Semere T, Tsehaye Y, Tareke L, Westengen OT, Fjellheim S (2023) Nutritional and antinutritional potentials of sorghum: A comparative study among different sorghum landraces of Tigray, Northern Ethiopia. Agriculture 13 (9): 1753. doi:10.3390/agriculture13091753

Kinmonth-Schulz H, Sønstebø JH, Croneberger AJ, Johnsen SS, Leder E, Lewandowska-Sabat A, Imaizumi T, Rognli OA, Vinje H, Ward JK, Fjellheim S (2023) Responsiveness to long days for flowering is reduced in Arabidopsis by yearly variation in growing season temperatures. Plant, Cell & Environment 46. doi:10.1111/pce.14632

Semere T, Fjellheim S, Tsehaye Y, Westengen OT (2023) Inventory of on-farm sorghum landrace diversity and climate adaptation in Tigray, Northern Ethiopia: implications for sorghum breeding and conservation. Genetic Resources and Crop Evolution 70. doi:10.1007/s10722-023-01604-w

Paliocha M, Schubert M, Preston JC, Fjellheim S (2023) Independent recruitment of FRUITFULL-like transcription factors in the convergent origins of vernalization-responsive grass flowering. Molecular Phylogenetics and Evolution 179: 107678. doi:10.1016/j.ympev.2022.107678

Hjertaas AC, Preston JC, Kainulainen K, Humphreys AM, Fjellheim S (2023) Convergent evolution of the annual life history syndrome from perennial ancestors. Frontiers in Plant Science 13: 1048656. doi:10.3389/fpls.2022.1048656

Das A, Dedon N, Enders DJ, Fjellheim S, Preston JC (2023) Testing the chilling- before drought-tolerance hypothesis in Pooideae grasses. Molecular Ecology 32 (4): 772–785. doi:10.1111/mec.16794

Kornstad T, Ohlson M, Fjellheim S (2022) Phenotypic responses to light, water, and nutrient conditions in the allopolyploid Arabidopsis suecica and its parent species A. thaliana and A. arenosa: Does the allopolyploid outrange its parents? Ecology and Evolution 12 (5): e8915. doi:10.1002/ece3.8915

Fjellheim S, Young DA, Paliocha M, Johnsen SS, Schubert M, Preston JC (2022) Major niche transitions in Pooideae correlate with photoperiodic flowering and evolution of CCT domain genes. Journal of Experimental Botany 73 (12): 4079–4093. doi:10.1093/jxb/erac149

Preston JC, Fjellheim S (2022) Flowering time runs hot and cold. Plant Physiology 190 (1): 5–18. doi:10.1093/plphys/kiac111

Kinmonth-Schultz H, Lewandowska-Sabat A, Imaizumi T, Ward JK, Rognli OA, Fjellheim S (2021) Flowering times of wild Arabidopsis accessions from across Norway correlate with expression levels of FT, CO, and FLC genes. Frontiers in Plant Science 12: 747740. doi:10.3389/fpls.2021.747740

Cullerne DP, Fjellheim S, Spriggs A, Eamens AL, Trevaskis B, Wood CC (2021) A vernalization response in a winter safflower (Carthamus tinctorius) involves the upregulation of homologs of FT, FUL and MAF. Frontiers in Plant Science 12: 639014. doi:10.3389/fpls.2021.639014

Schubert M, Humphreys AM, Lindberg CL, Preston JC, Fjellheim S (2020) To coldly go where no grass has gone before: A multidisciplinary review of cold adaptation in Poaceae. Annual Plant Reviews 3 (4): 523–562. doi:10.1002/9781119312994.apr0739

Lindberg CL, Hanslin HM, Schubert M, Marcussen T, Trevaskis B, Preston JC, Fjellheim S (2020) Increased above-ground resource allocation is a likely precursor for independent evolutionary origins of annuality in the Pooideae grass subfamily. New Phytologist 228 (1): 318–329. doi:10.1111/nph.16666

