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Functional interconnections of HY1 with MYC2 and HY5 in Arabidopsis seedling development

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Title Functional interconnections of HY1 with MYC2 and HY5 in Arabidopsis seedling development
 
Creator Prasad, Babu Rajendra V
Kumar, Selva V
Nandi, Ashis
Chattopadhyay, Sudip
 
Subject HY1
MYC2
HY5
Arabidopsis
 
Description Accepted date: 17 March 2012
Arabidopsis seedling development is controlled by many regulatory genes involved in multiple signaling pathways.
The functional relationships of these genes working in multiple signaling cascades have started to be unraveled.
Arabidopsis HY1/HO1 is a rate-limiting enzyme involved in biosynthesis of phytochrome chromophore. HY5 (a bZIP
protein) promotes photomorphogenesis, however ZBF1/MYC2 (a bHLH protein) works as a negative regulator of
photomorphogenic growth and light regulated gene expression. Further, MYC2 and HY1 have been shown to play
important roles in jasmonic acid (JA) signaling pathways. Here, we show the genetic interactions of HY1 with two
key transcription factor genes of light signaling, HY5 and MYC2, in Arabidopsis seedling development. Our studies
reveal that although HY1 acts in an additive manner with HY5, it is epistatic to MYC2 in light-mediated seedling
growth and gene expression. This study further demonstrates that HY1 additively or synergistically functions with
HY5, however it works upstream to MYC2 in JA signaling pathways. Taken together, this study demonstrates the
functional interrelations of HY1, MYC2 and HY5 in light and JA signaling pathways.
This work is financially supported by Department of Biotechnology,
Government of India to S.C and A.N.; V.B.R.P is a recipient of UGC fellowship,
Government of India.
 
Date 2015-10-28T08:17:20Z
2015-10-28T08:17:20Z
2012
 
Type Article
 
Identifier BMC Plant Biol., 12: 37
http://www.biomedcentral.com/1471-2229/12/37
http://172.16.0.77:8080/jspui/handle/123456789/269
 
Language en_US
 
Publisher BMC