The Apostasia genome and the evolution of orchids
New light is shed on the genetic mechanisms underpinning key orchid innovations, including the development of the labellum and gynostemium, pollinia, and seeds without endosperm, as well as the evolution of epiphytism; reveals relationships between the Orchidaceae subfamilies; and helps clarify the evolutionary history of orchids within the angiosperms.
The genome sequence of the orchid Phalaenopsis equestris
The genome sequence of the tropical epiphytic orchid Phalaenopsis equestris, a frequently used parent species for orchid breeding, is presented and evidence for an orchid-specific paleopolyploidy event that preceded the radiation of most orchid clades is found.
The Dendrobium catenatum Lindl. genome sequence provides insights into polysaccharide synthase, floral development and adaptive evolution
The first draft genome sequence of a lithophytic orchid, Dendrobium catenatum, is reported, predicting 28,910 protein-coding genes, and finding evidence of a whole genome duplication shared with Phalaenopsis.
C- and D-class MADS-box genes from Phalaenopsis equestris (Orchidaceae) display functions in gynostemium and ovule development.
Results indicated that both C-class PeMADS1 and D-classPeMADS7 play important roles in orchid gynostemium and ovule development.
Pollination: Self-fertilization strategy in an orchid
- Ke-Wei Liu, Zhongjian Liu, Laiqiang Huang, Liqiang Li, Li-Jun Chen, Guang-da Tang
- Biology, MedicineNature
- 22 June 2006
A new type of self-pollination mechanism in the tree-living orchid Holcoglossum amesianum is described, in which the bisexual flower turns its anther against gravity through 360° in order to insert pollen into its own stigma cavity — without the aid of any pollinating agent or medium.
OrchidBase 2.0: comprehensive collection of Orchidaceae floral transcriptomes.
The OrchidBase is updated to version 2.0 which has 1,562,071 newly added floral non-redundant transcribed sequences (unigenes) collected comprehensively from 10 orchid species across five subfamilies of Orchidaceae.
A genome for gnetophytes and early evolution of seed plants
A high-quality draft genome sequence for Gnetum montanum is reported, the first for any gnetophyte, enabling a better resolution of ancestral genomic features within seed plants, and the identification of genomic characters that distinguish gnetum from other gymnosperms.
Evolution and Biogeography of the Slipper Orchids: Eocene Vicariance of the Conduplicate Genera in the Old and New World Tropics
The evolutionary and biogeographical history of the slipper orchids is investigated, which represents a monophyletic subfamily of the orchid family and comprises five genera that are disjunctly distributed in tropical to temperate regions.
The Litsea genome and the evolution of the laurel family
A chromosome-level assembly of the Litsea cubeba genome is presented, and divergence of inflorescence and sexual differentiation, the phylogenetic relationships across the Lauraceae and related species, and biosynthetic genes related to essential oil synthesis are revealed.
Tree of life for the genera of Chinese vascular plants
A phylogenetic tree of Chinese vascular plants (Tracheophyta) is reconstructed using sequences of the chloroplast genes atpB, matK, ndhF, and rbcL and mitochondrial matR and the results showed that two species of Eberhardtia are sister to a clade formed by all other taxa of Sapotaceae, except Sarcosperma.