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Stress-specific emission of biogenic volatile organic compounds in response to extreme heat, moderate drought and mortality in Pinus halepensis seedlings

Birami, Benjamin; Bamberger, Ines; Grote, Rüdiger ORCID iD icon; Arneth, Almut; Ruehr, Nadine ORCID iD icon

Abstract (englisch):

Pine trees are among the plant species with highest biogenic volatile organic compound (BVOC) emission rates. In particular monoterpenes and, in certain pine species, acetone emissions have been shown to make up for the majority of BVOC fluxes. BVOCs are involved in ozone formation, methane degradation and cloud nucleation. Due to their impact on air chemistry and –quality they are thus important for human health. Furthermore, understanding emission patterns can aid to interpret plant metabolic changes during exposition of different stressor types. In this study, we want to show, (i) the emission response of different BVOC groups to extreme heat and moderate drought, and (ii) reveal mortality-specific BVOC emissions, during seedling mortality. One-year-old Pinus halepensis seedlings were grown under controlled conditions in a greenhouse facility. Two 4-day heatwaves (with max air temperature of 43°C) were applied to seedlings under well-watered (heat treatment) and drought conditions (heat-drought treatment), while the control and drought treatment seedlings were kept under ambient temperature conditions. Shoot gas exchange and emissions of BVOCs were continuously monitored using automatically operating chambers (n=4 per treatment). ... mehr

Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Poster
Publikationsdatum 10.04.2019
Sprache Englisch
Identifikator KITopen-ID: 1000105777
HGF-Programm 12.02.02 (POF III, LK 01) Vegetation climate- and land use system
Veranstaltung European Geosciences Union General Assembly (EGU 2019), Wien, Österreich, 07.04.2019 – 12.04.2019
Projektinformation CLiFF (DFG, DFG EIN, SCHM 2736/2-1_II)
Bemerkung zur Veröffentlichung Geophysical Research Abstracts

Vol. 21, EGU2019-16500, 2019
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