Index Catalog // ScholarsArchive@OSU

Effects of release from suppression on wood functional characteristics in young Douglas-fir and western hemlock

Creator:: Renninger, Heidi J., Gartner, Barbara L., and Meinzer, Frederick C.
Abstract:: Little is known of wood properties in trees that were initially suppressed and subsequently released from suppression. The purpose of this study was to assess differences in growth ring width, specific conductivity (Ks), tracheid dimensions, moisture content, and wood density in suppressed Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) and western hemlock...
Resource Type:: Article
Full Text:: functional characteristics in young Douglas-fir and western hemlock Heidi J. Renninger, Barbara L. Gartner

Transpiration-induced axial and radial tension gradients in trunks of Douglas-fir trees

Creator:: Domec, Jean-Christophe, Meinzer, Frederick C., Gartner, Barbara L., and Woodruff, D.
Abstract:: We determined the axial and radial xylem tension gradients in trunks of young Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) trees. Axial specific conductivity (ks-a) and sap flux density (Js) were measured at four consecutive depths within the sapwood at a stem height of 1 m. By definition, at a given position...
Resource Type:: Article

Tree-ring stable isotopes record the impact of a foliar fungal pathogen on CO₂ assimilation and growth in Douglas-fir

Creator:: Saffell, Brandy J., Meinzer, Frederick C., Voelker, Steven L., Shaw, David C., Brooks, J. Renée, Lachenbruch, Barbara, and McKay, Jennifer
Abstract:: Swiss needle cast (SNC) is a fungal disease of Douglas-fir (Pseudotsuga menziesii) that has recently become prevalent in coastal areas of the Pacific Northwest. We used growth measurements and stable isotopes of carbon and oxygen in tree-rings of Douglas-fir and a non-susceptible reference species (western hemlock, Tsuga heterophylla) to evaluate...
Resource Type:: Article
Full Text:: assimilation and growth in Douglas-fir Brandy J. Saffell1, Frederick C. Meinzer2, Steven L. Voelker3, David C

Seasonal carbohydrate dynamics and growth in Douglas-fir trees experiencing chronic, fungal-mediated reduction in functional leaf area

Creator:: Saffell, Brandy J., Meinzer, Frederick C., Woodruff, David R., Shaw, David C., Voelker, Steven L., Lachenbruch, Barbara, and Falk, Kristen
Abstract:: Stored non-structural carbohydrates (NSCs) could play an important role in tree survival in the face of a changing climate and associated stress-related mortality. We explored the effects of the stomata-blocking and defoliating fungal disease called Swiss needle cast on Douglas-fir carbohydrate reserves and growth to evaluate the extent to which...
Resource Type:: Article

Impacts of tree height on leaf hydraulic architecture and stomatal control in Douglas-fir

Creator:: Woodruff, David R., McCulloh, Katherine A., Warren, Jeffrey M., Meinzer, Frederick C., and Lachenbruch, Barbara
Abstract:: This study investigated the mechanisms involved in the regulation of stomatal closure in Douglas-fir and evaluated the potential impact of compensatory adjustments in response to increasing tree height upon these mechanisms. In the laboratory, we measured leaf hydraulic conductance (Kleaf) as leaf water potential (Yl) declined for comparison with in...
Resource Type:: Article
Full Text:: Douglas-fir DAVID R. WOODRUFP2, KATHERINE A. MCCULLOH23, JEFFREY M. WARREN', FREDERICK C. MEINZER1

Height-related trends in leaf xylem anatomy and shoot hydraulic characteristics in a tall conifer: safety versus efficiency in foliar water transport

Creator:: Woodruff, D. R., Meinzer, Frederick C., and Lachenbruch, Barbara
Abstract:: • Hydraulic vulnerability of Douglas-fir (Pseudotsuga menziesii) branchlets decreases with height, allowing shoots at greater height to maintain hydraulic conductance (Kshoot) at more negative leaf water potentials (Ψl). • To determine the basis for this trend shoot hydraulic and tracheid anatomical properties of foliage from the tops of Douglas-fir trees...
Resource Type:: Article
Full Text:: from the tops of Douglas-fir trees were analysed along a height gradient from 5 to 55 m. • Values of Ψl

Reduced wood stiffness and strength, and altered stem form, in young antisense 4CL transgenic poplars with reduced lignin contents

