A molecular phylogeny of Chinese orchids

Abstract

We estimated the molecular phylogenetic relationships of the Chinese members of the family Orchidaceae. Within the Tree of Life for the Genera of Chinese Vascular Plants using atpB, rbcL, matK, ndhF, and matR, the currently delimited subfamilies, tribes, and subtribes are highly supported as monophyletic except for the perplexing Epidendroideae. Five genes (rbcL, matK, psaB, ycf1, and Xdh), which are more universally used in Orchidaceae, were further analyzed to reconstruct the phylogeny of Epidendroideae. The reconstructed trees were in strong agreement and showed significant support for the tribal and subtribal clades. Based on the highly supported circumscription and arrangement of the suprageneric levels in the Tree of Life and reconstructed trees, we have proposed a new phylogenetic classification of Chinese Orchidaceae that includes five subfamilies, 17 tribes, and 21 subtribes.

Odontochilus putaoensis (Cranichideae, Orchidaceae), a new species from Myanmar

“…Morphologically, Odontochilus is distinguished from Anoectochilus by its saccate and non-extruded spur enclosed by the lateral sepals and two parallel stigma lobes positioned under the rostellum, whereas Anoectochilus has a conical spur extruded beyond the lateral sepals and two remote stigma lobes (Lin and Hsu 1976, Pridgeon et al 2003, Chen et al 2009, Pedersen et al 2011). Recent results of molecular systematics indicated that Odontochilus is closely related to Chamaegastrodia and Rhomboda , whereas Anoectochilus is closely related to Ludisia (Li et al 2016). …”

The complete chloroplast genome of Panisea uniflora (Lindl.) Lindl. (Orchidaceae)

“…and Neottieae Lindl.) in subfamily Epidendroideae were selected as ingroup, while two species from subfamily Orchidoideae as outgroup according to the updated molecular phylogeny of Orchidaceae (Chase et al 2015;Li et al 2016). All the sequences were downloaded from NCBI GenBank and aligned using MAFFT v7.307 (Katoh and Standley 2013).…”

The complete chloroplast genome of Coelogyne barbata (Orchidaceae), a rare and ornamental orchid

“…Phylogenetic analysis based on 79 protein-coding genes of 10 representative plastomes within the subfamily Epidendroideae as ingroup. According to the updated molecular phylogeny of Orchidaceae (Chase et al 2015;Li et al 2016), 10 species from two tribes (Malaxideae Lindl. and Arethuseae Lindl.)…”