Transformation of wheat with the HMW-GS 1Bx14 gene without markers

Transformation of wheat with the HMW-GS 1Bx14 gene without markers High molecular weight (HMW) glutenin polypeptides are critical contributors to the visco/elastic properties responsible for the processing characteristics and utilizations of wheat flour. In order to improve bread making quality of flour and produce transgenic plants free of selectable markers, a linear DNA construct consisting of a minimal expression cassette with the HMW-GS 1Bx14 gene was transformed into wheat cultivar Mianyang19 by microprojectile bombardment. The transform ants were selected by PCR instead of herbicidal markers. Seven transgenic plants were identified from a total of 1219 transformants, yielding a transformation frequency of 0.28%. An SDS-PAGE analysis confirmed that the 1Bx14 gene was expressed in three T1 seeds of the transgenic plants. Our results demonstrated that it is feasible to obtain marker-free trans-formants using the linear-expression-cassette-transformation approach coupled with PCR selection. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Transformation of wheat with the HMW-GS 1Bx14 gene without markers

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Publisher
Springer Journals
Copyright
Copyright © 2011 by Pleiades Publishing, Ltd.
Subject
Biomedicine; Microbial Genetics and Genomics; Human Genetics ; Animal Genetics and Genomics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S1022795411010066
Publisher site
See Article on Publisher Site

Abstract

High molecular weight (HMW) glutenin polypeptides are critical contributors to the visco/elastic properties responsible for the processing characteristics and utilizations of wheat flour. In order to improve bread making quality of flour and produce transgenic plants free of selectable markers, a linear DNA construct consisting of a minimal expression cassette with the HMW-GS 1Bx14 gene was transformed into wheat cultivar Mianyang19 by microprojectile bombardment. The transform ants were selected by PCR instead of herbicidal markers. Seven transgenic plants were identified from a total of 1219 transformants, yielding a transformation frequency of 0.28%. An SDS-PAGE analysis confirmed that the 1Bx14 gene was expressed in three T1 seeds of the transgenic plants. Our results demonstrated that it is feasible to obtain marker-free trans-formants using the linear-expression-cassette-transformation approach coupled with PCR selection.

Journal

Russian Journal of GeneticsSpringer Journals

Published: Feb 22, 2011

References

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