Gene Regulation in Flower and Fruit Development

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Molecular Biology".

Deadline for manuscript submissions: 30 September 2025 | Viewed by 2133

Special Issue Editors


E-Mail Website
Guest Editor
Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing, China
Interests: male sterility; flower development; solanaceae breeding

E-Mail Website
Guest Editor
Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing, China
Interests: male sterility; flower development; fruit development; solanaceae breeding

Special Issue Information

Dear Colleagues,

Flowers and fruits, as key structures in plant reproduction and propagation, have been a major focus in breeding, production, and basic biology research. Well-developed flowers represent the basis for the formation of rounded flowers, and the proper development of flowers directly affects the quality of fruits. From a flower blooming to the fruit ripening, each stage is regulated by a complex network of genes. These genes not only determine the morphological characteristics of the flower and fruit but also influence the quality and nutritional value of the fruit, such as its pigments, sugars, organic acids, and vitamins. These components determine the appearance, flavor, and nutritional value of fruits, which directly affect market competitiveness and consumer satisfaction. A deeper understanding of gene regulatory mechanisms would allow for valuable insights into plant reproductive development and offer new strategies for agricultural breeding and fruit quality improvement.

This Special Issue of Plants will focus on the functions of flowers and fruits in plants and their complex relationship with gene regulation, revealing the molecular mysteries behind the development of flowers and fruits and showcasing new knowledge and breakthroughs in the field of plant science.

Dr. Qing Cheng
Prof. Dr. Huolin Shen
Guest Editors

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Keywords

  • male sterility
  • flower development
  • fruit development
  • hormone regulation
  • gene regulation
  • gene functional validation
  • molecular mechanism

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Published Papers (1 paper)

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Research

16 pages, 6157 KiB  
Article
The MADS-Box Transcription Factor CaRIN Positively Regulates Chlorophyll Degradation During Pepper (Capsicum annuum L.) Fruit Ripening by Repressing the Expression of CaLhcb-P4
by Yingying Song, Qing Cheng, Xingzhe Li, Shijie Ma, Huolin Shen and Liang Sun
Plants 2025, 14(3), 445; https://doi.org/10.3390/plants14030445 - 3 Feb 2025
Cited by 1 | Viewed by 1898
Abstract
Pepper (Capsicum spp.) is an important global vegetable and spice, with fruit color being a key determinant of its commercial quality. However, the regulatory mechanisms underlying pepper fruit color are still not fully understood. This study focuses on the MADS-RIPENING INHIBITOR (MADS-RIN), [...] Read more.
Pepper (Capsicum spp.) is an important global vegetable and spice, with fruit color being a key determinant of its commercial quality. However, the regulatory mechanisms underlying pepper fruit color are still not fully understood. This study focuses on the MADS-RIPENING INHIBITOR (MADS-RIN), a MADS-box transcription factor that regulates various aspects of fruit ripening, including pigmentation. We identified CaRIN, a homolog of tomato’s SlRIN, whose expression is closely associated with fruit ripening in pepper. Silencing CaRIN through virus-induced gene silencing (VIGS) resulted in increased chlorophyll and chlorophyll a content, reduced carotenoid accumulation, and uneven fruit coloration. Integrative analysis of the RNA-seq and DAP-seq data identified 77 target genes regulated by CaRIN, which was involved in processes such as chlorophyll metabolism and plant hormone signaling. Yeast one-hybrid (Y1H) and dual-luciferase (LUC) assays demonstrated that CaRIN directly bound to the promoter of CaLhcb-P4, repressing its expression. Downregulation of CaLhcb-P4 in pepper fruits via VIGS accelerated chlorophyll degradation. Additionally, CaRIN indirectly regulated multiple genes associated with chlorophyll and carotenoid metabolism, sugar transport, and cell wall degradation. These findings provide novel insights into the regulatory mechanisms of chlorophyll degradation during pepper fruit ripening, offering a foundation for further research and potential genetic improvement strategies. Full article
(This article belongs to the Special Issue Gene Regulation in Flower and Fruit Development)
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