There are a couple of points I should add. The Y-DNA test can only be taken by males, so you will need to find a male relative called Plantier. Also, no other Plantier has yet been tested, so you could compare your result with others with Plantier-like names but not yet with another Plantier. It would be good if you could get the Plantier ball rolling however -- someone has to be first.
Thanks for your interest,
John Plant Plant-like names DNA project co-ordinator