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The Complete Plastome Sequences of Four Orchid Species: Insights into the Evolution of the Orchidaceae and the Utility of Plastomic Mutational Hotspots
Orchidaceae (orchids) is the largest family in the monocots, including about 25,000 species in 880 genera and five subfamilies. Many orchids are highly valued for their beautiful and long-lasting
Comparative Chloroplast Genomes of Photosynthetic Orchids: Insights into Evolution of the Orchidaceae and Development of Molecular Markers for Phylogenetic Applications
TLDR
The complete chloroplast genomes of the medicinal plant Dendrobium officinale and the ornamental orchid Cypripedium macranthos are reported, demonstrating their gene content and order and potential RNA editing sites, and fifteen highly divergent protein-coding genes were identified, which are useful for phylogenetic analyses in orchids.
Mutational Biases and GC-Biased Gene Conversion Affect GC Content in the Plastomes of Dendrobium Genus
TLDR
It is suggested that both mutational biases and gBGC affect GC content in the plastomes of Dendrobium genus, which is one of the largest genera in the orchid species.
Iteration expansion and regional evolution: phylogeography of Dendrobium officinale and four related taxa in southern China
TLDR
The phylogeographical structure of D. officinale revealed that core natural distribution regions might have served as its glacial refuges, and rapid radiation and genetic drift appeared to drive the species’ diversification.
Genetic diversity assessment and ex situ conservation strategy of the endangered Dendrobium officinale (Orchidaceae) using new trinucleotide microsatellite markers
TLDR
The analysis using STRUCTURE revealed evident differences in genetic composition between each germplasm collection and its wild population, probably because the D. officinale individuals with distinct genotypes in each wild population were unevenly selected for establishing its germ plasm collection.
Phylogeography of the endangered orchid Dendrobium moniliforme in East Asia inferred from chloroplast DNA sequences
TLDR
The results supported the hypothesis that glacial refugia were maintained on different spatial-temporal scales in the SJFR during the last glacial maximum or earlier cold periods, suggesting that Quaternary refugial isolation promoted allopatric speciation of D. moniliforme in East Asia.
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