BIOMAT Database Logo BIOMAT Database Logo

LAZY1 controls rice shoot gravitropism through regulating polar auxin transport. 2007

Peijin Li, and Yonghong Wang, and Qian Qian, and Zhiming Fu, and Mei Wang, and Dali Zeng, and Baohua Li, and Xiujie Wang, and Jiayang Li
State Key Laboratory of Plant Genomics and National Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.

Tiller angle of rice (Oryza sativa L.) is an important agronomic trait that contributes to grain production, and has long attracted attentions of breeders for achieving ideal plant architecture to improve grain yield. Although enormous efforts have been made over the past decades to study mutants with extremely spreading or compact tillers, the molecular mechanism underlying the control of tiller angle of cereal crops remains unknown. Here we report the cloning of the LAZY1 (LA1) gene that regulates shoot gravitropism by which the rice tiller angle is controlled. We show that LA1, a novel grass-specific gene, is temporally and spatially expressed, and plays a negative role in polar auxin transport (PAT). Loss-of-function of LA1 enhances PAT greatly and thus alters the endogenous IAA distribution in shoots, leading to the reduced gravitropism, and therefore the tiller-spreading phenotype of rice plants.

UI MeSH Term Description Entries
D007210 Indoleacetic Acids Acetic acid derivatives of the heterocyclic compound indole. (Merck Index, 11th ed) Auxin,Auxins,Indolylacetic Acids,Acids, Indoleacetic,Acids, Indolylacetic
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D010940 Plant Proteins Proteins found in plants (flowers, herbs, shrubs, trees, etc.). The concept does not include proteins found in vegetables for which PLANT PROTEINS, DIETARY is available. Plant Protein,Protein, Plant,Proteins, Plant
D003001 Cloning, Molecular The insertion of recombinant DNA molecules from prokaryotic and/or eukaryotic sources into a replicating vehicle, such as a plasmid or virus vector, and the introduction of the resultant hybrid molecules into recipient cells without altering the viability of those cells. Molecular Cloning
D000595 Amino Acid Sequence The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION. Protein Structure, Primary,Amino Acid Sequences,Sequence, Amino Acid,Sequences, Amino Acid,Primary Protein Structure,Primary Protein Structures,Protein Structures, Primary,Structure, Primary Protein,Structures, Primary Protein
D001693 Biological Transport, Active The movement of materials across cell membranes and epithelial layers against an electrochemical gradient, requiring the expenditure of metabolic energy. Active Transport,Uphill Transport,Active Biological Transport,Biologic Transport, Active,Transport, Active Biological,Active Biologic Transport,Transport, Active,Transport, Active Biologic,Transport, Uphill
D012275 Oryza A genus of grass family (Poaceae) that include several rice species. Oryza sativa,Rice,Rices
D016415 Sequence Alignment The arrangement of two or more amino acid or base sequences from an organism or organisms in such a way as to align areas of the sequences sharing common properties. The degree of relatedness or homology between the sequences is predicted computationally or statistically based on weights assigned to the elements aligned between the sequences. This in turn can serve as a potential indicator of the genetic relatedness between the organisms. Sequence Homology Determination,Determination, Sequence Homology,Alignment, Sequence,Alignments, Sequence,Determinations, Sequence Homology,Sequence Alignments,Sequence Homology Determinations
D017343 Genes, Plant The functional hereditary units of PLANTS. Plant Genes,Gene, Plant,Plant Gene
D018506 Gene Expression Regulation, Plant Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control of gene action in plants. Plant Gene Expression Regulation,Regulation of Gene Expression, Plant,Regulation, Gene Expression, Plant

Related Publications

Peijin Li, and Yonghong Wang, and Qian Qian, and Zhiming Fu, and Mei Wang, and Dali Zeng, and Baohua Li, and Xiujie Wang, and Jiayang Li
Maize LAZY1 mediates shoot gravitropism and inflorescence development through regulating auxin transport, auxin signaling, and light response.
November 2013, Plant physiology,
Peijin Li, and Yonghong Wang, and Qian Qian, and Zhiming Fu, and Mei Wang, and Dali Zeng, and Baohua Li, and Xiujie Wang, and Jiayang Li
LAZY1 Controls Tiller Angle and Shoot Gravitropism by Regulating the Expression of Auxin Transporters and Signaling Factors in Rice.
February 2021, Plant & cell physiology,
Peijin Li, and Yonghong Wang, and Qian Qian, and Zhiming Fu, and Mei Wang, and Dali Zeng, and Baohua Li, and Xiujie Wang, and Jiayang Li
Blocking Rice Shoot Gravitropism by Altering One Amino Acid in LAZY1.
August 2022, International journal of molecular sciences,
Peijin Li, and Yonghong Wang, and Qian Qian, and Zhiming Fu, and Mei Wang, and Dali Zeng, and Baohua Li, and Xiujie Wang, and Jiayang Li
HSFA2D-LAZY6-LAZY1 module regulates shoot gravitropism and tiller angle in rice.
July 2025, The New phytologist,
Peijin Li, and Yonghong Wang, and Qian Qian, and Zhiming Fu, and Mei Wang, and Dali Zeng, and Baohua Li, and Xiujie Wang, and Jiayang Li
The Arabidopsis MAX pathway controls shoot branching by regulating auxin transport.
March 2006, Current biology : CB,
Peijin Li, and Yonghong Wang, and Qian Qian, and Zhiming Fu, and Mei Wang, and Dali Zeng, and Baohua Li, and Xiujie Wang, and Jiayang Li
Polar auxin transport controls suspensor fate.
July 2008, Plant signaling & behavior,
Peijin Li, and Yonghong Wang, and Qian Qian, and Zhiming Fu, and Mei Wang, and Dali Zeng, and Baohua Li, and Xiujie Wang, and Jiayang Li
The auxin response factor OsARF12 modulates rice leaf angle via affecting shoot gravitropism.
July 2025, Journal of genetics and genomics = Yi chuan xue bao,
Peijin Li, and Yonghong Wang, and Qian Qian, and Zhiming Fu, and Mei Wang, and Dali Zeng, and Baohua Li, and Xiujie Wang, and Jiayang Li
Extracellular ATP inhibits root gravitropism at concentrations that inhibit polar auxin transport.
January 2003, Plant physiology,
Peijin Li, and Yonghong Wang, and Qian Qian, and Zhiming Fu, and Mei Wang, and Dali Zeng, and Baohua Li, and Xiujie Wang, and Jiayang Li
Identification of the gravitropism-related rice gene LAZY1 and elucidation of LAZY1-dependent and -independent gravity signaling pathways.
May 2007, Plant & cell physiology,
Peijin Li, and Yonghong Wang, and Qian Qian, and Zhiming Fu, and Mei Wang, and Dali Zeng, and Baohua Li, and Xiujie Wang, and Jiayang Li
Gravitropism: lateral thinking in auxin transport.
July 2002, Current biology : CB,
Copied contents to your clipboard!