Gunnar Öquist
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Swedish botanist
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Biology
Gunnar Öquist's Degrees
- PhD Plant Physiology Umeå University
- Masters Botany Uppsala University
Why Is Gunnar Öquist Influential?
(Suggest an Edit or Addition)According to Wikipedia, Gunnar Öquist is a Swedish biologist and professor of plant physiology at Umeå University, and served as the permanent secretary of the Royal Swedish Academy of Sciences from 2003 to 2010. He graduated from Uppsala University in 1967 and enrolled in postgraduate studies in Umeå in 1968. He earned his Ph.D. at Umeå University in 1972 with the Thesis Some effects of light intensity and iron deficiency on pigmentation and photosynthesis in the blue-green alga Anacystis nidulans. He was made docent in plant physiology 1974. After two years at Lund University he returned to Umeå in 1976 and was made a professor in 1981.
Gunnar Öquist's Published Works
Number of citations in a given year to any of this author's works
Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author
Published Works
- Energy balance and acclimation to light and cold (1998) (947)
- Chlorophyll Fluorescence Analysis of Cyanobacterial Photosynthesis and Acclimation (1998) (763)
- Photosynthesis, photoinhibition and low temperature acclimation in cold tolerant plants (1993) (382)
- Chlorophyll fluorescence as a tool in photosynthesis research (1993) (363)
- Photoinhibition of photosynthesis represents a mechanism for the long-term regulation of photosystem II (1992) (273)
- Seasonal changes in photosystem II organisation and pigment composition in Pinus sylvestris (1995) (257)
- A PORTABLE, MICROPROCESSOR OPERATED INSTRUMENT FOR MEASURING CHLOROPHYLL FLUORESCENCE KINETICS IN STRESS PHYSIOLOGY (1988) (231)
- Effects of low temperature on photosynthesis (1983) (230)
- Intermittent low temperatures constrain spring recovery of photosynthesis in boreal Scots pine forests (2004) (229)
- The effects of cadmium on photosynthesis of Phaseolus vulgaris - a fluorescence analysis. (1993) (201)
- The effects of cadmium on photosynthesis of Phaseolus vulgaris – a fluorescence analysis (1993) (180)
- Two different strategies for light utilization in photosynthesis in relation to growth and cold acclimation (2002) (168)
- Recovery of photosynthesis in winter‐stressed Scots pine (1991) (151)
- Mechanistic differences in photoinhibition of sun and shade plants (1992) (135)
- Cold acclimation and photoinhibition of photosynthesis in Scots pine (1996) (132)
- Expression of the isiA gene is essential for the survival of the cyanobacterium Synechococcus sp. PCC 7942 by protecting photosystem II from excess light under iron limitation (1999) (129)
- Effects of cold acclimation on the susceptibility of photosynthesis to photoinhibition in Scots pine and in winter and spring cereals : a fluorescence analysis (1991) (128)
- Photoinhibition of photosynthesis in Lemna gibba as induced by the interaction between light and temperature. I: Photosynthesis in vivo (1984) (124)
- Primary carbon metabolism in Phaseolus vulgaris plants under Cd/Fe interaction (1997) (121)
- LOW-TEMPERATURE STRESS AND PHOTOPERIOD AFFECT AN INCREASED TOLERANCE TO PHOTOINHIBITION IN PINUS-BANKSIANA SEEDLINGS (1995) (120)
- Cold acclimation of Arabidopsis thaliana results in incomplete recovery of photosynthetic capacity, associated with an increased reduction of the chloroplast stroma (2001) (120)
- A Method for Studying Photosynthetic Capacities of Unicellular Algae Based on in vivo Chlorophyll Fluorescence (1977) (117)
- Energy balance, organellar redox status, and acclimation to environmental stress (2006) (117)
- Inhibition of photosynthesis by freezing temperatures and high light Levels in cold‐acclimated seedlings of Scots pine (Pinus sylvestris). ‐ I. Effects on the light‐limited and light‐saturated rates of CO2 assimilation (1985) (116)
