title: BRITTLE CULM1, which encodes a COBRA-like protein, affects the mechanical properties of rice plants.
abstract: Plant mechanical strength is an important agronomic trait. To understand the molecular mechanism that controls the plant mechanical strength of crops, we characterized the classic rice mutant brittle culm1 (bc1) and isolated BC1 using a map-based cloning approach. BC1, which encodes a COBRA-like protein, is expressed mainly in developing sclerenchyma cells and in vascular bundles of rice. In these types of cells, mutations in BC1 cause not only a reduction in cell wall thickness and cellulose content but also an increase in lignin level, suggesting that BC1, a gene that controls the mechanical strength of monocots, plays an important role in the biosynthesis of the cell walls of mechanical tissues.
authors.affiliation: Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.
authors.forename: Yunhai
authors.initials: Y
authors.lastname: Li
authors.forename: Qian
authors.initials: Q
authors.lastname: Qian
authors.forename: Yihua
authors.initials: Y
authors.lastname: Zhou
authors.forename: Meixian
authors.initials: M
authors.lastname: Yan
authors.forename: Lei
authors.initials: L
authors.lastname: Sun
authors.forename: Mu
authors.initials: M
authors.lastname: Zhang
authors.forename: Zhiming
authors.initials: Z
authors.lastname: Fu
authors.forename: Yonghong
authors.initials: Y
authors.lastname: Wang
authors.forename: Bin
authors.initials: B
authors.lastname: Han
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Pang
authors.forename: Mingsheng
authors.initials: M
authors.lastname: Chen
authors.forename: Jiayang
authors.initials: J
authors.lastname: Li
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D002473:Cell Wall / Q000378:metabolism; D002482:Cellulose / Q000378:metabolism; D002874:Chromosome Mapping; D003001:Cloning, Molecular; D018076:DNA, Complementary / Q000737:chemistry / Q000235:genetics; D018744:DNA, Plant / Q000737:chemistry / Q000235:genetics; D018507:Gene Expression Regulation, Developmental; D018506:Gene Expression Regulation, Plant; D017403:In Situ Hybridization; D008031:Lignin / Q000378:metabolism; D008855:Microscopy, Electron, Scanning; D008969:Molecular Sequence Data; D009154:Mutation; D012275:Oryza / Q000235:genetics* / Q000254:growth & development / Q000648:ultrastructure; D010802:Phylogeny; D010940:Plant Proteins / Q000235:genetics* / Q000378:metabolism; D017422:Sequence Analysis, DNA; D013314:Stress, Mechanical
chemical_list: D018076:DNA, Complementary; D018744:DNA, Plant; D010940:Plant Proteins; D002482:Cellulose; D008031:Lignin