title: Chrysanthemum transcription factor CmLBD1 direct lateral root formation in Arabidopsis thaliana.
abstract: The plant-specific LATERAL ORGAN BOUNDARIES DOMAIN (LBD) genes are important regulators of growth and development. Here, a chrysanthemum class I LBD transcription factor gene, designated CmLBD1, was isolated and its function verified. CmLBD1 was transcribed in both the root and stem, but not in the leaf. The gene responded to auxin and was shown to participate in the process of adventitious root primordium formation. Its heterologous expression in Arabidopsis thaliana increased the number of lateral roots formed. When provided with exogenous auxin, lateral root emergence was promoted. CmLBD1 expression also favored callus formation from A. thaliana root explants in the absence of exogenously supplied phytohormones. In planta, CmLBD1 probably acts as a positive regulator of the response to auxin fluctuations and connects auxin signaling with lateral root formation.
authors.affiliation: College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Lu
authors.initials: L
authors.lastname: Zhu
authors.affiliation: College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Chen
authors.initials: C
authors.lastname: Zheng
authors.affiliation: College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Ruixia
authors.initials: R
authors.lastname: Liu
authors.affiliation: College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Aiping
authors.initials: A
authors.lastname: Song
authors.affiliation: College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Zhaohe
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Jingjing
authors.initials: J
authors.lastname: Xin
authors.affiliation: College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Jiafu
authors.initials: J
authors.lastname: Jiang
authors.affiliation: College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Sumei
authors.initials: S
authors.lastname: Chen
authors.affiliation: College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Fei
authors.initials: F
authors.lastname: Zhang
authors.affiliation: College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Weimin
authors.initials: W
authors.lastname: Fang
authors.affiliation: College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Fadi
authors.initials: F
authors.lastname: Chen
mesh_terms: D000595:Amino Acid Sequence; D029681:Arabidopsis Proteins / Q000502:physiology*; D031202:Chrysanthemum / Q000235:genetics*; D003001:Cloning, Molecular; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D010641:Phenotype; D018517:Plant Roots / Q000235:genetics* / Q000254:growth & development*; D030821:Plants, Genetically Modified; D021381:Protein Transport; D017422:Sequence Analysis, DNA; D014157:Transcription Factors / Q000235:genetics*; D015533:Transcriptional Activation
chemical_list: D029681:Arabidopsis Proteins; D014157:Transcription Factors
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