Molecular systematics of Dendrobium (Orchidaceae, Dendrobieae) from mainland Asia based on plastid and nuclear sequences

Xiao, Xiang; Schuiteman, André; D, Li; Huang, Wei-Chang; Chung, Shih-Wen; Li, Jianwu; Zhou, Hai-Lang; Jin, Wei-Tao; Lai, Yang-Jun; Li, Zhenyu; Jin, Xiao‐Hua

doi:10.1016/j.ympev.2013.06.009

Cited by 102 publications

(121 citation statements)

References 21 publications

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“…Due to their vegetative similarity, abundant species and lapped morphologic variation within some species (Xu et al, 2015), Dendrobium taxonomy is considered as the most complicated challenges in Orchidaceae (Feng et al, 2015b). As the findings of other molecular researches, this study also found that infrageneric taxa of Dendrobium were not monophyletic (Xiang et al, 2013;Feng et al, 2015a, b). Phylogenetic tree indicated that sect.…”

Section: Figsupporting

confidence: 63%

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Authentication of Chinese Herbal Medicines Dendrobium Species and Phylogenetic Study Based on nrDNA ITS Sequence

Wang¹

2018

IJAB

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Dendrobium plants are one of the most valuable traditional Chinese medicinal herbs. Because of excessive exploitation and habitat degradation, Dendrobium species are endangered. Moreover, during no flowering stages, it is very difficult and even impossible to distinguish Dendrobium species based on morphological characteristics. Therefore, exploiting other DNA barcodes as complementary molecular marker for distinguishing Dendrobium spp. are necessary. Hence, developing an uncomplicated and exact method for authenticating Dendrobium spp. is imperative. In this study, nuclear ribosomal DNA internal transcribed spacer (ITS) sequences of 320 samples from 73 Dendrobium spp. were analyzed. The average intra-and inter-specific genetic divergences were 0.007 and 0.220, respectively. The TaxonGap method indicated that between-species variation of about 80.9% of the species were higher than within-species variation. The neighbor-joining tree showed that 73 Dendrobium spp. were divided into four major clades. Phylogenetic relationships between Dendrobium spp. supported traditional morphological methods and previously published molecular data. This study indicated that ITS region was not only suitable for species identification, but also for phylogenetic analysis of Dendrobium. However, it was also found that ITS could not readily resolve all species determination problems in Dendrobium.

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Section: Figsupporting

confidence: 63%

“…It was reported that sect. Grastidium was monophyletic (Xiang et al, 2013). However, NJ tree of this study showed that except for D. salaccense and D. somai from sect.…”

Section: Figcontrasting

confidence: 58%

Authentication of Chinese Herbal Medicines Dendrobium Species and Phylogenetic Study Based on nrDNA ITS Sequence

Wang¹

2018

IJAB

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“…The congruence between nuclear and plastid data sets was assessed by comparing the topologies and posterior probabilities of the strict consensus trees of two main data partitions, the nuclear ITS, and all plastid regions together, according to the method of Xiang et al [56]. The test was performed by visually comparing the support and resolution of each of the clades in the separate analyses that had a higher posterior probability (PP) > 90 [57].…”

Section: Methodsmentioning

confidence: 99%

Unidirectional transitions in nectar gain and loss suggest food deception is a stable evolutionary strategy in Epidendrum (Orchidaceae): insights from anatomical and molecular evidence

et al. 2018

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BackgroundNectar gain and loss are important flower transitions observed in angiosperms, and are particularly common in orchids. To understand such transitions, the availability of detailed anatomical data and species-level phylogenies are crucial. We investigated the evolution of food deception in Epidendrum, one of the largest orchid genera, using genus phylogeny to map transitions between nectar gain and loss among different clades. Associations between anatomical and histochemical changes and nectar gain and loss were examined using fresh material available from 27 species. The evolution of nectar presence/absence in Epidendrum species was investigated in a phylogenetic framework of 47 species, using one nuclear and five plastid DNA regions available from GenBank and sequenced in this study.ResultsThe presence or absence of nectar was strongly associated with changes in the inner epidermal tissues of nectaries. Nectar-secreting species have unornamented epidermal tissue, in contrast to the unicellular trichomes found on the epidermis of food deceptive species. Bayesian tests confirmed that transitions occurred preferentially from nectar presence to nectar absence across the Epidendrum phylogeny. In addition, independent nectar loss events were found across the phylogeny, suggesting a lack of constraint for these transitions.ConclusionsOrnamented nectaries may play an important role in the deceptive pollination strategy by secreting volatile organic compounds and providing tactile stimuli to pollinators. The recurrent and apparently irreversible pattern of nectar loss in Epidendrum suggests that food deception may constitute an alternative evolutionarily stable strategy, as observed in other orchid groups.Electronic supplementary materialThe online version of this article (10.1186/s12870-018-1398-y) contains supplementary material, which is available to authorized users.

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“…Dendrobium is one of the largest genera of Orchidaceae, which is the largest family in angiosperms (Xiang et al 2013). As D. officinale, Kimura et Migo were Endangered and often adulterated with other cheaper and more common orchids (Pei Yang et al 2016) for its economic and medicinal value.…”

Section: Mitogenome Announcementmentioning

confidence: 99%

The complete chloroplast genome sequence of a new variety of Dendrobium officinale ‘zhong ke IV hao’

Zhang

Lai

et al. 2016

Mitochondrial DNA Part B

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Here, we reported and characterized the complete chloroplast (cp) genome sequence of Dendrobium officinale ‘ zhong ke IV hao’, a new variety from self-cross plants of imported Sichuan D. officinale , obtained exclusively using Illumina and PacBio sequencing technology. The genome size is 152,185 bp, containing a large single copy (LSC) region (85,094 bp) and a small single copy(SSC) region (14,521 bp) that were separated by two inverted repeat (IRs) regions (26,285 bp).The GC content was 37.46%. In total, the complete cp DNA contains 89 protein-coding genes, 30 tRNA genes, and 8 rRNA genes. Twelve genes contained one or two introns. Phylogenetic analyses showed that the chloroplast genome of D officinale ‘zhong ke IV hao’ is related to that of the traditional D.officinale .

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Molecular systematics of Dendrobium (Orchidaceae, Dendrobieae) from mainland Asia based on plastid and nuclear sequences

Cited by 102 publications

References 21 publications

Authentication of Chinese Herbal Medicines Dendrobium Species and Phylogenetic Study Based on nrDNA ITS Sequence

Authentication of Chinese Herbal Medicines Dendrobium Species and Phylogenetic Study Based on nrDNA ITS Sequence

Unidirectional transitions in nectar gain and loss suggest food deception is a stable evolutionary strategy in Epidendrum (Orchidaceae): insights from anatomical and molecular evidence

The complete chloroplast genome sequence of a new variety of Dendrobium officinale ‘zhong ke IV hao’

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