Aud Else Berglen Eriksen

Artikler i internasjonale tidsskrift (2005-2010):

Berg,T.C., Gundersen, L.L., Eriksen, A.B., Malterud, K.E. 2005. Synthesis of optically active 6-alkynyl- and 6-alkylpurines as cytokinin analogs and inhibitors of 15-lipoxygenase; Studies of intramolecular cyclization of 6-(hydroxyalkyn-1-yl) purines. European Journal of Organic Chemistry: 4988-4994

Bråthe, A., Gundersen, L.L., Rise, F., Eriksen, A.B. 2005. 6-Cyclopropylpurines as Novel Potent Analogs of Cytokinins. Journal of plant growth regulation; 24:41-45

Stave, Jørn; Oba, G; Eriksen, A.B., Nordal, I., Stenseth, N. C. 2005; Seedling growth of Acacia tortilis and Faidherbia albida in response to simulated groundwater tables. Forest Ecology and Management: 212:367-375.

Pleijel, H., Eriksen, A.B., Danielsson, H., Bondesson, N., Sellden, G.. 2006. Differential ozone sensitivity in an old and a modern Swedish wheat cultivar - grain yield and quality, leaf chlorophyll and stomatal conductance. Environmental and Experimental Botany; 56(1):63-71. 

Aarnes, H., Eriksen, A.B., Petersen, D., Rise, F. 2007. Accumulation of ammonium in Norway spruce (Picea abies) seedlings measured by in vivo 14N-NMR. Journal of Experimental Botany, 58(5):929-934.

Vollsnes, A., Eriksen, A.B., Otterholt, E., Kvaal, K., Oxaal, U., Futsaether, C. 2009. Visible foliar injury and infrared imaging show that daylength affects short-term recovery after ozone stress in Trifolium subterraneum. Journal of Experimental Botany. 60 (13): 3677-3686.

Futsaether, CM; Vollsnes, A; Kruse, OMO; Otterholt, E; Kvaal, K; Eriksen, AB. 2009. Effects of the Nordic photoperiod on ozone sensitivity and repair in different clover ecotypes studied using infrared imaging. Ambio. 38(8): 437-442.

Vollsnes, A; Kruse, OMO; Eriksen, AB; Oxaal, U., Futsaether, C. 2010. In vivo root growth dynamics of ozone exposed Trifolium subterraneum. Journal of Environmental and Experimental Botany. 69: 183-188.

• Falk, Stefanie; Vollsnes, Ane V.; Eriksen, Aud Else Berglen; Stordal, Frode & Berntsen, Terje Koren (2021). Technical note: Quality assessment of ozone reanalysis products and gap-filling over subarctic Europe for vegetation risk mapping. Atmospheric Chemistry and Physics (ACP). ISSN 1680-7316. 21(20), s. 15647–15661. doi: 10.5194/acp-21-15647-2021. Fulltekst i vitenarkiv
• Mwafongo, Elizabeth Brighton Mvula; Vollsnes, Ane Victoria; Bjorå, Charlotte Sletten; Nordal, Inger & Eriksen, Aud Else Berglen (2017). Leaf mottling/variegation and shape in the Ledebouria revoluta complex ? Development, stability and putative function. Flora: Morphologie, Geobotanik, Oekophysiologie. ISSN 0367-2530. 236-237, s. 33–43. doi: 10.1016/j.flora.2017.09.009. Fulltekst i vitenarkiv Vis sammendrag

