title: Isoprene emission-free poplars--a chance to reduce the impact from poplar plantations on the atmosphere.
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.
authors.affiliation: Helmholtz Zentrum München, Institute of Biochemical Plant Pathology, Research Unit Environmental Simulation (EUS), Ingolstädter Landstraße 1, D-85764 Neuherberg, Germany.
authors.forename: Katja
authors.initials: K
authors.lastname: Behnke
authors.affiliation: Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research (IMK-IFU), Kreuzeckbahnstraße 19, 82467 Garmisch-Partenkirchen, Germany.
authors.forename: Rüdiger
authors.initials: R
authors.lastname: Grote
authors.affiliation: Forschungszentrum Jülich, Agrosphere (IBG-3), 52425 Jülich, Germany.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Brüggemann
authors.affiliation: Helmholtz Zentrum München, Institute of Biochemical Plant Pathology, Research Unit Environmental Simulation (EUS), Ingolstädter Landstraße 1, D-85764 Neuherberg, Germany.
authors.forename: Ina
authors.initials: I
authors.lastname: Zimmer
authors.affiliation: Forest Botany and Tree Physiology, Büsgen-Institute, Georg-August-University Göttingen, Büsgenweg 2, 37077 Göttingen, Germany.
authors.forename: Guanwu
authors.initials: G
authors.lastname: Zhou
authors.affiliation: Forest Botany and Tree Physiology, Büsgen-Institute, Georg-August-University Göttingen, Büsgenweg 2, 37077 Göttingen, Germany.
authors.forename: Mudawi
authors.initials: M
authors.lastname: Elobeid
authors.affiliation: Forest Botany and Tree Physiology, Büsgen-Institute, Georg-August-University Göttingen, Büsgenweg 2, 37077 Göttingen, Germany.
authors.forename: Dennis
authors.initials: D
authors.lastname: Janz
authors.affiliation: Forest Botany and Tree Physiology, Büsgen-Institute, Georg-August-University Göttingen, Büsgenweg 2, 37077 Göttingen, Germany.
authors.forename: Andrea
authors.initials: A
authors.lastname: Polle
authors.affiliation: Helmholtz Zentrum München, Institute of Biochemical Plant Pathology, Research Unit Environmental Simulation (EUS), Ingolstädter Landstraße 1, D-85764 Neuherberg, Germany.
authors.forename: Jörg-Peter
authors.initials: JP
authors.lastname: Schnitzler
mesh_terms: D000397:Air Pollution / Q000517:prevention & control*; D001272:Atmosphere / Q000737:chemistry*; D018533:Biomass; D002070:Butadienes / Q000032:analysis*; D002244:Carbon / Q000378:metabolism; D002245:Carbon Dioxide / Q000378:metabolism; D002247:Carbon Isotopes; D002482:Cellulose / Q000378:metabolism; D003198:Computer Simulation; D003433:Crosses, Genetic; D045782:Hemiterpenes / Q000032:analysis*; D060434:Herbivory / Q000502:physiology; D008031:Lignin / Q000378:metabolism; D010420:Pentanes / Q000032:analysis*; D010788:Photosynthesis; D018526:Plant Transpiration / Q000502:physiology; D030821:Plants, Genetically Modified; D032107:Populus / Q000235:genetics / Q000254:growth & development*; D012621:Seasons; D017550:Spectroscopy, Fourier Transform Infrared; D055549:Volatile Organic Compounds / Q000032:analysis; D014934:Wood
chemical_list: D002070:Butadienes; D002247:Carbon Isotopes; D045782:Hemiterpenes; D010420:Pentanes; D055549:Volatile Organic Compounds; C005059:isoprene; D002245:Carbon Dioxide; D002244:Carbon; D002482:Cellulose; D008031:Lignin