Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 10, Issue 1, Pages 116-132Publisher
MDPI AG
DOI: 10.3390/ijms10010116
Keywords
Arabidopsis; SPL; co-expression; network; promoter
Funding
- National Natural Science Foundation of China [30600044, 30771463]
- Natural Science Foundation of Chongqing of China [2007BB1197, 2007BB1198]
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The SQUAMOSA PROMOTER BINDING PROTEIN-LIKE (SPL) gene family is an SBP-box transcription family in Arabidopsis. While several physiological responses to SPL genes have been reported, their biological role remains elusive. Here, we use a combined analysis of expression correlation, the interactome, and promoter content to infer the biological role of the SPL genes in Arabidopsis thaliana. Analysis of the SPL-correlated gene network reveals multiple functions for SPL genes. Network analysis shows that SPL genes function by controlling other transcription factor families and have relatives with membrane protein transport activity. The interactome analysis of the correlation genes suggests that SPL genes also take part in metabolism of glucose, inorganic salts, and ATP production. Furthermore, the promoters of the correlated genes contain a core binding cis-element (GTAC). All of these analyses suggest that SPL genes have varied functions in Arabidopsis.
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