  The aims of this paper are three-fold: 1. To analyse the development and stability in vegetative traits such as leaf shape, growth and pigmentation patterns in three different morphotypes (defined by leaf shape and pigmentation) of the Ledebouria revoluta complex. 2. To discuss the putative function of leaf mottling/variegation. 3. To discuss plasticity in these traits in relation to taxonomy and species delimitation within the complex. Clones were analysed in a cultivation experiment with two nitrogen levels (N1 and N2), three morphotypes (A, B & C) and two light levels (L1 and L2). Anthocyanins were found in hypodermal cells, particularly in the proximal (i.e. young) parts of the leaf. The red pigmentation faded out in distal (i.e. more mature) parts of the leaf. Furthermore, older, outer leaves had more pigmentation than younger, inner leaves. Increased nitrogen availability had no effect on leaf pigmentation. Some plants developed significantly more red pigmentation adaxially at high light intensities, whereas abaxial pigmentation was unaffected by light intensity. The pigmentation of the two sides of a leaf therefore seems to be regulated independently and may accordingly serve different functions for the plants. Adaxial pigmentation (mainly in the form of mottling, pigmentation mainly in spots) may serve as photoprotection, whereas abaxial pigmentation (mainly in the form of variegation, pigmentation mainly in bands) may possibly be aposematic. In the field a high degree of intrapopulational variation in pigmentation patterns was observed. This might be due to local habitat heterogeneity and gene flow or frequency dependent selection. Characters relevant to taxonomy (leaf shape, pigmentation pattern) only changed to a limited extent, suggesting that the vegetative traits are genetically based. The three different morphotypes were easily recognized unrelated to the different treatments. Whether a formal taxonomic status is justified for the different morphotypes will need more plant material and genetic data and cannot be decided based on this study.

• Futsæther, Cecilia Marie; Vollsnes, Ane Victoria; Kruse, Ole Mathis Opstad; Indahl, Ulf Geir; Kvaal, Knut & Eriksen, Aud Else Berglen (2015). Daylength influences the response of three clover species (Trifolium spp.) to short-term ozone stress. Boreal Environment Research. ISSN 1239-6095. 20(1), s. 90–104. Fulltekst i vitenarkiv Vis sammendrag

  Long photoperiods characteristic of summers at high latitudes can increase ozone-induced foliar injury in subterranean clover (Trifolium subterraneum) This study compared the effects of long photoperiods on ozone injury in red and white clover cultivars adapted to shorter or longer daylengths of southern or northern Fennoscandia. Plants were exposed to 70 ppb ozone for six hours during the daytime for three consecutive days. Simultaneously, the daylength in the growth rooms was altered to long-day (10 h light; 14 h dim light) and short-day (10 h light; 14 h darkness) conditions. Thermal imaging showed that ozone disrupted leaf temperature and stomatal function, particularly in sensitive species, in which leaf temperature deviations persisted for several days after ozone exposure. Longday conditions increased visible foliar injury (30%–70%), characterized by chlorotic and necrotic areas, relative to short day conditions in all species and cultivars independently of the photoperiod in the region they were adapted to.

• Eriksen, Aud Else Berglen; Vollsnes, Ane Victoria; Futsæther, Cecilia Marie & Kruse, Ole Mathis Opstad (2012). Reversible phytochrome regulation influenced the severity of ozone-induced visible foliar injuries in Trifolium subterraneum L. Plant growth regulation (Print). ISSN 0167-6903. 68(3), s. 517–523. doi: 10.1007/s10725-012-9729-8. Fulltekst i vitenarkiv
• Vollsnes, Ane Victoria; Kruse, Ole Mathis Opstad; Eriksen, Aud Else Berglen; Oxaal, Unni & Futsæther, Cecilia (2010). In vivo root growth dynamics of ozone exposed Trifolium subterraneum. Environmental and Experimental Botany. ISSN 0098-8472. 69(2), s. 183–188. doi: 10.1016/j.envexpbot.2010.03.007. Fulltekst i vitenarkiv Vis sammendrag

  Although leaves are the primary sites of tropospheric ozone exposure, it has been postulated that ozone may cause greater and earlier disruption of below-ground growth with long-term consequences for productivity. As plant roots are hidden in soil, the time-course of ozone-induced below-ground changes remains poorly characterised. In this study, the in vivo root development before, during and after short-term ozone exposure of individual subterranean clover seedling shoots (Trifolium subterraneum L.) was studied non-destructively using a new experimental growth and exposure system. Plants were grown individually in thin root growth chambers, where the entire root system could be observed non-invasively for weeks. Seedlings were exposed individually in separate exposure cuvettes to either charcoal filtered air (n=3, similar to 1-3 ppb ozone) or charcoal filtered air supplemented with ozone giving a concentration of 75 10 ppb ozone (n=3) for 8 h during daytime for five consecutive days (AOT40 index 1400 ppb h) starting eleven days after sowing. 171 High-resolution digital images of the roots were captured every one-four days and were analysed to determine root length and root tip formation. Altered root growth occurred within the first week after exposure and persisted for three weeks. Root tip formation and elongation rates were reduced by 35-40%. Doubling of the number of root tips was delayed by one week. Roots of exposed plants were therefore shorter and less branched. Above-ground changes were apparent about one week after below-ground changes. The leaf development rate was reduced by about 25%, but the number of flower stems at harvest was unaffected. Ratios between below and above-ground growth were significantly reduced by similar to 60% the first week after exposure and remained lower for up to three weeks suggesting reduced carbon allocation to root growth. Nevertheless, biomass and biomass ratios at harvest five weeks after exposure were not significantly altered, indicating that traditional destructive sampling once, at harvest, would not have revealed any of the early below-ground changes observed in this study. Thus, ozone caused substantial changes to root architecture that may ultimately affect the root's function and thereby the plant's overall health and ability to cope with stress. (C) 2010 Elsevier By. All rights reserved.

