Search Results - "Huve, Katja"

Responses of Aspen Leaves to Heatflecks: Both Damaging and Non-Damaging Rapid Temperature Excursions Reduce Photosynthesis by Hüve, Katja, Bichele, Irina, Kaldmäe, Hedi, Rasulov, Bahtijor, Valladares, Fernando, Niinemets, Ülo

“…During exposure to direct sunlight, leaf temperature increases rapidly and can reach values well above air temperature in temperate forest understories,…”
Get full text

Acclimation of isoprene emission and photosynthesis to growth temperature in hybrid aspen: resolving structural and physiological controls by RASULOV, BAHTIJOR, BICHELE, IRINA, HÜVE, KATJA, VISLAP, VIVIAN, NIINEMETS, ÜLO

“…Acclimation of foliage to growth temperature involves both structural and physiological modifications, but the relative importance of these two mechanisms of…”
Get full text

Temperature Response of Isoprene Emission in Vivo Reflects a Combined Effect of Substrate Limitations and Isoprene Synthase Activity: A Kinetic Analysis by Rasulov, Bahtijor, Hüve, Katja, Bichele, Irina, Laisk, Agu, Niinemets, Ülo

“…The responses of isoprene emission rate to temperature are characterized by complex time-dependent behaviors that are currently not entirely understood. To…”
Get full text

Elevated atmospheric CO2 concentration leads to increased whole-plant isoprene emission in hybrid aspen (Populus tremula × Populus tremuloides) by Sun, Zhihong, Niinemets, Ülo, Huve, Katja, Rasulov, Bahtijor, Noe, Steffen M

“…Effects of elevated atmospheric [CO2] on plant isoprene emissions are controversial. Relying on leaf-scale measurements, most models simulating isoprene…”
Get full text

Temperature responses of dark respiration in relation to leaf sugar concentration by Katja, Hüve, Irina, Bichele, Hiie, Ivanova, Olav, Keerberg, Tiit, Pärnik, Bahtijor, Rasulov, Mari, Tobias, Ülo, Niinemets

“…Changes in leaf sugar concentrations are a possible mechanism of short‐term adaptation to temperature changes, with natural fluctuations in sugar…”
Get full text

High within-canopy variation in isoprene emission potentials in temperate trees: Implications for predicting canopy-scale isoprene fluxes by Niinemets, Ülo, Copolovici, Lucian, Hüve, Katja

“…Isoprene emission potential (ES) varies in tree canopies, and such variations have potentially major implications for predicting canopy level emissions. So…”
Get full text

Evidence That Light, Carbon Dioxide, and Oxygen Dependencies of Leaf Isoprene Emission Are Driven by Energy Status in Hybrid Aspen by Rasulov, Bahtijor, Hüve, Katja, Välbe, Mikk, Laisk, Agu, Niinemets, Ülo

“…Leaf isoprene emission scales positively with light intensity, is inhibited by high carbon dioxide (CO₂) concentrations, and may be enhanced or inhibited by…”
Get full text

Enhanced isoprene emission capacity and altered light responsiveness in aspen grown under elevated atmospheric CO2 concentration by Sun, Zhihong, Niinemets, Ülo, Hüve, Katja, Noe, Steffen M., Rasulov, Bahtijor, Copolovici, Lucian, Vislap, Vivian

“…Controversial evidence of CO2‐responsiveness of isoprene emission has been reported in the literature with the response ranging from inhibition to enhancement,…”
Get full text

Induction of a Longer Term Component of Isoprene Release in Darkened Aspen Leaves: Origin and Regulation under Different Environmental Conditions by Rasulov, Bahtijor, Hüve, Katja, Laisk, Agu, Niinemets, Ülo

“…After darkening, isoprene emission continues for 20 to 30 min following biphasic kinetics. The initial dark release of isoprene (postillumination emission),…”
Get full text

novel device detects a rapid ozone-induced transient stomatal closure in intact Arabidopsis and its absence in abi2 mutant by Kollist, Triin, Moldau, Heino, Rasulov, Bahtijor, Oja, Vello, Rämma, Heikko, Hüve, Katja, Jaspers, Pinja, Kangasjärvi, Jaakko, Kollist, Hannes

