DP28, and Enterobacter hormaechei DP29, to enhance the saline–alkali tolerance of alfalfa and improve soil [...] Read more.
Soil salinization critically threatens global agricultural productivity by impairing plant growth and soil fertility. This study investigated the potential of a consortium, comprising Acinetobacter calcoaceticus DP25, Staphylococcus epidermidis DP28, and Enterobacter hormaechei DP29, to enhance the saline–alkali tolerance of alfalfa and improve soil properties. The experiments comprised five germination treatments (saline control, each strain alone, consortium) and three pot treatments (non-saline control, saline control, consortium). Under saline–alkali stress, co-inoculation with the consortium significantly (p < 0.05) increased alfalfa seed germination rates, emergence rates, and biomass (shoot and root dry weight), while promoting root development. Physiological analyses revealed that the bacterial consortium mitigated stress-induced damage by enhancing photosynthetic efficiency, chlorophyll content, and antioxidant enzyme activities (superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT)), while decreasing malondialdehyde (MDA) levels. Moreover, the inoculant improved osmoprotectant accumulation (soluble sugars, soluble proteins, and proline) and modulated soil properties by reducing pH and electrical conductivity (EC), while elevating nutrient availability and soil enzyme activities. Correlation and principal component analyses (PCA) confirmed strong associations among improved plant growth, physiological traits, and soil health. These findings demonstrate that the bacterial consortium effectively alleviates saline–alkali stress in alfalfa by improving soil health, offering a sustainable strategy for ecological restoration and improving agricultural productivity in saline–alkali regions. Full article
(This article belongs to the Special Issue Horticultural Plant Physiology and Molecular Biology—2nd Edition)
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