• Futsaether, Cecilia; Vollsnes, Ane; Kruse, Ole Mathis Opstad; Otterholt, Eli; Kvaal, Knut & Eriksen, Aud Else Berglen (2009). Effects of the Nordic Photoperiod on Ozone Sensitivity and Repair in Different Clover Species Studied Using Infrared Imaging. Ambio. ISSN 0044-7447. 38(8), s. 437–442. doi: 10.1579/0044-7447-38.8.437. Fulltekst i vitenarkiv
• Vollsnes, Ane; Eriksen, Aud Else Berglen; Otterholt, Eli; Kvaal, Knut; Oxaal, Unni & Futsaether, Cecilia (2009). Visible foliar injury and infrared imaging show that daylength affects short-term recovery after ozone stress in Trifolium subterraneum. Journal of Experimental Botany. ISSN 0022-0957. 60(13), s. 3677–3686. doi: 10.1093/jxb/erp213. Fulltekst i vitenarkiv
• Aarnes, Halvor; Eriksen, Aud Else Berglen; Petersen, Dirk & Rise, Frode (2007). Accumulation of ammonium in Norway spruce (Picea abies) seedlings measured by in vivo 14N-NMR. Journal of Experimental Botany. ISSN 0022-0957. 58(5), s. 929–934. doi: 10.1093/jxb/erl247. Fulltekst i vitenarkiv Vis sammendrag

  http://jxb.oxfordjournals.org/cgi/content/abstract/erl247? ijkey=y8vx24OpXL2qpyu&keytype=ref 14N-NMR and 31P-NMR have been used to monitor the in vivo pH in roots, stems, and needles from seedlings of Norway spruce, a typical ammonium-tolerant plant. The vacuolar and cytoplasmic pH measured by 31P-NMR was found to be c. pH 4.8 and 7.0, respectively, with no significant difference between plants growing with ammonium or nitrate as the N-source. The 1H-coupled 14NH resonance is pH-sensitive: at alkaline pH it is a narrow singlet line and below pH 4 it is an increasing multiplet line with five signals. The pH values in ammonium-containing compartments measured by 14N-NMR ranged from 3.7 to 3.9, notably lower than the estimated pH values of the Pi pools. This suggests that, in seedlings of Norway spruce, ammonium is stored in vacuoles with low pH possibly to protect the seedlings against the toxic effects of ammonium (NH) or ammonia (NH3). It was also found that concentrations of malate were 3–6 times higher in stems than in roots and needles, with nitrate-grown plants containing more malate than plants grown with ammonium. Key words: Ammonium, cytoplasmic pH, in vivo 14N-NMR, in vivo 31P-NMR, malate, organic acids, Picea abies (L.) Karst, vacuolar pH

• Pleijel, Håkan; Eriksen, Aud Else Berglen; Danielsson, Helene; Bondesson, N & Sellden, Gun (2006). Differential ozone sensitivity in an old and a modem Swedish wheat cultivar - grain yield and quality, leaf chlorophyll and stomatal conductance. Environmental and Experimental Botany. ISSN 0098-8472. 56(1), s. 63–71. doi: 10.1016/j.envexpbot.2005.01.00. Fulltekst i vitenarkiv
• Stave, Jørn; Oba, Gufu; Eriksen, Aud Berglen; Nordal, Inger & Stenseth, Nils Christian (2005). Seedling growth of Acacia tortilis and Faidherbia albida in response to simulated groundwater tables. Forest Ecology and Management. ISSN 0378-1127. 212(01.mar), s. 367–375. Fulltekst i vitenarkiv Vis sammendrag

