Search Results - "Holopainen, J. K."

Potential of Climate Change and Herbivory to Affect the Release and Atmospheric Reactions of BVOCs from Boreal and Subarctic Forests by Yu, H, Holopainen, J K, Kivimäenpää, M, Virtanen, A, Blande, J D

“…Compared to most other forest ecosystems, circumpolar boreal and subarctic forests have few tree species, and are prone to mass outbreaks of herbivorous…”
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Plant-derived Secondary Organic Material in the Air and Ecosystems by Holopainen, J.K., Kivimäenpää, M., Nizkorodov, S.A.

“…Biogenic secondary organic aerosol (SOA) and deposited secondary organic material (SOM) are formed by oxidation of volatile organic compounds (VOCs) emitted by…”
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Biotic stress accelerates formation of climate-relevant aerosols in boreal forests by Joutsensaari, J, Yli-Pirilä, P, Korhonen, H, Arola, A, Blande, J D, Heijari, J, Kivimäenpää, M, Mikkonen, S, Hao, L, Miettinen, P, Lyytikäinen-Saarenmaa, P, Faiola, C L, Laaksonen, A, Holopainen, J K

“…Boreal forests are a major source of climate-relevant biogenic secondary organic aerosols (SOAs) and will be greatly influenced by increasing temperature…”
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Bounce behavior of freshly nucleated biogenic secondary organic aerosol particles by Virtanen, A., Kannosto, J., Kuuluvainen, H., Arffman, A., Joutsensaari, J., Saukko, E., Hao, L., Yli-Pirilä, P., Tiitta, P., Holopainen, J. K., Keskinen, J., Worsnop, D. R., Smith, J. N., Laaksonen, A.

“…The assessment of the climatic impacts and adverse health effects of atmospheric aerosol particles requires detailed information on particle properties…”
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Olfactory responses of Plutella xylostella natural enemies to host pheromone, larval frass, and green leaf cabbage volatiles by REDDY, G. V. P, HOLOPAINEN, J. K, GUERRERO, A

“…The parasitoids Trichogramma chilonis (Hymenoptera: Trichogrammatidae) and Cotesia plutellae (Hymenoptera: Braconidae), and the predator Chrysoperla carnea…”
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New particle formation from the oxidation of direct emissions of pine seedlings by Hao, L. Q., Yli-Pirilä, P., Tiitta, P., Romakkaniemi, S., Vaattovaara, P., Kajos, M. K., Rinne, J., Heijari, J., Kortelainen, A., Miettinen, P., Kroll, J. H., Holopainen, J. K., Smith, J. N., Joutsensaari, J., Kulmala, M., Worsnop, D. R., Laaksonen, A.

“…Measurements of particle formation following the gas phase oxidation of volatile organic compounds (VOCs) emitted by Scots pine (Pinus sylvestris L.) seedlings…”
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Long-term effects of exogenous methyl jasmonate application on Scots pine (Pinus sylvestris) needle chemical defence and diprionid sawfly performance by Heijari, J., Nerg, A.-M., Kainulainen, P., Vuorinen, M., Holopainen, J. K.

“…Scots pine [Pinus sylvestris L. (Pinaceae)] trees with four different seed origins were exposed to exogenous applications of the elicitor, methyl jasmonate…”
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Nanoparticle formation by ozonolysis of inducible plant volatiles by Joutsensaari, J., Loivamäki, M., Vuorinen, T., Miettinen, P., Nerg, A.-M., Holopainen, J. K., Laaksonen, A.

“…We present the first laboratory experiments of aerosol formation from oxidation of volatile organic species emitted by living plants, a process which for half…”
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Elevated ozone modifies the feeding behaviour of the common leaf weevil on hybrid aspen through shifts in developmental, chemical, and structural properties of leaves by Freiwald, V, Häikiö, E, Julkunen-Tiitto, R, Holopainen, J.K, Oksanen, E

“…In this study, we tested the impact of moderately elevated ozone (O₃) - 1.5 x ambient, equivalent to predicted near-future ozone concentrations - on the…”
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Terpene Composition Complexity Controls Secondary Organic Aerosol Yields from Scots Pine Volatile Emissions by Faiola, C. L., Buchholz, A., Kari, E., Yli-Pirilä, P., Holopainen, J. K., Kivimäenpää, M., Miettinen, P., Worsnop, D. R., Lehtinen, K. E. J., Guenther, A. B., Virtanen, A.

