title: Genetic control of inflorescence architecture during rice domestication.
abstract: Inflorescence architecture is a key agronomical factor determining grain yield, and thus has been a major target of cereal crop domestication. Transition from a spread panicle typical of ancestral wild rice (Oryza rufipogon Griff.) to the compact panicle of present cultivars (O. sativa L.) was a crucial event in rice domestication. Here we show that the spread panicle architecture of wild rice is controlled by a dominant gene, OsLG1, a previously reported SBP-domain transcription factor that controls rice ligule development. Association analysis indicates that a single-nucleotide polymorphism-6 in the OsLG1 regulatory region led to a compact panicle architecture in cultivars during rice domestication. We speculate that the cis-regulatory mutation can fine-tune the spatial expression of the target gene, and that selection of cis-regulatory mutations might be an efficient strategy for crop domestication.
authors.affiliation: State Key Laboratory of Plant Physiology and Biochemistry, National Center for Evaluation of Agricultural Wild Plants (Rice), China Agricultural University, Beijing 100193, China.
authors.forename: Zuofeng
authors.initials: Z
authors.lastname: Zhu
authors.forename: Lubin
authors.initials: L
authors.lastname: Tan
authors.forename: Yongcai
authors.initials: Y
authors.lastname: Fu
authors.forename: Fengxia
authors.initials: F
authors.lastname: Liu
authors.forename: Hongwei
authors.initials: H
authors.lastname: Cai
authors.forename: Daoxin
authors.initials: D
authors.lastname: Xie
authors.forename: Feng
authors.initials: F
authors.lastname: Wu
authors.forename: Jianzhong
authors.initials: J
authors.lastname: Wu
authors.forename: Takashi
authors.initials: T
authors.lastname: Matsumoto
authors.forename: Chuanqing
authors.initials: C
authors.lastname: Sun
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D001947:Breeding; D002874:Chromosome Mapping; D018556:Crops, Agricultural / Q000235:genetics*; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D005838:Genotype; D006801:Humans; D056626:Inflorescence / Q000235:genetics*; D008969:Molecular Sequence Data; D009154:Mutation; D012275:Oryza / Q000145:classification / Q000235:genetics*; D010641:Phenotype; D010802:Phylogeny; D020641:Polymorphism, Single Nucleotide