- Quantum yields of photosynthesis at temperatures between −;2°C and 35°C in a cold‐tolerant C3 plant (Pinus sylvestris) during the course of one year (1987) (114)
- Photoinhibition of photosynthesis in Lemna gibba as induced by the interaction between light and temperature. III. Chlorophyll fluorescence at 77 K (1984) (111)
- Effects of frost hardening, dehardening and freezing stress on in vivo chlorophyll fluorescence of seedlings of Scots pine (Pinus sylvestris L.) (1988) (107)
- Cold-hardening-induced resistance to photoinhibition of photosynthesis in winter rye is dependent upon an increased capacity for photosynthesis (2004) (99)
- Photosystem II reaction centre quenching: mechanisms and physiological role (2008) (93)
- THE TEMPERATURE-DEPENDENCE OF THE REDOX STATE OF Q(A) AND SUSCEPTIBILITY OF PHOTOSYNTHESIS TO PHOTOINHIBITION (1993) (90)
- CP43′, the isiA Gene Product, Functions as an Excitation Energy Dissipator in the Cyanobacterium Synechococcus sp. PCC 7942¶ (2001) (89)
- Photosynthetic electron transport adjustments in overwintering Scots pine (Pinus sylvestris L.) (2001) (88)
- Photoinhibition and recovery of photosynthesis in intact barley leaves at 5 and 20°C (1991) (83)
- Effects of drought on photosynthesis, chlorophyll fluorescence and photoinhibition susceptibility in intact willow leaves (1985) (83)
- Role of a novel photosystem II‐associated carbonic anhydrase in photosynthetic carbon assimilation in Chlamydomonas reinhardtii (1999) (83)
- SEASONALLY INDUCED CHANGES IN ACYL LIPIDS AND FATTY-ACIDS OF CHLOROPLAST THYLAKOIDS OF PINUS-SILVESTRIS - A CORRELATION BETWEEN THE LEVEL OF UNSATURATION OF MONOGALACTOSYLDIGLYCERIDE AND THE RATE OF ELECTRON-TRANSPORT (1982) (82)
- Changes in Pigment Composition and Photosynthesis Induced by Iron-Deficiency in the Blue-Green Alga Anacystis nidulans (1971) (80)
- Iron Deficiency in Cyanobacteria Causes Monomerization of Photosystem I Trimers and Reduces the Capacity for State Transitions and the Effective Absorption Cross Section of Photosystem I in Vivo1 (2006) (77)
- A Transient Exchange of the Photosystem II Reaction Center Protein D1:1 with D1:2 during Low Temperature Stress ofSynechococcus sp. PCC 7942 in the Light Lowers the Redox Potential of QB * (2002) (75)
- Photostasis in Plants, Green Algae and Cyanobacteria: The Role of Light Harvesting Antenna Complexes (2003) (75)
- Iron Deficiency in the Blue-Green Alga Anacystis nidulans: Changes in Pigmentation and Photosynthesis (1974) (74)
- Changes in the Redox Potential of Primary and Secondary Electron-Accepting Quinones in Photosystem II Confer Increased Resistance to Photoinhibition in Low-Temperature-Acclimated Arabidopsis1 (2003) (72)
- Photoinhibition of photosynthesis in Lemna gibba as induced by the interaction between light and temperature. II. Photosynthetic electron transport (1984) (72)
- Mitochondria contribute to increased photosynthetic capacity of leaves of winter rye (Secale cereale L.) following cold‐hardening (1995) (71)
- Inhibition of photosynthesis by freezing temperatures and high light levels in cold-acclimated seedlings of Scots pine (Pinus sylvestris). – II. Effects on chlorophyll fluorescence at room temperature and 77 K. (1985) (70)
- Iron stress restricts photosynthetic intersystem electron transport in Synechococcus sp. PCC 7942 (2000) (70)
- Effects of artificial frost hardening and winter stress on net photosynthesis, photosynthetic electron transport and RuBP carboxylase activity in seedlings of Pinus silvestris (1980) (69)
- Effects of Frost Hardening and Dehardening on Photosynthetic Electron Transport and Fluorescence Properties in Isolated Chloroplasts of Pinus silvestris (1978) (67)
- Reaction centre quenching of excess light energy and photoprotection of photosystem II (2008) (66)
