Phylogenetic analysis of Neottia japonica (Orchidaceae) based on ITS and matK regions

So, Ji-Hyeon; Lee, Nam Sook

doi:10.11110/kjpt.2020.50.4.385

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…comprises 81 accepted species, including 63 autotrophic species and 18 mycoheterotrophic species ( https://powo.science.kew.org , Mu et al 2017 ; Chen and Jin 2021 ), distributed widely in north temperate areas with a few species extending into alpine regions in the mountains of tropical Asia ( Govaerts et al 2019 ; Chen and Jin 2021 ). East Asia is one of the diversity centers for this genus with more than 70% of Neottia species occurring in this region ( So and Lee 2020 ). Formerly, Neottia was divided into Listera and Neottia ( Bentham 1881 ; Pfitzer 1887 ; Schlechter 1926 ; Brieger et al 1974; Dressler 1981 ; Rasmussen 1982 ) by the distinct morphological differences possessed by autotrophic plants ( Listera ) with two opposite leaves (sometimes three or more) in the middle of the stem, while mycoheterotrophic plants are achlorophyllous and possess densely fleshy bird's nest like roots.…”

Section: Introductionmentioning

confidence: 99%

Neottia bifidus (Orchidaceae, Epidendroideae, Neottieae), a new mycoheterotrophic species from Guizhou, China

Wang,

Wu,

Tan

et al. 2023

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Neottia bifidus, a new mycoheterotrophic orchid, found in Maolan National Nature Reserve in Guizhou Province, China, is described and illustrated here. The new species is close to N. nidus-avis, N. kiusiana and N. papilligera but differs in having a finely pubescent rachis with fewer flowers, a finely pubescent pedicel, and a fishtail-shaped lip that is deeply bilobed to the middle of the lip, with the lobes diverging at an acute angle (45°) to each other and mesochile with many papillae. Additionally, N. bifidus is well supported as a new species by molecular phylogenetic results based on ITS and chloroplast genome. The chloroplast genome of the novelty, which contains an LSC region of 33,819 bp, SSC region of 5,312 bp and IRs of 46,762 bp was assembled and annotated. A key to mycoheterotrophic Neottia species in China is also provided.

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Section: Introductionmentioning

confidence: 99%

Neottia bifidus (Orchidaceae, Epidendroideae, Neottieae), a new mycoheterotrophic species from Guizhou, China

Wang,

Wu,

Tan

et al. 2023

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Habitat-related plastome evolution in the mycoheterotrophic Neottia listeroides complex (Orchidaceae, Neottieae)

Shao,

Wang,

Chen

et al. 2023

BMC Plant Biol

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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. To illustrate evolutionary mechanisms underlying such divergence, we analyzed plastome features and molecular evolution of 15 plastomes of Neottia listeroides complex from different forest habitats. Results These 15 samples of Neottia listeroides complex split into three clades according to their habitats approximately 6 million years ago: Pine Clade, including ten samples from pine-broadleaf mixed forests, Fir Clade, including four samples from alpine fir forests and Fir-willow Clade with one sample. Compared with those of Pine Clade members, plastomes of Fir Clade members show smaller size and higher substitution rates. Plastome size, substitution rates, loss and retention of plastid-encoded genes are clade-specific. We propose to recognized six species in N. listeroides complex and slightly modify the path of plastome degradation. Conclusions Our results provide insight into the evolutionary dynamics and discrepancy of closely related mycoheterotrophic orchid lineages at a high phylogenetic resolution.

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New Cytogenetic Data for the Neottieae Tribe (Orchidaceae) in the Mediterranean Region

Turco,

Wagensommer,

Albano

et al. 2024

Plants

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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 Cephalanthera, Limodorum, Epipactis, and Neottia (including Listera). 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. In the Epipactis group, it is noteworthy that when using the Giemsa banding technique, certain species (e.g., E. placentina, E. meridionalis) with a chromosome number of 2n = 38 were observed to exhibit a conspicuous wide band of constitutive heterochromatin on the long arm of the third pair in a subcentromeric position, resembling what has been observed in E. helleborine. These differences also have the potential to contribute to the diversification of these species. Based on the karyological results obtained, a hypothesis regarding the origin of certain species within the E. helleborine group is proposed. Additionally, karyological analyses conducted on a specimen of E. microphylla revealed chromosome counts ranging from 36 to 40. Somatic metaphases exhibited evident structural alterations in certain chromosomes, showing rearrangements probably caused by translocation phenomena. Based on the data obtained from the species within the studied genera, it is conceivable that variations in chromosomes, both structurally and in the distribution of constitutive heterochromatin, exert a significant influence on the evolution of the karyotype. Moreover, in many entities belonging to the Neottieae tribe, these processes may also contribute to the diversification of the phenotype in some instances.

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Phylogenetic analysis of Neottia japonica (Orchidaceae) based on ITS and matK regions

Cited by 3 publications

References 16 publications

Neottia bifidus (Orchidaceae, Epidendroideae, Neottieae), a new mycoheterotrophic species from Guizhou, China

Neottia bifidus (Orchidaceae, Epidendroideae, Neottieae), a new mycoheterotrophic species from Guizhou, China

Habitat-related plastome evolution in the mycoheterotrophic Neottia listeroides complex (Orchidaceae, Neottieae)

New Cytogenetic Data for the Neottieae Tribe (Orchidaceae) in the Mediterranean Region

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Phylogenetic analysis of Neottia japonica (Orchidaceae) based on ITS and matK regions

Cited by 3 publications

References 16 publications

﻿Neottia bifidus (Orchidaceae, Epidendroideae, Neottieae), a new mycoheterotrophic species from Guizhou, China

﻿Neottia bifidus (Orchidaceae, Epidendroideae, Neottieae), a new mycoheterotrophic species from Guizhou, China

Habitat-related plastome evolution in the mycoheterotrophic Neottia listeroides complex (Orchidaceae, Neottieae)

New Cytogenetic Data for the Neottieae Tribe (Orchidaceae) in the Mediterranean Region

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Neottia bifidus (Orchidaceae, Epidendroideae, Neottieae), a new mycoheterotrophic species from Guizhou, China

Neottia bifidus (Orchidaceae, Epidendroideae, Neottieae), a new mycoheterotrophic species from Guizhou, China