ArticleBMC plant biology2020
Differential gene expression reveals mechanisms related to habitat divergence between hybridizing orchids from the Neotropical coastal plains.
Article in BMC plant biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- We are not all the same: The role of intrapopulation trait variability in shaping functional strategy and performance of widespread species.Plant diversity · 2026Article
- Unraveling the Genome of Epidendrum Fulgens: Demographic History and Gene Family Dynamics in a Resilient Neotropical Orchid.Genome biology and evolution · 2026Article
- An Overview of Orchidaceae from Brazil: Advances and Shortfalls After 400 Years of Studies.Plants (Basel, Switzerland) · 2025Review
- Ecophysiological transition mediated by hybridization in a hybrid pine species complex.Plant diversity · 2025Article
- Gene Expression Divergence inPlants (Basel, Switzerland) · 2024Article
- Niche and phenotypic differentiation in fern hybrid speciation, a case study of Pteris fauriei (Pteridaceae).Annals of botany · 2024Article
- Distribution of Biodiversity of Wild Beet Species (GenusPlants (Basel, Switzerland) · 2022Article
- Orchid Phylotranscriptomics: The Prospects of Repurposing Multi-Tissue Transcriptomes for Phylogenetic Analysis and Beyond.Frontiers in plant science · 2022Article
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4 authors.
Funding
Abstract
backgroundClosely related hybridizing species are ideal systems for identifying genomic regions underlying adaptive divergence. Although gene expression plays a central role in determining ecologically-based phenotypic differences, few studies have inferred the role of gene expression for adaptive divergence in Neotropical systems. In this study, we conduct genome-wide expression analysis alongside soil elemental analysis in sympatric and allopatric populations of Epidendrum fulgens and E. puniceoluteum (Orchidaceae), which occur in contrasting adjacent habitats in the Neotropical coastal plains.
resultsThese species were highly differentiated by their gene expression profiles, as determined by 18-21% of transcripts. Gene ontology (GO) terms associated with reproductive processes were enriched according to comparisons between species in both allopatric and sympatric populations. Species showed differential expression in genes linked to salt and waterlogging tolerance according to comparisons between species in sympatry, and biological processes related to environmental stimulus appeared as representative among those transcripts associated with edaphic characteristics in each sympatric zone. Hybrids, in their turn, were well differentiated from E. fulgens, but exhibited a similar gene expression profile to flooding-tolerant E. puniceolutem. When compared with parental species, hybrids showed no transcripts with additive pattern of expression and increased expression for almost all transgressive transcripts.
conclusionsThis study sheds light on general mechanisms promoting ecological differentiation and assortative mating, and suggests candidate genes, such as those encoding catalase and calcium-dependent protein kinase, underling adaptation to harsh edaphic conditions in the Neotropical coastal plains. Moreover, it demonstrates that differential gene expression plays a central role in determining ecologically-based phenotypic differences among co-occurring species and their hybrids.
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