- Iron Deficiency in the Blue‐Green Alga Anacystis nidulans: Fluorescence and Absorption Spectra Recorded at 77°K (1974) (64)
- Low-temperature modulation of the redox properties of the acceptor side of photosystem II: photoprotection through reaction centre quenching of excess energy (2003) (62)
- Seasonal and Experimentally Induced Changes in the Ultrastructure of Chloroplasts of Pinus silvestris (1979) (60)
- Photosynthesis and photoinhibition in leaves of chlorophyll b‐less barley in relation to absorbed light (1992) (58)
- On the relationship between the quantum yield of Photosystem II electron transport, as determined by chlorophyll fluorescence and the quantum yield of CO2-dependent O2 evolution (1992) (58)
- Cold-hardening results in increased activity of enzymes involved in carbon metabolism in leaves of winter rye (Secale cereale L.) (1995) (57)
- Temperature-dependent photoinhibition and recovery of photosynthesis in the green alga Chlamydomonas reinhardtii acclimated to 12 and 27oC (1990) (56)
- Seasonal Effects on Photosynthetic Electron Transport and Fluorescence Properties in Isolated Chloroplasts of Pinus silvestris (1978) (55)
- Seasonal responses of photosynthetic electron transport in Scots pine (Pinus sylvestris L.) studied by thermoluminescence (2002) (52)
- Acclimation to temperature and irradiance modulates PSII charge recombination (2006) (51)
- Seasonal Effects on Chlorophyll‐Protein Complexes Isolated from P‐inus silvestris (1978) (50)
- Chilling injury and recovery in detached and attached leaves measured by chlorophyll fluorescence (1987) (48)
- Effects of copper chloride on photosynthetic electron transport and chlorophyll-protein complexes of Spinacia oleracea (1980) (48)
- Environmental Stress and Photosynthesis (1987) (46)
- Photoinhibition of Photosynthesis and its Recovery in the Green Alga Chlamydomonas reinhardii (1987) (46)
- Effects of desiccation on the excitation energy distribution from phycoerythrin to the two photosystems in the red alga Porphyra perforata (1982) (46)
- Photosynthetic efficiency of Betula pendula acclimated to different quantum flux densities (1982) (44)
- Monitoring chilling injury: A comparison of chlorophyll fluorescence measurements, post‐chilling growth and visible symptoms of injury in Zea mays (1988) (43)
- Metabolic Changes During Cold Acclimation and Subsequent Freezing and Thawing (2001) (42)
- Reduced sensitivity to photoinhibition following frost-hardening of winter rye is due to increased phosphate availability (1993) (42)
- Characterization of the photosynthetic apparatus in cortical bark chlorenchyma of Scots pine (2006) (42)
- Light‐regulated expression of the psbA transcript in the cyanobacterium Anacystis nidulans (1988) (41)
- Dynamic responses of photosystem II and phycobilisomes to changing light in the cyanobacterium Synechococcus sp. PCC 7942 (1995) (40)
- Photoinhibition of photosynthesis and growth responses at different light levels in psbA gene mutants of the cyanobacterium Synechococcus (1991) (39)
- Photosystem II reaction centres stay intact during low temperature photoinhibition (1993) (38)
- Correlation of the photosystem I and II reaction center chlorophyll-protein complexes, CP-a1 and CP-aII with photosystem activity and low temperature fluorescence emission properties in mutants of Scenedesmus (1980) (37)
- Distribution of Chlorophyll between the Two Photoreactions in Photosynthesis of the Blue-Green Alga Anacystis nidulans Grown at Two Different Light Intensities (1974) (37)
- Inhibition of photosynthetic electron transport and formation of inactive chlorophyll in winter stressed Pinus silvestris (1980) (37)
- Effects of winter stress on photosynthetic electron transport and energy distribution between the two photosystems of pine as assayed by chlorophyll fluorescence kinetics (2004) (36)