Preston JC, Fjellheim S (2020) Understanding past, and predicting future, niche transitions based on grass flowering time variation. Plant Physiology 183 (3): 822–839. doi:10.1104/pp.20.00100

Diehn S, Zimmermann B, Tafintseva S, Bağcıoğlu M, Kohler A, Ohlson M, Fjellheim S, Kneipp J (2020) Discrimination of grass pollen of different species by FTIR spectroscopy of individual pollen grains. Analytical and Bioanalytical Chemistry 412 (24): 6459–6474. doi:10.1007/s00216-020-02628-2

Diehn S, Zimmermann B, Tafintseva V, Seifert S, Bağcıoğlu M, Ohlson M, Weidner S, Fjellheim S, Kohler A, Kneipp J (2020) Combining chemical information form grass pollen in multimodal characterization. Frontiers in Plant Science 10: 1788. doi:10.3389/fpls.2019.01788

Aspholm M, Borch-Pedersen K, O’Sullivan K, Fjellheim S, Aardal IHB, Granum PE, Lindbäck T (2019) Importance of individual germination receptor subunits in the cooperative function between GerA and Ynd. Journal of Bacteriology 201 (21): e00451-19. doi:10.1128/jb.00451-19

Brandes U, Furevik BB, Nielsen LR, Kjær ED, Rosef L, Fjellheim S (2019) Introduction history and population genetics of intracontinental scotch broom (Cytisus scoparius) invasion. Diversity and Distributions 25 (11): 1173–1786. doi:10.1111/ddi.12979

Schubert M, Marcussen T, Meseguer AS, Fjellheim S (2019) The grass subfamily Pooideae: Cretaceous–Palaeocene origin and climate‐driven Cenozoic diversification. Global Ecology and Biogeography 28 (8): 1168–1182. doi:10.1111/geb.12923

Schubert M, Grønvold L, Sandve SR, Hvidsten TR, Fjellheim S (2019) Evolution of cold acclimation and its role in niche transition in the temperate grass subfamily Pooideae. Plant Physiology 180 (1): 404–419. doi:10.1104/pp.18.01448

Diehn S, Zimmermann B, Bağcıoğlu M, Seifert S, Kohler A, Ohlson M, Fjellheim S, Weidner S, Kneipp J (2018) Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) shows adaptation of grass pollen composition. Scientific Reports 8: 16591. doi:10.1038/s41598-018-34800-1

Fjellheim S, Preston JC (2018) Shedding light on the role of seasonal flowering in plant niche transitions. American Journal of Botany 105 (2): 136–138. doi:10.1002/ajb2.1037

Sydenham MAK, Eldegard K, Hegland SJ, Nielsen A, Totland Ø, Fjellheim S, Moe SR (2018) Community level niche overlap and broad scale biogeographic patterns of bee communities are driven by phylogenetic history. Journal of Biogeography 40 (2): 461–472. doi:10.1111/jbi.13103

Zimmermann B, Bağcıoğlu M, Tafintseva V, Kohler M, Ohlson M, Fjellheim S (2017) A high-throughput FTIR spectroscopy approach to assess adaptive variation in the chemical composition of pollen. Ecology and Evolution 7 (24): 10839–10849. doi:10.1002/ece3.3619

Lewandowska-Sabat AM, Fjellheim S, Olsen JE, Rognli OA (2017) Photoperiodic sensitivity of flowering time in local populations of Arabidopsis thaliana show clinal variation in a climatic gradient associated with altitude. Frontiers in Plant Science 8: 1046. doi:10.3389/fpls.2017.01046

McKeown M, Schubert M, Preston JC, Fjellheim S (2017) Evolution of the miR5200-FLOWERING LOCUS T regulon in the temperate grass family Pooideae. Molecular Phylogenetics and Evolution 114: 111–121. doi:10.1016/j.ympev.2017.06.005

