FIND

researchers

DISCOVER

relevant articles

PROMOTE

your research

now for free

Riitta Julkunen-Tiitto

Research Profile

Living Beings

Chemicals & Drugs

Concepts & Ideas

Activities & Behaviors

Feeding Behavior

Physiology

Physiological Adaptations

Co-author Network

Publications

TOP 3
Mikaela Torp; Riitta Julkunen-Tiitto; Anna Lehrman; Johan A Stenberg; Christer Björkman
Performance of an herbivorous leaf beetle (Phratora vulgatissima) on Salix F2 hybrids: the importance of phenolics.
Line Nybakken; Riitta Julkunen-Tiitto
Gender differences in Salix myrsinifolia at the pre-reproductive stage are little affected by simulated climatic change.
Inga-Lill Persson; Otso Suominen; Märtha Wallgren; Roger Bergström; Riitta Julkunen-Tiitto; Kjell Danell
Simulated moose (Alces alces L.) browsing increases accumulation of secondary metabolites in bilberry (Vaccinium myrtillus L.) along gradients of habitat productivity and solar radiation.

Register for free to view:

Visualized networks:

See your personal network in
sophisticated graphical views

GeoTargeted Searches:

Locate experts around the world
and connect with global collaborators

Research Profiles:

See the research activity
of experts around the globe

Geonetwork of Riitta Julkunen-Tiitto (preview)

Cities where this author has publications
Cities where co-authors of this author have publications

