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Trends Plant Sci

Title:		Evolution of isoprene emission capacity in plants
Author(s):		Dani KG; Jamie IM; Prentice IC; Atwell BJ;
Address:		"Department of Biological Sciences, Macquarie University, North Ryde, Sydney, NSW 2109, Australia; Department of Chemistry and Biomolecular Sciences, Macquarie University, North Ryde, Sydney, NSW 2109, Australia. Department of Chemistry and Biomolecular Sciences, Macquarie University, North Ryde, Sydney, NSW 2109, Australia. Department of Biological Sciences, Macquarie University, North Ryde, Sydney, NSW 2109, Australia; Grantham Institute for Climate Change, and Division of Biology, Imperial College London, Silwood Park, Ascot SL5 7PY, UK. Department of Biological Sciences, Macquarie University, North Ryde, Sydney, NSW 2109, Australia. Electronic address: brian.atwell@mq.edu.au"
Journal Title:		Trends Plant Sci
Year:		2014
Volume:		20140226
Issue:		7
Page Number:		439 - 446
DOI:		10.1016/j.tplants.2014.01.009
ISSN/ISBN:		1878-4372 (Electronic) 1360-1385 (Linking)
Abstract:		"Light-dependent de novo volatile isoprene emission by terrestrial plants (approximately 2% of carbon fixed during photosynthesis) contributes as much as 0.5 PgC/year to the global carbon cycle. Although most plant taxa exhibit either constitutive or inducible monoterpene emissions, the evolution of isoprene emission capacity in multiple lineages has remained unexplained. Based on the predominant occurrence of isoprene emission capacity in long-lived, fast-growing woody plants; the relationship between 'metabolic scope' of tree genera and their species richness; and the proposed role of high growth rates and long generation times in accelerating molecular evolution, we hypothesise that long-lived plant genera with inherently high speciation rates have repeatedly acquired and lost the capacity to emit isoprene in their evolutionary history"
Keywords:		Butadienes/*metabolism Carbon Dioxide/metabolism Hemiterpenes/biosynthesis/*metabolism Light Pentanes/*metabolism Plants/chemistry/*genetics/radiation effects Temperature Volatile Organic Compounds/*metabolism;
Notes:		"MedlineDani, K G Srikanta Jamie, Ian M Prentice, I Colin Atwell, Brian J eng Research Support, Non-U.S. Gov't England 2014/03/04 Trends Plant Sci. 2014 Jul; 19(7):439-46. doi: 10.1016/j.tplants.2014.01.009. Epub 2014 Feb 26"