ArticleGenome biology and evolution2016
Lineage-Specific Reductions of Plastid Genomes in an Orchid Tribe with Partially and Fully Mycoheterotrophic Species.
Article in Genome biology and evolution, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.
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58 citing papers in PubMed, 126 citations in OpenAlex.
- Comparative plastome analyses reveal life-form-associated selection signatures in Orchidaceae.BMC plant biology · 2026Article
- Mitogenome characterization and organellar genome evolution in achlorophyllous orchid Chamaegastrodia shikokiana Makino & F.Maek. (Orchidaceae).BMC plant biology · 2026Article
- Mycoheterotrophy and plastid genome evolution in the early-diverging epidendroid orchid tribe Nervilieae: independent transitions inAoB PLANTS · 2026Article
- Repeated loss of plastid NDH during evolution of land plants.Annals of botany · 2026Review
- Comprehensive species sampling reveals pervasive pseudogenization and recurrent complete loss of plastid ndh genes in the genus Cymbidium (Orchidaceae).BMC plant biology · 2025Article
- An updated phylogeny of Boraginales based on the Angiosperms353 probe set: a roadmap for understanding morphological evolution.Annals of botany · 2025Article
- Elucidation of the phylogeny of Cucurbitaceae, particularly Trichosanthes, based on plastome data and nuclear single-copy genes.BMC plant biology · 2025Article
- Plastome and transcriptome analysis reveals a degenerated photosynthesis-related pathway in the mycoheterotrophic vanilloid orchid Cyrtosia lindleyana.BMC plant biology · 2025Article
- Plastome phylogenomics unravels the evolutionary relationships and biogeographic history of Chloranthaceae.BMC plant biology · 2025Article
- Complete chloroplast genome ofMitochondrial DNA. Part B, Resources · 2025Article
- Organellar phylogenomics at the epidendroid orchid base, with a focus on the mycoheterotrophic Wullschlaegelia.Annals of botany · 2024Article
- The chloroplast genome of Cephalanthera nanchuanica (Orchidaceae): comparative and phylogenetic analysis with other Neottieae species.BMC genomics · 2024Article
- The Complete Chloroplast Genomes ofInternational journal of molecular sciences · 2024Article
- Plastid phylogenomics reveals evolutionary relationships in the mycoheterotrophic orchid genusFrontiers in plant science · 2024Article
- Molecular phylogenetic analyses reveal multiple long-distance dispersal events and extensive cryptic speciation inFrontiers in plant science · 2024Article
- Phylogenetic position and plastid genome structure ofFrontiers in plant science · 2024Article
- Comparative Analysis ofGenes · 2023Article
- Characterization ofInternational journal of molecular sciences · 2023Article
- Comparative and phylogenetic analysis of Chiloschista (Orchidaceae) species and DNA barcoding investigation based on plastid genomes.BMC genomics · 2023Article
- Characteristics and Comparative Analysis of Seven Complete Plastomes ofInternational journal of molecular sciences · 2023Article
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Authors and funding
10 authors at 8 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The plastid genome (plastome) of heterotrophic plants like mycoheterotrophs and parasites shows massive gene losses in consequence to the relaxation of functional constraints on photosynthesis. To understand the patterns of this convergent plastome reduction syndrome in heterotrophic plants, we studied 12 closely related orchids of three different lifeforms from the tribe Neottieae (Orchidaceae). We employ a comparative genomics approach to examine structural and selectional changes in plastomes within Neottieae. Both leafy and leafless heterotrophic species have functionally reduced plastid genome. Our analyses show that genes for the NAD(P)H dehydrogenase complex, the photosystems, and the RNA polymerase have been lost functionally multiple times independently. The physical reduction proceeds in a highly lineage-specific manner, accompanied by structural reconfigurations such as inversions or modifications of the large inverted repeats. Despite significant but minor selectional changes, all retained genes continue to evolve under purifying selection. All leafless Neottia species, including both visibly green and nongreen members, are fully mycoheterotrophic, likely evolved from leafy and partially mycoheterotrophic species. The plastomes of Neottieae span many stages of plastome degradation, including the longest plastome of a mycoheterotroph, providing invaluable insights into the mechanisms of plastome evolution along the transition from autotrophy to full mycoheterotrophy.
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