Polygalacturonases, polygalacturonase-inhibiting proteins and pectic oligomers in plant–pathogen interactions

• Published in: BBA - Proteins and Proteomics Vol. 1696; no. 2; pp. 237 - 244
• Main Authors: D'Ovidio, Renato, Mattei, Benedetta, Roberti, Serena, Bellincampi, Daniela
• Format: Book Review Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 12.02.2004
• Subjects: Enzyme Inhibitors - metabolism; Fungal polygalacturonase; Fungi - enzymology; Fungi - pathogenicity; Gene Expression Regulation, Plant; Oligogalacturonide; Oligosaccharides - metabolism; Plant defense; Plant Proteins - genetics; Plant Proteins - metabolism; Plants - metabolism; Plants - microbiology; Polygalacturonase - antagonists & inhibitors; Polygalacturonase-inhibiting protein; Proteins - genetics; Proteins - physiology; Oligogalacturonide; AOS; PG; OG; CWDE; Fungal polygalacturonase; PGIP; Plant defense; LRR; Polygalacturonase-inhibiting protein
• ISSN: 1570-9639; 0006-3002; 1878-1454; 1878-2434
• DOI: 10.1016/j.bbapap.2003.08.012

Polygalacturonases (PGs) are produced by fungal pathogens during early plant infection and are believed to be important pathogenicity factors. Polygalacturonase-inhibiting proteins (PGIPs) are plant defense proteins which reduce the hydrolytic activity of endoPGs and favor the accumulation of long-chain oligogalacturonides (OGs) which are elicitors of a variety of defense responses. PGIPs belong to the superfamily of leucine reach repeat (LRR) proteins which also include the products of several plant resistance genes. A number of evidence demonstrates that PGIPs efficiently inhibit fungal invasion.