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https://www.readbyqxmd.com/read/28822173/-breakthrough-in-key-science-and-technologies-in-dendrobium-catenatum-industry
#1
Ji-Ping Si, Qi Wang, Zhong-Jian Liu, Jing-Jing Liu, Yi-Bo Luo
In view of the significant difficulties of propagation, planting and simple product in Dendrobium catenatum(D. officinale)industry development, a series of research were carried out. Genome study showed that D. catenatum is a specie of diploid with 38 chromosomes and 28 910 protein-coding genes. It was identified that specific genes accumulated in different organs at the transcriptome level. We got an insight into the gene regulation mechanism of the loss of the endospermous seed, the wide ecological adaptability and the synthesis of polysaccharides, which provided a theoretical basis for genetic engineering breeding and development and utilization of active pharmaceutical ingredients...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28797234/succinyl-proteome-profiling-of-dendrobium-officinale-an-important-traditional-chinese-orchid-herb-revealed-involvement-of-succinylation-in-the-glycolysis-pathway
#2
Shangguo Feng, Kaili Jiao, Hong Guo, Mengyi Jiang, Juan Hao, Huizhong Wang, Chenjia Shen
BACKGROUND: Lysine succinylation is a ubiquitous and important protein post-translational modification in various eukaryotic and prokaryotic cells. However, its functions in Dendrobium officinale, an important traditional Chinese orchid herb with high polysaccharide contents, are largely unknown. RESULTS: In our study, LC-MS/MS was used to identify the peptides that were enriched by immune-purification with a high-efficiency succinyl-lysine antibody. In total, 314 lysine succinylation sites in 207 proteins were identified...
August 10, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28796073/effect-of-polysaccharide-of-dendrobium-candidum-on-proliferation-and-apoptosis-of-human-corneal-epithelial-cells-in-high-glucose
#3
Qiangxiang Li, Jing Chen, Yajia Li, Ting Chen, Jing Zou, Hua Wang
BACKGROUND: The aim of the study was to observe the effect of polysaccharide of dendrobium candidum (PDC) and high glucose on proliferation, apoptosis of human corneal epithelial cells (HCEC). METHODS: The MTT method was used to screen and take the optimal high-glucose concentration, treatment time, and PDC concentration using HCEC and divide it into 4 groups: control group (C), high glucose group (HG), PDC group, and HG + PDC group. We observed and compared the effect of the 4 groups on HCEC proliferation by MTT, apoptosis by Annexin V-FITC/PI double fluorescent staining and flow cytometry (FCM), and expression of bax mRNA and bcl-2 mRNA by RT-qPCR...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28769988/chemical-differentiation-of-dendrobium-officinale-and-dendrobium-devonianum-by-using-hplc-fingerprints-hplc-esi-ms-and-hptlc-analyses
#4
Zi Ye, Jia-Rong Dai, Cheng-Gang Zhang, Ye Lu, Lei-Lei Wu, Amy G W Gong, Hong Xu, Karl W K Tsim, Zheng-Tao Wang
The stems of Dendrobium officinale Kimura et Migo (Dendrobii Officinalis Caulis) have a high medicinal value as a traditional Chinese medicine (TCM). Because of the limited supply, D. officinale is a high priced TCM, and therefore adulterants are commonly found in the herbal market. The dried stems of a closely related Dendrobium species, Dendrobium devonianum Paxt., are commonly used as the substitute; however, there is no effective method to distinguish the two Dendrobium species. Here, a high performance liquid chromatography (HPLC) method was successfully developed and applied to differentiate D...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28767746/exogenous-catalase-and-pyruvate-dehydrogenase-improve-survival-and-regeneration-and-affect-oxidative-stress-in-cryopreserved-dendrobium-nobile-protocorm-like-bodies
#5
W Di, M X Jia, J Xu, B L Li, Y Liu
BACKGROUND: Reactive oxygen species (ROS)-induced oxidative damage is responsible for viability loss in plant tissues following cryopreservation. Antioxidants may improve viability by preventing or repairing the injury. OBJECTIVE: This work aimed at studying the effect of catalase (CAT) and pyruvate dehydrogenase (PDH), which are involved in ROS metabolism and are differentially expressed during pollen cryopreservation, for cryopreservation of Dendrobium nobile Lindl...
