BOLITA, an Arabidopsis  AP2/ERF-like transcription  factor that affects  cell expansion  and proliferation/differentiation pathways

Marsch-Martinez, Nayelli; Greco, Raffaella; Becker, Jorg D.; Dixit, Shital; Bergervoet, Jan H. W.; Karaba, Aarati Aarati; de Folter, Stefan; Pereira, Andy

http://hdl.handle.net/10400.7/103

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Authors

Marsch-Martinez, Nayelli

Greco, Raffaella

Becker, Jorg D.

Dixit, Shital

Bergervoet, Jan H. W.

Karaba, Aarati Aarati

de Folter, Stefan

Pereira, Andy

Abstract(s)

The BOLITA (BOL) gene, an AP2/ERF transcription factor, was characterized with the help of an activation tag mutant and overexpression lines in Arabidopsis and tobacco. The leaf size of plants overexpressing BOL was smaller than wild type plants due to a reduction in both cell size and cell number. Moreover, severe overexpressors showed ectopic callus formation in roots. Accordingly, global gene expression analysis using the overexpression mutant reflected the alterations in cell proliferation, differentiation and growth through expression changes in RBR, CYCD, and TCP genes, as well as genes involved in cell expansion (i.e. expansins and the actin remodeling factor ADF5). Furthermore, the expression of hormone signaling (i.e. auxin and cytokinin), biosynthesis (i.e. ethylene and jasmonic acid) and regulatory genes was found to be perturbed in bol-D mutant leaves

Keywords

AP2/ERF transcription factor organ size cell growth

URI

http://hdl.handle.net/10400.7/103
http://dx.doi.org/10.1007/s11103-006-9059-1

Citation

Marsch-Martinez, N., Greco, R., Becker, J.D., Dixit, S., Bergervoet, J.H.W., Karaba, A., Folter, S., Pereira, A. (2006). "BOLITA, an Arabidopsis AP2/ERF-like transcription factor that affects cell expansion and proliferation/differentiation pathways." Plant Molecular Biology 62(6): 825-843