Expression pattern of transcripts encoding water channel-like proteins in Norway spruce (Picea abies)

Expression pattern of transcripts encoding water channel-like proteins in Norway spruce (Picea... With the aim of identifying cells and tissues with high expression of aquaporins (water channels) or homologous genes in Norway spruce (Picea abies), we report the expression patterns of such transcripts in seedlings, in roots of various ages, and in needles. In situ hybridization experiments with a conserved area of a tonoplast intrinsic protein (TIP) gene from P. abies gave high expression signals in differentiating vascular tissues and in the columella cells of the seedling root cap. High-staining signals were also seen in guard cells and in the bundle sheath cells of needles. Moreover, a slightly increased staining signal was seen in cells forming lateral roots as well as in adventitious roots formed from hypocotyl cuttings. By using PCR-based procedures we also identified a full-length aquaporin-like cDNA (mipr) from roots of two-week old seedlings. Sequence homology analysis of the gene suggests that it belongs to the TIP subgroup within the large MIP (major intrinsic protein) family. A phylogenetic analysis of the plant MIP family, including both plasmamembrane (PIP) and tonoplast intrinsic protein (TIP) from Picea, suggests that MIP subgroups evolved already 330 million years ago, as this is the dating of conifer and angiosperm divergence. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Expression pattern of transcripts encoding water channel-like proteins in Norway spruce (Picea abies)

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Publisher
Kluwer Academic Publishers
Copyright
Copyright © 2001 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:1010611605142
Publisher site
See Article on Publisher Site

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