NDLI: Genome Rearrangements in Maize Induced by Alternative Transposition of Reversed Ac/Ds Termini

Content Provider	PubMed Central
Author	Yu, Chuanhe Zhang, Jianbo Peterson, Thomas
Editor	Copenhaver, G. P.
Copyright Year	2011
Abstract	Alternative transposition can induce genome rearrangements, including deletions, inverted duplications, inversions, and translocations. To investigate the types and frequency of the rearrangements elicited by a pair of reversed Ac/Ds termini, we isolated and analyzed 100 new mutant alleles derived from two parental alleles that both contain an intact Ac and a fractured Ac (fAc) structure at the maize p1 locus. Mutants were characterized by PCR and sequencing; the results show that nearly 90% (89/100) of the mutant alleles represent structural rearrangements including deletions, inversions, translocations, or rearrangement of the intertransposon sequence (ITS). Among 37 deletions obtained, 20 extend into the external flanking sequences, while 17 delete portions of the intertransposon sequence. Interestingly, one deletion allele that contains only a single nucleotide between the retained Ac and fAc termini is not competent for further alternative transposition events. We propose a new model for the formation of intertransposon deletions through insertion of reversed transposon termini into sister-chromatid sequences. These results document the types and frequencies of genome rearrangements induced by alternative transposition of reversed Ac/Ds termini in maize.
Related Links	http://dx.doi.org/10.1534/genetics.111.126847
Ending Page	67
Page Count	9
Starting Page	59
File Format	PDF
ISSN	00166731
e-ISSN	19432631
Journal	Genetics
Issue Number	1
Volume Number	188
Language	English
Publisher	Genetics Society of America
Publisher Date	2011-05-01
Access Restriction	Open
Rights Holder	Genetics Society of America
Subject Keyword	Genetics Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Genetics

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