Tree Epigenetic Diversity and Its Role in Tree Adaptation

A special issue of Forests (ISSN 1999-4907). This special issue belongs to the section "Genetics and Molecular Biology".

Deadline for manuscript submissions: 31 August 2026 | Viewed by 839

Special Issue Editors


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Guest Editor
Forest Research Institute, ELGO-DIMITRA, Thessaloniki, Greece
Interests: protection and management of forest genetic resources; genetic and epigenetic diversity; population genetics; molecular and conservation genetics; forest genetic monitoring

Special Issue Information

Dear Colleagues,

Trees play an important role in global biodiversity, the carbon cycle, and climate regulation. Their long lifespan requires exceptional adaptive strategies to cope with environmental stresses such as drought, pathogens, and extreme temperatures. Traditionally, adaptation in trees has been studied in the light of genetic diversity. However, it has been shown that epigenetic diversity can significantly influence how trees respond to environmental stresses. Epigenetic mechanisms (DNA methylation, histone modification, and non-coding RNAs) play a critical role in regulating gene expression and activating phenotypic plasticity in response to changing climatic conditions. These mechanisms allow trees to rapidly adapt traits such as leaf morphology, flowering time, and stress tolerance without requiring changes to DNA sequence. This flexibility is critical for coping with short-term fluctuations in environmental conditions. In some tree species, environmentally induced epigenetic states are passed to offspring, a phenomenon known as transgenerational epigenetic inheritance. While the stability of such marks remains under investigation, this mechanism offers a potential pathway for rapid evolutionary responses in long-lived organisms.

In this Special Issue, we review the latest developments and perspectives in the field of epigenetic diversity in trees, including its main mechanisms, how it contributes to environmental response and long-term adaptation, the potential for epigenetic traits to be inherited from generation to generation, whether it affects the resilience of forests to ever-changing climate conditions, management strategies, and new technologies applied to the protection and conservation of forest ecosystems. Submissions of original research articles and reviews are welcome. 

Dr. Ermioni Malliarou
Dr. Evangelia V. Avramidou
Guest Editors

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Keywords

  • climate change
  • epigenetic diversity
  • adaptation
  • forest species
  • molecular methods
  • DNA methylation
  • conservation
  • histone modification
  • non-coding RNAs

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Published Papers (1 paper)

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Research

12 pages, 3784 KB  
Article
Overexpression of Flavonoid Biosynthesis Gene, ZeF3H, from Zelkova schneideriana Enhanced Plant Tolerance to Chilling Stress
by Longfeng Gong, Jiayu Hu, Xiao Liu, Xiaoxiong Lu and Jichen Xu
Forests 2025, 16(12), 1838; https://doi.org/10.3390/f16121838 - 10 Dec 2025
Cited by 1 | Viewed by 535
Abstract
The flavonoid 3′-hydroxylase gene (F3H), in relation to flavonoid biosynthesis, is widely involved in stress tolerance. To understand its contribution to chilling stress, we cloned a ZeF3H gene—1092 bp long and encoding 363 amino acids—from the chilling-tolerant line of Zelkova schneideriana [...] Read more.
The flavonoid 3′-hydroxylase gene (F3H), in relation to flavonoid biosynthesis, is widely involved in stress tolerance. To understand its contribution to chilling stress, we cloned a ZeF3H gene—1092 bp long and encoding 363 amino acids—from the chilling-tolerant line of Zelkova schneideriana. Under a cold treatment, ZeF3H’s expression level in the Zelkova genotypes was found to be significantly related to its morphological performance, with a correlation coefficient of −0.8735. The ZeF3H gene was introduced into tobacco plants. When subjected to 4 °C for 10 h, the ZeF3H-transgenic tobacco plants performed better and had relatively low electrical leakage and malondialdehyde contents—0.76-fold and 0.70-fold lower than the wild-type plant—and had a high proline content and soluble sugar content—1.40- and 1.20-fold higher than that of the WT plants, respectively. In conclusion, ZeF3H can significantly improve plants’ tolerance to chilling stress and can be a candidate gene for molecular breeding programs. Full article
(This article belongs to the Special Issue Tree Epigenetic Diversity and Its Role in Tree Adaptation)
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