Switzerland's Syngenta is using Brunswick Group to handle media regarding its rejection of Monsanto's $45B acquisition play.

St. Louis-based Monsanto, which relies on Joele Frank, has proposed the largest agribusiness merger ever. A completed deal would create the No 1 worldwide supplier of seeds and crop sprays. ]

Michel Demaré, Syngenta chairman believes Monsanto's offer "does not reflect the outstanding growth prospects of Syngenta’s integrated strategy and the significant future value potential of the company’s crop-focused innovation and market leading positions."

In its statement, Monsanto said it has long respected Syngenta and believes a merger would benefit shareholders from both companies and "result in substantial synergies as the company delivers more integrated solutions to customers."

Steve Frankel and Scott Bisang represent Monsanto for Joele Frank.

Brunswick's Joe Coles/Richard Jacques (London) and Monika Driscoll/Tripp Kyle (New York) work Syngent.