“…To follow stomatal responses to ozone (O₃) in different Arabidopsis lines, we constructed a rapid-response O₃ exposure/gas-exchange measurement device…”
Get full text

Heat sensitivity of photosynthetic electron transport varies during the day due to changes in sugars and osmotic potential by HÜVE, KATJA, BICHELE, IRINA, TOBIAS, MARI, NIINEMETS, ÜLO

“…ABSTRACT In water‐stressed leaves, accumulation of neutral osmotica enhances the heat tolerance of photosynthetic electron transport. There are large diurnal…”
Get full text

Determining the timepoint when .sup.14C tracer accurately reflect photosynthate use in the plant-soil system by Remus, Rainer, Huve, Katja, Porschmann, Jurgen, Augustin, Jurgen

“…Background and aims Only the carbon (C) isotope pulse labeling approach can provide time-resolved data concerning the input and turnover of plant-derived C in…”
Get full text

Ecosystem-scale biosphere–atmosphere interactions of a hemiboreal mixed forest stand at Järvselja, Estonia by Noe, Steffen M., Kimmel, Veljo, Hüve, Katja, Copolovici, Lucian, Portillo-Estrada, Miguel, Püttsepp, Ülle, Jõgiste, Kalev, Niinemets, Ülo, Hörtnagl, Lukas, Wohlfahrt, Georg

“…▶ Above/below canopy eddy covariance CO 2/H 2O fluxes in a hemiboreal forest ecosystem. ▶ Reactive trace gases quantified. ▶ BVOC fluxes from soil and leaves…”
Get full text

Reductive titration of photosystem I and differential extinction coefficient of P700 + at 810–950 nm in leaves by Oja, Vello, Bichele, Irina, Hüve, Katja, Rasulov, Bahtijor, Laisk, Agu

“…We describe a method of reductive titration of photosystem I (PSI) density in leaves by generating a known amount of electrons (e −) in photosystem II (PSII)…”
Get full text

Transport of phosphorus in leaf veins of Vicia faba L by Hüve, Katja, Merbach, Wolfgang, Remus, Rainer, Lüttschwager, Dietmar, Wittenmayer, Lutz, Hertel, Klaus, Schurr, Ulrich

“…The plant nutrient phosphorus (P) is spread throughout the plant within the transpiration stream after uptake in the form of phosphate via the roots…”
Get full text

Transport of Foliar Applied Iron (59Fe) in Vicia faba by Hüve, Katja, Remus, Rainer, Lüttschwager, Dietmar, Merbach, Wolfgang

“…Radioactively labeled iron (59Fe) was used to study iron retranslocation from mature leaves of Broad bean (Vicia faba L. var. Scirocco). Our experiments…”
Get full text

When it is too hot for photosynthesis: heat-induced instability of photosynthesis in relation to respiratory burst, cell permeability changes and H₂O₂ formation by HÜVE, KATJA, BICHELE, IRINA, RASULOV, BAHTIJOR, NIINEMETS, ÜLO

“…Photosynthesis rate (An) becomes unstable above a threshold temperature, and the recovery upon return to low temperature varies because of reasons not fully…”
Get full text

Elevated [CO2] magnifies isoprene emissions under heat and improves thermal resistance in hybrid aspen by Sun, Zhihong, Hüve, Katja, Vislap, Vivian, Niinemets, Ülo

“…Isoprene emissions importantly protect plants from heat stress, but the emissions become inhibited by instantaneous increase of [CO2], and it is currently…”
Get full text

Enhanced isoprene emission capacity and altered light responsiveness in aspen grown under elevated atmospheric CO 2 concentration by Sun, Zhihong, Niinemets, Ülo, Hüve, Katja, Noe, Steffen M., Rasulov, Bahtijor, Copolovici, Lucian, Vislap, Vivian

“…Controversial evidence of CO 2 ‐responsiveness of isoprene emission has been reported in the literature with the response ranging from inhibition to…”
Get full text

Determining the timepoint when ^sup 14^C tracer accurately reflect photosynthate use in the plant-soil system by Remus, Rainer, Hüve, Katja, Pörschmann, Jürgen, Augustin, Jürgen

“…(ProQuest: ... denotes formulae and/or non-USASCII text omitted; see image) Background and aims Only the carbon (C) isotope pulse labeling approach can provide…”
Get full text