SG1

2015-01-20 | Categories genes  | Tags BR  brassinosteroid  seed  dwarf  panicle  lamina  root  erect  cellular proliferation  grain 

• Information
  • Symbol: SG1
  • MSU: LOC_Os09g28520
  • RAPdb: Os09g0459200
• Publication
  • Short grain1 decreases organ elongation and brassinosteroid response in rice, 2012, Plant Physiol.
• Genbank accession number
  • AK110733
• Key message
  • However, the endogenous BR level in the SG1 overexpressor (SG1:OX) plants was comparable to the wild type
  • Overexpression of SG1 in rice produced a phenotype with short grains and dwarfing reminiscent of brassinosteroid (BR)-deficient mutants, with wide, dark-green, and erect leaves
  • Taken together, these results suggest that SG1 decreases responses to BRs and elongation of organs such as seeds and the internodes of rachis branches through decreased cellular proliferation
  • The causative gene, SG1, encodes a protein with unknown function that is preferentially expressed in roots and developing panicles
  • SG1:OX plants were insensitive to brassinolide in the lamina inclination assay
  • We identified a short-grain mutant (Short grain1 (Sg1) Dominant) via phenotypic screening of 13,000 rice (Oryza sativa) activation-tagged lines
  • In contrast to the SG1:OX plants, RNA interference knockdown plants that down-regulated SG1 and a related gene, SG1-LIKE PROTEIN1, had longer grains and internodes in rachis branches than in the wild type
• Connection

Prev     Next