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Effects of Ri TL-DNA from Agrobacterium rhizogenes and the inhibitors of polyamine synthesis on growth, floral development, sexual organogenesis and polyamine metabolism in tobacco



Effects of Ri TL-DNA from Agrobacterium rhizogenes and the inhibitors of polyamine synthesis on growth, floral development, sexual organogenesis and polyamine metabolism in tobacco



Plant Science Limerick 80(1-2): 131-144



Our recent work associated the phenotypic alterations caused by the Ri TL-DNA (root-inducing, left-hand, transferred DNA) from Agrobacterium rhizogenes with a general decrease in the accumulation of polyamines and their derivatives and showed that irreversible and specific inhibition of putrescine biosynthesis causes a phenotype similar to that attributed to the Ri TL-DNA. In this review we report recent data supporting a correlation between the degree of expression of the transformed phenotype due to the root-inducing, left-hand, transferred DNA and inhibition of polyamine accumulation, strongly suggesting that genes carried by the root-inducing, transferred DNA may act through interference with polyamine production via the ornithine pathway.

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Accession: 002089184

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DOI: 10.1016/0168-9452(91)90278-g


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