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)...
The field performance of genetic containment technologies–considered important for
certain uses of transgenic trees in forestry–are 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 x...
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S, Shevchenko O, Montgomery B, Mohamed R, Wei H, Ma C, Elias A,
VanWormer K, et al. (2007) Genetic
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...
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...