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•Allopolyploids represent natural experiments in which DNA sequences from different species are combined into a single nucleus and then coevolve, enabling us to follow the parental genomes, their interactions and evolution over time. Here, we examine the fate of satellite DNA over 5 million yr of divergence in plant genus Nicotiana (family Solanaceae).
•We isolated subtelomeric, tandemly repeated...
To test the influence of a Nicotiana tomentosiformis repetitive sequence (R8.3) on transgene expression in N. sylvestris and in N. sylvestris-N. tomentosiformis hybrids, the R8.3 sequence was placed upstream of a nopaline synthase promoter (NOSpro)-NPTII reporter gene in a T-DNA construct. A number of transgenic N. sylvestris lines were produced and in most, the NPTII gene was expressed. In one line,...
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