Flash Player Required

All Publications

2013: Mikaela Torp; Riitta Julkunen-Tiitto; Anna Lehrman; Johan A Stenberg; Christer Björkman
Performance of an herbivorous leaf beetle (Phratora vulgatissima) on Salix F2 hybrids: the importance of phenolics.
Journal of chemical ecology 2013;39(4):516-24.
2013: Line Nybakken; Riitta Julkunen-Tiitto
Gender differences in Salix myrsinifolia at the pre-reproductive stage are little affected by simulated climatic change.
Physiologia plantarum 2013;147(4):465-76.
2012: Inga-Lill Persson; Otso Suominen; Märtha Wallgren; Roger Bergström; Riitta Julkunen-Tiitto; Kjell Danell
Simulated moose (Alces alces L.) browsing increases accumulation of secondary metabolites in bilberry (Vaccinium myrtillus L.) along gradients of habitat productivity and solar radiation.
Journal of chemical ecology 2012;38(10):1225-34.
2012: Minna Kosonen; Teija Ruuhola; C Peter Constabel; Sarita Keski-Saari; Riitta Julkunen-Tiitto
Effects of overproduction of condensed tannins and elevated temperature on chemical and ecological traits of genetically modified hybrid aspens (Populus tremula × P. tremuloides).
Journal of chemical ecology 2012;38(10):1235-46.
2012: Jaana Vuosku; Riitta Julkunen-Tiitto; Riina Muilu-Mäkelä; Peter Neubauer; Maria Ruottinen; Tytti Sarjala; Marjaana Suorsa; Suvi Sutela; Hely Häggman
Polyamine metabolism during exponential growth transition in Scots pine embryogenic cell culture.
Tree physiology 2012;32(10):1274-87.
2012: Line Nybakken; Riia Hörkkä; Riitta Julkunen-Tiitto
Combined enhancements of temperature and UVB influence growth and phenolics in clones of the sexually dimorphic Salix myrsinifolia.
Physiologia plantarum 2012;145(4):551-64.
2012: Anu Lavola; Reijo Karjalainen; Riitta Julkunen-Tiitto
Bioactive polyphenols in leaves, stems, and berries of Saskatoon (Amelanchier alnifolia Nutt.) cultivars.
Journal of agricultural and food chemistry 2012;60(4):1020-7.
2012: Joakim Hjältén; Riitta Julkunen-Tiitto; Carri J LeRoy; Anders Wennström; Thomas G Whitham; E Petter Axelsson; Gilles Pilate
Increased resistance of Bt aspens to Phratora vitellinae (Coleoptera) leads to increased plant growth under experimental conditions.
PloS one 2012;7(1):e30640.
2011: Dawood Hattas; Joakim Hjältén; Riitta Julkunen-Tiitto; Peter F Scogings; Tuulikki Rooke
Differential phenolic profiles in six African savanna woody species in relation to antiherbivore defense.
Phytochemistry 2011;72(14-15):1796-803.
2011: Teija Ruuhola; Tuomo Leppänen; Riitta Julkunen-Tiitto; Markus J Rantala; Tarja Lehto
Boron fertilization enhances the induced defense of silver birch.
Journal of chemical ecology 2011;37(5):460-71.
2010: Titta Kotilainen; Riitta Tegelberg; Riitta Julkunen-Tiitto; Anders Lindfors; Robert B O'Hara; Pedro Aphalo
Seasonal fluctuations in leaf phenolic composition under UV manipulations reflect contrasting strategies of alder and birch trees.
Physiologia plantarum 2010;140(3):297-309.
2010: Francoise Martz; Laura Jaakola; Riitta Julkunen-Tiitto; Sari Stark
Phenolic composition and antioxidant capacity of bilberry (Vaccinium myrtillus) leaves in Northern Europe following foliar development and along environmental gradients.
Journal of chemical ecology 2010;36(9):1017-28.
2010: Ulla Anttila; Riitta Julkunen-Tiitto; Matti Rousi; Shiyong Yang; Markus J Rantala; Teija Ruuhola
Effects of elevated ultraviolet-B radiation on a plant-herbivore interaction.
Oecologia 2010;164(1):163-75.
2010: Silvano Fares; Elina Oksanen; Mika Lännenpää; Riitta Julkunen-Tiitto; Francesco Loreto
Volatile emissions and phenolic compound concentrations along a vertical profile of Populus nigra leaves exposed to realistic ozone concentrations.
Photosynthesis research 2010;104(1):61-74.
2010: Niina Mm Saviranta; Riitta Julkunen-Tiitto; Elina Oksanen; Reijo O Karjalainen
Red clover (Trifolium pratense L.) isoflavones: root phenolic compounds affected by biotic and abiotic stress factors.
Journal of the science of food and agriculture 2010;90(3):418-23.
2010: Niina M M Saviranta; Riitta Julkunen-Tiitto; Elina Oksanen; Reijo O Karjalainen
Leaf phenolic compounds in red clover (Trifolium pratense L.) induced by exposure to moderately elevated ozone.
Environmental pollution (Barking, Essex : 1987) 2010;158(2):440-6.
2009: Elina Vapaavuori; Jarmo K Holopainen; Toini Holopainen; Riitta Julkunen-Tiitto; Seija Kaakinen; Anne Kasurinen; Sari Kontunen-Soppela; Katri Kostiainen; Elina Oksanen; Petri Peltonen; Johanna Riikonen; Ingmar Tulva
Rising atmospheric CO2 concentration partially masks the negative effects of elevated O3 in silver birch (Betula pendula Roth).
Ambio 2009;38(8):418-24.
2009: Francoise Martz; Minna Turunen; Riitta Julkunen-Tiitto; Kaisa Lakkala; Marja-Liisa Sutinen
