Journal Article

PreJuSER-21188

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Isoprene emission-free poplars - a chance to reduce the impact from poplar plantations on the atmosphere

Behnke, K. ; Grote, R. ; Brüggemann, N.FZJ* ; Zimmer, I. ; Zhou, G. ; Elobeid, M. ; Janz, D. ; Polle, A. ; Schnitzler, J. P.

2012
Wiley-Blackwell Oxford [u.a.]

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Please use a persistent id in citations: doi:10.1111/j.1469-8137.2011.03979.x

Abstract: • Depending on the atmospheric composition, isoprene emissions from plants can have a severe impact on air quality and regional climate. For the plant itself, isoprene can enhance stress tolerance and also interfere with the attraction of herbivores and parasitoids. • Here, we tested the growth performance and fitness of Populus × canescens in which isoprene emission had been knocked down by RNA interference technology (PcISPS-RNAi plants) for two growing seasons under outdoor conditions. • Neither the growth nor biomass yield of the PcISPS-RNAi poplars was impaired, and they were even temporarily enhanced compared with control poplars. Modelling of the annual carbon balances revealed a reduced carbon loss of 2.2% of the total gross primary production by the absence of isoprene emission, and a 6.9% enhanced net growth of PcISPS-RNAi poplars. However, the knock down in isoprene emission resulted in reduced susceptibility to fungal infection, whereas the attractiveness for herbivores was enhanced. • The present study promises potential for the use of non- or low-isoprene-emitting poplars for more sustainable and environmentally friendly biomass production, as reducing isoprene emission will presumably have positive effects on regional climate and air quality.

Keyword(s): Air Pollution: prevention & control (MeSH) ; Atmosphere: chemistry (MeSH) ; Biomass (MeSH) ; Butadienes: analysis (MeSH) ; Carbon: metabolism (MeSH) ; Carbon Dioxide: metabolism (MeSH) ; Carbon Isotopes (MeSH) ; Cellulose: metabolism (MeSH) ; Computer Simulation (MeSH) ; Crosses, Genetic (MeSH) ; Hemiterpenes: analysis (MeSH) ; Herbivory: physiology (MeSH) ; Lignin: metabolism (MeSH) ; Pentanes: analysis (MeSH) ; Photosynthesis (MeSH) ; Plant Transpiration: physiology (MeSH) ; Plants, Genetically Modified (MeSH) ; Populus: genetics (MeSH) ; Populus: growth & development (MeSH) ; Seasons (MeSH) ; Spectroscopy, Fourier Transform Infrared (MeSH) ; Volatile Organic Compounds: analysis (MeSH) ; Wood (MeSH) ; Butadienes ; Carbon Isotopes ; Hemiterpenes ; Pentanes ; Volatile Organic Compounds ; Carbon Dioxide ; Carbon ; isoprene ; Cellulose ; Lignin ; J ; biomass production (auto) ; modelling (auto) ; non-isoprene emitting (auto) ; outdoor conditions (auto) ; Populus canescens (auto)

Note: We are grateful to S. Wolfarth (University of Gottingen) and C. Kettner (University of Gottingen) for excellent technical assistance. We would like to thank G. Bahnweg (BIOP, Helmholtz Centre Munich) and P. Faubert (EUS, Helmholtz Centre Munich) for critical comments on the manuscript. This study was financially supported by the German Science Foundation (DFG; Schnitzler SCHN653/4 and Polle PO362/13) within the German joint research group 'Poplar-A model to address tree-specific questions' (FOR496) and by the European Commission within the Seventh Framework Programme for Research, Project Energypoplar (FP7-211917). G.W.Z. thanks the DAAD-CSC (German Academic Exchange Service - China Scholarship Council) Joint PhD scholarship programme and M. E. the University of Khartoum for providing PhD scholarships.

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Contributing Institute(s):

1. Agrosphäre (IBG-3)

Research Program(s):

1. Terrestrische Umwelt (P24)
2. ENERGYPOPLAR - Enhancing Poplar Traits for Energy Applications (211917) (211917)

Appears in the scientific report 2012

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Database coverage:
; BIOSIS Previews ; Current Contents - Agriculture, Biology and Environmental Sciences ; JCR ; NCBI Molecular Biology Database ; National-Konsortium ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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