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...
The field performance of genetic containment technologies–considered important for certain uses of transgenic trees in forestry–is poorly known. We tested the efficiency of a barnase gene driven by the TA29 tapetum-dominant promoter for influencing growth rate and inducing male sterility in a field trial of transgenic hybrid poplar (Populus tremula × Populus...
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...
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...