Effect of the temperature and the exclusion of UVB radiation on the phenolics and iridoids in Menyanthes trifoliata L. leaves in the subarctic.
Environmental pollution (Barking, Essex : 1987) 2009;157(12):3471-8.
2009: Titta Kotilainen; Tuulia Venäläinen; Riitta Tegelberg; Anders Lindfors; Riitta Julkunen-Tiitto; Sirkka Sutinen; Robert B O'Hara; Pedro Aphalo
Assessment of UV biological spectral weighting functions for phenolic metabolites and growth responses in silver birch seedlings.
Photochemistry and photobiology 2009;85(6):1346-55.
2009: Francoise Martz; Rainer Peltola; Stéphane Fontanay; RAPHAEL EMMANUEL DUVAL; Riitta Julkunen-Tiitto; Sari Stark
Effect of latitude and altitude on the terpenoid and soluble phenolic composition of juniper (Juniperus communis) needles and evaluation of their antibacterial activity in the boreal zone.
Journal of agricultural and food chemistry 2009;57(20):9575-84.
2009: Titta Kotilainen; Jari Haimi; Riitta Tegelberg; Riitta Julkunen-Tiitto; Elina Vapaavuori; Pedro Aphalo
Solar ultraviolet radiation alters alder and birch litter chemistry that in turn affects decomposers and soil respiration.
Oecologia 2009;161(4):719-28.
2009: E Häikiö; M Makkonen; Riitta Julkunen-Tiitto; J Sitte; V Freiwald; T Silfver; V Pandey; E Beuker; Toini Holopainen; Elina Oksanen
Performance and secondary chemistry of two hybrid aspen (Populus tremula L. x Populus tremuloides Michx.) clones in long-term elevated ozone exposure.
Journal of chemical ecology 2009;35(6):664-78.
2009: Anne-Marja Nerg; Anne Kasurinen; Toini Holopainen; Riitta Julkunen-Tiitto; Seppo Neuvonen; Jarmo K Holopainen
Interactions of ectomycorrhizas and above-ground insect herbivores on silver birch.
Plant signaling & behavior 2009;4(4):355-7.
2009: Merja Heinäaho; Ann E Hagerman; Riitta Julkunen-Tiitto
Effect of different organic farming methods on the phenolic composition of sea buckthorn berries.
Journal of agricultural and food chemistry 2009;57(5):1940-7.
2009: Marja Roitto; Pasi Rautio; Annamari Markkola; Riitta Julkunen-Tiitto; Martti Varama; Karita Saravesi; Juha Tuomi
Induced accumulation of phenolics and sawfly performance in Scots pine in response to previous defoliation.
Tree physiology 2009;29(2):207-16.
2009: Suvi Sutela; Karoliina Niemi; Jaanika Edesi; Tapio Laakso; Pekka Saranpää; Jaana Vuosku; Riina Mäkelä; Heidi Tiimonen; Vincent L Chiang; Janne Koskimäki; Marja Suorsa; Riitta Julkunen-Tiitto; Hely Häggman
Phenolic compounds in ectomycorrhizal interaction of lignin modified silver birch.
BMC plant biology 2009;9():124.
2009: Hely Häggman; Anna Maria Pirttilä; Karoliina Niemi; Tytti Sarjala; Riitta Julkunen-Tiitto
Medicinal properties, in vitro protocols and secondary metabolite analyses of scots pine.
Methods in molecular biology (Clifton, N.J.) 2009;547():35-52.
2009: Elina Häikiö; Vera Freiwald; Riitta Julkunen-Tiitto; Egbert Beuker; Toini Holopainen; Elina Oksanen
Differences in leaf characteristics between ozone-sensitive and ozone-tolerant hybrid aspen (Populus tremula x Populus tremuloides) clones.
Tree physiology 2009;29(1):53-66.
2008: Sari Stark; Riitta Julkunen-Tiitto; Esa Holappa; Kari Mikkola; Ari Nikula
Concentrations of foliar quercetin in natural populations of white birch (Betula pubescens) increase with latitude.
Journal of chemical ecology 2008;34(11):1382-91.
2008: Anne-Marja Nerg; Anne Kasurinen; Toini Holopainen; Riitta Julkunen-Tiitto; Seppo Neuvonen; Jarmo K Holopainen
The significance of ectomycorrhizas in chemical quality of silver birch foliage and above-ground insect herbivore performance.
Journal of chemical ecology 2008;34(10):1322-30.
2007: Sari Stark; Riitta Julkunen-Tiitto; Jouko Kumpula
Ecological role of reindeer summer browsing in the mountain birch (Betula pubescens ssp. czerepanovii) forests: effects on plant defense, litter decomposition, and soil nutrient cycling.
Oecologia 2007;151(3):486-98.
2007: Timo Veteli; W J Mattson; P Niemelä; Riitta Julkunen-Tiitto; Seppo Kellomäki; K Kuokkanen; Anu Lavola
Do elevated temperature and CO2 generally have counteracting effects on phenolic phytochemistry of boreal trees?
Journal of chemical ecology 2007;33(2):287-96.
2007: Karoliina Niemi; Riitta Julkunen-Tiitto; Hely Häggman; Tytti Sarjala
Suillus variegatus causes significant changes in the content of individual polyamines and flavonoids in Scots pine seedlings during mycorrhiza formation in vitro.
Journal of experimental botany 2007;58(3):391-401.
2006: Satu Turtola; Leena Sallas; Jarmo K Holopainen; Riitta Julkunen-Tiitto; Pirjo Kainulainen
Long-term exposure to enhanced UV-B radiation has no significant effects on growth or secondary compounds of outdoor-grown Scots pine and Norway spruce seedlings.