May 2017: Cryo Letters
https://www.readbyqxmd.com/read/28761496/antioxidant-properties-of-crude-extract-partition-extract-and-fermented-medium-of-dendrobium-sabin-flower
#6
Farahziela Abu, Che Norma Mat Taib, Mohamad Aris Mohd Moklas, Sobri Mohd Akhir
Antioxidant properties of crude extract, partition extract, and fermented medium from Dendrobium sabin (DS) flower were investigated. The oven-dried DS flower was extracted using 100% methanol (w/v), 100% ethanol (w/v), and 100% water (w/v). The 100% methanolic crude extract showed the highest total phenolic content (40.33 ± mg GAE/g extract) and the best antioxidant properties as shown by DPPH, ABTS, and FRAP assays. A correlation relationship between antioxidant activity and total phenolic content showed that phenolic compounds were the dominant antioxidant components in this flower extract...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28755575/protective-effect-of-dendrobium-officinale-polysaccharides-on-h2o2-induced-injury-in-h9c2-cardiomyocytes
#7
Xiaoyan Zhao, Mengmeng Dou, Zhihao Zhang, Duoduo Zhang, Chengzhi Huang
The preliminary studies have shown that Dendrobium officinale possessed therapeutic effects on hypertension and atherosclerosis. Studies also reported that Dendrobium officinale polysaccharides showed antioxidant capabilities. However, little is known about its effects on myocardial cells under oxidative stress. The present study was designed to study the protective effect of Dendrobium officinale polysaccharides against H2O2-induced oxidative stress in H9c2 cells. MTT assay was carried out to determine the cell viability of H9c2 cells when pretreated with Dendrobium officinale polysaccharides...
July 26, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28736679/chloroplast-genome-sequence-annotation-of-i-dendrobium-nobile-i-asparagales-orchidaceae-an-endangered-medicinal-orchid-from-northeast-india
#8
Devendra Biswal, Ruchishree Konhar, Manish Debnath, Sriram Parameswaran, Durai Sundar, Pramod Tandon
Orchidaceae constitutes one of the largest families of angiosperms. Owing to the significance of orchids in plant biology, market needs and current sustainable technology levels, basic research on the biology of orchids and their applications in the orchid industry is increasing. Although chloroplast (cp) genomes continue to be evolutionarily informative, there is very limited information available on orchid chloroplast genomes in public repositories. Here, we report the complete cp genome sequence of Dendrobium nobile from Northeast India (Orchidaceae, Asparagales), bearing the GenBank accession number KX377961, which will provide valuable information for future research on orchid genomics and evolution, as well as the medicinal value of orchids...
May 19, 2017: PLoS Currents
https://www.readbyqxmd.com/read/28730971/apoptosis-and-anti-cancer-drug-discovery-the-power-of-medicinal-fungi-and-plants
#9
Jack Ho Wong, Stephen Cho Wing Sze, Tzi Bun Ng, Randy Chi Fai Cheung, Chit Tam, Kalin Yanbo Zhang, Xiuli Dan, Yau Sang Chan, William Chi Shing Cho, Charlene Cheuk Wing Ng, Mary Miu Yee Waye, Weicheng Liang, Jinfang Zhang, Jie Yang, Xiuyun Ye, Juan Lin, Xiujuan Ye, Hexiang Wang, Fang Liu, David Wai Chan, Hextan Yuen Sheung Ngan, Ou Sha, Guohui Li, Ryan Tse, Tak Fu Tse, Helen Chan
The purpose of this account is to review the compounds capable of eliciting mitochondria-mediated apoptosis in cancer cells produced by medicinal fungi and plants. The medicinal fungi discussed encompass Cordyceps, Ganoderma species, Coriolus versicolor and Hypsizygus marmoreus. The medicinal plants discussed comprise Astragalus complanatus , Dendrobium spp,Dioscorea spp, Glycyrrhiza spp, Panax notoginseng, Panax ginseng, and Momordica charantia. These compounds have the potential of development into anticancer drugs...
July 20, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28722145/dendrobium-nobile-lindl-alkaloids-regulate-metabolism-gene-expression-in-livers-of-mice
#10
Yun-Yan Xu, Ya-Sha Xu, Yuan Wang, Qin Wu, Yuan-Fu Lu, Jie Liu, Jing-Shan Shi
OBJECTIVES: In our previous studies, Dendrobium nobile Lindl. alkaloids (DNLA) has been shown to have glucose-lowering and antihyperlipidaemia effects in diabetic rats, in rats fed with high-fat diets, and in mice challenged with adrenaline. This study aimed to examine the effects of DNLA on the expression of glucose and lipid metabolism genes in livers of mice. METHODS: Mice were given DNLA at doses of 10-80 mg/kg, po for 8 days, and livers were removed for total RNA and protein isolation to perform real-time RT-PCR and Western blot analysis...
