Singapore share were up by midday, reversing two straight days of losses as investors regained some confidence from plans by major central banks to limit potential fallout following this Sunday's Greek elections.

At 0426 GMT, the benchmark Straits Times Index was up around 0.5 percent at 2,787.79.

Other Asian bourses were also up, with the MSCI Asia-Pacific index excluding Japan gaining 0.7 percent, slightly outperforming Singapore.

Officials from the G20 nations, whose leaders are meeting in Mexico next week, said that central banks were ready to take steps to stabilise financial markets - if needed - by providing liquidity and prevent any credit squeeze after Sunday's election.

Property developer CapitaLand Ltd and rigbuilder Sembcorp Marine were the biggest gainers on the index, rising about 2.7 percent and 2.3 percent respectively. Sembcorp was also the second most-traded stock by value.

1232 (0432 GMT) (Reporting by Leonard How in Singapore; leonard.how@thomsonreuters.com)