  The growth and survival of woody seedlings in arid and semi-arid riverine forests is partly determined by the ability of their roots to maintain contact with the alluvial water table. After a flood event, the water table declines in conjunction with the river stage and the rate of decline may have species-specific effects on the regeneration of riverine trees. In this study, a growth experiment involving seedlings of Acacia tortilis and Faidherbia albida, two keystone tree species along the regulated Turkwel River in northern Kenya, was conducted to assess the effects of simulated pre- and post-dam water table dynamics. Seedlings were grown in rhizopods with constantly shallow water tables (0 cm day 1 treatment), slow rates of water table decline (5 cm day 1 treatment), rapid rates of water table decline (10 cm day 1 treatment) and no subsurface water (rainfall treatment). The last treatment corresponded to the dam-induced paucity of floodplain inundation but allowed early seedling growth in response to rainfall. Results showed that F. albida attained larger shoot growth but shorter root lengths than A. tortilis, while water table decline promoted root elongation in both species. However, F. albida seedlings were adversely affected by moisture deficits under the rapid rate of water table decline and rainfall treatments. In contrast, the growth of A. tortilis seedlings was sustained under all treatments, suggesting that A. tortilis is a drought tolerant facultative phreatophyte, while F. albida behaves more like a near obligate phreatophyte. For F. albida, the ideal stage recession rate following a flood event is 5 cm day 1 or less, which is also favourable for A. tortilis. Although more research is still needed on the hydrological preferences of woody seedlings in the Turkwel River floodplain, it is evident that the regeneration of strictly riverine trees such as F. albida depends on slow rates of water table decline in the post-flood period.

• Berg, Tom Christian; Gundersen, Lise-Lotte; Eriksen, Aud Else Berglen & Malterud, Karl Egil (2005). Synthesis of optically active 6-alkynyl- and 6-alkylpurines as cytokinin analogs and inhibitors of 15-lipoxygenase; Studies of intramolecular cyclization of 6-(hydroxyalkyn-1-yl)purines. European Journal of Organic Chemistry. ISSN 1434-193X. s. 4988–4994. Fulltekst i vitenarkiv
• Stave, Jørn; Oba, G; Eriksen, Aud Else Berglen; Nordal, Inger & Stenseth, Nils Christian (2005). Seedling growth of Acacia tortilis and Faidherbia albida in response to simulated groundwater tables. Forest Ecology and Management. ISSN 0378-1127. 212, s. 367–375. Fulltekst i vitenarkiv
• Bråthe, Anders; Gundersen, Lise-Lotte; Rise, Frode & Eriksen, Aud Else Berglen (2005). 6-Cyclopropylpurines as Novel Potent Analogs of Cytokinins. Journal of Plant Growth Regulation. ISSN 0721-7595. 24, s. 41–45. Fulltekst i vitenarkiv
• Andresen, Geir; Eriksen, Aud Else Berglen; Dalhus, Bjørn; Gundersen, Lise-Lotte & Rise, Frode (2001). Synthesis of 6-substituted purin-2-ones with potential cytokinin activity. Journal of the Chemical Society. Perkin transactions 1. ISSN 0300-922X. s. 1662–1672. Fulltekst i vitenarkiv Vis sammendrag

  http://folk.uio.no/froderi/GeirAndresen3.pdf

• Bråthe, Anders; Gundersen, Lise-Lotte; Rise, Frode; Eriksen, Aud Else Berglen; Vollsnes, Ane & Wang, Linnea (1999). Synthesis of 6-Alkenyl- and 6-Alkynylpurines with Cytokinin Activity. Tetrahedron. ISSN 0040-4020. 55, s. 211–288. Fulltekst i vitenarkiv
• Nordal, Inger; Haraldsen, Kirsten Borse; Ergon, Åshild & Eriksen, Aud Else Berglen (1999). Copper resistance and genetic diversity in Lychnis alpina (Caryophyllaceae) populations. Folia Geobotanica. ISSN 1211-9520. 34, s. 471–481. Fulltekst i vitenarkiv Vis sammendrag

  Copper mine populations of Lychnis alpina are shown to be significantly more resistant to increased copper concentrations compared to populations on normal soils. Data obtained from isozyme polymorphism analysis revealed that although the copper populations display considerable variation, they have lower genetic variability than the populations from normal soils, both on a local and a global scale, thus indicating a slight founder effect. Copper ecotypes in L. alpina have originated independently. The results are similar to what recently have been reported in heavy metal tolerant populations of Armeria maritima.

