PubMed:17204538 JSONTXT

{"project":"PMID_GLOBAL","denotations":[{"id":"T1","span":{"begin":464,"end":467},"obj":"CellLine"},{"id":"T3","span":{"begin":496,"end":499},"obj":"CellLine"},{"id":"T5","span":{"begin":653,"end":656},"obj":"CellLine"},{"id":"T7","span":{"begin":1083,"end":1086},"obj":"CellLine"},{"id":"T9","span":{"begin":1109,"end":1112},"obj":"CellLine"},{"id":"T11","span":{"begin":1202,"end":1205},"obj":"CellLine"},{"id":"T13","span":{"begin":1341,"end":1344},"obj":"CellLine"},{"id":"T15","span":{"begin":1407,"end":1410},"obj":"CellLine"}],"attributes":[{"id":"A1","pred":"cellosaurus_accession_id","subj":"T1","obj":"CVCL_1147"},{"id":"A2","pred":"cellosaurus_accession_id","subj":"T1","obj":"CVCL_W419"},{"id":"A3","pred":"cellosaurus_accession_id","subj":"T3","obj":"CVCL_1147"},{"id":"A4","pred":"cellosaurus_accession_id","subj":"T3","obj":"CVCL_W419"},{"id":"A5","pred":"cellosaurus_accession_id","subj":"T5","obj":"CVCL_1147"},{"id":"A6","pred":"cellosaurus_accession_id","subj":"T5","obj":"CVCL_W419"},{"id":"A7","pred":"cellosaurus_accession_id","subj":"T7","obj":"CVCL_1147"},{"id":"A8","pred":"cellosaurus_accession_id","subj":"T7","obj":"CVCL_W419"},{"id":"A9","pred":"cellosaurus_accession_id","subj":"T9","obj":"CVCL_1147"},{"id":"A10","pred":"cellosaurus_accession_id","subj":"T9","obj":"CVCL_W419"},{"id":"A11","pred":"cellosaurus_accession_id","subj":"T11","obj":"CVCL_1147"},{"id":"A12","pred":"cellosaurus_accession_id","subj":"T11","obj":"CVCL_W419"},{"id":"A13","pred":"cellosaurus_accession_id","subj":"T13","obj":"CVCL_1147"},{"id":"A14","pred":"cellosaurus_accession_id","subj":"T13","obj":"CVCL_W419"},{"id":"A15","pred":"cellosaurus_accession_id","subj":"T15","obj":"CVCL_1147"},{"id":"A16","pred":"cellosaurus_accession_id","subj":"T15","obj":"CVCL_W419"}],"text":"Mutual regulation of Arabidopsis thaliana ethylene-responsive element binding protein and a plant floral homeotic gene, APETALA2.\nBACKGROUND AND AIMS: It has previously been shown that Arabidopsis thaliana ethylene-responsive element binding protein (AtEBP) contributed to resistance to abiotic stresses. Interestingly, it has also been reported that expression of ethylene-responsive factor (ERF) genes including AtEBP were regulated by the activity of APETALA2 (AP2), a floral homeotic factor. AP2 is known to regulate expression of several floral-specific homeotic genes such as AGAMOUS. The aim of this study was to clarify the relationship between AP2 and AtEBP in gene expression.\nMETHODS: Northern blot analysis was performed on ap2 mutants, ethylene-related Arabidopsis mutants and transgenic Arabidopsis plants over-expressing AtEBP, and a T-DNA insertional mutant of AtEBP. Phenotypic analysis of these plants was performed.\nKEY RESULTS: Expression levels of ERF genes such as AtEBP and AtERF1 were increased in ap2 mutants. Over-expression of AtEBP caused upregulation of AP2 expression in leaves. AP2 expression was suppressed by the null-function of ethylene-insensitive2 (EIN2), although AP2 expression was not affected by ethylene treatment. Loss of AtEBP function slightly reduced the average number of stamens.\nCONCLUSIONS: AP2 and AtEBP are mutually regulated in terms of gene expression. AP2 expression was affected by EIN2 but was not regulated by ethylene treatment."}