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A new modelling approach for estimating abiotic and biotic stress-induced de novo emissions of biogenic volatile organic compounds from plants

Grote, Rüdiger; Sharma, Monica; Ghirardo, Andrea; Schnitzler, Jörg-Peter

Abstract:
The emission of biogenic volatile organic compounds (BVOCs) is usually thought to depend on species-specific emission capacities that vary with seasonal and phenological conditions. Actual—so called constitutive—emissions are then calculated from prevailing temperature and radiation. However, various abiotic and biotic stressors such as ozone, extreme radiation and temperature conditions, as well as wounding e.g., from insect feeding, can lead to de-novo emissions of stress-induced BVOCs (sBVOCs) that may excel constitutive emissions by more than an order of magnitude. These emissions often have a considerable different compound composition and are short-lived but can prolong under continuous stress for quite some time. Thus, they may easily have a large impact on overall regional BVOC emissions. However, sBVOCs are generally not considered in models since up to date no consistent mechanism has been proposed. This manuscript suggests a new mechanism based on the finding that sBVOCs originate from a handful of biosynthetic pathways which synthesize compounds in the groups of monoterpenes, sesquiterpenes, and green leave volatiles, as well as methyl salicylate, ethanol/acetaldehyde, methanol/formaldehyde, and acetone. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000095980
Veröffentlicht am 12.07.2019
Originalveröffentlichung
DOI: 10.3389/ffgc.2019.00026
Coverbild
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Jahr 2019
Sprache Englisch
Identifikator ISSN: 2624-893X
KITopen-ID: 1000095980
Erschienen in Frontiers in Forests and Global Change
Band 2
Seiten Article no: 26
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 25.06.2019
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