Creator:: Voelker, S. L., Lachenbruch, Barbara, Meinzer, Frederick C., and Strauss, S. H.
Abstract:: • Reduced lignin content in perennial crops has been sought as a means to improve biomass processability for paper and biofuels production, but it is unclear how this could affect wood properties and tree form. • Here, we studied a nontransgenic control and 14 transgenic events containing an antisense 4-coumarate:coenzyme...
Resource Type:: Article
Full Text:: lignin contents Steven L. Voelker 1, Barbara Lachenbruch 1, Frederick C. Meinzer2 and Steven H

Drivers of radial growth and carbon isotope discrimination of bur oak (Quercus macrocarpa Michx.) across continental gradients in precipitation, vapour pressure deficit and irradiance

Creator:: Voelker, Steven L., Meinzer, Frederick C., Lachenbruch, Barbara, Brooks, J. Renee, and Guyette, Richard P.
Abstract:: Tree-ring characteristics are commonly used to reconstruct climate variables, but divergence from the assumption of a single biophysical control may reduce the accuracy of these reconstructions. Here, we present data from bur oaks (Quercus macrocarpa Michx.) sampled within and beyond the current species bioclimatic envelope to identify the primary environmental...
Resource Type:: Article
Full Text:: deficit and irradiance Steven L. Voelker1, Frederick C. Meinzer2, Barbara Lachenbruch3, J. Renée Brooks4

Hydraulic architecture of two species differing in wood density: opposing strategies in co-occurring tropical pioneer treespce_2421 116..

Creator:: McCulloh, Katherine A., Johnson, Daniel M., Meinzer, Frederick C., Voelker, Steven L., Lachenbruch, Barbara, and Domec, Jean-Christophe
Abstract:: Co-occurring species often have different strategies for tolerating daily cycles of water stress. One underlying parameter that can link together the suite of traits that enables a given strategy is wood density. Here we compare hydraulic traits of two pioneer species from a tropical forest in Panama that differ in...
Resource Type:: Article
Full Text:: KATHERINE A. MCCULLOH1, DANIEL M. JOHNSON2, FREDERICK C. MEINZER3, STEVEN L. VOELKER4, BARBARA LACHENBRUCH1

Tyloses and phenolic deposits in xylem vessels impede water transport in low-lignin transgenic poplars: a study by cryo-fluorescence microscopy

Creator:: Kitin, Peter, Voelker, Steven L., Meinzer, Frederick C., Beeckman, Hans, Strauss, Steven H., and Lachenbruch, Barbara
Abstract:: Of 14 transgenic poplar genotypes (Populus tremula × Populus alba) with antisense 4-coumarate:coenzyme A ligase that were grown in the field for 2 years, five that had substantial lignin reductions also had greatly reduced xylem-specific conductivity compared with that of control trees and those transgenic events with small reductions in...
Resource Type:: Article
Full Text:: ] Peter Kitin*, Steven L. Voelker, Frederick C. Meinzer, Hans Beeckman, Steven H. Strauss, and Barbara

ScholarsArchive@OSU

Effects of release from suppression on wood functional characteristics in young Douglas-fir and western hemlock

Transpiration-induced axial and radial tension gradients in trunks of Douglas-fir trees

Tree-ring stable isotopes record the impact of a foliar fungal pathogen on CO₂ assimilation and growth in Douglas-fir

Seasonal carbohydrate dynamics and growth in Douglas-fir trees experiencing chronic, fungal-mediated reduction in functional leaf area

Impacts of tree height on leaf hydraulic architecture and stomatal control in Douglas-fir

Height-related trends in leaf xylem anatomy and shoot hydraulic characteristics in a tall conifer: safety versus efficiency in foliar water transport

Reduced wood stiffness and strength, and altered stem form, in young antisense 4CL transgenic poplars with reduced lignin contents

Drivers of radial growth and carbon isotope discrimination of bur oak (Quercus macrocarpa Michx.) across continental gradients in precipitation, vapour pressure deficit and irradiance

Hydraulic architecture of two species differing in wood density: opposing strategies in co-occurring tropical pioneer treespce_2421 116..

Tyloses and phenolic deposits in xylem vessels impede water transport in low-lignin transgenic poplars: a study by cryo-fluorescence microscopy

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