An assessment of the Chinese medicinal Dendrobium industry: Supply, demand and sustainability

Cheng, Junsheng; Dang, Pei-Pei; Zhao, Zhe; Yuan, Liang-Chen; Zhou, Zhihua; Wolf, Daniël De; Luo, Yan

doi:10.1016/j.jep.2018.09.001

Cited by 80 publications

(72 citation statements)

References 33 publications

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“…It is also a famous traditional Chinese medicinal plant. With the increasing recognition of its nutraceutical and pharmaceutical values, production of D. officinale in China increased rapidly from 3900 ha in 2014 to 7066 ha in 2016 (Cheng et al, 2019). The increased production acreage was also accompanied by high demand for new cultivars that can produce higher biomass with increased polysaccharide contents.…”

Section: Discussionmentioning

confidence: 99%

“…Dendrobium Sw. is one of the largest genera in the family Orchidaceae, and it comprises more than 1500 species (Cheng et al, 2019) that are widely distributed in Asia, Australia, and Europe and produced as ornamental flowering plants (Lam et al, 2015). In China, Dendrobium, commonly known as ''Shi Hu,'' has been used as traditional Chinese medicine for thousands of years (Cheng et al, 2019). More than 78 species of Dendrobium are native to China, and 50 of them have medicinal value (Chen et al, 2012;Xu et al, 2013).…”

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confidence: 99%

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Changes in Morphological Characteristics, Regeneration Ability, and Polysaccharide Content in Tetraploid Dendrobium officinale

Pham¹,

Li²,

Guo³

et al. 2019

horts

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Dendrobium officinale Kimura et Migo is a famous traditional Chinese medicinal plant. It produces various phytochemicals, particularly polysaccharides, which have nutraceutical and pharmaceutical values. To increase its biomass production and polysaccharide content, our breeding program has generated a series of polyploid cultivars through colchicine treatment of protocorm-like bodies (PLBs). The present study compared two tetraploid cultivars, 201-1-T1 and 201-1-T2, with their diploid parental cultivar, 201-1, in an established in vitro culture system. Tetraploid ‘201-1-T1’ and ‘201-1-T2’ had shorter leaves and shorter and thicker stems and roots, and they produced higher biomass compared with the diploid cultivar. The length and width of stomata significantly increased, but stomatal density decreased in tetraploid cultivars. The PLB induction rates from the stem node explants of the tetraploid cultivars were significantly higher than those of diploid. However, the PLB proliferation of tetraploids was lower than that of the diploid. The mean number of plantlets regenerated from tetraploid PLBs was also lower than that of the diploid after 4 months of culture. Polysaccharide contents in stems, leaves, and roots of 6-month-old tetraploid plantlets were significantly higher than those of diploids. The polysaccharide content in the stem of ‘201-1-T1’ was 12.70%, which was a 2-fold increase compared with the diploid cultivar. Our results showed that chromosome doubling could be a viable way of improving D. officinale in biomass and polysaccharide production.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Changes in Morphological Characteristics, Regeneration Ability, and Polysaccharide Content in Tetraploid Dendrobium officinale

Pham¹,

Li²,

Guo³

et al. 2019

horts

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“…and D. mbriatum Hook. are uniformly classi ed in the item of Dendrobium with dendrobine, erianin and dendrophenol as the active ingredients, respectively [40]. Modern pharmacological study suggested that D. catenatum possesses hepatoprotective, anticancer, hypoglycemic, antifatigue, antioxidant, anticonstipation, hypoglycemic, gastric ulcer protective, and antihypertensive effects, immunoenhancement, and so on [41].…”

Section: Introductionmentioning

confidence: 99%

Genome-Wide Identification of Histone Acetyltransferases and Deacetylases in Epiphytic Orchid Plant Dendrobium Catenatum