• Nordal, Inger; Eriksen, Aud Else Berglen; Laane, Carl Morten Motzfeldt & Solberg, Y (1986). Biogeographic and biosystematic studies in the genus Cochlearia in northern Scandinavia. Acta Universitatis Upsaliensis Symbolae Botanicae Upsalienses. ISSN 0372-4654. XXVII(2). Fulltekst i vitenarkiv Vis sammendrag

  In Northern Scandinavia (excluding Bear Island and Spitsbergen) the genus Cochlearia is only represented by forms with 2n=24 and a variable number of B-chromosomes. This means that only one species is present, C.officinalis L. sensu stricto. Ecotypical differentiation has taken place within this species. The glucosinate content indicates that the bird cliff and fountain ecotypes have independent migration history after the last glaciation compared to the beach and estuary ecotypes.

Se alle arbeider i NVA

• Vollsnes, Ane Victoria; Eriksen, Aud Else Berglen & Fløistad, Inger (2022). Rotvekst om høsten. Skog. ISSN 1892-9990. s. 56–57. Fulltekst i vitenarkiv
• Vollsnes, Ane Victoria; Falk, Stefanie; Eriksen, Aud Else Berglen; Stordal, Frode; Kauserud, Håvard & Berntsen, Terje Koren (2021). Luftforurensning og klimaendringer gir dobbelt stress for vegetasjonen. Naturen. ISSN 0028-0887. 5, s. 265–271. doi: 10.18261/issn.1504-3118-2021-05-10. Fulltekst i vitenarkiv
• Falk, Stefanie; Lombardozzi, Danica; Vollsnes, Ane Victoria; Stordal, Frode; Berntsen, Terje Koren & Eriksen, Aud Else Berglen (2021). OzoneLUNA: Ozone damage in CLM revisited. Fulltekst i vitenarkiv
• Falk, Stefanie; Vollsnes, Ane Victoria; Stordal, Frode; Eriksen, Aud Else Berglen & Berntsen, Terje Koren (2020). Surface Ozone in Northern Scandinavia and Implications on Local Vegetation - A Case Study. Fulltekst i vitenarkiv Vis sammendrag

  The Arctic biosphere is subject to comprehensive changes induced by climate change. The highly specialized subartic vegetation will be challenged by both, changing environmental conditions as well as further interference through human activity. Permission of exploitation of natural resources in the Artic is likely to increase the levels of air pollutants which are precursors to ozone. n the course of our project (OzoNorClim: The Double Punch), we had an ozone monitor installed at the Norwegian Institute for Bioeconomic Research (NIBIO) Svanhovd Research Station operated by the Norwegian Institute for Air Research (NILU). In 2018, a long-lasting heatwave accompanied by extensive forest fires across Europe and Scandinavia enhanced surface ozone concentrations by about 2 ppt above the climatological mean in Northern Scandinavia. Ozone sensitive glover species in the ozone garden at Svanhovd showed clear signs of ozone damage in 2018 but not in 2019. We study these two years as example for probable future scenarios in which both heat stress and ozone stress affect vegetation negatively. We look at the corresponding surface ozone concentrations, accumulated ozone dose, and implications on natural and semi-natural vegetation especially in the Pasvik valley in Northern Norway, put these in a larger regional context, and give an outlook on further modelling work.

