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Plant Signal Behav. 2013 May;8(5):e24193. doi: 10.4161/psb.24193. Epub 2013 Mar 19.

Effects of strigolactone-biosynthesis inhibitor TIS108 on Arabidopsis.

Author information

1
Department of Applied Biological Chemistry; The University of Tokyo; Tokyo, Japan; Department of Bioscience; Faculty of Applied Bioscience; Tokyo University of Agriculture; Tokyo, Japan.

Abstract

TIS108 is a triazole-type strigolactone (SL)-biosynthesis inhibitor that reduces the level of 2'-epi-5-deoxystrigol (epi-5DS) in rice. Here we report the effects of TIS108 on Arabidopsis. Treatment of TIS108 increased the number of branches and repressed root hair elongation as was observed in SL-deficient mutants, and co-application of GR24, a synthetic SL analog, recovered the TIS108-induced phenotype to that of wild-type. In addition, MAX3 and MAX4 genes in the SL-biosynthesis pathway were upregulated in TIS108-treated Arabidopsis, probably due to feedback regulation caused by SL deficiency. These results indicate that TIS108 is an effective tool for regulating SL production in Arabidopsis.

KEYWORDS:

arabidopsis; biosynthesis inhibitor; plant growth regulator; plant hormone; strigolactone

PMID:
23511201
PMCID:
PMC3907539
DOI:
10.4161/psb.24193
[Indexed for MEDLINE]
Free PMC Article
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