Virpi Virjamo

Tarkenna hakuasi

Tutkin ympäristötekijöiden, metsäpuiden puolustuskemian, ja maaperän mikrobien, erityisesti sienijuurien vuorovaikutuksia.

Tutkimusryhmät

Peat&Trees - Suo- ja maaekologian tutkimusryh… 02.02.2012 -

Projektit

ECHO - Kansalaisten osallistaminen maaperätieteeseen: Tie terveempään maaperään 01.06.2023 - 31.05.2027

Avainsanat

boreaaliset metsät ilmaston lämpeneminen kasvien puolustusaineet sienijuuret

Julkaisut

33/33 kappaletta

Responses of needle terpene concentrations and characteristics of resin canals to different warming treatments in Scots pine and Norway spruce seedlings grown in a field experiment
Kivimäenpää, Minna; Virjamo, Virpi; Nissinen, Katri; Pikkarainen, Laura; Ghimire, Rajendra P.; Julkunen-Tiitto, Riitta; Peltola, Heli. 2025. Canadian journal of forest research-revue canadienne de recherche forestiere. 55: 1-9 A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Characterisation, Recovery and Activity of Hydrophobic Compounds in Norway Spruce Log Soaking Pit Water: Could they be Used in Wood Preservative Formulations?
Barbero-López, Aitor; Vek, Viljem; Poljanšek, Ida; Virjamo, Virpi; López-Gómez, Yeray Manuel; Sainio, Tuomo; Humar, Miha; Oven, Primož; Haapala, Antti. 2022. Waste and biomass valorization. 13: 2553-2564 A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Responses in growth and emissions of biogenic volatile organic compounds in Scots pine, Norway spruce and silver birch seedlings to different warming treatments in a controlled field experiment
Pikkarainen, Laura; Nissinen, Katri; Ghimire, Rajendra Prasad; Kivimäenpää, Minna; Ikonen, Veli-Pekka; Kilpeläinen, Antti; Virjamo, Virpi; Yu, Hao; Kirsikka-Aho, Sara; Salminen, Timo; Hirvonen, Jukka; Vahimaa, Timo; Luoranen, Jaana; Peltola, Heli. 2022. Science of the total environment. 821: A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Accumulation of phenolics and growth of dioecious Populus tremula (L.) seedlings over three growing seasons under elevated temperature and UVB radiation
Sobuj, Norul; Nissinen, Katri; Virjamo, Virpi; Salonen, Anneli; Sivadasan, Unnikrishnan; Randriamanana, Tendry; Ikonen, Veli-Pekka; Kilpeläinen, Antti; Julkunen-Tiitto, Riitta; Nybakken, Line; Mehtätalo, Lauri; Peltola, Heli. 2021. Plant physiology and biochemistry
Changes in light spectra modify secondary compound concentrations and BVOC emissions of Norway spruce seedlings
Kivimäenpää, Minna; Virjamo, Virpi; Ghimire, Rajendra P.; Holopainen, Jarmo K.; Julkunen-Tiitto, Riitta; Martz, Françoise; Nissinen, Katri; Riikonen, Johanna. 2021. Canadian journal of forest research-revue canadienne de recherche forestiere
Protein and phenolic content and antioxidant capacity of honey bee-collected unifloral pollen pellets from Finland
Salonen, Anneli; Lavola, Anu; Virjamo, Virpi; Julkunen-Tiitto, Riitta. 2021. Journal of apicultural research
1,6-Dehydropinidine Is an Abundant Compound in Picea abies (Pinaceae) Sprouts and 1,6-Dehydropinidine Fraction Shows Antibacterial Activity against Streptococcus equi Subsp. equi
Virjamo, Virpi; Fyhrquist, Pia; Koskinen, Akseli; Lavola, Anu; Nissinen, Katri; Julkunen-Tiitto, Riitta. 2020. Molecules