“…Secondary organic aerosol (SOA) impact climate by scattering and absorbing radiation and contributing to cloud formation. SOA models are based on studies of…”
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Hylobius abietis L. feeding on the novel host Pinus brutia Ten. increases emission of volatile organic compounds by Semiz, G., Erbilgin, N., Holopainen, J. K.

“…Plants respond to feeding by herbivorous insects by producing volatile organic chemicals, which mediate interactions between herbivores and plants. Yet, few…”
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Effects of limonene on the growth and physiology of cabbage (Brassica oleracea L.) and carrot (Daucus carota L) plants by Ibrahim, M.A, Oksanen, E.J, Holopainen, J.K

“…Monoterpenes are plant-based alternatives for pest control in sustainable agriculture. This study investigated the phytotoxic effects of the monoterpene…”
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influence of elevated CO2 and O3 concentrations on Scots pine needles: changes in starch and secondary metabolites over three exposure years by Kainulainen, P, Holopainen, J.K, Holopainen, T

“…Scots pine (Pinus sylvestris L.) trees, aged about 20 years old, growing on a natural pine heath were exposed to two concentrations of CO₂ (ambient CO₂ and…”
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Secondary Metabolite Concentrations and Terpene Emissions of Scots Pine Xylem after Long-Term Forest Fertilization by Turtola, S, Manninen, A.M, Holopainen, J.K, Levula, T, Raitio, H, Kainulainen, P

“…Secondary compounds are known to be associated with the resistance of conifer xylem against insects and fungi. The effects of long-term forest fertilization…”
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Significance of wood terpenoids in the resistance of Scots pine provenances against the old house borer, Hylotrupes bajulus, and brown-rot fungus, Coniophora puteana by Nerg, A.M, Heijari, J, Noldt, U, Viitanen, H, Vuorinen, M, Kainulainen, P, Holopainen, J.K

“…We tested how terpenoid (i.e., monoterpenes and resin acids) composition and concentration in wood affects resistance against wood-borers and decaying fungi…”
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Combined Effects of Ozone and Nitrogen on Secondary Compounds, Amino Acids, and Aphid Performance in Scots Pine by Kainulainen, P., Holopainen, J. K., Holopainen, T.

“…Combined effects of O3 and N supply on Scots pine (Pinus sylvestris L.) were studied in two separate growth chamber experiments exposing seedlings to 0, 0.075,…”
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Foliar methyl salicylate emissions indicate prolonged aphid infestation on silver birch and black alder by Blande, James D, Korjus, Minna, Holopainen, Jarmo K

“…It is well documented that when plants are damaged by insects they respond by emitting a range of volatile organic compounds (VOCs). While there have been…”
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Responses of spruce seedlings ( Picea abies) to exhaust gas under laboratory conditions— I plant–insect interactions by Viskari, E.-L., Surakka, J., Pasanen, P., Mirme, A., Kössi, S., Ruuskanen, J., Holopainen, J.K.

“…The effects of motor vehicle exhaust gas on Norway spruce seedlings ( Picea abies (L.) Karst) and plant–insect interaction of spruce shoot aphid ( Cinara…”
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The influence of exogenous monoterpene treatment and elevated temperature on growth, physiology, chemical content and headspace volatiles of two carrot cultivars ( Daucus carota L.) by Ibrahim, M.A., Nissinen, A., Prozherina, N., Oksanen, E.J., Holopainen, J.K.

“…We investigated the effects of application of aqueous solution (50 ml l −1) of limonene spray (LS) on growth, physiology, foliar and root chemistry and…”
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Mass yields of secondary organic aerosols from the oxidation of α-pinene and real plant emissions by Hao, L. Q., Romakkaniemi, S., Yli-Pirilä, P., Joutsensaari, J., Kortelainen, A., Kroll, J. H., Miettinen, P., Vaattovaara, P., Tiitta, P., Jaatinen, A., Kajos, M. K., Holopainen, J. K., Heijari, J., Rinne, J., Kulmala, M., Worsnop, D. R., Smith, J. N., Laaksonen, A.

“…Biogenic volatile organic compounds (VOCs) are a significant source of global secondary organic aerosol (SOA); however, quantifying their aerosol forming…”
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