July 19, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28691858/structural-characterisation-of-a-water-soluble-polysaccharide-from-tissue-cultured-dendrobium-huoshanense-c-z-tang-et-s-j-cheng
#11
Hua-Yang Si, Nai-Fu Chen, Nai-Dong Chen, Cheng Huang, Jun Li, Hui Wang
A water-soluble polysaccharide TC-DHPA4 with a molecular weight of 8.0 × 10(5) Da was isolated from tissue-cultured Dendrobium huoshanense by anion exchange and gel permeation chromatography. Monosaccharide analysis revealed that the homogeneous polysaccharide was made up of rhamnose, arabinose, mannose, glucose, galactose and glucuronic acid with a molar ratio of 1.28:1:1.67:4.71:10.43:1.42. The sugar residue sequence analysis based on the GC-MS files and NMR spectra indicated that the backbone of TC-DHPA4 consisted of the repeated units:→6)-β-Galp-(1→6)-β-Galp-(1→4)-β-GlcpA-(1→6)-β-Glcp-(1→6)-β-Glcp-(→...
July 10, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28690630/lack-of-s-rnase-based-gametophytic-self-incompatibility-in-orchids-suggests-that-this-system-evolved-after-the-monocot-eudicot-split
#12
Shan-Ce Niu, Jie Huang, Yong-Qiang Zhang, Pei-Xing Li, Guo-Qiang Zhang, Qing Xu, Li-Jun Chen, Jie-Yu Wang, Yi-Bo Luo, Zhong-Jian Liu
Self-incompatibility (SI) is found in approximately 40% of flowering plant species and at least 100 families. Although orchids belong to the largest angiosperm family, only 10% of orchid species present SI and have gametophytic SI (GSI). Furthermore, a majority (72%) of Dendrobium species, which constitute one of the largest Orchidaceae genera, show SI and have GSI. However, nothing is known about the molecular mechanism of GSI. The S-determinants of GSI have been well characterized at the molecular level in Solanaceae, Rosaceae, and Plantaginaceae, which use an S-ribonuclease (S-RNase)-based system...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28685256/influence-of-host-tree-species-on-isolation-and-communities-of-mycorrhizal-and-endophytic-fungi-from-roots-of-a-tropical-epiphytic-orchid-dendrobium-sinense-orchidaceae
#13
Xiaoming Wang, Yijia Li, Xiqiang Song, Qianwan Meng, Jie Zhu, Ying Zhao, Wengang Yu
Most studies on the host preference of orchids have focused on the association between orchids and host characteristics, but little is known about the differences of mycorrhizal and endophytic fungal communities in epiphytic orchids growing on different host tree species. We selected Dendrobium sinense, a tropical epiphytic orchid, to determine if fungal endophytes from the roots of D. sinense were preferentially correlated with host tree species. Fifty-six fungal operational taxonomic units (OTUs) from 36 host trees were identified...
July 6, 2017: Mycorrhiza
https://www.readbyqxmd.com/read/28684298/polysaccharides-of-dendrobium-officinale-kimura-migo-protect-gastric-mucosal-cell-against-oxidative-damage-induced-apoptosis-in-vitro-and-in-vivo
#14
Qiang Zeng, Chun-Hay Ko, Wing-Sum Siu, Long-Fei Li, Xiao-Qiang Han, Liu Yang, Clara Bik-San Lau, Jiang-Miao Hu, Ping-Chung Leung
ETHNOPHARMACOLOGICAL RELEVANCE: Dendrobium officinale Kimura & Migo (DO) is a valuable Traditional Chinese Medicine to nourish stomach, in which polysaccharides are identified as active ingredients. However, limited scientific evidences have been reported on the gastroprotective efficacy of DO. The aim of the current study was to investigate the protective effects and underlying mechanism of polysaccharides from DO(DOP) on gastric mucosal injury. MATERIAL AND METHODS: For in vitro study, HFE145 cells were pretreated with DOP before induction of cell apoptosis by H2O2...
July 4, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28656215/syringic-acid-inhibits-apoptosis-pathways-via-downregulation-of-p38mapk-and-jnk-signaling-pathways-in-h9c2-cardiomyocytes-following-hypoxia-reoxygenation-injury
#15
Shou-Kun Ding, Li-Xia Wang, Lei-Sheng Guo, Ping Luo, Juan-Juan Du, Zong-Lei Zhao, Guang-Gong Wang
Syringic acid (SA), a naturally occur-ring O‑methy-lated trihydroxybenzoic acid monomer extracted from Dendrobium nobile Lindl., has been demonstrated to attenuate renal ischemia‑reperfusion (I/R) injury. However, the role of SA in myocardial I/R injury is unclear. The present study aimed to clarify the cardioprotective effect of SA in myocardial I/R injury in vitro and explore the potential molecular mechanisms. In the present study, it was revealed that pretreatment with SA increased the viability and inhibited oxidant stress in H9c2 cardiomyocytes that had suffered hypoxia/reoxygenation (H/R)...