McKeown M, Schubert M, Marcussen T, Fjellheim S, Preston JC (2016) Evidence for an early origin of vernalization responsiveness in temperate Pooideae grasses. Plant Physiology 172 (1): 416–426. doi:10.1104/pp.16.01023

Nielsen LR, Brandes U, Kjær ED, Fjellheim S (2016) Introduced Scotch broom (Cytisus scoparius) invades the genome of native populations in vulnerable heathland habitats. Molecular Ecology 25 (12): 2790–2804. doi:10.1111/mec.13666

Jørgensen MH, Elameen A, Hofman N, Klemsdal S, Malaval S, Fjellheim S (2016) What’s the meaning of local? Using molecular markers to define seed transfer zones for ecological restoration in Norway. Evolutionary Applications 9 (5): 673–684. doi:10.1111/eva.12378

Kovi MR, Fjellheim S, Sandve SR, Larsen A, Rudi H, Asp T, Kent MP, Rognli OA (2015) Population structure, genetic variation, and linkage disequilibrium in perennial ryegrass populations divergently selected for freezing tolerance. Frontiers in Plant Science 6: 929. doi:10.3389/fpls.2015.00929

Fjellheim S, Tanhuanpää P, Marum P, Manninen O, Rognli OA (2015) Phenotypic or molecular diversity screening for conservation of genetic resources? An example from a genebank collection of the temperate forage grass timothy. Crop Science 55 (4): 1646–1659. doi:10.2135/cropsci2014.12.0825

Fjellheim S, Boden S, Trevaskis B (2014) The role of seasonal flowering responses in adaptation of grasses to temperate climates. Frontiers in Plant Science 5: 431. doi:10.3389/fpls.2014.00431

Vigeland MD, Spannagl M, Asp T, Paina C, Rudi H, Rognli OA, Fjellheim S, Sandve SR (2013) Evidence for adaptive evolution of low-temperature stress response genes in a Pooideae grass ancestor. New Phytologist 199 (4): 1060–1068. doi:10.111/nph.12337

Li C, Rudi H, Stockinger EJ, Cheng H, Cao M, Fox SE, Mockler TC, Westereng B, Fjellheim S, Rognli OA, Sandve SR (2012) Comparative analyses reveal potential uses of Brachypodium distachyon as a model for cold stress responses in temperate grasses. BMC Plant Biology 12: 65. doi:10.1186/1471-2229-12-65

Lewandowska-Sabat AM, Fjellheim S, Rognli OA (2012) The continental-oceanic climatic gradient impose clinal variation in vernalization response in Arabidopsis thaliana. Environmental and Experimental Botany 78: 109–116. doi:10.1016/j.envexpbot.2011.12.033

Lewandowska-Sabat AM, Winge P, Fjellheim S, Dørum G, Bones AM, Rognli OA (2012) Genome wide transcriptional profiling of acclimation to photoperiod in high-latitude accessions of Arabidopsis thaliana. Plant Science 185: 143–155. doi:10.1016/j.plantsci.2011.10.009

Fiil A, Bach-Jensen L, Fjellheim S, Lübberstedt T, Andersen JR (2011) Variation in the vernalization response of a geographically diverse collection of timothy genotypes. Crop Science 51 (6): 2689–2697. doi:10.2135/cropsci2010.12.0677

Sandve SR, Kosmala A, Rudi H, Fjellheim S, Rapacz M, Yamada T, Rognli OA (2011) Molecular mechanisms underlying frost tolerance in perennial grasses adapted to cold climates. Plant Science 180: 69–77. doi:10.1016/j.plantsci.2010.07.011

Elameen A, Larsen A, Klemsdal SS, Fjellheim S, Sundheim L, Msolla S, Masumba E, Rognli OA (2011) Phenotypic diversity of plant morphological and root descriptor traits within a sweet potato, Ipomoea batatas (L.) Lam., germplasm collection from Tanzania. Genetic Resources and Crop Evolution 58 (3): 397–407. doi:10.1007/s10722-010-9585-1

