Three classes of proteinase inhibitor gene have distinct but overlapping patterns of expression in Pisum sativum plants

Three classes of proteinase inhibitor gene have distinct but overlapping patterns of expression... Genes representative of three gene classes encoding proteinase inhibitor proteins, with distinct spatial expression patterns, were isolated and characterized from Pisum.Under standard plant growth conditions, one class is expressed exclusively in seeds, whereas the other two make minor contributions to seed inhibitor proteins but are also expressed in other organs, predominantly in root endodermal and floral reproductive tissues. Two of the gene classes contain few genes and are genetically linked at the Tri locus, whereas the third class displays complex hybridization patterns to genomic DNA and maps to diverse genetic loci. Expression analysis of this last class suggests that only a small number of these genes are expressed. The quantitative effect of the Tri locus on root and floral inhibitor gene expression was examined in near-isogenic lines of pea. The proteins encoded by the three classes are all members of the same family (Bowman-Birk) of enzyme inhibitors but are distinct in terms of overall sequence, active site sequences and inhibitor function. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Three classes of proteinase inhibitor gene have distinct but overlapping patterns of expression in Pisum sativum plants

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Publisher
Kluwer Academic Publishers
Copyright
Copyright © 2002 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:1013379430582
Publisher site
See Article on Publisher Site

Abstract

Genes representative of three gene classes encoding proteinase inhibitor proteins, with distinct spatial expression patterns, were isolated and characterized from Pisum.Under standard plant growth conditions, one class is expressed exclusively in seeds, whereas the other two make minor contributions to seed inhibitor proteins but are also expressed in other organs, predominantly in root endodermal and floral reproductive tissues. Two of the gene classes contain few genes and are genetically linked at the Tri locus, whereas the third class displays complex hybridization patterns to genomic DNA and maps to diverse genetic loci. Expression analysis of this last class suggests that only a small number of these genes are expressed. The quantitative effect of the Tri locus on root and floral inhibitor gene expression was examined in near-isogenic lines of pea. The proteins encoded by the three classes are all members of the same family (Bowman-Birk) of enzyme inhibitors but are distinct in terms of overall sequence, active site sequences and inhibitor function.

Journal

Plant Molecular BiologySpringer Journals

Published: Oct 13, 2004

References

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