CsULT1 Gene Regulates of Apocarotenoid Biosynthesis in Crocus sativus
February 4, 2015| |
Crocus sativus' long red stigmas are where commercial saffron, the world's most expensive spice, comes from. It is the site of synthesis and accumulation of apocarotenoids, which are responsible for saffron's color, flavor and aroma. The pathway of apocarotenoids is relatively known, but their mechanism of regulation is still unknown.
Researchers led by Nasheeman Ashraf from the Indian Institute of Integrative Medicine studied the ultrapetala transcription factor (CsULT1) from Crocus. The CsULT1 was more abundant in stigma and increased in expression from before flowering stage until flowering and decreased only after flowering. This pattern was correlated with the accumulation pattern of crocin, an apocarotenoid, indicating its possible role in regulation of apocarotenoid synthesis.
Overexpression of CsULT1 in Crocus calli also resulted in enhanced expressions of key apocarotenoid pathway genes. These results suggest that CsULT1 is a novel regulator of apocarotenoid biosynthesis.
Read more on the study here: http://www.biomedcentral.com/content/pdf/s12870-015-0423-7.pdf.
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