Lewandowska-Sabat AM, Fjellheim S, Rognli OA (2010) Extremely low genetic variability and highly structured local populations of Arabidopsis thaliana at higher latitudes. Molecular Ecology 19 (21): 4753–4764. doi:10.1111/j.1365-294x.2010.04840.x

Sandve SR, Fjellheim S (2010) Did gene family expansions during the Eocene–Oligocene boundary climate cooling play a role in Pooideae adaptation to cool climates? Molecular Ecology 19 (10): 2075–2088. doi:10.1111/j.1365-294X.2010.04629.x

Kjos M, Fjellheim S, Rognli OA, Hvoslef-Eide AK (2010) Amplified fragment length polymorphism (AFLP) markers for fingerprinting of Argyranthemum frutescens cultivars. Scientia Horticulturae 124 (4): 506–510. doi:10.1016/j.scienta.2010.01.023

Fjellheim S, Jørgensen MH, Kjos M, Borgen L (2009) A molecular study of hybridization and homoploid hybrid speciation in Argyranthemum (Asteraceae) on Tenerife, the Canary Islands. Botanical Journal of the Linnean Society 159 (1): 19–31. doi:10.1111/j.1095-8339.2008.00947.x

Fjellheim S, Pašakinskienė I, Grønnerød S, Paplauskienė V, Rognli OA (2009) Genetic structure of local populations and cultivars of meadow fescue from the Nordic and Baltic regions. Crop Science 49 (1): 200–210. doi:10.2135/cropsci2007.08.0422

Elameen A, Klemsdal SS, Dragland S, Fjellheim S, Rognli OA (2008) Genetic diversity in a germplasm collection of roseroot (Rhodiola rosea) in Norway studied by AFLP. Biochemical Systematics and Ecology 36 (9): 706–715. doi:10.1016/j.bse.2008.07.009

Elameen A, Fjellheim S, Larsen A, Rognli OA, Sundheim L, Masumba E, Mtunda K, Klemsdal SS (2008) Analysis of genetic diversity in a sweet potato (Ipomoea batatas L.) germplasm collection from Tanzania. Genetic Resources and Crop Evolution 55 (3): 397–408. doi:10.1007/s10722-007-9247-0

Saski C, Lee SB, Fjellheim S, Guda C, Jansen RK, Luo H, Tomkins J, Rognli OA, Daniell H, Clarke JL (2007) Complete chloroplast genome sequences of Hordeum vulgare, Sorghum bicolor and Agrostis stolonifera, and comparative analyses with other grass genomes. Theoretical and Applied Genetics 115 (4): 571–590. doi:10.1007/s00122-007-0567-4

Fjellheim S, Blomlie ÅB, Marum P, Rognli OA (2007) Phenotypic variation in local populations and cultivars of meadow fescue – potential for improving cultivars by utilizing wild germplasm. Plant Breeding 126 (3): 279–286. doi:10.1111/j.1439-0523.2007.01363.x

Fjellheim S, Rognli OA, Fosnes K, Brochmann C (2006) Phylogeographical history of the widespread meadow fescue (Festuca pratensis Huds.) inferred from chloroplast DNA sequences. Journal of Biogeography 33 (8): 1470–1478. doi:10.1111/j.1365-2699.2006.01521.x

Fjellheim S, Rognli OA (2005) Molecular diversity of local Norwegian meadow fescue (Festuca pratensis Huds.) populations and Nordic cultivars – consequences for management and utilisation. Theoretical and Applied Genetics 111 (4): 640–650. doi:10.1007/s00122-005-2006-8

Fjellheim S, Elven R, Brochmann C (2001) Molecules and morphology in concert. II. The Festuca brachyphylla complex (Poaceae) in Svalbard. American Journal of Botany 88 (5): 869–882. doi:10.2307/2657039

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