title: Gene expression changes triggered by end-of-day far-red light treatment on early developmental stages of Eustoma grandiflorum (Raf.) Shinn.
abstract: To better understand the molecular mechanisms related to growth promotion in the early developmental stages of Eustoma grandiflorum (Raf.) Shinn. under end-of-day far-red light (EOD-FR) treatment, we analyzed the leaf transcriptome of treated (EOD) and untreated plants (Cont) by using RNA-seq technology. EOD-FR treatment for only about 2 weeks in regions with limited sunshine during winter resulted in significantly higher internode length between the 3rd and 4th nodes on the main stem in EOD than in Cont. Among the differentially expressed genes (DEGs) related to synthesis or transport of auxin, higher levels of YUCCA (CL6581) and PIN4 (CL6181) were noted after treatment in EOD than in Cont in the leaf. In addition, high expression levels of GA20ox (Unigene11862) related to gibberellin (GA) synthesis and transcription factor bHLH 135 (CL7761) were observed in the stem of EOD, 3 h after treatment. A vertical section of the stem showed that the pith length of cells at the 4th node was longer in EOD than in Cont. Collectively, these results suggested that EOD-FR treatment increased the expression of DEGs related to GA and auxin biosynthesis, bHLH transcription factor, and internodal cell elongation along the longitudinal axis of Eustoma plants.
authors.affiliation: Faculty of Agriculture, Tottori University, Koyama, Tottori 680-8553, Japan.
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Takemura
authors.affiliation: Faculty of Agriculture, Tottori University, Koyama, Tottori 680-8553, Japan.
authors.forename: Katsuou
authors.initials: K
authors.lastname: Kuroki
authors.affiliation: Tottori Prefectural Agriculture and forest Research Institute, Horticultural Experiment Center, Hokuei, Tottori 689-2221, Japan.
authors.forename: Masahiro
authors.initials: M
authors.lastname: Katou
authors.affiliation: Tottori Prefectural Agriculture and forest Research Institute, Horticultural Experiment Center, Hokuei, Tottori 689-2221, Japan.
authors.forename: Masayuki
authors.initials: M
authors.lastname: Kishimoto
authors.affiliation: Faculty of Agriculture, Tottori University, Koyama, Tottori 680-8553, Japan.
authors.forename: Wataru
authors.initials: W
authors.lastname: Tsuji
authors.affiliation: Faculty of Agriculture, Tottori University, Koyama, Tottori 680-8553, Japan.
authors.forename: Eiji
authors.initials: E
authors.lastname: Nishihara
authors.affiliation: Faculty of Agriculture, Tottori University, Koyama, Tottori 680-8553, Japan.
authors.forename: Fumio
authors.initials: F
authors.lastname: Tamura
mesh_terms: D019295:Computational Biology / Q000379:methods; D020869:Gene Expression Profiling; D018506:Gene Expression Regulation, Plant / Q000528:radiation effects*; D063990:Gene Ontology; D059014:High-Throughput Nucleotide Sequencing; D008027:Light; D018515:Plant Leaves / Q000235:genetics; D018547:Plant Stems / Q000235:genetics; D015203:Reproducibility of Results; D064028:Tracheophyta / Q000235:genetics* / Q000254:growth & development*; D059467:Transcriptome