NDLI: Functional Analysis of Two Matrix Attachment Region (MAR) Elements in Transgenic Maize Plants

Content Provider	Springer Nature Link
Author	Sidorenko, Lyudmila Bruce, Wesley Maddock, Sheila Tagliani, Laura Li, Xianggan Daniels, Michael Peterson, Thomas
Copyright Year	2003
Abstract	Matrix attachment regions (MARs) are binding sites for nuclear scaffold proteins in vitro, and are proposed to mediate the attachment of chromatin to the nuclear scaffold in vivo. Previous reports suggest that MAR elements may stabilize transgene expression. Here, we tested the effects of two maize MAR elements (P-MAR from the P1-rr gene, and Adh1-MAR from the adh1 gene) on the expression of a gusA reporter gene driven by three different promoters: the maize p1 gene promoter, a wheat peroxidase (WP) gene promoter, or a synthetic promoter (Rsyn7). The inclusion of P-MAR or Adh1-MAR on P::GUS transgene constructs did not reduce variation in the levels of GUS activity among independent transformation events, nor among the progeny derived from each event. The Adh1-MAR element did not affect GUS expression driven by the WP promoter, but did modify the spatial pattern of expression of the Rsyn7::GUS transgene. These results indicate that, in transgenic maize plants, the effects of MAR elements can vary significantly depending upon the promoter used to drive the transgene.
Starting Page	137
Ending Page	154
Page Count	18
File Format	PDF
ISSN	09628819
Journal	Transgenic Research
Volume Number	12
Issue Number	2
e-ISSN	15739368
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2003-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Human Genetics Plant Sciences Animal Anatomy / Morphology / Histology
Content Type	Text
Resource Type	Article
Subject	Genetics Animal Science and Zoology Biotechnology Agronomy and Crop Science

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