Jiang

Tian

et al. 2020

Preprint

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Background: Dendrobium catenatum is a kind of precious Traditional Chinese Medicine, and possesses unique developmental programs and epiphytic lifestyle. Histone acetyltransferases (HATs) and histone deacetylases (HDACs) are responsible for maintenance of histone acetylation homeostasis, and they are widely involved in developmental regulation and stress responses via remodeling chromatin structure, but their biological functions in orchid plants remain largely unknown.Results: Here we identified 8 HAT genes and 14 HDAC genes from D. catenatum genome. We carried out phylogenetic construction, gene structure and domain architecture analysis of these D. catenatum HAT/HDAC (DcHAT/DcHDAC) proteins using the well-defined homologs from the model plants Arabidopsis thaliana and Oryza sativa as references. DcHAT proteins can be classified into four families: GNAT family (3 members), MYST family (2), CBP family (2), and TAFII250 family (1), and DcHDAC proteins can be grouped into three families: RPD3/HDA1 family (10), SIR2 family (2), and HD2 family (2), in accordance with previously described classification. Cis-acting element analysis indicated that the promoter regions of DcHAT/DcHDAC genes contain diverse stress-responsive elements. Subcellular localization predictions suggested that DcHAT/DcHDAC proteins might be localized in nucleus or/and cytoplasm. Spatiotemporal expression profiling showed that DcHAT/DcHDAC genes generally exhibit either universal or specific expression pattern in different tissues and organs. Finally, stress response assay suggested drought treatment significantly represses the expression of DcHAG1 and DcHDA14, cold exposure evidently influences the expression of DcHAG1 and DcHDT1, and heat shock has a broad impact on the expression of DcHAT/DcHDAC genes.Conclusions: In this study, we reveal the identification and expression profiles of DcHATs and DcHDACs in epiphytic orchid plant D. catenatum, indicating their roles in the regulation of both long-term developmental programs and short-term stress responses. This study provides a foundation for in-depth functional excavation of HATs/HDACs associated with dynamic histone acetylation levels in orchids.

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“…The species has been reported to have a natural habitat at an elevation of 1200 m -1400 m (Ghimire, 2008). Cheng et al (2019) reported a comprehensive investigation of the diversity of Dendrobium species used in Traditional Chinese medicine, their supply and demand, as well as the development of Dendrobium industry.…”

Section: Introductionmentioning

confidence: 99%

In vitro seed germination and seedling growth of the orchid Dendrobium primulinum Lindl.

Adhikari¹,

Pant²

2019

Afr. J. Plant Sci.

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Dendrobium primulinum Lindl. (D. Primulinum L.) is one of the important epiphytic orchid species for horticultural and commercial use. It is listed as a rare and critically endangered species of orchid. The present study is intended to conserve the orchid species through the micropropagation technique. The in vitro seed germination and seedling growth was carried out by taking a mature pod of D. Primulinum L. in Murashige and Skoog (MS) media, and the MS media supplemented with a varied concentration (0.5, 1.0, 1.5 and 2 mg/L) of 6-benzylaminopurine (BAP), and a fixed concentration (0.5 mg/L) of αnaphthalene acetic acid (NAA). Sequential phases of seed germination, protocorm formation, and seedling development in the presence of growth regulators were determined in the study. The significance of hormonal effects was determined by using One-Way Analysis of Variance (ANOVA, p≤0.05). The seed germination started after two weeks of culture in the media supplemented with BAP. The maximum seedling growth was obtained in the media supplemented with 1.5 mg/L of BAP. Although the hormone-free basal medium revealed an ideal condition for seed germination and spherules formation, the presence of an appropriate concentration of growth regulators such as 0.5 mg/L NAA or a combined 0.5 mg/L BAP + 0.5 mg/L NAA expressed a synergistic effect to enhance the protocorm formation and seedling development.

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An assessment of the Chinese medicinal Dendrobium industry: Supply, demand and sustainability

Cited by 80 publications

References 33 publications

Changes in Morphological Characteristics, Regeneration Ability, and Polysaccharide Content in Tetraploid Dendrobium officinale

Changes in Morphological Characteristics, Regeneration Ability, and Polysaccharide Content in Tetraploid Dendrobium officinale

Genome-Wide Identification of Histone Acetyltransferases and Deacetylases in Epiphytic Orchid Plant Dendrobium Catenatum

In vitro seed germination and seedling growth of the orchid Dendrobium primulinum Lindl.

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