Gene_locus Report for: 9aspa-a0a2i0w093

(Below N is a link to NCBI taxonomic web page and E link to ESTHER at designed phylum.)
> cellular organisms: N E > Eukaryota: N E > Viridiplantae: N E > Streptophyta: N E > Streptophytina: N E > Embryophyta: N E > Tracheophyta: N E > Euphyllophyta: N E > Spermatophyta: N E > Magnoliophyta: N E > Mesangiospermae: N E > Liliopsida: N E > Petrosaviidae: N E > Asparagales: N E > Orchidaceae: N E > Epidendroideae: N E > Malaxideae: N E > Dendrobiinae: N E > Dendrobium: N E > Dendrobium catenatum: N E

Title: The Apostasia genome and the evolution of orchids
Zhang GQ, Liu KW, Li Z, Lohaus R, Hsiao YY, Niu SC, Wang JY, Lin YC, Xu Q and Liu ZJ <25 more author(s)> Zhang GQ, Liu KW, Li Z, Lohaus R, Hsiao YY, Niu SC, Wang JY, Lin YC, Xu Q, Chen LJ, Yoshida K, Fujiwara S, Wang ZW, Zhang YQ, Mitsuda N, Wang M, Liu GH, Pecoraro L, Huang HX, Xiao XJ, Lin M, Wu XY, Wu WL, Chen YY, Chang SB, Sakamoto S, Ohme-Takagi M, Yagi M, Zeng SJ, Shen CY, Yeh CM, Luo YB, Tsai WC, Van de Peer Y, Liu ZJ (- 25)
Ref: Nature, 549:379, 2017 : PubMed
Abstract


ESTHER: Zhang_2017_Nature_549_379
PubMedSearch: Zhang 2017 Nature 549 379
PubMedID: 28902843
Gene_locus related to this paper: 9aspa-a0a2i0b2l6, 9aspa-a0a2i0w093, 9aspa-a0a2i0asr1, 9aspa-a0a2i0vyy1, 9aspa-a0a2i0a218, 9aspa-a0a2i0x5j6, 9aspa-a0a2i0aji0, 9aspa-a0a2i0a3k8, 9aspa-a0a2i0win6, 9aspa-a0a2i0vg82, 9aspa-a0a2h9zyy3

Abstract

Constituting approximately 10% of flowering plant species, orchids (Orchidaceae) display unique flower morphologies, possess an extraordinary diversity in lifestyle, and have successfully colonized almost every habitat on Earth. Here we report the draft genome sequence of Apostasia shenzhenica, a representative of one of two genera that form a sister lineage to the rest of the Orchidaceae, providing a reference for inferring the genome content and structure of the most recent common ancestor of all extant orchids and improving our understanding of their origins and evolution. In addition, we present transcriptome data for representatives of Vanilloideae, Cypripedioideae and Orchidoideae, and novel third-generation genome data for two species of Epidendroideae, covering all five orchid subfamilies. A. shenzhenica shows clear evidence of a whole-genome duplication, which is shared by all orchids and occurred shortly before their divergence. Comparisons between A. shenzhenica and other orchids and angiosperms also permitted the reconstruction of an ancestral orchid gene toolkit. We identify new gene families, gene family expansions and contractions, and changes within MADS-box gene classes, which control a diverse suite of developmental processes, during orchid evolution. This study sheds new light 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.



        

Title: The Dendrobium catenatum Lindl. genome sequence provides insights into polysaccharide synthase, floral development and adaptive evolution
Zhang GQ, Xu Q, Bian C, Tsai WC, Yeh CM, Liu KW, Yoshida K, Zhang LS, Chang SB and Liu ZJ <26 more author(s)> Zhang GQ, Xu Q, Bian C, Tsai WC, Yeh CM, Liu KW, Yoshida K, Zhang LS, Chang SB, Chen F, Shi Y, Su YY, Zhang YQ, Chen LJ, Yin Y, Lin M, Huang H, Deng H, Wang ZW, Zhu SL, Zhao X, Deng C, Niu SC, Huang J, Wang M, Liu GH, Yang HJ, Xiao XJ, Hsiao YY, Wu WL, Chen YY, Mitsuda N, Ohme-Takagi M, Luo YB, Van de Peer Y, Liu ZJ (- 26)
Ref: Sci Rep, 6:19029, 2016 : PubMed
Abstract


ESTHER: Zhang_2016_Sci.Rep_6_19029
PubMedSearch: Zhang 2016 Sci.Rep 6 19029
PubMedID: 26754549
Gene_locus related to this paper: 9aspa-a0a2i0w093, 9aspa-a0a2i0vyy1, 9aspa-a0a2i0x5j6, 9aspa-a0a2i0win6, 9aspa-a0a2i0vg82

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.