BRASILIA - Brazilian President Dilma Rousseff appointed a member of the scandal-tainted Communist Party as the country's new sports minister on Thursday, a day after the previous minister quit over corruption allegations.

Aldo Rebelo, a congressman with a nationalistic streak, will take up the role at a crucial time as the country prepares to host the 2014 World Cup and the 2016 Olympics.

He belongs to the Communist Party of Brazil, as does his predecessor Orlando Silva, who resigned on Wednesday after being accused of arranging up to 40 million reais ($23 million) in government contract kickbacks to benefit himself and his party, which is a member of Rousseff's ruling coalition.

Silva was the sixth minister to step down this year and the fifth who did so over ethics breaches. His departure was an embarrassment for the government as it struggles with delays and cost overruns for the World Cup soccer tournament.

The string of resignations in Rousseff's first year in office has raised questions about her judgment. But her relatively swift reaction to the scandals also has bolstered her reputation as a stern manager who does not tolerate corruption, lifting her popularity among Brazil's expanding middle class.

Rebelo's appointment aims to appease a sometimes unruly governing coalition and restore international confidence by speeding up preparations for the World Cup and Olympics.

"The government is so behind schedule with World Cup preparations that it will be difficult for the new minister to reverse this mistrust that has been formed abroad," said Jose Moises, a political scientist at the University of Sao Paulo.

Reuters