Characterization of spruce log soaking water and their antifungal and wood preserving properties
Barbero-López, Aitor; Vek, Viljem; Virjamo, Virpi; Poljan¨ek, Ida; Humar, Miha; Oven, Primo¸; Haapala, Antti. 2020. Society of Wood Science and Technology
Genetic modification of the flavonoid pathway alters growth and reveals flexible responses to enhanced UVB - Role of foliar condensed tannins
Thitz, Paula; Hagerman, Ann E; Randriamanana, Tendry R; Virjamo, Virpi; Kosonen, Minna; Lännenpää, Mika; Nyman, Tommi; Mehtätalo, Lauri; Kontunen-Soppela, Sari; Julkunen-Tiitto, Riitta. 2020. Plant-environment interactions
Growth Responses of Boreal Scots Pine, Norway Spruce and Silver Birch Seedlings to Simulated Climate Warming over Three Growing Seasons in a Controlled Field Experiment
Nissinen, Katri; Virjamo, Virpi; Kilpeläinen, Antti; lkonen, Veli-Pekka; Pikkarainen, Laura; Ärväs, lida-Liina; Kirsikka-aho, Sara; Peltonen, Anna; Sobuj, Norul; Sivadasan, Unnikrishnan; Zhou, Xiao; Ge, Zhen-Ming; Salminen, Timo; Julkunen-Tiitto, Riitta; Peltola, Heli. 2020. Forests
Revalorization of coffee silverskin as a potential feedstock for antifungal chemicals in wood preservation
Barbero-López, Aitor; Monzó-Beltrán, Juanjo; Virjamo, Virpi; Akkanen, Jarkko; Haapala, Antti. 2020. International biodeterioration and biodegradation
Responses in growth and phenolics accumulation to lateral bud removal in male and female saplings of Populus tremula (L.) under simulated climate change
Sobuj, N; Virjamo, V; Nissinen, K; Sivadasan, U; Mehtätalo, L; Nybakken, L; Peltola, H; Julkunen-Tiitto, R. 2019. Science of the total environment
A Seven-Year Study of Phenolic Concentrations of the Dioecious Salix myrsinifolia
Nissinen, Katri; Virjamo, Virpi; Mehtätalo, Lauri; Lavola, Anu; Valtonen, Anu; Nybakken, Line; Julkunen-Tiitto, Riitta. 2018. Journal of chemical ecology
Climate Change Effects on Secondary Compounds of Forest Trees in the Northern Hemisphere
Holopainen, Jarmo K; Virjamo, Virpi; Ghimire, Rajendra P; Blande, James D; Julkunen-Tiitto, Riitta; Kivimäenpää, Minna. 2018. Frontiers in plant science
Dry-air drying at room temperature - a practical pre-treatment method of tree leaves for quantitative analyses of phenolics?
Tegelberg, Riitta; Virjamo, Virpi; Julkunen-Tiitto, Riitta. 2018. Phytochemical analysis
Effects of soil pyrene contamination on growth and phenolics in Norway spruce (Picea abies) are modified by elevated temperature and CO2
Zhang, Y; Virjamo, V; Du, W; Yin, Y; Nissinen, K; Nybakken, L; Guo, H; Julkunen-Tiitto, R. 2018. Environmental science and pollution research
Elevated temperature and CO2 affect responses of European aspen (Populus tremula) to soil pyrene contamination
Zhang, Y; Virjamo, V; Sobuj, N; Du, W; Yin, Y; Nybakken, L; Guo, H; Julkunen-Tiitto, R. 2018. Science of the total environment
Quality and quantity of piperidine alkaloids in needles and bark of Scots pine (Pinus sylvestris) seedlings
Virjamo, Virpi; Julkunen-Tiitto, Riitta. 2018. Phytochemistry letters
Sex-related responses of European aspen (Populus tremula L.) to combined stress: TiO2 nanoparticles, elevated temperature and CO2 concentration
Zhang, Y; Virjamo, V; Sobuj, N; Du, W; Yin, Y; Nybakken, L; Guo, H; Julkunen-Tiitto, R. 2018. Journal of hazardous materials
