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4287097 
Book/Book Chapter 
Diversification of volatile isoprenoid emissions from trees: Evolutionary and ecological perspectives 
Fineschi, S; Loreto, F; Staudt, M; Peñuelas, K 
2013 
Springer 
New York, NY 
5 
1-20 
English 
is a chapter of 4287095 Biology, controls and models of tree volatile organic compound emissions
Not all tree species are strong constitutive volatile compound emitters, and a variety of hypotheses have been put forward to explain the evolution and the function of the emissions of volatile compounds. This chapter reviews the evolutionary and ecological aspects of volatile compound production in trees, specifically asking how and in which tree species the capacity for constitutive volatile production has evolved. The capacity for volatile emissions is a polyphyletic trait present in several diverse plant groups, but the presence of emission capacity is not directly related to phylogenetic distance among the species and species genera, demonstrating that the trait has evolved multiple times during evolution. We here review present volatile emission inventories highlighting the need for more worldwide, coordinated efforts to obtain realistic data of geographical and taxonomic patterns. We thereafter discuss the past evolution of isoprenoid emissions, and pose the questions of why isoprene emission is particularly widespread in hygrophytes, why it is a characteristic of mostly fast-growing perennial plants and why it is stimulated by low concentrations of CO2. Finally, we discuss the future, how climate and global change and the corresponding ecological constraints impact the diversification and emission of volatile organic compounds from plants. 
Volatile Organic Compound; Panicum Virgatum; Emission Inventory; Isopentenyl Diphosphate; Isoprene Emission 
Niinemets, Ü; Monson, RK 
Tree Physiology 
9789400766051