Format

Send to

Choose Destination
Sci Rep. 2016 Jan 12;6:19029. doi: 10.1038/srep19029.

The Dendrobium catenatum Lindl. genome sequence provides insights into polysaccharide synthase, floral development and adaptive evolution.

Author information

1
Shenzhen Key Laboratory for Orchid Conservation and Utilization, The National Orchid Conservation Center of China and The Orchid Conservation and Research Center of Shenzhen, Shenzhen 518114, China.
2
State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China.
3
Shenzhen Key Lab of Marine Genomics, State Key Laboratory of Agricultural Genomics, Shenzhen 518083, China.
4
Dapartment of Life Sciences, National Cheng Kung University, Tainan 701, Taiwan.
5
Orchid Research Center, National Cheng Kung University, Tainan 701, Taiwan.
6
Institute of Tropical Plant Sciences, National Cheng Kung University, Tainan 701, Taiwan.
7
Graduate School of Science and Engineering, Saitama University, Saitama 338-8570, Japan.
8
The Center for Biotechnology and BioMedicine, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China.
9
Technology Center, Taisei Corporation, Kanagawa 245-0051, Japan.
10
Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
11
Fruit Crop Systems Biology Laboratory, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
12
College of Forestry, South China Agricultural University, Guangzhou, 510640, China.
13
Chinese Academy of Forestry, Beijing, 100093, China.
14
PubBio-Tech Services Corporation, Wuhan 430070, China.
15
Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology, Ibaraki 305-8562, Japan.
16
Department of Plant Systems Biology, VIB, and Department of Plant Biotechnology and Bioinformatics. Ghent University, Ghent, Belgium.
17
Bioinformatics Institute Ghent, Ghent University, Ghent B-9000, Belgium.
18
Department of Genetics, Genomics Research Institute, Pretoria, South Africa.

Abstract

Orchids make up about 10% of all seed plant species, have great economical value, and are of specific scientific interest because of their renowned flowers and ecological adaptations. Here, we report the first draft genome sequence of a lithophytic orchid, Dendrobium catenatum. We predict 28,910 protein-coding genes, and find evidence of a whole genome duplication shared with Phalaenopsis. We observed the expansion of many resistance-related genes, suggesting a powerful immune system responsible for adaptation to a wide range of ecological niches. We also discovered extensive duplication of genes involved in glucomannan synthase activities, likely related to the synthesis of medicinal polysaccharides. Expansion of MADS-box gene clades ANR1, StMADS11, and MIKC(*), involved in the regulation of development and growth, suggests that these expansions are associated with the astonishing diversity of plant architecture in the genus Dendrobium. On the contrary, members of the type I MADS box gene family are missing, which might explain the loss of the endospermous seed. The findings reported here will be important for future studies into polysaccharide synthesis, adaptations to diverse environments and flower architecture of Orchidaceae.

PMID:
26754549
PMCID:
PMC4709516
DOI:
10.1038/srep19029
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Nature Publishing Group Icon for PubMed Central
Loading ...
Support Center