Mitsuda N

References (3)

Title : The Apostasia genome and the evolution of orchids - Zhang_2017_Nature_549_379
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
Ref : Nature , 549 :379 , 2017
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.
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

Title : Involvement of STH7 in light-adapted development in Arabidopsis thaliana promoted by both strigolactone and karrikin - Thussagunpanit_2017_Biosci.Biotechnol.Biochem_81_292
Author(s) : Thussagunpanit J , Nagai Y , Nagae M , Mashiguchi K , Mitsuda N , Ohme-Takagi M , Nakano T , Nakamura H , Asami T
Ref : Biosci Biotechnol Biochem , 81 :292 , 2017
Abstract : Strigolactones (SLs) and karrikins (KARs) regulate photomorphogenesis. GR24, a synthetic SL and KAR1, a KAR, inhibit the hypocotyl elongation of Arabidopsis thaliana in a weak light. GR24 and KAR1 up-regulate the expression of STH7, encoding a transcription factor belonging to the double B-box zinc finger subfamily. In this study, we used STH7-overexpressing (STH7ox) lines and functionally defective STH7 (STH7-SRDX) mutants to investigate roles of SLs and KARs in photomorphogenesis of Arabidopsis. Hypocotyl elongation of STH7-SRDX mutants was less sensitive to both GR24 and KAR1 treatment than that of wild-type Arabidopsis under weak light conditions. Furthermore, the chlorophyll and anthocyanin content was increased in STH7ox lines when de-etiolated with light and GR24-treated plants had enhanced anthocyanin production. GR24 and KAR1 treatment significantly increased the expression level of photosynthesis-related genes LHCB1 and rbcS. The results strongly suggest that SL and KAR induce photomorphogenesis of Arabidopsis in an STH7-dependent manner.
ESTHER : Thussagunpanit_2017_Biosci.Biotechnol.Biochem_81_292
PubMedSearch : Thussagunpanit_2017_Biosci.Biotechnol.Biochem_81_292
PubMedID: 27858514

Title : The Dendrobium catenatum Lindl. genome sequence provides insights into polysaccharide synthase, floral development and adaptive evolution - Zhang_2016_Sci.Rep_6_19029
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
Ref : Sci Rep , 6 :19029 , 2016
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.
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