• Vollsnes, Ane Victoria; Falk, Stefanie; Eriksen, Aud Else Berglen; Stordal, Frode; Kauserud, Håvard & Berntsen, Terje Koren [Vis alle 9 forfattere av denne artikkelen] (2020). The double punch: ozone and climate stresses on vegetation. Fulltekst i vitenarkiv
• Vollsnes, Ane Victoria & Eriksen, Aud Else Berglen (2019). Work done in the ozone project in Oslo. Emphasis on the biology part. Fulltekst i vitenarkiv
• Vollsnes, Ane Victoria & Eriksen, Aud Else Berglen (2019). Gas exchange in some widespread sub-arctic plants. Fulltekst i vitenarkiv
• Vollsnes, Ane Victoria & Eriksen, Aud Else Berglen (2017). Reforestation without insecticides. Protecting spruce seedlings against pine weevils on a clear-felling. Fulltekst i vitenarkiv
• Vollsnes, Ane Victoria & Eriksen, Aud Else Berglen (2017). Granplanting på hogstfelt uten insektsgift. Fulltekst i vitenarkiv
• Vollsnes, Ane Victoria & Eriksen, Aud Else Berglen (2017). Heat stress tolerance limit in Norway spruce (Picea abies) seedlings. Fulltekst i vitenarkiv
• Vollsnes, Ane Victoria & Eriksen, Aud Else Berglen (2017). Heat stress tolerance limit in Norway spruce (Picea abies) seedlings. Fulltekst i vitenarkiv
• Vollsnes, Ane Victoria & Eriksen, Aud Else Berglen (2017). Hvorfor vokse planter? Fulltekst i vitenarkiv
• Elizabeth, Mwafongo; Vollsnes, Ane Victoria; Sletten, Bjorå Charlotte; Inger, Nordal & Eriksen, Aud Else Berglen (2017). Anthocyaniner, pigmenter med mange roller. Fulltekst i vitenarkiv
• Jeanette, Viken; Vollsnes, Ane Victoria; Eriksen, Aud Else Berglen; Berntsen, Terje Koren & Stordal, Frode (2017). DO3SEiNORD. Fulltekst i vitenarkiv
• Vollsnes, Ane Victoria; Eriksen, Aud Else Berglen; Håvard, Kauserud; Terje, Berntsen & Frode, Stordal (2017). Prosjekt som starter i 2017. The double punch: ozone and climate stresses on vegetation. Fulltekst i vitenarkiv
• Vollsnes, Ane Victoria; Eriksen, Aud Else Berglen; Fløistad, Inger & Skjølaas, Dag (2016). Gransnutebillen møter motstand i Norge. Skog. ISSN 1892-9990. s. 12–13. Fulltekst i vitenarkiv
• Vollsnes, Ane Victoria & Eriksen, Aud Else Berglen (2014). Stress responses of clovers are affected by ploidy level and daylength at northern latitudes. Fulltekst i vitenarkiv
• Vollsnes, Ane Victoria & Eriksen, Aud Else Berglen (2014). WeevilSTOP-prosjektet. Fulltekst i vitenarkiv
• Eriksen, Aud Else Berglen & Vollsnes, Ane Victoria (2014). Miljøvennlig beskyttelse av gran-planter mot snutebilleangrep. Fulltekst i vitenarkiv
• Vollsnes, Ane Victoria; Eriksen, Aud Else Berglen & Melø, Thor Bernt (2014). Needle light absorption and chlorophyll fluorescence in Norway spruce saplings protected against pine weevil feeding. Fulltekst i vitenarkiv
• Mwafongo, Elizabeth; Eriksen, Aud Else Berglen; Vollsnes, Ane Victoria; Bjorå, Charlotte Sletten & Nordal, Inger (2014). Leaf mottling in Ledebouria (Hyacinthaceae) – development, stability and putative function. Fulltekst i vitenarkiv
• Eriksen, Aud Else Berglen (2014). Voks som beskyttelse mot gransnutebiller. Kort rapport om resultater fra EU-prosjektet WeevilSTOP. Fulltekst i vitenarkiv
• Vollsnes, Ane Victoria; Eriksen, Aud Else Berglen & Melø, Thor Bernt (2014). Heat stressed Norway spruce saplings: needle light absorption, reflection and chlorophyll fluorescence. Fulltekst i vitenarkiv
• Eriksen, Aud Else Berglen & Vollsnes, Ane Victoria (2013). A comparative anatomical study in a diploid and tetraploid red clover (Trifolium pratense L.). Fulltekst i vitenarkiv
• Vollsnes, Ane Victoria & Eriksen, Aud Else Berglen (2013). The effect of application of warm wax on lower stem of Norway spruce seedlings; needle and bark chlorophyll. Fulltekst i vitenarkiv
• Futsæther, Cecilia Marie; Kruse, Ole Mathis Opstad; Vollsnes, Ane Victoria & Eriksen, Aud Else Berglen (2013). Større ozonskader i lyse sommernetter. [Internet]. forskning.no. Fulltekst i vitenarkiv
• Jemterud, Torkild & Eriksen, Aud Else Berglen (2013). Ekko - et aktuelt samfunnsprogram 24. sept 2013 Hvete - forskning og politikk. [Radio]. NRK P2. Fulltekst i vitenarkiv
• Eriksen, Aud Else Berglen & Jemterud, Torkild (2013). Ekko - et akutelt samfunnsprogram 1. okt 2013 Fytotronen. [Radio]. NRK P2. Fulltekst i vitenarkiv
• Eriksen, Aud Else Berglen & Vollsnes, Ane Victoria (2013). Med voks mot snutebilla. Skog. ISSN 1892-9990. s. 24–25. Fulltekst i vitenarkiv
• Vollsnes, Ane Victoria & Eriksen, Aud Else Berglen (2012). Do the effects of climate change depend on plant ploidy level? Two cultivars of Trifolium pratense L. with different ploidy level responded differently to increasing ground level ozone and temperature. Fulltekst i vitenarkiv
• Vollsnes, Ane Victoria; Eriksen, Aud Else Berglen; Futsæther, Cecilia Marie & Kruse, Ole Mathis Opstad (2011). Night-time P(r):P(fr) ratio and daytime stomatal ozone uptake. Fulltekst i vitenarkiv
• Futsæther, Cecilia; Kruse, Ole Mathis Opstad; Kvaal, Knut; Vollsnes, Ane V. & Eriksen, Aud Berglen (2010). Plant responses to ozone stress under northern light conditions. Fulltekst i vitenarkiv Vis sammendrag

