HONG KONG (AFP) - The euro held its ground in Asian trade Thursday after plunging to a four-year low on heightened anxiety about eurozone debt, while regional shares suffered a heavy knock-on effect from the crisis. Traders took their cue from relatively mild falls on Wall Street, where the Dow pared back earlier heavy losses to close down 0.63 percent after German rules to curb market speculators triggered turmoil Wednesday. The euro bounced on rumours of a possible intervention from the Federal Reserve, European Central Bank and Bank of England and claims that Greece may be about to leave the eurozone. The news boosted the euro to 1.2408 dollars in New York late trade but it eased back in Asia Thursday to 1.2327, although still off the four-year lows below 1.22 seen Wednesday. Once it becomes apparent that the ECB or any other central bank is not about to come to the rescue of the euro the downtrend is likely to resume, said Mitul Kotecha of Credit Agricole CIB. Eurozone finance chief Jean-Claude Juncker said Thursday he did not see the need for European policy-makers to act immediately to arrest the euros recent declines. I dont think this is a matter requiring immediate action, he told reporters at the Japanese finance ministry, responding to a question on whether Europe would take steps if the currencys losses accelerated. On share markets, Sydney dived to its lowest since August 21, 2009, tumbling 1.61 percent, or 70.6 points, to 4,316.5. Tokyo hit its lowest level since February 15, shedding 1.54 percent, or 156.53 points, to 10,030.31. Exporters, who see Europe as a key market, were hit by the weak euro, with the troubles outweighing data showing the Japanese economy surged an annualised 4.9 percent in the first quarter. Hong Kong ended down 0.17 percent, or 33.15 points, at 19,545.83 and Shanghai tumbled 1.23 percent, or 31.87 points, to 2,555.94. World markets have been sent reeling by the European debt crisis in recent weeks as fears abound that it could hurt the global recovery or even lead to another financial meltdown. And they slumped Wednesday as a surprise German strike against speculative trading backfired, panicking nervous investors instead of reassuring them that the authorities were fully in control. Chancellor Angela Merkel called for a radical overhaul of Europes fiscal rules along German lines, warning of incalculable consequences for the European Union if the euro were to fail. The markets remain concerned despite a near trillion-dollar package to prevent the troubles of debt-ridden Greece spreading to the rest of Europe. Athens on Wednesday averted a default by tapping into a multi-billion-euro EU rescue package as unions geared up for a new general strike against harsh austerity measures. A transfusion of 14.5 billion euros (18 billion dollars) a day earlier from its eurozone peers arrived just in time for Greece to meet its first debt deadline. Investors also looked to the United States, where consumer prices fell for the first time in 13 months in April, suggesting there will be no hike soon in interest rates. The US Senate on Wednesday voted against suspending debate on the most sweeping overhaul of financial industry rules since the Great Depression of the 1930s, clouding the sectors future. Bangkok was closed as the Thai capital was hit by violent clashes between anti-government protesters and security forces that have left dozens dead.