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Characterization of benzylalcohol acetyltransferase in scented and non-scented Clarkia species

Authors
남경희Natalia DudarevaNatalia DudarevaEran PicherskyEran Pichersky
Issue Date
Sep-1999
Publisher
Japanese Society of Plant Physiologists
Citation
Plant and Cell Physiology, v.40, no.9, pp.916 - 923
Journal Title
Plant and Cell Physiology
Volume
40
Number
9
Start Page
916
End Page
923
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/150027
DOI
10.1093/oxfordjournals.pcp.a029623
ISSN
0032-0781
Abstract
The floral scent of Clarkia breweri, an annual native to California, contains copious amounts of benzylacetate, which is synthesized by a reaction of benzylalcohol and acetyl-CoA that is catalyzed by acetyl-CoA:benzylalcohol acetyltransferase (BEAT). Here we demonstrate that different lines of C. breweri contain different levels of BEAT activity even though they have similar levels of BEAT mRNA. We also present evidence that the genome of C. breweri's non-scented progenitor, C. concinna, contains BEAT genes, but that its flowers have little BEAT enzymatic activity. This is due to the fact that although C. concinna BEAT genes are transcribed in the flowers, the single intron in these transcripts is almost never spliced out, and when the intron is spliced out, the resulting enzyme has higher affinity with substrates other than benzylalcohol. These results indicate that the regulation of BEAT activity in Clarkia involves post-transcriptional mechanisms.
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