(Recasts throughout, updates prices, adds market strategist’s quote) By Aaron Saldanha May 8 (Reuters) – An index of Latin American stocks rose on Wednesday, propped up by robust Brazilian shares gaining on optimism around a pension reform proposal, while most Latin American currencies firmed against a listless dollar. The latest round of U.S.-China trade talks start on Thursday, the results of which will broadly set the tone for Latin American markets. China is a key importer of a large chunk of the region’s resources exports. MSCI’s index of Latin American stocks rose 1.5%, with shares in index heavyweight Brazil gaining as Economy Minister Paulo Guedes made the case for pension reform to lawmakers at a special committee hearing in Congress. Angelo JR Amaral, an