- The cyanobacterium Synechococcus modulates Photosystem II function in response to excitation stress through D1 exchange (1995) (35)
- PREDICTION OF FROST HARDINESS IN SEEDLINGS OF SCOTS PINE (PINUS-SYLVESTRIS) USING MULTIVARIATE-ANALYSIS OF CHLOROPHYLL-A FLUORESCENCE AND LUMINESCENCE KINETICS (1990) (34)
- Effects of frost hardening on photosynthetic quantum yield, chlorophyll organization, and energy distribution between the two photosystems in Scots pine (1986) (33)
- ON THE ROLE OF BETA-CAROTENE IN THE REACTION CENTER CHLOROPHYLL A ANTENNAE OF PHOTOSYSTEM-I (1980) (33)
- The Potential for Photoinhibition of Pinus sylvestris L. Seedlings Exposed to High Light and Low Soil Temperature (1991) (33)
- Two forms of the Photosystem II D1 protein alter energy dissipation and state transitions in the cyanobacterium Synechococcus sp. PCC 7942 (1996) (32)
- An apparatus for measuring photosynthetic quantum yields and quanta absorption spectra of intact plants (1978) (30)
- Cold acclimation of the Arabidopsis dgd1 mutant results in recovery from photosystem I‐limited photosynthesis (2006) (30)
- PREFERENTIAL DISTRIBUTION OF EXCITATION-ENERGY INTO PHOTOSYSTEM-I OF DESICCATED SAMPLES OF THE LICHEN CLADONIA-IMPEXA AND THE ISOLATED LICHEN-ALGA TREBOUXIA-PYRIFORMIS (1980) (30)
- Effects of frost hardening on the composition of galactolipids and phospholipids occurring during isolation of chloroplast thylakoids from needles of scots pine (1985) (29)
- Light and temperature dependent inhibition of photosynthesis in frost-hardened and un-hardened seedlings of pine (1989) (28)
- Shoulder region of the rat: Anatomy and fiber composition of some suprascapular nerve branches (1994) (27)
- Effects of Winter Stress on Chlorophyll Organization and Function in Scots Pine (1986) (26)
- Contrasting acclimation abilities of two dominant boreal conifers to elevated CO2 and temperature. (2018) (26)
- Quantifying and monitoring functional photosystem II and the stoichiometry of the two photosystems in leaf segments: approaches and approximations (2012) (26)
- Cloning of the β‐phycocyanin gene from Anacystis nidulans (1985) (26)
- Adaptations in Pigment Composition and Photosynthesis by Far Red Radiation in Chlorella pyrenoidosa (1969) (25)
- Photoprotection of Photosystem II: Reaction Center Quenching Versus Antenna Quenching (2008) (24)
- Effect of long-term photoinhibition on growth and photosynthesis of cold-hardened spring and winter wheat (1992) (24)
- The Effects of Desiccation on Excitation Energy Transfer at Physiological Temperatures Between the Two Photosystems of the Red Alga Porphyra perforata (1981) (22)
- Light‐Induced Changes in Pigment Composition of Photosynthetic Lamellae and Cell‐Free Extracts from the Blue‐Green Alga Anacystis nidulans (1974) (22)
- Oxygen-dependent electron flow influences photosystem II function and psbA gene expression in the cyanobacterium Synechococcus sp PCC 7942 (1999) (22)
- The photosynthetic electron transport capacity of chloroplasts prepared from needles of unhardened and hardened seedlings of (1976) (21)
- Changes in Photosystem II fluorescence in Chlamydomonas reinhardtii exposed to increasing levels of irradiance in relationship to the photosynthetic response to light (2004) (20)
- Seasonal reorganisation of Photosystem II and pigment composition in Pinus sylvestris (1995) (20)
- ELECTRON-TRANSPORT AND FLUORESCENCE STUDIES ON THE FUNCTIONAL INTERACTION BETWEEN PHOSPHO-LHC-II AND PHOTOSYSTEM-I IN ISOLATED STROMA LAMELLAE VESICLES (1986) (19)
- Structural and functional relationships in developing Pinus silvestris chloroplasts (1980) (19)
- Over-production of the D1:2 protein makes Synechococcus cells more tolerant to photoinhibition of photosystem II (1996) (19)
- The variable chlorophyll a fluorescence as a measure of photosynthetic capacity in algae: With 7 figures in the text (1978) (17)
- D1 exchange and the Photosystem II repair cycle in the cyanobacterium Synechococcus (1996) (15)
