But Bo contested her accusation that he knew how the villa was paid for and poured scorn on her reliability as a witness.
"What's the credibility of Gu Kailai's testimony? She has changed, she is insane, and she often tells lies," he said. "She has been under severe pressure from the investigators to turn me in."
Under the bribery indictment, prosecutors accuse Bo of using his political posts to secure influence for others. They say that between 2000 and 2012, Bo, Gu and their son, Bo Guagua, received about 22 million renminbi ($3.6 million) in bribes from Xu and another Dalian businessman, Tang Xiaolin.
The embezzlement charge alleges that Bo and Gu transferred 5 million renminbi of public money from a construction project in Dalian to a private account through a law firm in Beijing.
And the abuse of power indictment relates to Bo's actions after he was informed about his wife's involvement in the killing of Heywood and Wang's attempted defection to the United States.