RPT-GLOBAL MARKETS-Dollar weakens, gold, bonds jump on U.S. data

* Stocks retreat on Putin comments over Syria aid * Euro rises, dollar slips against yen on jobs data * Oil hovers above $115 a barrel as Syria tensions persist By Herbert Lash NEW YORK, Sept 6 (Reuters) - The dollar weakened on Friday while gold and bonds prices jumped after a report showed U.S. jobs growth was less than expected in August, adding to uncertainty over when the Federal Reserve will begin to trim its massive bond-buying program. Stocks on Wall Street initial