The emission factor of volatile isoprenoids : stress, acclimation, and developmental responses
Niinemets, Ülo (Eesti Maaülikool)
Arneth, Almut (Lunds Universitet. Institutionen för naturgeografi och ekosystemvetenskap)
Kuhn, U. (Forschungsanstalt Agroscope Reckenholz-Tänikon)
Monson, R. K. (University of Colorado. Department of Ecology and Evolutionary Biology)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Staudt, M. (Centre d'Ecologie Fonctionnelle et Evolutive)

Data:	2010
Resum:	The rate of constitutive isoprenoid emissions from plants is driven by plant emission capacity under specified environmental conditions (ES, the emission factor) and by responsiveness of the emissions to instantaneous variations in environment. In models of isoprenoid emission, ES has been often considered as intrinsic species-specific constant invariable in time and space. Here we analyze the variations in species-specific values of ES under field conditions focusing on abiotic stresses, past environmental conditions and developmental processes. The reviewed studies highlight strong stress-driven, adaptive (previous temperature and light environment and growth CO₂ concentration) and developmental (leaf age) variations in ES values operating at medium to long time scales. These biological factors can alter species-specific ES values by more than an order of magnitude. While the majority of models based on early concepts still ignore these important sources of variation, recent models are including some of the medium- to long-term controls. However, conceptually different strategies are being used for incorporation of these longer-term controls with important practical implications for parameterization and application of these models. This analysis emphasizes the need to include more biological realism in the isoprenoid emission models and also highlights the gaps in knowledge that require further experimental work to reduce the model uncertainties associated with biological sources of variation.
Ajuts:	Ministerio de Ciencia e Innovación CSD2008-00040 Ministerio de Ciencia e Innovación CGL2006-04025/BOS Agència de Gestió d'Ajuts Universitaris i de Recerca 2009/SGR-458
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Publicat a:	Biogeosciences, Vol. 7, issue 7 (2010) , p. 2203-2223, ISSN 1726-4189

DOI: 10.5194/bg-7-2203-2010

21 p, 462.8 KB

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