Gene Details:

Functional Descriptions:

  • In addition to its role in forming lateral meristems, the wild-type LAX1 gene acts as a floral meristem identity gene which specifies the terminal spikelet meristem.
  • LAX1 mRNA accumulates in two to three layers of cells in the boundary region between the initiating AM and the shoot apical meristem.
  • In LAX1 mutants, the proliferation of meristematic cells is initiated but fails to progress into the formation of AM.
  • In situ hybridization analysis using OSH1, a rice knotted1 (kn1) ortholog, confirmed the absence of lateral meristems in LAX1-2 panicles.
  • These defects indicate that the LAX1 gene is required for the initiation/maintenance of axillary meristems in the rice panicle.
  • A comparison of the defects in LAX1-1 and LAX1-2 plants suggested that the sensitivities to reduced LAX1 activity were not uniform among different types of meristems.
  • The LAX1 and FRIZZY PANICLE 2 genes determine the inflorescence architecture of rice by controlling rachis-branch and spikelet development.
  • In LAX1-2, which is a new and stronger allele of the previously reported lax mutant, initiation and/or maintenance of rachis-branches, lateral spikelets, and terminal spikelets was severely prevented.
  • In rice (Oryza sativa), LAX PANICLE1 (LAX1) function is required for the generation of AM throughout the plant’s lifespan.
  • The lax2 mutant is similar to lax panicle1 (LAX1) in that it lacks an AM in most of the lateral branching of the panicle and has a reduced number of AMs at the vegetative stage.
  • The LAX1 lax2 double mutant synergistically enhances the reduced-branching phenotype, indicating the presence of multiple pathways for branching.

Literature:

Gene Resources:

Sequences:

cDNA Sequence
  • >LOC_Os01g61480.1
    CAGGGGCTGAAACAAACCCAGCACATTTGTGTTTGTACGCGCAGCTAGCTAGCCACGAGCGCGGATCCATCTCCTAGCTAGCGCACCATCTATGGATCCATACCACGACTAAAACATGCATGACCCACGCGGCTTCCCCATCCACCCGCAGCCGTACCACCTCCACCCCACGGCCGGCGGCCTCGGCGAGGGCAGGATGCGGGGCGGCGGGCGGCGGCGCCCCGGCGCCAAGCTCTCCACCGACCCGCAGAGCGTGGCGGCGCGGGAGCGGCGGCACCGGATCAGCGACCGCTTCCGCGTGCTCCGCAGCCTCGTGCCGGGCGGCAGCAAGATGGACACGGTGTCCATGCTGGAGCAGGCCATCCACTACGTCAAGTTCCTCAAGGCGCAGGTCACCCTGCACCAGGCCGCGCTCGTGCAGCACGAGGAGGGCTGCCAGCACGCCGACGTCGCCGCGGCGTTCTCCGCCGCCGACGCCGATCTGGCCCTTGAGCTGAACCATCGCCACGGCGGCGCCGGCGATGATGACGCCGGGATGACGACGCTGGAGATGGCGCCGATGCAAGAGGCGGTGGGCTACGGCGACGGCCCGGCTCATCAGATGATGCAGCAAGCGCTCGATCCAGCGGGGCAGCTGATGATGGGCGGCGCTCATCAGCTGCCTCCTTTGCCTTGCTGTGTCTTCGTCCAGGAGACTGACCCCTCGTGCTACTCGGTGTGCAATGTCCACGGTGAGGAGTCTGGTGCGCAAGGATCTTATTAGCTAGCTAGTGAGACAGTGGCTTGCTTAGGTAGTTAATTTCCTTAAGTATGCTCGAATATTGGCTCTACCCACTAGCTGTCTAGCTCTACTTAGCTTACCTAGGTCGTCAACCAATATATTACCGGTTGGTCATGGTCCCTTAAATTAGCTAGACTCTTGATTTCTGTAAGAATGCATATATGCATGCATGGGGTTCTGTTGGAGCAATGCATAACAGAGCTTTGTTTTACATGCATGCGTGCATGCTTCCTAGATATCATTCTGAAATCTGAACTTGTTTGCTCGATCGCTTAATTGCTATCTCACCATTTCGGT
CDS Sequence
  • >LOC_Os01g61480.1
    ATGCATGACCCACGCGGCTTCCCCATCCACCCGCAGCCGTACCACCTCCACCCCACGGCCGGCGGCCTCGGCGAGGGCAGGATGCGGGGCGGCGGGCGGCGGCGCCCCGGCGCCAAGCTCTCCACCGACCCGCAGAGCGTGGCGGCGCGGGAGCGGCGGCACCGGATCAGCGACCGCTTCCGCGTGCTCCGCAGCCTCGTGCCGGGCGGCAGCAAGATGGACACGGTGTCCATGCTGGAGCAGGCCATCCACTACGTCAAGTTCCTCAAGGCGCAGGTCACCCTGCACCAGGCCGCGCTCGTGCAGCACGAGGAGGGCTGCCAGCACGCCGACGTCGCCGCGGCGTTCTCCGCCGCCGACGCCGATCTGGCCCTTGAGCTGAACCATCGCCACGGCGGCGCCGGCGATGATGACGCCGGGATGACGACGCTGGAGATGGCGCCGATGCAAGAGGCGGTGGGCTACGGCGACGGCCCGGCTCATCAGATGATGCAGCAAGCGCTCGATCCAGCGGGGCAGCTGATGATGGGCGGCGCTCATCAGCTGCCTCCTTTGCCTTGCTGTGTCTTCGTCCAGGAGACTGACCCCTCGTGCTACTCGGTGTGCAATGTCCACGGTGAGGAGTCTGGTGCGCAAGGATCTTATTAG
Protein Sequence
  • >LOC_Os01g61480.1
    MHDPRGFPIHPQPYHLHPTAGGLGEGRMRGGGRRRPGAKLSTDPQSVAARERRHRISDRFRVLRSLVPGGSKMDTVSMLEQAIHYVKFLKAQVTLHQAALVQHEEGCQHADVAAAFSAADADLALELNHRHGGAGDDDAGMTTLEMAPMQEAVGYGDGPAHQMMQQALDPAGQLMMGGAHQLPPLPCCVFVQETDPSCYSVCNVHGEESGAQGSY*