- Sequential extraction of chlorophyll from chlorophyll‐protein complexes in lyophilized pea thylakoids with solvents of different polarity (1980) (15)
- Photosynthetic efficiency during ontogenesis of leaves of Betula pendula (1982) (15)
- Development of photosynthetic electron transport in Pinus silvestris (1980) (15)
- Chapter 17 - Energy Sensing and Photostasis in Photoautotrophs (2002) (14)
- EFFECTS OF DESICCATION ON THE 77-DEGREES-K FLUORESCENCE PROPERTIES OF THE LIVERWORT PORELLA-NAVICULARIS AND THE ISOLATED LICHEN GREEN-ALGA TREBOUXIA-PYRIFORMIS (1982) (14)
- Over-production of the D1 protein of photosystem II reaction centre in the cyanobacterium Synechococcus sp. PCC 7942 (1994) (14)
- Fluorescence emission from photosystem I at room temperature in the red alga Porphyra perforata (1982) (14)
- Why Are Some Nations More Successful Than Others in Research Impact? A Comparison Between Denmark and Sweden (2015) (13)
- Effects of Cold Acclimation on the Susceptibility of Photosynthesis to Photoinhibition (1990) (13)
- Effects of Season and Low Temperature on Polypeptides from Thylakoids Isolated from Chloroplasts of Pinus silvestris (1978) (12)
- Organization of the Phycocyanin Gene Clusters in Anacystis nidulans. (1987) (11)
- PHOTOINHIBITION AND RECOVERY OF PHOTOSYNTHESIS IN ANACYSTIS-NIDULANS (1987) (11)
- Temperature-Induced Changes of Variable Fluorescence-Yield in Intact Leaves (1982) (11)
- LOW TEMPERATURE EFFECTS ON PHOTOSYNTHESIS IN CONIFERS (1983) (11)
- Light‐induced changes of photosystem II activity in dark‐grown Scots pine seedlings (1992) (10)
- Membrane lipid composition and restoration of photosynthesis during low temperature acclimation in Synechococcus sp. strain PCC 7942 (1998) (10)
- Quantacorrected Spectrometer for Recording Different Types of Photobiological, Photochemical, and Spectrophotometric Measurements (1975) (9)
- Fostering breakthrough research (2012) (9)
- 4 – CHLOROPLAST STRUCTURE AND PHOTOSYNTHETIC EFFICIENCY (1981) (8)
- Stress and Adaptation in Photosynthesis (1988) (8)
- Automatic Recordings of Action Spectra for Partial Reactions of Photosynthesis (1974) (8)
- The Spectral and Photochemical Properties of Subchloroplast Membrane Particles from Pinus silvestris (1975) (7)
- CP43′, the isiA Gene Product, Functions as an Excitation Energy Dissipator in the Cyanobacterium Synechococcus sp. PCC 7942 ¶ (2001) (7)
- Effects of low temperature acclimation upon photosynthetic induction in barley primary leaves (1988) (7)
- Galactolipid biosynthesis in chloroplasts of non-hardened and frost-hardened seedlings of Scots pine. (1990) (7)
- Lipid and Fatty Acid Composition of Chloroplast Thylakoids Isolated from Betula pendula Leaves in Different Stages of Development or Acclimated to Different Quantum Flux Densities (1981) (6)
- Algal and bacterial production in a coastal area (Norrbyn) of the northern Bothnian Sea (1983) (6)
- Differential resistance of frost-hardened and non-hardened winter rye to photoinhibition of photosynthesis is due to an increased capacity of frost-hardened rye to keep QA oxidized under similar irradiance and temperature (1992) (6)
- Solubilization and spectral characteristics of chlorophyll-protein complexes isolated from the thermophilic blue-green alga Synechococcus lividus☆ (1981) (6)
- Studies on Alkylsulfinylcarboxylic Acids. IV. Reduction of cis- and trans-beta-Ethylsulfinylcrotonic Acids by Means of Iodine in Acid Solution. (1965) (6)
- DeltapH- and DeltaPsi-Induced ATP and PPi Synthesis in Rhodospirillum rubrum Chromatophores. (1987) (5)
- A carbonic anhydrase catalyzed CO2 pump in Chlamydomonas reinhardtii : In vivo experiments, computer modelling, and theory (2000) (4)
- CP43' induced under Fe-stress in Synechococcus sp. PCC 7942 is associated with PSI (2001) (4)
- A tribute to Per Halldal (1922–1986), a Norwegian photobiologist in Sweden (2007) (4)
