Partnership deals happen in the background without anyone knowing about it unless you are in the scene. Fact is that they could've done this deal without such an announcement and people/investors in the know within SV would've heard about it.
The fact is that Monsanto has a long history of harmful activities in the United States (http://en.wikipedia.org/wiki/Monsanto#Environmental_and_heal...) and the world (http://topdocumentaryfilms.com/the-world-according-to-monsan...) that it is a red flag. Sure, Cloudant isn't a bio warfare company, but the fact is that they are proud to be associated with Monsanto.