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Expression data from dark-grown AtGATA2 (At2g45050) overexpression transgenic line, homozygous bri1-116 and Col-0 wild type

ABSTRACT: Molecular genetic analyses support important roles for the AtGATA2 gene in brassinolide (BR) and light regulation of plant development. The overexpression line 6-9 of AtGATA2 suppresses the etiolated phenotype of Col-0 grown in the dark. Using microarray analysis, we identified genes differentially expressed in the AtGATA2ox transgenic line 6-9 compared to wild type, and genes differentially expressed in the AtGATA2ox transgenic line 6-9 compared to the bri1-116 single mutant. Consistent with the phenotypic similarity of bri1-116 and AtGATA2, overall about 93% of the co-regulated genes were affected in the same way by GATA2-ox and bri1-116. AtGATA2-regulated genes have been identified by comparing genes differentially expressed by the Col control and bri1-116, which could find the crosslink between light and BR regulations of plant development.

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: wenhui lin 

PROVIDER: E-GEOD-25396 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Integration of light- and brassinosteroid-signaling pathways by a GATA transcription factor in Arabidopsis.

Luo Xiao-Min XM   Lin Wen-Hui WH   Zhu Shengwei S   Zhu Jia-Ying JY   Sun Yu Y   Fan Xi-Ying XY   Cheng Menglin M   Hao Yaqi Y   Oh Eunkyoo E   Tian Miaomiao M   Liu Lijing L   Zhang Ming M   Xie Qi Q   Chong Kang K   Wang Zhi-Yong ZY  

Developmental cell 20101201 6

Light and brassinosteroid (BR) antagonistically regulate the developmental switch from etiolation in the dark to photomorphogenesis in the light in plants. Here, we identify GATA2 as a key transcriptional regulator that mediates the crosstalk between BR- and light-signaling pathways. Overexpression of GATA2 causes constitutive photomorphogenesis in the dark, whereas suppression of GATA2 reduces photomorphogenesis caused by light, BR deficiency, or the constitutive photomorphogenesis mutant cop1.  ...[more]

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