August 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28638388/using-in-situ-symbiotic-seed-germination-to-restore-over-collected-medicinal-orchids-in-southwest-china
#16
Shi-Cheng Shao, Kevin S Burgess, Jennifer M Cruse-Sanders, Qiang Liu, Xu-Li Fan, Hui Huang, Jiang-Yun Gao
Due to increasing demand for medicinal and horticultural uses, the Orchidaceae is in urgent need of innovative and novel propagation techniques that address both market demand and conservation. Traditionally, restoration techniques have been centered on ex situ asymbiotic or symbiotic seed germination techniques that are not cost-effective, have limited genetic potential and often result in low survival rates in the field. Here, we propose a novel in situ advanced restoration-friendly program for the endangered epiphytic orchid species Dendrobium devonianum, in which a series of in situ symbiotic seed germination trials base on conspecific fungal isolates were conducted at two sites in Yunnan Province, China...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28631817/application-of-high-resolution-melting-analysis-for-authenticity-testing-of-valuable-dendrobium-commercial-products
#17
Xiaoman Dong, Chao Jiang, Yuan Yuan, Daiyin Peng, Yuqin Luo, Yuyang Zhao, Luqi Huang
BACKGROUND: The accurate identification of botanical origin in commercial products is important to ensure food authenticity and safety for consumers. The Dendrobium species have long been commercialised as functional food supplements and herbal medicines in Asia. Three valuable Dendrobium species, namely Dendrobium officinale, D. huoshanense and D. moniliforme, are often mutually adulterated in trade products in pursuit of higher profit. RESULTS: In this paper, a rapid and reliable semi-quantitative method for identifying the botanical origin of Dendrobium products in terminal markets was developed using high-resolution melting (HRM) analysis with specific primer pairs to target the trnL-F region...
June 20, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28587963/a-polysaccharide-of-dendrobium-officinale-ameliorates-h2o2-induced-apoptosis-in-h9c2-cardiomyocytes-via-pi3k-akt-and-mapk-pathways
#18
Jing-Yi Zhang, Ying Guo, Jin-Ping Si, Xiao-Bo Sun, Gui-Bo Sun, Jing-Jing Liu
Dendrobium officinale is one valuable traditional Chinese medicine, which has skyscraping medicinal value. Polysaccharide is the main active ingredient in D. officinale; its antioxidant activity is a hot research topic nowadays. Oxidative stress plays an important role in the pathological progress of a variety of cardiovascular disease, as one of key factors of cardiomyocyte apoptosis. This research adopts a model of H2O2 induction-H9c2 cardiomyocytes apoptosis, aiming to study the effect of Dendrobium officinale Polysaccharide (DOP-GY) for cardiomyocyte apoptosis caused by oxidative stress and its possible mechanism...
June 3, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28579460/structural-characterization-of-an-immunostimulating-polysaccharide-from-the-stems-of-a-new-medicinal-dendrobium-species-dendrobium-taiseed-tosnobile
#19
Li-Chan Yang, Chang-Chi Hsieh, Chi-Luan Wen, Chun-Hui Chiu, Wen-Chuan Lin
Dendrobium Taiseed Tosnobile, a new Dendrobium species developed by crossbreeding Dendrobium tosaense and Dendrobium nobile, exhibits the characteristics of high mass production and high polysaccharide content. This study investigated the structural characterization and immunostimulating effects of a polysaccharide isolated from D. Taiseed Tosnobile (DTTPS). DTTPS was fractioned using a DEAE-650M column to obtain the major neutral polysaccharide (DTTPS-N). The structural characteristics of DTTPS-N were investigated through high-performance anion exchange chromatography, high-performance size exclusion chromatography, gas chromatography-mass spectrometry, and nuclear magnetic resonance spectroscopy...
October 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28541415/transcriptome-wide-identification-and-expression-analysis-of-divaricata-and-radialis-like-genes-of-the-mediterranean-orchid-orchis-italica
#20
Maria Carmen Valoroso, Sofia De Paolo, Giovanni Iazzetti, Serena Aceto
Bilateral symmetry of flowers is a relevant novelty that has occurred many times throughout the evolution of flowering plants. In Antirrhinum majus, establishment of flower dorso-ventral asymmetry is mainly due to interaction of TCP (CYC and DICH) and MYB (DIV, RAD, and DRIF) transcription factors. In the present study, we characterized 8 DIV-, 4 RAD-, and 2 DRIF-like genes from the transcriptome of Orchis italica, an orchid species with bilaterally symmetric and resupinate flowers. We found a similar number of DIV- and RAD-like genes within the genomes of Phalaenopsis equestris and Dendrobium catenatum orchids...
June 1, 2017: Genome Biology and Evolution
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