Italy's bond yields pushed up by eurosceptic's remarks
European Affairs Minister Paolo Savona said Italy needed to be ready for "all eventualities" regarding its membership of the euro zone, which might depend on factors outside its control.
Savona was originally picked as economy minister by the anti-establishment coalition that took office last month, but the choice was vetoed by the head of state because of his critical views about the euro.
In a sign of how sensitive markets have become to Italian political developments, bond yields rose and Milan's blue-chip share index erased earlier gains after the remarks <.FTMIB>.
"He is a well-known eurosceptic and he seems to be being deliberately provocative," said Chris Scicluna, head of economic research at Daiwa Capital Markets in London.
"To the extent that we knew his views already, the latest comment provides a reminder that there are people in the government with these views and that the Italian government is on a path of confrontation with the European Union."
Italian 10-year bond yields <IT10YT=RR>, which had traded lower for much of the day, were up 1.5 basis points, while five-year bond yields were 2 bps higher at 1.81 percent <IT5YT=RR>.
The closely-watched gap between benchmark 10-year Italian and German government bond yields <DE10YT=RR> briefly widened to 240 bps before falling back to around 236 bps.
Most other euro zone bond yields edged higher as the first wave of this week's hefty bond supply hit the market.
Germany and Netherlands sold a combined amount of nearly 3 billion euros ($3.5 billion) of bonds on Tuesday, with Irish and Italian auctions to follow later in the week.
"There is a lot of duration-heavy supply this week with the overall market sentiment for risk supportive as the markets digest them," said Orlando Green, a fixed income strategist at Credit Agricole in London.
Gilt yields surged after data showed that UK economic growth had picked up momentum on a monthly basis, boosting expectations of a Bank of England interest rate increase in August.
That added to upward pressure on euro zone bond yields.
Benchmark 10-year gilt yields <GB10YT=RR> rose by more than four basis points to nearly 1.31 percent, on track for their biggest daily rise in more than a month.
A flattening bias was evident in the British yield curve with shorter-end debt supported by expectations of a rate rise in August, while concerns over the longer-term outlook for the economy kept a lid on yields in longer maturities.
Core German debt yields rose around 2 basis points on both five and 10-year maturities <DE5YT=RR> <DE10YT=RR>.
Greece's bond market continued its outperformance, with 10-year yields falling to five-month lows <GR10YT=RR> as rising risk appetite fostered demand for high-yielding debt.
(Reporting by Dhara Ranasinghe and Saikat Chatterjee, editing by John Stonestreet)
By Saikat Chatterjee and Dhara Ranasinghe