The molecular mechanisms that control organ shape during flower development are largely unknown. By using differential hybridization techniques, a cDNA designated GEG (for Gerbera hybrida homolog of the gibberellin [GA]-stimulated transcript 1 [GAST1] from tomato) was isolated from a library representing late stages of corolla development in Gerbera. GEG expression was detected in corollas and carpels, with expression spatiotemporally coinciding with flower opening. In corollas and styles, GEG expression is temporally correlated with the cessation of longitudinal cell expansion. In plants constitutively expressing GEG, reduced corolla lengths and carpels with shortened and radially expanded stylar parts were found, with concomitant reduction of longitudinal cell expansion in these organs. In addition, in styles, an increase in radial cell expansion was detected. Taken together, these observations indicate a regulatory role for the GEG gene product in determining the shape of the corolla and carpel. The deduced amino acid sequence of the GEG gene product shares high similarity with previously characterized putative cell wall proteins encoded by GA-inducible genes, namely, GAST1, GIP (for GA-induced gene of petunia), and the GASA (for GA-stimulated in Arabidopsis) gene family. Our studies suggest that GEG, the expression of which can also be induced by application of GA3, plays a role in phytohormone-mediated cell expansion.

Brazil's Movimento de Trabalhadores Sem Teto (MTST, Homeless Workers' Movement) has grown dramatically in recent years. This growth was partly provided for by the use of a large government housing programme, Minha Casa Minha Vida (MCMV, My House My Life), which allowed the MTST to construct housing for its members and swell its ranks with thousands of new members. Yet some have argued that the MCMV programme used by the MTST may compromise the autonomy of civil society organisations. This article, by contrast, argues that while the MCMV programme encouraged bureaucratic practices, it also helped to promote the cultural politics of the MTST.

No abstract

No abstract

No abstract

Brazilian society has frequently been described as polarized during the country’s recent political and economic crisis. In 2018, a wave of opposition to the centre-left Workers’ Party culminated in the election of Jair Bolsonaro, a right-wing populist who portrays the political left as a malevolent force in Brazilian society. In this paper I explore this polarization through drawing on ethnographic research with the Homeless Workers’ Movement ( Movimento de Trablhadores Sem-Teto, MTST), a large urban social movement that develops settlements on underutilized land in the city, and a prominent civil society opponent of Bolsonaro. More specifically, I examine a key site of socio-spatial tension in São Paulo, Paulista Avenue, as a new political right came to predominate on the city’s main thoroughfare during the campaign to impeach the Workers’ Party President, Dilma Rousseff. I show how the perceived intolerance of the mobilized right helped to establish new normative codes that regulated the political symbolism which could be displayed in public spaces. Lastly, I consider how the vilification of the MTST in particular and the political left in general by the new right is embedded in broader structures of stigmatization.

No abstract

No abstract