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Molecular genetics of Erwinia amylovora involved in the development of fire blight.
FEMS Microbiol Lett. 2005 Dec 15; 253(2):185-92.FM

Abstract

The bacterial plant pathogen, Erwinia amylovora, causes the devastating disease known as fire blight in some Rosaceous plants like apple, pear, quince, raspberry and several ornamentals. Knowledge of the factors affecting the development of fire blight has mushroomed in the last quarter century. On the molecular level, genes encoding a Hrp type III secretion system, genes encoding enzymes involved in synthesis of extracellular polysaccharides and genes facilitating the growth of E. amylovora in its host plants have been characterized. The Hrp pathogenicity island, delimited by genes suggesting horizontal gene transfer, is composed of four distinct regions, the hrp/hrc region, the HEE (Hrp effectors and elicitors) region, the HAE (Hrp-associated enzymes) region, and the IT (Island transfer) region. The Hrp pathogenicity island encodes a Hrp type III secretion system (TTSS), which delivers several proteins from bacteria to plant apoplasts or cytoplasm. E. amylovora produces two exopolysaccharides, amylovoran and levan, which cause the characteristic fire blight wilting symptom in host plants. In addition, other genes, and their encoded proteins, have been characterized as virulence factors of E. amylovora that encode enzymes facilitating sorbitol metabolism, proteolytic activity and iron harvesting. This review summarizes our understanding of the genes and gene products of E. amylovora that are involved in the development of the fire blight disease.

Authors+Show Affiliations

Oh CS
Department of Plant Pathology, Cornell University, 334 Plant Science Building, Ithaca, NY 14853, USA.
Beer SV
No affiliation info available

MeSH

Bacterial ProteinsDeferoxamineErwinia amylovoraGenomic IslandsMetalloproteasesPlant DiseasesProtein TransportRosaceaeSorbitolVirulence

Pub Type(s)

Journal Article
Review

Language

eng

PubMed ID

16253442

Citation

Oh, Chang-Sik, and Steven V. Beer. "Molecular Genetics of Erwinia Amylovora Involved in the Development of Fire Blight." FEMS Microbiology Letters, vol. 253, no. 2, 2005, pp. 185-92.
Oh CS, Beer SV. Molecular genetics of Erwinia amylovora involved in the development of fire blight. FEMS Microbiol Lett. 2005;253(2):185-92.
Oh, C. S., & Beer, S. V. (2005). Molecular genetics of Erwinia amylovora involved in the development of fire blight. FEMS Microbiology Letters, 253(2), 185-92.
Oh CS, Beer SV. Molecular Genetics of Erwinia Amylovora Involved in the Development of Fire Blight. FEMS Microbiol Lett. 2005 Dec 15;253(2):185-92. PubMed PMID: 16253442.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Molecular genetics of Erwinia amylovora involved in the development of fire blight. AU - Oh,Chang-Sik, AU - Beer,Steven V, Y1 - 2005/10/13/ PY - 2005/07/14/received PY - 2005/09/27/revised PY - 2005/09/28/accepted PY - 2005/10/29/pubmed PY - 2006/3/11/medline PY - 2005/10/29/entrez SP - 185 EP - 92 JF - FEMS microbiology letters JO - FEMS Microbiol Lett VL - 253 IS - 2 N2 - The bacterial plant pathogen, Erwinia amylovora, causes the devastating disease known as fire blight in some Rosaceous plants like apple, pear, quince, raspberry and several ornamentals. Knowledge of the factors affecting the development of fire blight has mushroomed in the last quarter century. On the molecular level, genes encoding a Hrp type III secretion system, genes encoding enzymes involved in synthesis of extracellular polysaccharides and genes facilitating the growth of E. amylovora in its host plants have been characterized. The Hrp pathogenicity island, delimited by genes suggesting horizontal gene transfer, is composed of four distinct regions, the hrp/hrc region, the HEE (Hrp effectors and elicitors) region, the HAE (Hrp-associated enzymes) region, and the IT (Island transfer) region. The Hrp pathogenicity island encodes a Hrp type III secretion system (TTSS), which delivers several proteins from bacteria to plant apoplasts or cytoplasm. E. amylovora produces two exopolysaccharides, amylovoran and levan, which cause the characteristic fire blight wilting symptom in host plants. In addition, other genes, and their encoded proteins, have been characterized as virulence factors of E. amylovora that encode enzymes facilitating sorbitol metabolism, proteolytic activity and iron harvesting. This review summarizes our understanding of the genes and gene products of E. amylovora that are involved in the development of the fire blight disease. SN - 0378-1097 UR - https://www.unboundmedicine.com/medline/citation/16253442/Molecular_genetics_of_Erwinia_amylovora_involved_in_the_development_of_fire_blight_ DB - PRIME DP - Unbound Medicine ER -