Improved efficiency for T-DNA-mediated transformation and plasmid rescue inArabidopsis thaliana

1993 ◽  
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pp. 621-628 ◽  
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E. T. Palva
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1992 ◽  
Vol 20 (1) ◽  
pp. 61-70 ◽  
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George N. Rudenko ◽  
Paul P. Dijkwel ◽  
Mark J. J. van Haaren ◽  
Pieter B. F. Ouwerkerk ◽  
...  

Nature ◽  
1980 ◽  
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Michael Wigler

2009 ◽  
Vol 2009 (4) ◽  
pp. pdb.prot5199-pdb.prot5199 ◽  
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G. M. Rubin

1992 ◽  
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June I. Medford

Gene ◽  
1996 ◽  
Vol 168 (2) ◽  
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Theodore Friedmann
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1984 ◽  
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Genetics ◽  
2000 ◽  
Vol 155 (1) ◽  
pp. 349-359 ◽  
Author(s):  
Vera Gorbunova ◽  
Avraham A Levy

Abstract The mechanism of transposition of the maize Ac/Ds elements is not well understood. The true transposition intermediates are not known and it has not been possible to distinguish between excision models involving 8-bp staggered cuts or 1-bp staggered cuts followed by hairpin formation. In this work, we have analyzed extrachromosomal excision products to gain insight into the excision mechanism. Plasmid rescue was used to demonstrate that Ds excision is associated with the formation of circular molecules. In addition, we present evidence for the formation of linear extrachromosomal species during Ds excision. Sequences found at the termini of circular and linear elements showed a broad range of nucleotide additions or deletions, suggesting that these species are not true intermediates. Additional nucleotides adjacent to the termini in extrachromosomal elements were compared to the sequence of the original donor site. This analysis showed that: (1) the first nucleotide adjacent to the transposon end was significantly more similar to the first nucleotide flanking the element in the donor site than to a random sequence and (2) the second and farther nucleotides did not resemble the donor site. The implications of these findings for excision models are discussed.


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