title: Semi-Rolled Leaf2 modulates rice leaf rolling by regulating abaxial side cell differentiation.
abstract: Moderate leaf rolling maintains the erectness of leaves and minimizes the shadowing between leaves which is helpful to establish ideal plant architecture. Here, we describe asrl2(semi-rolled leaf2) rice mutant, which has incurved leaves due to the presence of defective sclerenchymatous cells on the abaxial side of the leaf and displays narrow leaves and reduced plant height. Map-based cloning revealed that SRL2 encodes a novel plant-specific protein of unknown biochemical function.SRL2 was mainly expressed in the vascular bundles of leaf blades, leaf sheaths, and roots, especially in their sclerenchymatous cells. The transcriptional activities of several leaf development-related YABBY genes were significantly altered in the srl2 mutant. Double mutant analysis suggested that SRL2 and SHALLOT-LIKE1(SLL1)/ROLLED LEAF9(RL9) function in distinct pathways that regulate abaxial-side leaf development. Hence, SRL2 plays an important role in regulating leaf development, particularly during sclerenchymatous cell differentiation.
authors.affiliation: State Key Laboratory of Plant Genomics and Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.
authors.forename: Xiaofei
authors.initials: X
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Plant Genomics and Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China zkcheng@genetics.ac.cn liming@genetics.ac.cn.
authors.forename: Ming
authors.initials: M
authors.lastname: Li
authors.affiliation: Institute of Agricultural Sciences in Jiangsu Coastal Areas, Yancheng 224002, China.
authors.forename: Kai
authors.initials: K
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Plant Genomics and Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.
authors.forename: Ding
authors.initials: D
authors.lastname: Tang
authors.affiliation: Institute of Agricultural Sciences in Jiangsu Coastal Areas, Yancheng 224002, China.
authors.forename: Mingfa
authors.initials: M
authors.lastname: Sun
authors.affiliation: State Key Laboratory of Plant Genomics and Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.
authors.forename: Yafei
authors.initials: Y
authors.lastname: Li
authors.affiliation: State Key Laboratory of Plant Genomics and Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Shen
authors.affiliation: State Key Laboratory of Plant Genomics and Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.
authors.forename: Guijie
authors.initials: G
authors.lastname: Du
authors.forename: Zhukuan
authors.initials: Z
authors.lastname: Cheng
mesh_terms: D002454:Cell Differentiation; D003001:Cloning, Molecular; D015536:Down-Regulation / Q000235:genetics; D018506:Gene Expression Regulation, Plant; D009154:Mutation; D012275:Oryza / Q000033:anatomy & histology / Q000166:cytology* / Q000235:genetics / Q000378:metabolism*; D010641:Phenotype; D018515:Plant Leaves / Q000166:cytology* / Q000378:metabolism*; D010940:Plant Proteins / Q000737:chemistry / Q000378:metabolism*; D013045:Species Specificity; D013347:Subcellular Fractions / Q000378:metabolism
chemical_list: D010940:Plant Proteins
keywords: Abaxial side; SRL2.; cell differentiation; leaf development; leaf rolling; rice