This book, like the first volume, is basically a collection of papers with the principal aim of offering the practical applications of the theory presented in volume 1. In consequence, this review will be, also, intends chapter by chapter. The first chapter intend to show communication in plants under the biosemiotic paradigm, which involves sign processes that are realized among plants of different species, plants with other organisms, and also among cells, and, even, in cells of the same plant. To that aim the author provides interesting examples in each kind of interaction. What is worth to note is the proposition that chemical molecules function as signs and that they are interpreted which implies that they are differing from molecules ...