* Emerging markets rebound, Japan remains in focus
* South Africa rand, Polish zloty biggest FX losers
* Dollar/dinar one-year forwards rise on Bahraini unrest
By Sebastian Tong
LONDON, March 16 (Reuters) - Emerging markets steadied on Wednesday after the previous day's losses but remain vulnerable to another selloff while Japan battles to contain leaking radiation from a quake-damaged nuclear complex in its northeast.
South Africa's rand tumbled to near three-week lows to the dollar on fears Japanese funds would repatriate capital from overseas and one-year dollar/Bahraini dinar forwards spiked up as authorities persisted with a violent crackdown on protesters.
Japanese shares led a rebound in the Asian session, boosted by short covering and bargain hunting after a two-day rout.
The Federal Reserve also bolstered sentiment when it reiterated on Tuesday that it would support the U.S. economy by keeping its key rates "exceptionally low" for "an extended period". [
]"We will be focused on Japan for a while and that has serious implications for assets around the world. Japanese capital has intense links with other emerging markets," said Luis Costa, head of CEEMEA debt and forex strategy at Citi.
The emerging equity benchmark <.MSCIEF> rebounded 0.8 percent by 1205 GMT to recover from Tuesday's near five-week lows while emerging sovereign debt <11EMJ> narrowed 1 basis point to trade at 273 bps over U.S. Treasuries.
Czech shares <
> firmed from three-month lows on Tuesday while South African shares <.JTOPI> rallied over 1 percent after skidding to 15-week lows in the previous session. Russian shares < > climbed 0.8 percent higher from Tuesday's three-week lows and Turkish shares < > firmed half a percentage point to three-week highs.Uncertainty over Japan's ability to prevent a major radiation leak from its stricken Fukushima nuclear plant is likely to continue to limit market gains. Aftershocks from Friday's massive earthquake are still rattling Tokyo and recovery efforts are underway in Japan's tsunami-hit northeast coast. [
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REPATRIATION FEARS
Brazil was the third-largest source of foreign bonds held by Japan-based investment funds at $20.9 billion, Thomson Reuters data shows. [
]"The rand, the Brazilian real and to some extent, the Polish zloty -- these are emerging market pockets that have been explored by Japanese retail money and exposed to repatriation flows," said Citi's Costa.
Fears of a repatriation of Japanese overseas capital fuelled a selloff in the rand, which slipped 0.3 percent <ZAR=> against the greenback.
The zloty <EURPLN=> was also among the day's biggest currency losers, shedding 0.5 percent against the euro, to stay near Tuesday's 3-1/2 month lows.
Below-forecast Polish inflation figures added pressure on the zloty as they raised doubts Poland's central bank would raise interest rates next month. [
]An increasingly violent confrontation between Bahraini government forces and an uprising backed by the island's Shi'ite Muslim majority pushed the Bahrain dinar to a multi-year low in the forwards market. One-year dollar/dinar forwards <BHD1Y=> were quoted as high as 200 points, the highest level since at least the year 2000, a senior bank trader said. [
]The rise suggests investors are increasingly betting on a depreciation of the country's pegged currency.
Popular uprisings in the Middle East have dented sovereign credit ratings in the region. Moody's on Wednesday cut Egypt's raing to Ba3, just above junk, while Bahrain had its rating cut to BBB by Fitch late on Tuesday. (Additional reporting by Sujata Rao; editing by Susan Fenton)