Brazil’s President Dilma Rousseff has condemned the move to impeach her as a”coup” and a “farce”, denying she has committed any crimes.
She was addressing the nation on TV for the first time since senators voted overnight to suspend her for budgetary violations and put her on trial.
Ms Rousseff vowed to fight the “injustice” by all legal means.
Vice-President Michel Temer has now officially taken over as interim leader and has appointed a team.
Respected conservative Henrique Meirelles, who headed the central bank under leftist ex-President Luiz Inacio Lula da Silva, becomes finance minister.
Mr Temer will serve while Ms Rousseff’s trial takes place.
It may last up to 180 days, which would mean Ms Rousseff would be suspended during the Olympic Games in Rio de Janeiro, which start on 5 August.
Senators had voted to suspend her by 55 votes to 22 after an all-night session that lasted more than 20 hours.
Ms Rousseff is accused of illegally manipulating finances to hide a growing public deficit ahead of her re-election in 2014.