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Trees Genetics, Genomics, and Molecular Breeding

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Plant Sciences".

Deadline for manuscript submissions: closed (30 August 2025) | Viewed by 2271

Special Issue Editor


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Guest Editor
Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou 311400, China
Interests: tree genetics and genomics; genus Camellia; non-coding RNA; genome evolution; plant domestication
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Special Issue Information

Dear Colleagues,

Thanks to the development of gene sequencing technology, the field of tree biology research is rapidly advancing, with profound impacts on wood safety, economic forestry, ecology, and the mitigation of climate change. An increasing number of researchers have released genomic data related to tree species, enabling us to utilize their omics data to mine key regulatory genes of tree growth, development, and secondary metabolism, thereby facilitating molecular genetic improvement. Considering the pivotal role that trees will play in the future, our understanding of the molecular basis of forest growth, development, and secondary metabolism lags far behind other model plants.

This Special Issue, entitled "Trees Genetics, Genomics, and Molecular Breeding", aims to supplement the current lack of knowledge on the molecular basis of tree growth, development, and secondary metabolism. It covers various aspects of woody plant growth, development, and secondary metabolism, with a focus on using multi-omics research to reveal the key regulatory genes associated with woody plant growth, development, and secondary metabolism, including natural growth, artificial management (such as pruning, fertilization, irrigation, etc.), climate and environmental change, and other studies on growth, development, and secondary metabolism; this also includes research on the function of forest genes and transgenic technology.

We invite researchers to contribute articles that provide an overview of recent advances related to "Trees Genetics, Genomics, and Molecular Breeding". This Special Issue welcomes the submission of research-oriented papers reviews related to this topic. We look forward to receiving your submissions.

Dr. Mingyan Wang is the Guest Editor Assistant, and Mingyan Wang will help manage this Special Issue.

Prof. Dr. Hengfu Yin
Guest Editor

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Keywords

  • trees genetics
  • genomics
  • molecular
  • regulatory mechanism
  • genetic improvement

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Published Papers (2 papers)

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Research

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20 pages, 7183 KB  
Article
Differences in the Gene Regulatory Network for Floral Induction in Two Camellia Species
by Xiong Wang, Weixin Liu, Jiyuan Li, Hengfu Yin, Xinlei Li, Minyan Wang and Zhengqi Fan
Int. J. Mol. Sci. 2025, 26(22), 10854; https://doi.org/10.3390/ijms262210854 - 8 Nov 2025
Viewed by 334
Abstract
The formation of plant flower buds is regulated by various genes occurring upstream in floral induction pathways. However, the precise regulatory roles and underlying molecular mechanisms of these pathways in Camellia flower bud formation remain unclear. This study investigated the annual periodicity pattern [...] Read more.
The formation of plant flower buds is regulated by various genes occurring upstream in floral induction pathways. However, the precise regulatory roles and underlying molecular mechanisms of these pathways in Camellia flower bud formation remain unclear. This study investigated the annual periodicity pattern of flower bud formation in two Camellia species exhibiting distinct flowering phenotypes: Camellia azalea, which initiates flower buds continuously throughout the year, and Camellia japonica, which forms buds only between May and July. C. azalea helps address the lack of summer-flowering representatives within the Camellia genus. Elucidating its unique molecular mechanism of flowering regulation provides valuable guidance for breeding new cultivars with summer blooming traits. Comparative transcriptome analysis of mature leaves sampled annually from the two Camellia species revealed the highest number of differentially expressed genes (DEGs) in C. azalea between May and December, whereas in C. japonica, the peak number of DEGs occurred between June and December. Gene ontology analysis indicated that the most enriched category in the transcriptomes of both species was oxidoreductase activity, which was followed by cofactor binding in C. azalea, whereas in C. japonica, it was cellular amino acid metabolic process. Flowering-related genes were identified from the transcriptome database, yielding 248 transcripts in C. azalea and 257 in C. japonica. The transcriptome analysis also revealed that C. azalea lacks certain floral inhibitory pathways that are present in C. japonica, such as the photoperiod pathway genes including GI2, FKF1, and COL14 and the thermosensitive pathway gene SVP. The reliability of the transcriptome results was further validated by quantitative real-time PCR (qRT-PCR) analysis. These results suggest that differences in upstream regulatory mechanisms within the floral induction pathways of C. azalea and C. japonica may underlie the species-specific patterns in the annual distribution of flower bud formation. Full article
(This article belongs to the Special Issue Trees Genetics, Genomics, and Molecular Breeding)
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Review

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20 pages, 4144 KB  
Review
An Updated Review on Essential Oils from Lauraceae Plants: Chemical Composition and Genetic Characteristics of Biosynthesis
by Fanglan Wu, Yicun Chen, Ming Gao, Wei Li, Yunxiao Zhao and Yangdong Wang
Int. J. Mol. Sci. 2025, 26(12), 5690; https://doi.org/10.3390/ijms26125690 - 13 Jun 2025
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Abstract
Globally, plant-derived natural products such as essential oils serve as primary sources of functional substances for spices, pharmaceuticals, and other applications. With the increasing focus on health and well-being, alongside ongoing public health challenges, there is a critical need to enhance the deep [...] Read more.
Globally, plant-derived natural products such as essential oils serve as primary sources of functional substances for spices, pharmaceuticals, and other applications. With the increasing focus on health and well-being, alongside ongoing public health challenges, there is a critical need to enhance the deep utilization of natural plant products. Lauraceae family essential oils, characterized by their aromatic, volatile properties and notable biological activities (e.g., antibacterial, antioxidant, insect-repellent), hold significant application value across fragrance, cosmetics, chemical industries, biological pesticides, and medicine. Integrating multi-disciplinary data from biology, genomics, metabolomics, and related fields can accelerate comprehensive insights into the biosynthesis mechanisms and functional roles of these essential oils, thereby promoting the development and application of Lauraceae natural products. This review systematically summarizes the accumulation patterns and compositional characteristics of essential oils across diverse genera of Lauraceae. It further explores the evolutionary dynamics of terpene synthase (TPS) gene families and key genes involved in terpenoid biosynthesis pathways, leveraging genomic datasets from Lauraceae species. Finally, the review highlights future research trends for optimizing Lauraceae essential oil resource utilization and advancing molecular breeding of high-oil-content species within the family. Full article
(This article belongs to the Special Issue Trees Genetics, Genomics, and Molecular Breeding)
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