Amelynck, C

Dewulf, Jo

Joó, Éva

Müller, JF

Pokorska, Olga

Schoon, N

Steppe, Kathy

Van Langenhove, Herman

English

Ghent University Academic Bibliography

Response of BVOC emissions from Fraxinus excelsior to biotic stress O.Pokorska (1),  J. Dewulf (1),  É. Joó (1), K. Steppe (2),  C. Amelynck (3), N. Schoon (3), J.-F. Müller (3), H. Van Langenhove (1)  (1) Research Group Environmental Organic Chemistry and Technology (EnVOC), Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium (2) Laboratory of Plant Ecology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium, (3) Belgian Institute for Space Aeronomy, Brussels, Belgium.     The emissions of biogenic volatile organic compounds (BVOCs) depend on many factors, mainly the types of vegetation species, developmental stage, as well as the densities of these species. In addition, BVOC emissions vary with environmental conditions (such as temperature, solar radiation, and plant water stress, nutrient availability), mechanically driven injury and infestation etc. Recently, Joó et al. (2010) discussed that trees should be considered as complex ecosystem interacting with the existing environment [1].     Fraxinus excelsior is a widely vegetated species in Europe, however limited information is available on BVOCs emission from this particular species [2,3]. In addition, the emission of volatiles compounds from infested Fraxinus excelsior was not previously studied. Therefore the objectives of this research are to: 1) setup a dynamic branch enclosure system to measure BVOC emission from Fraxinus excelsior; 2) study the direct effect of herbivores on BVOC emissions.    This study was conducted from May till October 2009 at the campus of Ghent University (Belgium). Four potted Fraxinus excelsior trees were used to carry out the experimental research and samples were collected on Tenax TA-Carbotrap solid phase adsorbent tubes and analyzed by TD-GC-MS. During the whole measurement period trees were infested with herbivores. In May visible Heteroptea damages on leaves surface were observed, then in June heavily Psyllopsis fraxini and Cecidomyiidae infestation occurred and in July Powdery Mildew appeared. Through the whole measurement season main emitted compounds were: (Z)-b-ocimene, (E)-b-ocimene. In total 10 compounds were detected in samples, including isoprene, 5 monoterpenes (MT), 2 oxygenated MT, 2 sesquiterpenes.    Our study as first one shows the effect of herbivore attacks on Fraxinus excelsior. Overall, results demonstrate that infested trees can contribute to the total BVOC emissions, even if they are recognized as non-BVOC emitters. Our research points the need of conducting the study of BVOC emission from vegetation in the field and considering the influence of field environmental factors.  We would like to emphasize our acknowledgement to BELSPO (Belgian Science Policy; IMPECVOC contract # SD/TE/03A) and to FWO (Fonds voor Wetenschappelijk Onderzoek; contract # B/07659/02) for supporting the research program.  [1] E. Joo et al., Atmos. Environ. 44 (2010) 227-234. [2] C.N. Hewitt, R. A. Street, Atmos Environ 26A (1992) 3069-3077 [3] K. Zemankova, J. Brechler, Environ. Pollut. 158 (2010) 462-469.  

Response of BVOC emissions from Fraxinus excelsior to biotic stress

https://biblio.ugent.be/publication/1339445/file/1339459

Response of BVOC emissions from Fraxinus excelsior to biotic stress

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