Index Catalog // ScholarsArchive@OSU

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,...
Resource Type:: Article
Full Text:: Agrobacterium rhizogenes Kyung-Hwan Han, Milton P. Gordon, and Steven H. Strauss Abstract: Many species of

Bacterio-opsin gene overexpression fails to elevate fungal disease resistance in transgenic poplar (Populus)

Creator:: Mohamed, Rozi, Meilan, Richard, Ostry, Michael E., Michler, Charles H., and Strauss, Steven H.
Abstract:: Overexpression of the bacterio-opsin (bO) gene in tobacco had previously been shown to induce hypersensitiveresponse- like lesions, increase viral and bacterial disease resistance, and stimulate pathogenesis-related gene expression. To see if this gene enhanced resistance to fungal pathogens of poplar, we generated a total of 35 transgenic lines in two...
Resource Type:: Article
Full Text:: H. Michler, and Steven H. Strauss Abstract: Overexpression of the bacterio-opsin (bO) gene in

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

MaCathleenForestryEarlyBudBreak.pdf

Creator:: Yordanov, Yordan S., Ma, Cathleen, Strauss, Steven H., and Busov, Victor B.
Abstract:: Trees from temperate latitudes transition between growth and dormancy to survive dehydration and freezing stress during winter months. We employed activation tagging to isolate a dominant mutation affecting release from dormancy, and identified the corresponding gene EARLY BUD-BREAK 1 (EBB1). We demonstrate through positioning of the tag, expression analysis, and...
Full Text:: dormancy in poplar trees Yordan S. Yordanov 1 , Cathleen Ma 2 , Steven H. Strauss 2 and Victor B

HoweGlennForestEcosystSocExtensiveTranscriptomeChanges.pdf

Creator:: Howe, Glenn T., Horvath, David P., Dharmawardhana, Palitha, Priest, Henry D., Mockler, Todd C., and Strauss, Steven H.
Abstract:: To survive winter, many perennial plants become endodormant, a state of suspended growth maintained even in favorable growing environments. To understand vegetative bud endodormancy, we collected paradormant, endodormant, and ecodormant axillary buds from Populus trees growing under natural conditions. Of 44,441 Populus gene models analyzed using NimbleGen microarrays, we found...
Full Text:: University of New Jersey, USA *Correspondence: Steven H. Strauss steve.strauss@oregonstate.edu †These

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

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

KlockoAmyForestEcosystemsSocietyBt-Cry3AaTransgene.pdf

Creator:: Klocko, Amy L., Meilan, Richard, James, Rosalind R., Viswanath, Venkatesh, Ma, Cathleen, Payne, Peggy, Miller, Lawrence, Skinner, Jeffrey S., Oppert, Brenda, Cardineau, Guy A., and Strauss, Steven H.
Abstract:: The stability and value of transgenic pest resistance for promoting tree growth are poorly understood. These data are essential for determining if such trees could be beneficial to commercial growers in the face of substantial regulatory and marketing costs. We investigated growth and insect resistance in hybrid poplar expressing the...
Full Text:: , Jeffrey S. Skinner, Brenda Oppert, Guy A. Cardineau, and Steven H. Strauss Abstract: The stability and

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

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

ScholarsArchive@OSU

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

Bacterio-opsin gene overexpression fails to elevate fungal disease resistance in transgenic poplar (Populus)

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

MaCathleenForestryEarlyBudBreak.pdf

HoweGlennForestEcosystSocExtensiveTranscriptomeChanges.pdf

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

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

KlockoAmyForestEcosystemsSocietyBt-Cry3AaTransgene.pdf

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

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

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