Index Catalog // ScholarsArchive@OSU

Evaluation of transgenes for stress tolerance, lignin modification, and growth enhancement in poplar

Creator:: Elias, Ani Anna
Abstract:: We evaluated genes previously identified from a large scale functional genomics screen for their potential value to help enhance carbon sequestration in planted trees. We used poplar as a model tree species because of its abundant genetic variation, ease of gene transfer, and availability of large databases for genomic, anatomical,...
Resource Type:: Masters Thesis
Full Text:: Poplar. Abstract approved: Steven H. Strauss We evaluated genes previously identified from a

Growth, morphology, and in vitro development of transgenic poplars with RNAi-inhibited PtDDM1-1/2 gene expression

Creator:: Zhu, Ruoqing
Abstract:: Epigenetic mechanisms are important for control of plant development, and may play a particularly important role in trees given their long life cycles and distinctive and stable tissue types. To help understand the role of epigenetics in tree development, we produced transgenic poplars with reduced activity of the DDM1 genes,...
Resource Type:: Masters Thesis
Full Text:: Expression Abstract approved: _______________________________________________________________ Steven

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

Independent effects of habitat loss and fragmentation on pollination : tropical forest fragmentation alters hummingbird movements and pollination dynamics

Creator:: Hadley, Adam S.
Abstract:: A growing body of work reveals that animal-mediated pollination is negatively affected by anthropogenic disturbance. Landscape-scale disturbance results in two often inter-related processes: (1) habitat loss, and (2) disruptions of habitat configuration (i.e. fragmentation). Understanding the relative effects of such processes is critical in designing effective management strategies to limit...
Resource Type:: Dissertation
Full Text:: Jorge Chacon, Karen Dewolfe, Javier Gutierrez Illan, Steven Gullage, Matthew Hadley, Evan Jackson, Urs

Causes and implications of the correlation between forest productivity and tree mortality rates

Creator:: Stephenson, Nathan L., van Mantgem, Phillip J., Bunn, Andrew G., Bruner, Howard, Harmon, Mark E., O'Connell, Kari B., Urban, Dean L., and Franklin, Jerry F.
Abstract:: At global and regional scales, tree mortality rates are positively correlated with forest net primary productivity (NPP). Yet causes of the correlation are unknown, in spite of potentially profound implications for our understanding of environmental controls of forest structure and dynamics and, more generally, our understanding of broad-scale environmental controls...
Resource Type:: Article
Full Text:: proximate causes of differences in community-wide mortality rates (white and gray bars represent

Decomposition of heterogeneous organic matter and its long-term stabilization in soils

Creator:: Sierra, Carlos A., Harmon, Mark E., and Perakis, Steven S.
Abstract:: Soil organic matter is a complex mixture of material with heterogeneous biological, physical, and chemical properties. Decomposition models represent this heterogeneity either as a set of discrete pools with different residence times or as a continuum of qualities. It is unclear though, whether these two different approaches yield comparable predictions...
Resource Type:: Article
Full Text:: its long-term stabilization in soils CARLOS A. SIERRA,1,2,4 MARK E. HARMON,1 AND STEVEN S. PERAKIS3

Avian Species Richness in Relation to Intensive Forest Management Practices in Early Seral Tree Plantations

Creator:: Jones, Jay E., Kroll, Andrew J., Giovanini, Jack, Duke, Steven D., Ellis, Tana M., and Betts, Matthew G.
Abstract:: •Background: Managers of landscapes dedicated to forest commodity production require information about how practices influence biological diversity. Individual species and communities may be threatened if management practices truncate or simplify forest age classes that are essential for reproduction and survival. For instance, the degradation and loss of complex diverse forest...
Resource Type:: Article
Full Text:: Giovanini1, Steven D. Duke1, Tana M. Ellis3, Matthew G. Betts3 1 Statistics, Mathematics, and Operations

Post-harvest establishment influences ANPP, soil C and DOC export in complex mountainous terrain

Creator:: Peterson, Fox S.
Abstract:: The link between aboveground net primary productivity (ANPP) and resource gradients generated by complex terrain (solar radiation, nutrients, and moisture) has been established in the literature. Belowground ecosystem stocks and functions, such as soil organic carbon (SOC), dissolved organic carbon (DOC), and belowground productivity have also been related to the...
Resource Type:: Dissertation

Dynamic DNA cytosine methylation in the Populus trichocarpa genome: tissue-level variation and relationship to gene expression

Creator:: Vining, Kelly J., Pomraning, Kyle R., Wilhelm, Larry J., Priest, Henry D., Pellegrini, Matteo, Mockler, Todd C., Freitag, Michael, and Strauss, Steven H.
Abstract:: Background: DNA cytosine methylation is an epigenetic modification that has been implicated in many biological processes. However, large-scale epigenomic studies have been applied to very few plant species, and variability in methylation among specialized tissues and its relationship to gene expression is poorly understood. Results: We surveyed DNA methylation from...
Resource Type:: Article
Full Text:: Wilhelm4, Henry D Priest5,6, Matteo Pellegrini7, Todd C Mockler5,6,8, Michael Freitag3,6 and Steven H

Estimating Canopy Cover from Standard Forest Inventory Measurements in Western Oregon

Creator:: McIntosh, Anne C.S., Gray, Andrew N., and Garman, Steven L.
Abstract:: Reliable measures of canopy cover are important in the management of public and private forests. However, direct sampling of canopy cover is both labor- and time-intensive. More efficient methods for estimating percent canopy cover could be empirically derived relationships between more readily measured stand attributes and canopy cover or, alternatively,...
Resource Type:: Article
Full Text:: Measurements in Western Oregon Anne C.S. McIntosh, Andrew N. Gray, and Steven L. Garman Abstract: Reliable

ScholarsArchive@OSU

Evaluation of transgenes for stress tolerance, lignin modification, and growth enhancement in poplar

Growth, morphology, and in vitro development of transgenic poplars with RNAi-inhibited PtDDM1-1/2 gene expression

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

Independent effects of habitat loss and fragmentation on pollination : tropical forest fragmentation alters hummingbird movements and pollination dynamics

Causes and implications of the correlation between forest productivity and tree mortality rates

Decomposition of heterogeneous organic matter and its long-term stabilization in soils

Avian Species Richness in Relation to Intensive Forest Management Practices in Early Seral Tree Plantations

Post-harvest establishment influences ANPP, soil C and DOC export in complex mountainous terrain

Dynamic DNA cytosine methylation in the Populus trichocarpa genome: tissue-level variation and relationship to gene expression

Estimating Canopy Cover from Standard Forest Inventory Measurements in Western Oregon

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