Board Thread:Theories and Speculation/@comment-27924662-20160817160245/@comment-26369387-20160817164551

^ That was only in the anime. In the manga Yamato was affected by IT despite Tobi (Zetsu) being wrapped around him(like it was wrapped around Obito, as seen in his flashback). So no, Tobi (Zetsu) wrapped around Yamato or his Wood Release would have not protected him from IT.