- Room for increased ambitions? Governing breakthrough research in Norway 1990-2013 (2014) (4)
- A PSII-Associated Carbonic Anhydrase Facilitates CO 2 Supply to Carbon Assimilaiton in Chlamydomonas Reinhardtii (1998) (3)
- Screening for Photoinhibition of Photosynthesis in the Field Using a Portable Fluorimeter (1988) (3)
- Identification of the photosynthetic co2 fixation inhibitors in isolated pine chloroplasts as resin acids (1984) (3)
- Light and temperature effects on the organization and function of photosystem 2 in the cyanobacterium Synechococcus (1995) (3)
- Light-modulated Antennae Acclimation in the Cyanobacterium Anacystis nidulans: Effects of Transcriptional and Translational Inhibitors (1986) (3)
- Thermodynamics of complexity (2003) (3)
- The optimum temperature window for leaf C-export in the light is narrower than that for C-fixation (2001) (2)
- Trans-Δ3-Hexadecenoic Acid, LHCII and Low Temperature Development in Herbaceous Plants (1990) (1)
- The decreased PG content of pgp1 inhibits PSI photochemistry and limits reaction center and light-harvesting polypeptide accumulation in response to cold acclimation (2022) (1)
- Over-Production of the D1:2 Protein in Synechococcus sp. PCC 7942 Cells (1995) (0)
- David (Dave) Charles Fork (1929–2020): a gentle human being, a great experimenter, and a passionate researcher (2022) (0)
- Session 10 Photosynthesis (2008) (0)
- Quantifying and monitoring functional photosystem II and the stoichiometry of the two photosystems in leaf segments: approaches and approximations (2012) (0)
- Iron Stress-Induced Functional Uncoupling of Photosystem II and Photosystem I In Synechococcus SP. PCC 7942 (1998) (0)
- Wah Soon Chow, a teacher, a friend and a colleague (2021) (0)
- Effects of Growth at Cold Hardening Temperatures and Temperature Shifts on Resistance to Photoinhibition (2018) (0)
- S 3-061 CP 43 ’ induced under Fe-stress in Synechococcus sp . PCC 7942 is associated with PSI (2001) (0)
- Effects of Low Temperature Stress and Cold Acclimation on Photosynthesis in Arabidopsis thaliana Leaves. (1998) (0)
- Session 10 Photosynthesis (2008) (0)
- Review of the needs for European synchrotron and related beam-lines for biological and biomedical research (1998) (0)
- Effect of cold acclimation and the pgp1 mutation on the expression of GLK1 and GLK2 and chloroplast development in Arabidopsis thaliana (2011) (0)
- Functioning of Rubisco in plants under Cd-Fe interaction (1996) (0)
- Cd/Fe interaction and susceptibility of bean seedlings to photoinhibition (1995) (0)
- Light utilization in photosynthesis after cold acclimation of plants representing two different seasonal growth strategies (2001) (0)
- Fall in profits prompts major job cuts at Merck (2008) (0)
- The decreased PG content of pgp1 inhibits PSI photochemistry and limits reaction center and light-harvesting polypeptide accumulation in response to cold acclimation (2022) (0)
- A cyanobacterium resists UV-B by exchanging Photosystem II D1 proteins. (1997) (0)
- Excitation of Electron Transport Regulates D1 Exchange in Synechococcus (1995) (0)
- Increased resistance of photosystem II and photosystem I photochemistry to high light stress correlates with altered redox properties of QB following cold acclimation in Arabidopsis thaliana (2001) (0)
- 1 2 Quantifying and monitoring functional Photosystem II and the 3 stoichiometry of the two photosystems in leaf segments : Approaches and 4 approximations 5 6 (2012) (0)
- An Iron-Stress-Induced Chl-Protein Complex of Photosytem II Serves as an Excitation Energy Dissipater in the Iron-Strayed Cyanobacterium Synechococcus SP. PCC 7942 (1998) (0)
- Wah Soon Chow, a teacher, a friend and a colleague (2021) (0)
- The role of co-operation and mobility in the formative years (2006) (0)
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