* Euro on back foot as finance ministers meet

* Stocks underpinned by Bernanke remarks

* Oil, commodities cling on to gains

By Mike Peacock

LONDON, Dec 6 (Reuters) - The dollar recouped some losses on Monday, having a taken a knock after the U.S. Federal Reserve said it was open to injecting more funds into the economy, while the euro weakened and world shares were flat.

Fed Chairman Ben Bernanke said on Sunday the central bank could end up buying more than the $600 billion in U.S. government bonds it has committed to purchase, if the economy fails to respond. [ID:nN05271909]

European shares were flat .FTEU3, supported by the belief that the Fed would do what it took to keep the U.S. economic recovery ticking along but still concerned about the spreading euro zone debt crisis.

"Markets have a clear message from the (U.S.) policymakers that they are in the business to ensure a sustained recovery," Mike Lenhoff, chief strategist at Brewin Dolphin, said.

The MSCI world equity index .MIWD00000PUS was down 0.1 percent at 321.78. Japan's Nikkei .N225 closed the day down 0.1 percent or 11.09 points at 10,167.23.

The prospect, following weak U.S. jobless figures, of more money sloshing around the U.S. economy had taken its toll on the dollar, but having shed more than 1 percent against a basket of currencies on Friday, it had scope for a bounce.

The dollar index .DXY was up 0.32 percent at 79.628, with the greenback pulling away from a three-week low against the yen JPY=.

"Friday's moves were so rapid that it is natural to have a bit of position unwinding," said Keiji Matsumoto, strategist at Nikko Cordial Securities. "There's also a feeling that there could be more bad news from the euro zone."