Genome-wide researches and applications on Dendrobium

Abstract

This review summarizes current knowledge of chromosome characterization, genetic mapping, genomic sequencing, quality formation, floral transition, propagation, and identification in Dendrobium. The widely distributed Dendrobium has been studied for a long history, due to its important economic values in both medicine and ornamental. In recent years, some species of Dendrobium and other orchids had been reported on genomic sequences, using the next-generation sequencing technology. And the chloroplast genomes of many Dendrobium species were also revealed. The chromosomes of most Dendrobium species belong to mini-chromosomes, and showed 2n = 38. Only a few of genetic studies were reported in Dendrobium. After revealing of genomic sequences, the techniques of transcriptomics, proteomics and metabolomics could be employed on Dendrobium easily. Some other molecular biological techniques, such as gene cloning, gene editing, genetic transformation and molecular marker developing, had also been applied on the basic research of Dendrobium, successively. As medicinal plants, insights into the biosynthesis of some medicinal components were the most important. As ornamental plants, regulation of flower related characteristics was the most important. More, knowledge of growth and development, environmental interaction, evolutionary analysis, breeding of new cultivars, propagation, and identification of species and herbs were also required for commercial usage. All of these studies were improved using genomic sequences and related technologies. To answer some key scientific issues in Dendrobium, quality formation, flowering, self-incompatibility and seed germination would be the focus of future research. And genome related technologies and studies would be helpful.

Chromosome-scale assembly of the Dendrobium chrysotoxum genome enhances the understanding of orchid evolution

“…D. chrysotoxum has a karyotype of 2N = 2X = 38, with uniform chromosomes 31 . To completely sequence the D. chrysotoxum genome, 138.15 Gb of clean reads were generated by BGISEQ sequencing system (Supplementary Table 1 ).…”

A Two-Phase Model of Air Shock Wave Induced by Rock-Fall in Closed Goaf

“…Computational fluid dynamics (CFD) [43] was an important component of fluid mechanics that applied numerical modeling to analyze the flow problems. User defined function(UDF) [44] approved the user to write C programs that could be linked with CFD solver to promote the performance of the code.…”

Traditional Uses and Pharmacologically Active Constituents of Dendrobium Plants for Dermatological Disorders: A Review

“…The genus is one of the largest members of the orchidaceous family and includes 900–2000 species [ 3 ]. Dendrobium plants are mainly distributed in the tropics and subtropics in southern Asia, Oceanica, and elsewhere [ 4 ]. According to Plants of the World Online , there are 1,556 accepted Dendrobium species at present [ 5 ].…”

“…According to Plants of the World Online , there are 1,556 accepted Dendrobium species at present [ 5 ]. Among them, more than 80 Dendrobium species have been reported in China [ 4 ]. However, there are only six Dendrobium species, namely, D. bigibbum var.…”