March 6 (Reuters) - Canada's main stock index was up slightly on Tuesday, lifted by gains in gold producers as the price of the commodity rose, while global equities markets were supported by signs North Korea is willing to hold talks with theUnited States.
* At 10:39 a.m. EST (1539 GMT), the Toronto Stock Exchange's S&P/TSX composite index .GSPTSE rose 32.06 points, or 0.21 percent, to 15,573.34.
* South Korea said the North will also suspend nuclear tests while talks with the United States are underway. The prospect of talks after months of tensions betweenNorth Korea and the United States helped put a floor underglobal markets, though investors remained wary of the risk of a trade war after U.S. President Donald Trump said he was planning tariffs on steel and aluminum. MKTS/GLOB
* Gold producers .SPTTGD climbed 1.8 percent, helping to support the larger materials sector as gold prices firmed on the potential progress with North Korea. GOL/
* Goldcorp Inc G.TO rose 2.6 percent to C$16.99, whileT eck Resources Ltd TECKb.TO advanced 1.3 percent to C$36.75 as gold futures GCc1 rose 1.1 percent to $1,333.1 an ounce.
* Canadian National Railway Co CNR.TO was among thebiggest drags on the index, down 2.1 percent at C$95.08 as CIBCcut its target price to C$108 from C$111. The company's chiefexecutive officer abruptly stepped down on Monday. Bombardier Inc BBDb.TO fell 7.8 percent to C$3.69 afterthe company said it will sell equity to strengthen its balancesheet as part of a five-year turnaround plan. Canopy Growth Corp WEED.TO was among the more activelytraded stocks, up 3.3 percent at C$33.54 after Bloombergreported the cannabis producer had bid for Spanish firmAlcaliber SA. Volume on the TSX index was 49.95 million shares.