A well-structured and comprehensive summary of the strategies and several case studies for applying molecular plant genomics in the fields of plant ecotoxicology and plant ecology. The unique approach paves the way for uncovering molecular mechanisms of evolution, stress resistance and opens up new possibilities for plant breeding and sustainable agriculture. In particular, the text relates molecular stress responses and signalling pathways in plants to environmental interactions. This provides a molecular understanding of plant fitness, population dynamics, evolution as well as yield and resistance. Topics covered include: the major plant enzyme systems metabolizing xenobiotics; the signal transduction cascades; genetic mechanisms of elicitation; and how soil bacteria manipulate plant signal transduction cascades to the mutual benefit of both plant and microbe.