This book covers the challenges and resources mass spectrometry-based metabolomics provides in support of forest tree research, with the goal to better understand the mechanisms and metabolic landscapes (i.e., primary and secondary metabolites, including phytohormones, and other specialized secondary metabolites) of forest tree species in response to our undeniably-changing climate. This book focuses on many economically- and ecologically-important forest tree genera such as Pinus, Populus, Picea, Eucalyptus, Quercus, Castanea, and Ulmus."--