Index Catalog // ScholarsArchive@OSU

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

High frequency transformation of cottonwoods (genus Populus) by Agrobacterium rhizogene

Creator:: Han, Kyung-Hwan, Gordon, Milton P., and Strauss, Steven H.
Abstract:: Many species of Populus, particularly cottonwoods of sections Aigeiros and Tacamahaca, remain recalcitrant to genetic transformation. We demonstrate that transgenic trees can be readily produced in several poplar genotypes using wild-type Agrobacterium rhizogenes. Hairy roots were produced in a variety of clones that included Populus trichocarpa Torr. & A. Gray,...
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Full Text:: Agrobacterium rhizogenes Kyung-Hwan Han, Milton P. Gordon, and Steven H. Strauss Abstract: Many species of

Down-regulation of gibberellic acid in poplar has negligible effects on host-plant suitability and insect pest response

Creator:: Buhl, Christine, Strauss, Steven H., and Lindroth, Richard L.
Abstract:: Abstract Endogenous levels and signaling of gibberellin plant hormones such as gibberellic acid (GA) have been genetically down-regulated to create semi-dwarf varieties of poplar. The potential benefits of semi-dwarf stature include reduced risk of wind damage, improved stress tolerance, and improved wood quality. Despite these benefits, modification of growth traits...
Resource Type:: Article
Full Text:: suitability and insect pest 1 response 2 3 Christine Buhl, Steven H. Strauss and Richard L. Lindroth 4

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:: Alters Lignification, Tree Growth, and Saccharification Potential of Field-Grown Poplar1[W][OA] Steven L

FT overexpression induces precocious flowering and normal reproductive development in Eucalyptus

Creator:: Klocko, Amy L., Ma, Cathleen, Robertson, Sarah, Esfandiari, Elahe, Nilsson, Ove, and Strauss, Steven H.
Abstract:: Eucalyptus trees are among the most important species for industrial forestry worldwide. However, as with most forest trees, flowering does not begin for one to several years after planting which can limit the rate of conventional and molecular breeding. To speed flowering, we transformed a Eucalyptus grandis × urophylla hybrid...
Resource Type:: Article
Full Text:: Steven H. Strauss1,* 1Department Forest Ecosystems & Society, Oregon State University, Corvallis, OR

Epigenetic regulation of adaptive responses of forest tree species to the environment

Creator:: Braeutigam, Katharina, Vining, Kelly J., Lafon-Placette, Clement, Fossdal, Carl G., Mirouze, Marie, Gutierrez Marcos, Jose, Fluch, Silvia, Fernandez Fraga, Mario, Angeles Guevara, M., Abarca, Dolores, Johnsen, Oystein, Maury, Stephane, Strauss, Steven H., Campbell, Malcolm M., Rohde, Antje, Diaz-Sala, Carmen, and Cervera, Maria-Teresa
Abstract:: Epigenetic variation is likely to contribute to the phenotypic plasticity and adaptative capacity of plant species, and may be especially important for long-lived organisms with complex life cycles, including forest trees. Diverse environmental stresses and hybridization/polyploidization events can create reversible heritable epigenetic marks that can be transmitted to subsequent generations...
Resource Type:: Article
Full Text:: environment Katharina Br€autigam1, Kelly J. Vining2, Cl�ement Lafon-Placette3, Carl G. Fossdal4, Marie

Green Revolution Trees: Semidwarfism Transgenes Modify Gibberellins, Promote Root Growth, Enhance Morphological Diversity, and Reduce Competitiveness in Hybrid Poplar

Creator:: Elias, Ani A., Busov, Victor B., Kosola, Kevin R., Ma, Cathleen, Etherington, Elizabeth, Shevchenko, Olga, Gandhi, Harish, Pearce, David W., Rood, Stewart B., and Strauss, Steven H.
Abstract:: Semidwarfism has been used extensively in row crops and horticulture to promote yield, reduce lodging, and improve harvest index, and it might have similar benefits for trees for short-rotation forestry or energy plantations, reclamation, phytoremediation, or other applications. We studied the effects of the dominant semidwarfism transgenes GA Insensitive (GAI)...
Resource Type:: Article
Full Text:: , Elizabeth Etherington, Olga Shevchenko, Harish Gandhi, David W. Pearce, Stewart B. Rood, and Steven H

Methylome reorganization during in vitro dedifferentiation and regeneration of Populus trichocarpa

Creator:: Vining, Kelly, Pomraning, Kyle R., Wilhelm, Larry J., Ma, Cathleen, Pellegrini, Matteo, Di, Yanming, Mockler, Todd C., Freitag, Michael, and Strauss, Steven H.
Abstract:: Background: Cytosine DNA methylation (5mC) is an epigenetic modification that is important to genome stability and regulation of gene expression. Perturbations of 5mC have been implicated as a cause of phenotypic variation among plants regenerated through in vitro culture systems. However, the pattern of change in 5mC and its functional...
Resource Type:: Article
Full Text:: , Cathleen Ma1, Matteo Pellegrini5, Yanming Di6, Todd C Mockler7, Michael Freitag2,3,8 and Steven H

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

Contrasting patterns of evolution following whole genome versus tandem duplication events in Populus

Creator:: Rodgers-Melnick, Eli, Mane, Shrinivasrao P., Dharmawardhana, Palitha, Slavov, Gancho T., Crasta, Oswald R., Strauss, Steven H., Brunner, Amy M., and DiFazio, Stephen P.
Abstract:: Comparative analysis of multiple angiosperm genomes has implicated gene duplication in the expansion and diversification of many gene families. However, empirical data and theory suggest that whole-genome and small-scale duplication events differ with respect to the types of genes preserved as duplicate pairs. We compared gene duplicates resulting from a...
Resource Type:: Article
Full Text:: . Mane,2,3 Palitha Dharmawardhana,4 Gancho T. Slavov,1,5 Oswald R. Crasta,2,6 Steven H. Strauss,4 Amy M

ScholarsArchive@OSU

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

High frequency transformation of cottonwoods (genus Populus) by Agrobacterium rhizogene

Down-regulation of gibberellic acid in poplar has negligible effects on host-plant suitability and insect pest response

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

FT overexpression induces precocious flowering and normal reproductive development in Eucalyptus

Epigenetic regulation of adaptive responses of forest tree species to the environment

Green Revolution Trees: Semidwarfism Transgenes Modify Gibberellins, Promote Root Growth, Enhance Morphological Diversity, and Reduce Competitiveness in Hybrid Poplar

Methylome reorganization during in vitro dedifferentiation and regeneration of Populus trichocarpa

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

Contrasting patterns of evolution following whole genome versus tandem duplication events in Populus

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