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- Title
The ethylene signaling pathway has a negative impact on sucrose-induced anthocyanin accumulation in Arabidopsis.
- Authors
Kwon, Yerim; Oh, Jee; Noh, Hana; Hong, Suk-Whan; Bhoo, Seong; Lee, Hojoung
- Abstract
In an attempt to understand the complex regulatory mechanisms underlying sucrose-induced flavonoid biosynthesis, we examined several Arabidopsis mutants with altered anthocyanin accumulation. We determined that disruption of ethylene signaling results in a dramatic increase in sucrose-induced anthocyanin accumulation. Furthermore, we investigated why the ein2- 1 ( ethylene insensitive) Arabidopsis mutant accumulates higher levels of anthocyanin in response to sucrose than wild-type Arabidopsis. An increased level of PAP1 transcript in the ein2- 1 mutant appears to be the main factor responsible for the increased accumulation of anthocyanin in response to sucrose. Therefore, our results indicate that the ethylene signaling pathway plays a negative role in sucrose-induced anthocyanin accumulation. We believe that the explanation for this observation may be related to the initiation of the senescence program in plants.
- Subjects
ETHYLENE; PLANT cellular signal transduction; SUCROSE; ARABIDOPSIS; ANTHOCYANINS; BIOACCUMULATION; GENETIC transcription
- Publication
Journal of Plant Research, 2011, Vol 124, Issue 1, p193
- ISSN
0918-9440
- Publication type
Article
- DOI
10.1007/s10265-010-0354-1