Index Catalog // ScholarsArchive@OSU

A dynamic leaf gas-exchange strategy is conserved in woody plants under changing ambient CO₂: evidence from carbon isotope discrimination in paleo and CO₂ enrichment studies

Creator:: Voelker, Steven L., Brooks, J. Renée, Meinzer, Frederick C., Anderson, Rebecca, Bader, Martin K.-F., Battipaglia, Giovanna, Becklin, Katie M., Beerling, David, Bert, Didier, Betancourt, Julio L., Dawson, Todd E., Domec, Jean-Christophe, Guyette, Richard P., Körner, Christian, Leavitt, Steven W., Linder, Sune, Marshall, John D., Mildner, Manuel, Ogée, Jérôme, Panyushkina, Irina, Plumpton, Heather J., Pregitzer, Kurt S., Saurer, Matthias, Smith, Andrew R., Siegwolf, Rolf T. W., Stambaugh, Michael C., Talhelm, Alan F., Tardif, Jacques C., Van de Water, Peter K., Ward, Joy K., and Wingate, Lisa
Abstract:: Rising atmospheric [CO₂], cₐ, is expected to affect stomatal regulation of leaf gas-exchange of woody plants, thus influencing energy fluxes as well as carbon (C), water, and nutrient cycling of forests. Researchers have proposed various strategies for stomatal regulation of leaf gas-exchange that include maintaining a constant leaf internal [CO₂],...
Resource Type:: Article
Full Text:: . VOELKER 1 , J . R EN �EE BROOKS 2 , FREDER ICK C . ME INZER 3 , REBECCA ANDERSON4 , MART IN K . - F

Antisense down-regulation of 4CL expression alters lignification, tree growth and saccharification potential of field-grown poplar

Creator:: Voelker, Steven L., Lachenbruch, Barbara, Meinzer, Frederick C., Jourdes, Michael, Ki, Chanyoung, Patten, Ann M., Davin, Laurence B., Lewis, Norman G., Tuskan, Gerald A., Gunter, Lee, Decker, Stephen R., Selig, Michael J., Sykes, Robert, Himmel, Michael E., Kitin, Peter, Shevchenko, Olga, and Strauss, Steven H.
Abstract:: Transgenic down-regulation of the Pt4CL1 gene family encoding 4-coumarate:coenzyme A ligase (4CL) has been reported as a means for reducing lignin content in cell walls and increasing overall growth rates, thereby improving feedstock quality for paper and bioethanol production. Using hybrid poplar (Populus tremula 3 Populus alba), we applied this...
Resource Type:: Article
Full Text:: greenhouse-grown aspen (Li et al., 2003; Hancock et al., 2007, 2008) and Chinese white poplar (Populus

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:: large-scale production (Anterola and Lewis, 2002; Hancock et al., 2007; Coleman et al., 2008b, Voelker

Bordered pit structure and function determine spatial patterns of air-seeding thresholds in xylem of Doulglas-fir (Pseudotsuga menziesii; Pinaceae) trees

Creator:: Domec, Jean-Christophe, Lachenbruch, Barbara, and Meinzer, Frederick C.
Abstract:: The air‐seeding hypothesis predicts that xylem embolism resistance is linked directly to bordered pit functioning. We tested this prediction in trunks, roots, and branches at different vertical and radial locations in young and old trees of Pseudotsuga menziesii. Dimensions of bordered pits were measured from light and scanning electron micrographs,...
Resource Type:: Article
Full Text:: aspiration) as follows. We first calculated the lateral force (F) exerted across the pit membrane by the DP

A comparison of daily water use estimates derived from constant-heat sap-flow probe values and gravimetric measurements in pot-grown saplings.

