New genes in the strigolactone-related shoot branching pathway

Shoot branching is controlled by the formation and subsequent outgrowth of axillary buds in the axils of leaves

Christine Anne Beveridge; Junko Kyozuka

2009

Scholarcy highlights

  • Shoot branching is controlled by the formation and subsequent outgrowth of axillary buds in the axils of leaves
  • A major breakthrough in this area of plant development has been the discovery that a specific group of terpenoid lactones, named strigolactones, can directly or indirectly, inhibit axillary bud outgrowth
  • New branching mutants have been identified with reduced strigolactone levels or which are defective in strigolactone regulation or response
  • DWARF27 and DWARF14 probably act on strigolactone biosynthesis and strigolactone metabolism or signal transduction, respectively
  • The discovery and characterization of these mutants is an important first step toward understanding the mechanisms of strigolactone biosynthesis and signaling and their importance in regulating shoot branching

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