Suppression of Tiller Bud Activity in Tillering Dwarf Mutants of Rice

• DOI: 10.1093/pcp/pci022
• Publication Date: 2005-01-20T01:13:31Z
• Authors: Shinji Ishikawa; Masahiko Maekawa; Tomotsugu Arite; Kazumitsu Onishi; Itsuro Takamure; Junko Kyozuka
• Keywords: Tiller (botany)

In this study, we analyzed five tillering dwarf mutants that exhibit reduction of plant stature and an increase in tiller numbers. We show that, the mutants, axillary meristems are normally established but suppression bud activity is weakened. The phenotypes suggest they play roles control dormancy to suppress activity. However, dependence both node position planting density on their growth, which implies functions genes independent developmental environmental Map-based cloning D3 gene revealed it encodes F-box leucine-trich repeat (LRR) protein orthologous Arabidopsis MAX2/ORE9. This indicates conservation mechanisms controlling between monocots eudicots. suitable for study rice believe future molecular genetic studies using them may enable significant progress understanding shoot branching.