Øystein Johnsen

Øystein Johnsen publication distribution in Plant Science and Agronomy in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Plant Science and Agronomy in 2026. The highlighted bar marks where Øystein Johnsen sits on this spectrum.

Øystein Johnsen D-index placement in Plant Science and Agronomy in 2026

The chart shows the D-index (discipline H-index) distribution of Plant Science and Agronomy scientists ranked by Research.com in 2026. The highlighted bar marks where Øystein Johnsen sits on this spectrum.

Best Publications

• Tree and forest functioning in response to global warming

  Henrik Saxe;Melvin G. R. Cannell;Øystein Johnsen;Michael G. Ryan

  1011
  Citations

• Epigenetic regulation of adaptive responses of forest tree species to the environment.

  Katharina Bräutigam;Kelly J. Vining;Clément Lafon-Placette;Carl G. Fossdal

  367
  Citations

• Genetic consequences of glacial survival and postglacial colonization in Norway spruce: combined analysis of mitochondrial DNA and fossil pollen.

  Mari Mette Tollefsrud;Roy Kissling;Felix Gugerli;Øystein Johnsen

  326
  Citations

• Climatic adaptation in Picea abies progenies is affected by the temperature during zygotic embryogenesis and seed maturation

  Øystein Johnsen;Carl Gunnar Fossdal;Nina Nagy;Jørgen Mølmann

  179
  Citations

• Timing of bud set in Picea abies is regulated by a memory of temperature during zygotic and somatic embryogenesis

  Harald Kvaalen;Øystein Johnsen

  178
  Citations

• MicroRNAs, the epigenetic memory and climatic adaptation in Norway spruce

  Igor A. Yakovlev;Carl Gunnar Fossdal;Øystein Johnsen

  171
  Citations

• Daylength and temperature during seed production interactively affect adaptive performance of Picea abies progenies.

  Øystein Johnsen;Ola Gram Dæhlen;Geir Østreng;Tore Skrøppa

  144
  Citations

• Climatic control of bud burst in young seedlings of nine provenances of Norway spruce.

  Gunnhild Søgaard;Oystein Johnsen;Jarle Nilsen;Olavi Junttila

  115
  Citations

• An adaptive epigenetic memory in conifers with important implications for seed production

  Igor Yakovlev;Carl Gunnar Fossdal;Tore Skrøppa;Jorunn E. Olsen

  107
  Citations

• Differential gene expression related to an epigenetic memory affecting climatic adaptation in Norway spruce

  Igor A. Yakovlev;Daniel K.A. Asante;Daniel K.A. Asante;Carl Gunnar Fossdal;Olavi Junttila

  101
  Citations

• Temperature-dependent differential transcriptomes during formation of an epigenetic memory in Norway spruce embryogenesis

  Igor A. Yakovlev;YeonKyeong Lee;Björn Rotter;Jorunn E. Olsen

  94
  Citations

• Effects of red, far‐red and blue light in maintaining growth in latitudinal populations of Norway spruce (Picea abies)

  Jørgen Alexander Mølmann;Olavi Junttila;Oystein Johnsen;Jorunn Elisabeth Olsen

  89
  Citations

• Variations in cryotolerance of embryogenic Picea abies cell lines and the association to genetic, morphological, and physiological factors

  J. V. Nørgaard;V. Duran;Ø. Johnsen;P. Krogstrup

  87
  Citations

• Dehydrins expression related to timing of bud burst in Norway spruce

  Igor A. Yakovlev;Daniel K. A. Asante;Daniel K. A. Asante;Carl Gunnar Fossdal;Jouni Partanen

  85
  Citations

• Rapid change in adaptive performance from one generation to the next in Picea abies—Central European trees in a Nordic environment

  Tore Skrøppa;Mari Mette Tollefsrud;Christoph Sperisen;Øystein Johnsen

  79
  Citations

• Analysis of gene expression during bud burst initiation in Norway spruce via ESTs from subtracted cDNA libraries

  Igor A. Yakovlev;Carl-Gunnar Fossdal;Øystein Johnsen;Olavi Junttila

  76
  Citations

• Freezing tolerance in two Norway spruce (Picea abies [L.] Karst.) progenies is physiologically correlated with drought tolerance.

  Constanze Blödner;Torre Skroppa;Øystein Johnsen;Andrea Polle

  76
  Citations

• Effects of the parental environment on full-sib families of Pinussylvestris

  Ingegerd Dormling;Øystein Johnsen

  74
  Citations

• Influence of the female flowering environment on autumn frost-hardiness of Picea abies progenies

  Ø. Johnsen;T. Skrøppa;O. Junttila;O. G. Dæhlen

  74
  Citations

• Field performance and early test results of offspring from two Norway spruce seed orchards containing clones transferred to warmer climates

  Tore SkrøppaT. Skrøppa;Ketil KohmannK. Kohmann;Øystein JohnsenØ. Johnsen;Arne SteffenremA. Steffenrem

  72
  Citations

• Effects of Rhizoctonia infection and drought on peroxidase and chitinase activity in Norway spruce (Picea abies)

  Nina Elisabeth Nagy;Carl Gunnar Fossdal;Lars Sandved Dalen;Anders Lönneborg

  70
  Citations

• Phenotypic changes in progenies of northern clones of Picea abies (L) Karst. grown in a southern seed orchard

  Øystein Johnsen

  65
  Citations

• Sexual reproduction in a greenhouse and reduced autumn frost hardiness of Picea abies progenies.

  Øystein Johnsen;Tore Skrøppa;Gunnar Haug;Inger Apeland

  58
  Citations

• Dehydrins in maritime pine (Pinus pinaster) and their expression related to drought stress response

  Tania Velasco-Conde;Igor Yakovlev;Juan Pedro Majada;Ismael Aranda

  40
  Citations

• Local and systemic stress responses in Norway spruce: Similarities in gene expression between a compatible pathogen interaction and drought stress

  Carl Gunnar Fossdal;Nina Elisabeth Nagy;Øystein Johnsen;Lars Sandved Dalen

  35
  Citations

• The influence of root-zone temperature on growth of Betula pendula Roth.

  Ingjerd Solfjeld;Øystein Johnsen

  33
  Citations

• Effect of frost nights and day and night temperature during dormancy induction on frost hardiness, tolerance to cold storage and bud burst in seedlings of Norway spruce

  Gunnhild Søgaard;Gunnhild Søgaard;Aksel Granhus;Aksel Granhus;Øystein Johnsen

  31
  Citations

• Phenotypic changes in progenies of northern clones ofPicea abies(L.) Karst. grown in a southern seed orchard: III. Climatic damage and growth in a progeny trial

  Øystein Johnsen;Jon Dietrichson;Gisle Skaret

  30
  Citations