Cloning of polygalacturonase inhibitor protein genes from Solanum brevidens Fill.

Cloning of polygalacturonase inhibitor protein genes from Solanum brevidens Fill. New data were obtained for the Solanum brevidens Fill. nucleotide sequences coding for polygalacturonase inhibitor proteins (PGIPs), which are involved in plant defense against phytopathogenic fungi. Highly degenerate primers directed to the conserved regions of the known PGIP genes of tomato, kiwi, apple, carrot, and grape were used to clone four pgip genes and one pseudogene from the genome of S. brevidens, a species that is closely related to cultivated potato, forms no tubers, is highly resistant to phytopathogens, and is often employed in potato breeding. The sequenced part of the coding region of the new genes is 924 bp and codes for a protein of 308 amino acid residues (without the leader peptide). The genes were designated as pgipSbr1(1), pgipSbr1(2), pgipSbr2, pgipSbr3, and pgipSbr4. The amino acid sequences of the S. brevidens PGIPs have 90.9–99.4% identity to each other and 94% identity to PGIP of Lycopersicon esculentum Mill., another member of the family Solanaceae. The amino acid residues differing between S. brevidens PGIPs were assumed to determine the selectivity of interactions with particular polyglucuronases of phytopathogenic fungi. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Cloning of polygalacturonase inhibitor protein genes from Solanum brevidens Fill.

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Publisher
Nauka/Interperiodica
Copyright
Copyright © 2006 by Pleiades Publishing, Inc.
Subject
Biomedicine; Microbial Genetics and Genomics; Animal Genetics and Genomics; Human Genetics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S102279540604003X
Publisher site
See Article on Publisher Site

Abstract

New data were obtained for the Solanum brevidens Fill. nucleotide sequences coding for polygalacturonase inhibitor proteins (PGIPs), which are involved in plant defense against phytopathogenic fungi. Highly degenerate primers directed to the conserved regions of the known PGIP genes of tomato, kiwi, apple, carrot, and grape were used to clone four pgip genes and one pseudogene from the genome of S. brevidens, a species that is closely related to cultivated potato, forms no tubers, is highly resistant to phytopathogens, and is often employed in potato breeding. The sequenced part of the coding region of the new genes is 924 bp and codes for a protein of 308 amino acid residues (without the leader peptide). The genes were designated as pgipSbr1(1), pgipSbr1(2), pgipSbr2, pgipSbr3, and pgipSbr4. The amino acid sequences of the S. brevidens PGIPs have 90.9–99.4% identity to each other and 94% identity to PGIP of Lycopersicon esculentum Mill., another member of the family Solanaceae. The amino acid residues differing between S. brevidens PGIPs were assumed to determine the selectivity of interactions with particular polyglucuronases of phytopathogenic fungi.

Journal

Russian Journal of GeneticsSpringer Journals

Published: Apr 19, 2006

References

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