Results 181 to 190 of about 3,264 (215)

Comparative nutrient economy, stable isotopes, and related adaptive traits in Picea rubens, Picea mariana, and their hybrids

Trees, 2007
Nutrient- and water economy-related traits in plants have significant implications for growth and fitness. We explored, examined, and compared nutrient concentrations, use efficiencies, assimilation, and informative isotopic elements in a seedling provenance experiment, and in seedling and mature tree controlled-cross hybrid experiments of red spruce ...
John E. Major, Alex Mosseler, Debby C. Barsi, Moira Campbell   +3 more
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Thermal acclimation of photosynthesis in black spruce [Picea mariana (Mill.) B.S.P.]

Plant, Cell & Environment, 2008
ABSTRACTWe investigated the thermal acclimation of photosynthesis and respiration in black spruce seedlings [Picea mariana (Mill.) B.S.P.] grown at 22/14 °C [low temperature (LT)] or 30/22 °C [high temperature (HT)] day/night temperatures. Net CO2 assimilation rates (Anet) were greater in LT than in HT seedlings below 30 °C, but were greater in HT ...
Danielle A, Way, Rowan F, Sage
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Picea mariana bark: A new source of trans-resveratrol and other bioactive polyphenols

Food Chemistry, 2012
The ethyl acetate soluble fraction obtained from the hot water extract of Picea mariana bark (BS-EAc(f)) has been demonstrated to have anti-inflammatory and antioxidant properties. Thus, in the current study, we isolated and characterised major compounds of this fraction by HPLC, NMR and MS analyses.
Martha-Estrella, García-Pérez, Mariana, Royer, Gaëtan, Herbette, Yves, Desjardins, Roxane, Pouliot, Tatjana, Stevanovic   +5 more
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Regulation of the β-hydroxyacyl ACP dehydratase gene of Picea mariana by alternative splicing

Plant Cell Reports, 2006
The gene for beta-hydroxyacyl ACP dehydratase, a de novo fatty acid biosynthetic enzyme, was cloned from Picea mariana (black spruce) and consists of five exons and four introns. The first intron of the beta-hydroxyacyl ACP dehydratase mRNA is alternatively spliced.
Helen H, Tai, Martin, Williams, Abhinav, Iyengar, Jessica, Yeates, Tannis, Beardmore   +4 more
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CHEMOSYSTEMATIC STUDIES IN THE GENUS PICEA (PINACEAE): II. THE LEAF OIL OF PICEA GLAUCA AND P. MARIANA

Canadian Journal of Botany, 1967
The leaf oils from white and black spruce obtained from different locations in Western and Eastern Canada, Michigan, and Minnesota, have been analyzed by gas liquid chromatography. Both species were found to have a remarkably consistent and distinctive distribution pattern of the leaf oil terpenes. The quantitative variations encountered in samples of
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Species-specific RAPD fingerprints for the closely related Picea mariana and P. rubens

Theoretical and Applied Genetics, 1995
Species-specific molecular markers were designed to assist in the identification of closely related black spruce (Picea mariana [B.S.P.] Mill.) and red spruce (P. rubens Sarg.) in northeastern North America. Trees from six provenances of black spruce and three provenances of red spruce were sampled from outside the sympatric zone.
M, Perron, A G, Gordon, J, Bousquet
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Allelopathic potential of Kalmia angustifolia to black spruce (Picea mariana)

Forest Ecology and Management, 1987
Abstract Effects of water extracts of leaves, root, litter and soil of Kalmia angustifolia were tested on seed germination and primary root and shoot development of black spruce seedlings. Litter and soil extracts were found to be most inhibitory to primary root development.
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Environmental controls of Picea mariana water use in a boreal subarctic peatland

2020
<p>Black spruce (Picea mariana) dominated peat plateaus are an important component of northwestern Canada’s heterogeneousboreal landscape. Threats to these ecosystems, including permafrost thaw and wetland expansion, could impact hydrological fluxes therefore, it is essential to understand the factors affecting the ...
Nia Perron, Christoforos Pappas, Jennifer Baltzer, Katherine Dearborn, Oliver Sonnentag   +4 more
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Fission track mapping of uranium in black spruce (Picea Mariana) twigs

Journal of Radioanalytical and Nuclear Chemistry Articles, 1987
Fission track analysis (FTA) has been used to investigate the biological uptake of uranium. Examination of fission track maps of black spruce twigs (from areas of uranium mineralization and mill tailings) shows uranium to be concentrated in the inner bark while decreasing in the outer bark of the twigs.
M. J. Apps, M. J. M. Duke, B. V. Turner
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Transient expression of the ?-glucuronidase gene in embryogenic callus of Picea mariana following microprojection

Plant Cell Reports, 1991
A microprojection protocol using the DuPont Biolistic(™) particle delivery system and the β-glucuronidase (GUS) reporter gene fused with the 35S promoter of Cauliflower mosaic virus (CaMV) was developed for Picea mariana callus. Comparison of four tungsten microprojectile sizes showed the highest transient gene expression with 1.11μm diameter particles.
L C, Duchesne, P J, Charest
openaire   +2 more sources