  Ground level ozone is a major air pollutant affecting plants worldwide by reducing crop productivity and the growth and diversity of natural vegetation. Ozone is taken up into the leaves causing oxidative tissue damage, premature leaf aging and visible lesions such as flecking, bronzing and necrotic spots (Krupa et al. 2001). Plants at northern latitudes often show more ozone injury than plants at lower latitudes, despite lower ambient ozone concentrations. It has been postulated that the summer nights at high latitudes are too short to allow sufficient recovery of ozone injury. Another hypothesis is that the dim light during northern summer nights interferes with repair of ozone damage (Vollsnes et al. 2009). Experiments were performed to identify which wavelength regions of light and hence photoreceptors were involved in altering ozone repair capacity. The results point to phytochrome which is involved in plant development, photomorphogenesis and photoperiodism. It appears that phytochrome mediated processes activated by light during nighttime impaired ozone repair. It was also investigated whether the increased ozone sensitivity during northern summer nights was dependent on latitude of origin of the species. Ozone sensitivity of northern species adapted to northern conditions should be unaffected by northern summer nights whereas more southern species should show increased sensitivity. This does not appear to be the case. Rather, the response is species dependent suggesting that constitutive defence prior to ozone exposure is important.

• Kruse, Ole Mathis Opstad; Futsaether, Cecilia; Vollsnes, Ane; Eriksen, Aud Else Berglen & Kvaal, Knut (2009). Detecting and quantifying ozone damage on leaves. Fulltekst i vitenarkiv
• Kruse, Ole Mathis Opstad; Futsæther, Cecilia; Landrø, Hilde; Vollsnes, Ane V.; Eriksen, Aud Berglen & Kvaal, Knut (2009). A method for visualising ozone damage on clover leaves. Fulltekst i vitenarkiv Vis sammendrag

  Ground level ozone is one of the most important air pollutants damaging plants worldwide. Ozone causes premature leaf aging, leaf visible lesions and necrotic spots and damages leaf temperature regulation. Infrared imaging was used to detect leaf temperature changes. Visible images were taken to capture leaf lesions and necrosis. Feature detectors were extracted from the images and analysed with multivariate statistics. All feature detectors were quite good at separating injured and healthy leaves.

• Kruse, Ole Mathis Opstad; Futsæther, Cecilia; Vollsnes, Ane V.; Eriksen, Aud Berglen & Kvaal, Knut (2009). Detecting and quantifying ozone damage on leaves. Fulltekst i vitenarkiv Vis sammendrag

  Ground level ozone is one of the most important air pollutants damaging plants worldwide. Ozone causes premature leaf aging, leaf visible lesions, necrotic spots and damages leaf temperature regulation. Determining if and how much of a leaf is damaged, is usually done by visual inspection which is time-consuming and observer dependent. The aim of this study was to evaluate methods for automated classification of leaves as healthy or damaged using different feature detectors and PLS Discriminant Analysis. Classification performance depended upon the choice of feature detector and image colour channel. The study shows that it should be possible to develop automated classification of healthy and damaged leaves.