Environmental pollution (Barking, Essex : 1987) 2006;144(1):166-71.
2006: Merja Heinäaho; Jyrki Pusenius; Riitta Julkunen-Tiitto
Effects of different organic farming methods on the concentration of phenolic compounds in sea buckthorn leaves.
Journal of agricultural and food chemistry 2006;54(20):7678-85.
2006: Merja Tiainen; Jyrki Pusenius; Riitta Julkunen-Tiitto; Heikki Roininen
Intraspecific competition, growth, chemistry, and susceptibility to voles in seedlings of Betula pendula.
Journal of chemical ecology 2006;32(10):2287-301.
2006: Anja H Hansen; Sven Jonasson; Anders Michelsen; Riitta Julkunen-Tiitto
Long-term experimental warming, shading and nutrient addition affect the concentration of phenolic compounds in arctic-alpine deciduous and evergreen dwarf shrubs.
Oecologia 2006;147(1):1-11.
2005: S Heiska; Matti Rousi; Satu Turtola; B Meier; V Tirkkonen; Riitta Julkunen-Tiitto
The effect of genotype and cultivation method on the total salicylate yield of dark-leaved willows (Salix myrsinifolia).
Planta medica 2005;71(12):1134-9.
2005: Tommi Nyman; Riitta Julkunen-Tiitto
Chemical variation within and among six northern willow species.
Phytochemistry 2005;66(24):2836-43.
2005: Jaana Laitinen; Riitta Julkunen-Tiitto; Matti Rousi; Jaakko Heinonen; Jorma Tahvanainen
Ontogeny and environment as determinants of the secondary chemistry of three species of white birch.
Journal of chemical ecology 2005;31(10):2243-62.
2005: Marja Roitto; Pasi Rautio; Riitta Julkunen-Tiitto; E Kukkola; Satu Huttunen
Changes in the concentrations of phenolics and photosynthates in Scots pine (Pinus sylvestris L.) seedlings exposed to nickel and copper.
Environmental pollution (Barking, Essex : 1987) 2005;137(3):603-9.
2005: Riitta Julkunen-Tiitto; Hely Häggman; Pedro Aphalo; Anu Lavola; Riitta Tegelberg; Timo Veteli
Growth and defense in deciduous trees and shrubs under UV-B.
Environmental pollution (Barking, Essex : 1987) 2005;137(3):404-14.
2005: Marja-Leena Laitinen; Riitta Julkunen-Tiitto; Jorma Tahvanainen; Jaakko Heinonen; Matti Rousi
Variation in birch (Betula pendula) shoot secondary chemistry due to genotype, environment, and ontogeny.
Journal of chemical ecology 2005;31(4):697-717.
2005: Karoliina Niemi; Riitta Julkunen-Tiitto; Riitta Tegelberg; Hely Häggman
Light sources with different spectra affect root and mycorrhiza formation in Scots pine in vitro.
Tree physiology 2005;25(1):123-8.
2004: Tarja Lehto; Anu Lavola; Riitta Julkunen-Tiitto; Pedro Aphalo
Boron retranslocation in Scots pine and Norway spruce.
Tree physiology 2004;24(9):1011-7.
2004: M Cecilia Rousseaux; Riitta Julkunen-Tiitto; Peter S Searles; ana leonor scopel; Pedro Aphalo; Carlos L Ballaré
Solar UV-B radiation affects leaf quality and insect herbivory in the southern beech tree Nothofagus antarctica.
Oecologia 2004;138(4):505-12.
2003: Sarita Keski-Saari; Riitta Julkunen-Tiitto
Early developmental responses of mountain birch (Betula pubescens subsp. czerepanovii) seedlings to different concentrations of phosphorus.
Tree physiology 2003;23(17):1201-8.
2003: Timo Veteli; Riitta Tegelberg; Jyrki Pusenius; M Sipura; Riitta Julkunen-Tiitto; Pedro Aphalo; Jorma Tahvanainen
Interactions between willows and insect herbivores under enhanced ultraviolet-B radiation.
Oecologia 2003;137(2):312-20.
2003: Marja Roitto; Annamari Markkola; Riitta Julkunen-Tiitto; Tytti Sarjala; Pasi Rautio; Karita Kuikka; Juha Tuomi
Defoliation-induced responses in peroxidases, phenolics, and polyamines in scots pine (Pinus sylvestris L.) needles.
Journal of chemical ecology 2003;29(8):1905-18.
2003: Hely Häggman; Alexander D Frey; Leena Ryynänen; Tuija Aronen; Riitta Julkunen-Tiitto; Heidi Tiimonen; Kaarina Pihakaski-Maunsbach; Soile Jokipii; Xiwen Chen; Pauli T Kallio
Expression of Vitreoscilla haemoglobin in hybrid aspen (Populus tremula x tremuloides).
Plant biotechnology journal 2003;1(4):287-300.
2003: Olli-Pekka Tikkanen; Riitta Julkunen-Tiitto
Phenological variation as protection against defoliating insects: the case of Quercus robur and Operophtera brumata.
Oecologia 2003;136(2):244-51.
2003: Teija Ruuhola; Riitta Julkunen-Tiitto; Pirjo Vainiotalo
In vitro degradation of willow salicylates.
Journal of chemical ecology 2003;29(5):1083-97.
2002: Riitta Tegelberg; Pedro Aphalo; Riitta Julkunen-Tiitto
Effects of long-term, elevated ultraviolet-B radiation on phytochemicals in the bark of silver birch (Betula pendula).
Tree physiology 2002;22(17):1257-63.
2000: Tommi Nyman; Riitta Julkunen-Tiitto
Manipulation of the phenolic chemistry of willows by gall-inducing sawflies.
Proceedings of the National Academy of Sciences of the United States of America 2000;97(24):13184-7.