EMERGING MARKETS-Latam FX jumps as dollar weakens, China stimulus lifts commodity prices

* Mexico annual headline inflation persisted in upward trend * Brazil's real leads gains * Latam FX up 1.0%, stocks add 1.3% By Shashwat Chauhan Jan 24 (Reuters) – Currencies and stocks of most resource-rich Latin American countries advanced on Wednesday, as commodity prices got a boost after China announced fresh stimulus plans, while a softer U.S. dollar also acted as a catalyst for gains. MSCI's index for Latin American currencies gained 1.0% as of 1501 GMT, while stocks advanced 1.3%. Prices of most base metals and iron ore futures jumped after top commodities consumer China's central bank announced a deep cut to bank reserves, in a move that will inject about $140 billion of cash into the banking system and send a strong signal of support for a fragile economy and plunging stock markets.