• Eriksen, Aud Else Berglen (2009). Die Anwendung von Wachs und Auxin bei der Veredelung und Bewurzelung von Reben (Vitis vinifera). Fulltekst i vitenarkiv
• Kruse, Ole Mathis Opstad; Landrø, Hilde; Kvaal, Knut; Vollsnes, Ane; Eriksen, Aud Else Berglen & Futsaether, Cecilia (2009). A method for visualising ozone damage on clover leaves. Fulltekst i vitenarkiv
• Berg, Tom Christian; Gundersen, Lise-Lotte & Eriksen, Aud Else Berglen (2006). Synthesis of Optically Active 6-Alkynyl- and 6-Alkylpurines as Cytokinin Analogs. Fulltekst i vitenarkiv
• Otterholt, Eli; Vollsnes, Ane V.; Eriksen, Aud Berglen; Futsæther, Cecilia & Oxaal, Unni (2006). Ozone induced changes in root growth and leaf temperature in clover. Fulltekst i vitenarkiv
• Otterholt, Eli; Eriksen, Aud Berglen; Vollsnes, Ane V.; Futsæther, Cecilia & Oxaal, Unni (2006). Effects of ozone on root development and leaf temperature in subterranean clover. Fulltekst i vitenarkiv
• Vollsnes, Ane V.; Eriksen, Aud Berglen; Oxaal, Unni & Futsæther, Cecilia (2006). Does ozone affect the root growth of plants? Fulltekst i vitenarkiv
• Jerstad, Ane; Vollsnes, Ane V.; Futsæther, Cecilia; Oxaal, Unni & Eriksen, Aud Berglen (2004). Does ozone affect the Root growth of plants? Fulltekst i vitenarkiv
• Vollsnes, Ane V.; Jerstad, Ane; Futsæther, Cecilia; Oxaal, Unni; Melø, Thor Bernt & Eriksen, Aud Berglen (2004). Plant root morphology responses to ozone or illumination. Fulltekst i vitenarkiv
• Vollsnes, Ane; Jerstad, Ane; Futsaether, Cecilia; Oxaal, Unni & Eriksen, Aud Else Berglen (2004). Does ozone affect the root growth of plants. Fulltekst i vitenarkiv
• Vollsnes, Ane; Jerstad, Ane; Futsæther, C.; Oxaal, Unni & Eriksen, Aud Else Berglen (2004). Root growth dynamics in ozone treated plants of Trifolium subterraneum. Fulltekst i vitenarkiv
• Aarnes, Halvor; Eriksen, Aud Else Berglen; Petersen, Dirk & Rise, Frode (2004). In Vivo 14N-NMR and 31P-NMR: intracellular pH in Norway spruce (Picea abies) seedlings grown on ammonium or nitrate. Fulltekst i vitenarkiv
• Eriksen, Aud Else Berglen; Helmen, Stina; Husa, Stine; Høgåsen, Tore; Persson, Kristin & Sellden, Gun (2002). AOT 40 responses in relation to plant strategy. Fulltekst i vitenarkiv
• Sellden, Gun & Eriksen, Aud Else Berglen (2000). Ozone-induced oxidative stress in plants - plant response in relation to plant strategy. Fulltekst i vitenarkiv
• Bråthe, Anders; Gundersen, Lise-Lotte; Rise, Frode; Eriksen, Aud Else Berglen & Wang, Linnea (1998). Synthesis of Cytokinin Analogues. Fulltekst i vitenarkiv
• Karlsson, Per Erik; Pleijel, Håkan; Andersson, Camilla; Bergström, Robert; Engardt, Magnuz & Eriksen, Aud Else Berglen [Vis alle 13 forfattere av denne artikkelen] (2021). The vulnerability of northern European vegetation to ozone damage in a changing climate An assessment based on current knowledge. IVL Swedish Environmental Research Institute Ltd.. ISSN 9789178832705. Fulltekst i vitenarkiv

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