ArticleBMC plant biology2025
From genome to gene expression: the genomic landscape of a hybrid species of Eucalyptus urophylla × Eucalyptus grandis and its divergence from parental species hybrid.
Article in BMC plant biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Methylome and Transcriptome Analysis Reveals Differences in Callus Development and Plantlet Regeneration Capacity Between TwoPlants (Basel, Switzerland) · 2026Article
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8 authors.
Funding
Abstract
backgroundEucalyptus urophylla × Eucalyptus grandis (E. urograndis) is a globally significant forest tree species renowned for its rapid growth, high yield, and exceptional wood production efficiency. A comparative analysis of its parental genomes, coupled with an in-depth investigation of the expression patterns of wood-related genes, will provide critical genomic resources to enhance research and utilization of this superior eucalypt hybrid species.
resultsIn this study, we present a draft genome assembly consisting of 592.09 Mb of data, with 99.91% anchored to 11 pseudochromosomes. The assembly achieved a contig N50 of up to 3.73 Mb and a scaffold N50 of up to 58.62 Mb. Gene annotation and evaluation revealed that the E. urograndis genome contains 32,151 genes, of which 93.50% were fully annotated using Benchmarking Universal Single-Copy Orthologs (BUSCOs). Based on evolutionary analysis, E. grandis and E. urograndis are estimated to have diverged approximately 2.90 million years ago (Mya). Additionally, 131 gene families were found to be significantly expanded, and 475 positively selected genes (PSGs) were identified in the E. urograndis genome. Furthermore, RNA sequencing (RNA-seq) technology was employed to analyze allele-specific expression patterns of key enzymes involved in cellulose, xylan, and lignin biosynthesis. Several allele-specific expression genes (ASEGs) were identified, potentially associated with heterosis in E. urograndis.
conclusionsThe chromosomal-level genome assembly of E. urograndis presented in this study serves as a valuable genomic resource for eucalyptus molecular breeding, provides novel insights into its evolution, wood formation improvement, and adaptability, and enhances our understanding of genetic and molecular mechanisms underlying heterosis in Eucalyptus hybrids.
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