Expression in anthers of two genes encoding Brassica oleracea transmembrane channel proteins

Expression in anthers of two genes encoding Brassica oleracea transmembrane channel proteins Screening of an anther cDNA expression library resulted in the isolation of two almost identical cDNA clones, termed mipA and mipB, showing homology with sequences encoding transmembrane channel proteins from the MIP family. Both clones were expressed in several tissues, but not in pollen. MipA was preferentially expressed in the surrounding sporophytic tissues of stamens. Anthers subjected to drought were induced to accumulate even more mip transcripts, which was entirely due to higher mipA gene expression. On basis of isolation procedures, sequence homology and drought inducibility of mipA we conclude that the encoded proteins probably are constituents of the pollen coat and are aquaporins. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Expression in anthers of two genes encoding Brassica oleracea transmembrane channel proteins

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Publisher
Kluwer Academic Publishers
Copyright
Copyright © 1997 by Kluwer Academic Publishers
Subject
Life Sciences; Biochemistry, general; Plant Sciences; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1023/A:1005828325425
Publisher site
See Article on Publisher Site

Abstract

Screening of an anther cDNA expression library resulted in the isolation of two almost identical cDNA clones, termed mipA and mipB, showing homology with sequences encoding transmembrane channel proteins from the MIP family. Both clones were expressed in several tissues, but not in pollen. MipA was preferentially expressed in the surrounding sporophytic tissues of stamens. Anthers subjected to drought were induced to accumulate even more mip transcripts, which was entirely due to higher mipA gene expression. On basis of isolation procedures, sequence homology and drought inducibility of mipA we conclude that the encoded proteins probably are constituents of the pollen coat and are aquaporins.

Journal

Plant Molecular BiologySpringer Journals

Published: Sep 29, 2004

References

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