Journal
JOURNAL OF PLANT PHYSIOLOGY
Volume 169, Issue 9, Pages 920-923Publisher
ELSEVIER GMBH, URBAN & FISCHER VERLAG
DOI: 10.1016/j.jplph.2012.03.004
Keywords
Anthocyanin; Caffeic acid; Chalcone synthase; Flavonol; p-Coumaric acid; Tissue-specific RNA silencing
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Funding
- Ministry of Education, Culture, Sports, Science and Technology of Japan [21380022]
- Grants-in-Aid for Scientific Research [21780020, 21380022] Funding Source: KAKEN
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Modern commercial petunias exhibit a wide range of flower colors, which can be observed in gardens. In this study, we present a petunia cultivar that exhibits a floral pattern that is invisible to humans but is possibly visible to pollinating insects. We show that this hidden pattern is established by differentially localized accumulation of flavonols and cinnamic acid derivatives in the corolla limb. This accumulation is caused by a combination of two distinct mechanisms that inhibit anthocyanin biosynthesis: a loss-of-function mutation in the ANTHOCYANIN2, and localized RNA-silencing of CHALCONE SYNTHASE-A. (C) 2012 Elsevier GmbH. All rights reserved.
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