Effect of climate change on bud phenology of young aspen plants (Populus tremula. L)
Sivadasan Unni, Randriamanana Tendry, Chenhao Cao, Virjamo Virpi, Nybakken Line, Julkunen-Tiitto Riitta. 2017. Ecology and evolution
Epidihydropinidine, the main piperidine alkaloid compound of Norway spruce (Picea abies) shows promising antibacterial and anti-Candida activity
Fyhrquist P, Virjamo V, Hiltunen E, Julkunen-Tiitto R. 2017. Fitoterapia
Impacts of elevated temperature and CO2 concentration on growth and phenolics in the sexually dimorphic Populus tremula (L.)
Sobuj Norul, Virjamo Virpi, Zhang Yaodan, Nybakken Line, Julkunen-Tiitto Riitta. 2017. Environmental and experimental botany
Phytochemical variation in the plant-part specific phenols of wild crowberry (Empetrum hermaphroditum Hagerup) populations
Lavola Anu, Salonen Anneli, Virjamo Virpi, Julkunen-Tiitto Riitta. 2017. Phytochemistry letters
Production of glandular trichomes responds to water stress and temperature in silver birch (Betula pendula) leaves
Thitz P, Possen BJHM, Oksanen E, Mehtätalo L, Virjamo V, Vapaavuori E. 2017. Canadian journal of forest research-revue canadienne de recherche forestiere
Responses of growth and leaf phenolics in European aspen (Populus tremula) to climate change during juvenile phase change
Nissinen Katri, Virjamo Virpi, Randriamanana Tendry, Sobuj Norul, Sivadasan Unnikrishnan, Mehtatalo Lauri, Beuker Egbert, Julkunen-Tiitto Riitta, Nybakken Line. 2017. Canadian journal of forest research-revue canadienne de recherche forestiere
Screening bioactivity and bioactive constituents of Nordic unifloral honeys
Salonen Anneli, Virjamo Virpi, Tammela Päivi, Fauch Laure, Julkunen-Tiitto Riitta. 2017. Food chemistry
Slow-growing Salix repens (Salicaceae) benefits from changing climate
Nissinen Katri, Nybakken Line, Virjamo Virpi, Julkunen-Tiitto Riitta. 2016. Environmental and Experimental Botany
Variation in piperidine alkaloid chemistry of Norway spruce (Picea abies) foliage in diverse geographic origins grown at the same area
Virjamo Virpi, Julkunen-Tiitto Riitta. 2016. Canadian journal of forest research-revue canadienne de recherche forestiere
Boreal woody species resistance affected by climate change
Julkunen-Tiitto R, Nybakken L, Randriamanana T, Virjamo V. 2015. CABI
Combined effect of elevated UVB, elevated temperature and fertilization on growth, needle structure and phytochemistry of young Norway spruce (Picea abies) seedlings
Virjamo Virpi, Sutinen Sirkka, Julkunen-Tiitto Riitta. 2014. Global change biology
Differences in vole preference, secondary chemistry and nutrient levels between naturally regenerated and planted Norway spruce seedlings
Virjamo V, Julkunen-Tiitto R, Henttonen H, Hiltunen E, Karjalainen R, Korhonen J, Huitu O. 2013. Journal of chemical ecology
Shoot development of Norway spruce (Picea abies) involves changes in piperidine alkaloids and condensed tannins
Virjamo V, Julkunen-Tiitto R. 2013. Trees-structure and function
Effects of deficiency and overdose of group 2 sigma factors in triple inactivation strains of Synechocystis sp. strain PCC 6803
Pollari M, Rantamäki S, Huokko T, Kårlund-Marttila A, Virjamo V, Tyystjärvi E, Tyystjärvi T. 2011. Journal of bacteriology