Creator:: McCulloh, Katherine A., Winter, Klaus, Meinzer, Frederick C., Garcia, Milton, Aranda, Jorge, and Lachenbruch, Barbara
Abstract:: Use of Granier-style heat dissipation sensors to measure sap flow is common in plant physiology, ecology and hydrology. There has been concern that any change to the original Granier design invalidates the empirical relationship between sap flux density and the temperature difference between the probes. Here, we compared daily water...
Resource Type:: Article
Full Text:: recently developed variable length sensors (James et al. vital to understanding hydrologic cycles

Contrasting Hydraulic Strategies in Two Tropical Lianas and Their Host Trees

Creator:: Johnson, Daniel M., Domec, Jean-Christophe, Woodruff, David R., McCulloh, Katherine A., and Meinzer, Frederick C.
Abstract:: • Premise of the Study: Tropical liana abundance has been increasing over the past 40 yr, which has been associated with reduced rainfall. The proposed mechanism allowing lianas to thrive in dry conditions is deeper root systems than co-occurring trees, although we know very little about the fundamental hydraulic physiology...
Resource Type:: Article
Full Text:: tropical forest trees than for lianas ( Andrade et al., 1998 ; Malhi et al., 1999 ; James et al., 2003

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:: laboratory, we measured leaf hydraulic conductance ( K i d as leaf water potential ( f i ) declined for

Do Ray Cells Provide a Pathway for Radial Water Movement in the Stems of Conifer Trees?

Creator:: Barnard, David M., Lachenbruch, Barbara, McCulloh, Katherine A., Kitin, Peter, and Meinzer, Frederick C.
Abstract:: • Premise of the study: The pathway of radial water movement in tree stems presents an unknown with respect to whole-tree hydraulics. Radial profi les have shown substantial axial sap fl ow in deeper layers of sapwood (that may lack direct connection to transpiring leaves), which suggests the existence of...
Resource Type:: Article
Full Text:: simple tools. Taunton Press, Newtown, Connecticut, USA. JAMES , S. A. , F. C

Xylem hydraulic safety margins in woody plants: coordination of stomatal control of xylem tension with hydraulic capacitance

Creator:: Meinzer, Frederick C., Johnson, Daniel M., Lachenbruch, Barbara, McCulloh, Katherine A., and Woodruff, David R.
Abstract:: 1. The xylem pressure inducing 50% loss of hydraulic conductivity due to embolism widely used for comparisons of xylem vulnerability among species and across aridity However, despite its utility as an index of resistance to catastrophic xylem failure drought, P5o may have no special physiological relevance in the context of...
Resource Type:: Article

Above- and belowground controls on water use by trees of different wood types in an eastern US deciduous forest

Creator:: Meinzer, Frederick C., Woodruff, David R., Eissenstat, David M., Lin, Henry S., Adams, Thomas S., and McCulloh, Katherine A.
Abstract:: Stomata control tree transpiration by sensing and integrating environmental signals originating in the atmosphere and soil, and co-occurring species may differ in inherent stomatal sensitivity to these above- and belowground signals and in the types of signals to which they respond. Stomatal responsiveness to environmental signals is likely to differ...
Resource Type:: Article
Full Text:: reference sensor, each 10 mm in length at the probe tip (James et al. 2002), were installed at distances

ScholarsArchive@OSU

A dynamic leaf gas-exchange strategy is conserved in woody plants under changing ambient CO₂: evidence from carbon isotope discrimination in paleo and CO₂ enrichment studies

Antisense down-regulation of 4CL expression alters lignification, tree growth and saccharification potential of field-grown poplar

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

Bordered pit structure and function determine spatial patterns of air-seeding thresholds in xylem of Doulglas-fir (Pseudotsuga menziesii; Pinaceae) trees

A comparison of daily water use estimates derived from constant-heat sap-flow probe values and gravimetric measurements in pot-grown saplings.

Contrasting Hydraulic Strategies in Two Tropical Lianas and Their Host Trees

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

Do Ray Cells Provide a Pathway for Radial Water Movement in the Stems of Conifer Trees?

Xylem hydraulic safety margins in woody plants: coordination of stomatal control of xylem tension with hydraulic capacitance

Above- and belowground controls on water use by trees of different wood types in an eastern US deciduous forest

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