Ministry of Education, Culture, Sports, Science and Technology:Grants-in-Aid for Scientific Research(若手研究(B))
Date (from‐to) : 2009 -2010
Author : Mikihisa UMEHARA
Strigolactones (SLs) function as a plant hormone that inhibits shoot branching as well as communication signals for symbiosis and parasitism in the rhizosphere. However, why SL contributes to both the communication signal and phytohormone action has been unknown. In this study, tiller bud outgrowth in wild-type rice seedlings is inhibited, while root 2'-epi-5-deoxystrigol (epi-5DS) levels are elevated, in response to decreasing Pi concentrations in the media, but not in the SL-deficient and -insensitive mutants. These results suggest that SL plays an important role in the adaptation to Pi deficiency