Tarkenna hakuasi

Tutkimusryhmät

Projektit

Avainsanat

Responses of needle terpene concentrations and characteristics of resin canals to different warming treatments in Scots pine and Norway spruce seedlings grown in a field experiment

Characterisation, Recovery and Activity of Hydrophobic Compounds in Norway Spruce Log Soaking Pit Water: Could they be Used in Wood Preservative Formulations?

Responses in growth and emissions of biogenic volatile organic compounds in Scots pine, Norway spruce and silver birch seedlings to different warming treatments in a controlled field experiment

Accumulation of phenolics and growth of dioecious Populus tremula (L.) seedlings over three growing seasons under elevated temperature and UVB radiation

Changes in light spectra modify secondary compound concentrations and BVOC emissions of Norway spruce seedlings

Protein and phenolic content and antioxidant capacity of honey bee-collected unifloral pollen pellets from Finland

1,6-Dehydropinidine Is an Abundant Compound in Picea abies (Pinaceae) Sprouts and 1,6-Dehydropinidine Fraction Shows Antibacterial Activity against Streptococcus equi Subsp. equi

Characterization of spruce log soaking water and their antifungal and wood preserving properties

Genetic modification of the flavonoid pathway alters growth and reveals flexible responses to enhanced UVB - Role of foliar condensed tannins

Growth Responses of Boreal Scots Pine, Norway Spruce and Silver Birch Seedlings to Simulated Climate Warming over Three Growing Seasons in a Controlled Field Experiment

Revalorization of coffee silverskin as a potential feedstock for antifungal chemicals in wood preservation

Responses in growth and phenolics accumulation to lateral bud removal in male and female saplings of Populus tremula (L.) under simulated climate change

A Seven-Year Study of Phenolic Concentrations of the Dioecious Salix myrsinifolia

Climate Change Effects on Secondary Compounds of Forest Trees in the Northern Hemisphere

Dry-air drying at room temperature - a practical pre-treatment method of tree leaves for quantitative analyses of phenolics?

Effects of soil pyrene contamination on growth and phenolics in Norway spruce (Picea abies) are modified by elevated temperature and CO2

Elevated temperature and CO2 affect responses of European aspen (Populus tremula) to soil pyrene contamination

Quality and quantity of piperidine alkaloids in needles and bark of Scots pine (Pinus sylvestris) seedlings

Sex-related responses of European aspen (Populus tremula L.) to combined stress: TiO2 nanoparticles, elevated temperature and CO2 concentration

Effect of climate change on bud phenology of young aspen plants (Populus tremula. L)

Epidihydropinidine, the main piperidine alkaloid compound of Norway spruce (Picea abies) shows promising antibacterial and anti-Candida activity

Impacts of elevated temperature and CO2 concentration on growth and phenolics in the sexually dimorphic Populus tremula (L.)

Phytochemical variation in the plant-part specific phenols of wild crowberry (Empetrum hermaphroditum Hagerup) populations

Production of glandular trichomes responds to water stress and temperature in silver birch (Betula pendula) leaves

Responses of growth and leaf phenolics in European aspen (Populus tremula) to climate change during juvenile phase change

Screening bioactivity and bioactive constituents of Nordic unifloral honeys

Slow-growing Salix repens (Salicaceae) benefits from changing climate

Variation in piperidine alkaloid chemistry of Norway spruce (Picea abies) foliage in diverse geographic origins grown at the same area

Boreal woody species resistance affected by climate change

Combined effect of elevated UVB, elevated temperature and fertilization on growth, needle structure and phytochemistry of young Norway spruce (Picea abies) seedlings

Differences in vole preference, secondary chemistry and nutrient levels between naturally regenerated and planted Norway spruce seedlings

Shoot development of Norway spruce (Picea abies) involves changes in piperidine alkaloids and condensed tannins

Effects of deficiency and overdose of group 2 sigma factors in triple inactivation strains of Synechocystis sp. strain PCC 6803