Arabidopsis and Tobacco superman regulate hormone signalling and mediate cell proliferation and differentiation.

ABSTRACT: Arabidopsis thaliana superman (SUP) plays an important role during flower development by maintaining the boundary between stamens and carpels in the inner two whorls. It was proposed that SUP maintains this boundary by regulating cell proliferation in both whorls, as loss-of-function superman mutants produce more stamens at the expense of carpels. However, the cellular mechanism that underlies SUP function remains unknown. Here Arabidopsis or tobacco (Nicotiana tabacum) SUP was overexpressed in tobacco plants to substantiate SUP's role as a regulator of cell proliferation and boundary definition and provide evidence that its biological role may be mediated via hormonal changes. It was found that moderate levels of SUP stimulated cell growth and proliferation, whereas high levels were inhib

SUBMITTER: Nibau C 

PROVIDER: S-EPMC3022392 | biostudies-literature | 2011 Jan

REPOSITORIES: biostudies-literature