Neottieae comprise about 150-200 species and are distributed mainly in temperate and subtropical zones of the northern hemisphere. Mycoheterotrophy is common in Neottieae. Based on three DNA markers and a broad sampling of Neottieae, these results indicate that Neottieae is strongly supported as monophyletic and is sister to the remaining genera of Neottieae. and s.s. are deeply nested within . The habit of leafless mycotrophy has independently evolved at least three times in Neottieae, one in , another in s.l. and the third in the clade formed by and .
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The chloroplast genome of Cephalanthera nanchuanica (Orchidaceae): comparative and phylogenetic analysis with other Neottieae species.
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Key Laboratory for Specialty Agricultural Germplasm Resources Development and Utilization of Guizhou Province, Liupanshui Normal University, Liupanshui, 553004, China.
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- Cephalanthera nanchuanica is a terrestrial orchid endemic to China and is considered a second-grade protected plant due to its limited distribution; it was reclassified from the genus Tangtsinia to Cephalanthera based on both morphological and molecular evidence.
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This work presents a summary of cytogenetic data, including new information, on several species within the tribe Neottieae, with an update of the karyotype for 23 species belonging to the genera , , , and (including ). Each of these four genera also presents distinctive chromosomal features, such as bimodal karyotypes. Our research includes insights into the distribution of constitutive heterochromatin, measured using C-banding and, in some cases, specific fluorochromes for the detection of A-T- and G-C-rich DNA.
View Article and Find Full Text PDF (Orchidaceae, Epidendroideae, Neottieae), a new mycoheterotrophic species from Guizhou, China.
PhytoKeys
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The Orchid Conservation & Research Center of Shenzhen and the National Orchid Conservation Center of China, Shenzhen Key Laboratory for Orchid Conservation and Utilization, Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization, Shenzhen, 518114, Guangdong, China Shenzhen Key Laboratory for Orchid Conservation and Utilization, Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization Shenzhen China.
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Habitat-related plastome evolution in the mycoheterotrophic Neottia listeroides complex (Orchidaceae, Neottieae).
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State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, China.
Background: Mycoheterotrophs, acquiring organic carbon and other nutrients from mycorrhizal fungi, have evolved repeatedly with substantial plastid genome (plastome) variations. To date, the fine-scale evolution of mycoheterotrophic plastomes at the intraspecific level is not well-characterized. A few studies have revealed unexpected plastome divergence among species complex members, possibly driven by various biotic/abiotic factors.
View Article and Find Full Text PDF (Orchidaceae, Neottieae), a new mycoheterotrophic species from peninsular Thailand.
PhytoKeys
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Faculty of Natural Resources, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand Prince of Songkla University Songkhla Thailand.
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