Dataset Information


Transcriptome analysis of dark-grown cop1 and cop1BBX22-GFPox plants

ABSTRACT: The proper accumulation of BBX22 mediated by COP1 is crucial for plants to maintain better growth fitness when growing in the dark environment as well as responding to seasonal changes in day-length. The constitutive-photomorphogenic development of the cop1 mutant is enhanced in cop1BBX22-GFPox plants, which show a short hypocotyl, high anthocyanin accumulation and expression of light-responsive genes. Target genes responsible for the exaggerated light phenotype in cop1BBX22-GFPox plants were revealed by comparing transcriptomes among dark-grown wild-type, cop1 and cop1BBX22-GFPox plants. Expression of genes regulated by light and multiple hormones are altered in plants over-accumulating BBX22, implying a coordination role of BBX22 in light- and hormone-mediated seedling development. Three biological replicates for 4-day-old etiolated seedlings of wild type (Col-0) and two mutants (cop1-4 and cop1-4BBX22-GFPox).

ORGANISM(S): Arabidopsis thaliana  

SUBMITTER: Shu-Hsing Wu   Chiung-Swey Joanne Chang  Chiung-Swey J Chang 

PROVIDER: E-GEOD-22983 | ArrayExpress | 2011-06-01



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COP1-mediated degradation of BBX22/LZF1 optimizes seedling development in Arabidopsis.

Chang Chiung-Swey Joanne CS   Maloof Julin N JN   Wu Shu-Hsing SH  

Plant physiology 20110322 1

Light regulates multiple aspects of growth and development in plants. Transcriptomic changes govern the expression of signaling molecules with the perception of light. Also, the 26S proteasome regulates the accumulation of positive and negative regulators for optimal growth of Arabidopsis (Arabidopsis thaliana) in the dark, light, or light/dark cycles. BBX22, whose induction is both light regulated and HY5 dependent, is a positive regulator of deetiolation in Arabidopsis. We found that during sk  ...[more]

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