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Recent evolution of bacterial pathogens: The gall-forming pantoea agglomerans case
Year:
2009
Source of publication :
Annual Review of Phytopathology
Authors :
Manulis-Sasson, Shulamit
;
.
Volume :
47
Co-Authors:
Barash, I., Department of Plant Sciences, Faculty of Life Sciences, Tel-Aviv Univesity, Tel-Aviv 61390, Israel
Manulis-Sasson, S., Department of Plant Pathology and Weed Research, ARO, Volcani Center, Bet Dagan 50250, Israel
Facilitators :
From page:
133
To page:
152
(
Total pages:
20
)
Abstract:
Pantoea agglomerons, a widespread epiphyte and commensal bacterium, has evolved into an Hrp-dependent and host-specific tumorigenic pathogen by acquiring a plasmid contain ing a pathogenicity island (PAI). The PAl was evolved on an iteron plasmid of the IncN family, which is distributed among genetically diverse populations of P. agglomerons. The structure of die PAI supports the premise of a recently evolved pathogen. This review offers insight into a unique model for emergence of new bacterial pathogens. It illustrates how horizontal gene transfer was the major driving force in the creation of the PAI, although a pathoadaptive mechanism might also be involved. It describes the crucial function of plant-produced indole-3 -acetic acid (IAA) and cytokinines (CK) in gall initiation as opposed to the significant but secondary role of pathogensecreted phytohormones. It also unveils the role of type III effectors in determination of host specificity and evolution of the pathogen into pathovars. Finally, it describes how interactions between the quorum sensing system, hrp regulatory genes, and bacterially secreted IAA or CKs affect gall formation and epiphytic fitness. Copyright © 2009 by Annual Reviews. All rights reserved.
Note:
Related Files :
cytokinins
Evolution
Genetics
host pathogen interaction
host specificity
Microbiology
Pantoea agglomerans
Plant Tumors
Show More
Related Content
More details
DOI :
10.1146/annurev-phyto-080508-081803
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
29918
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:50
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Scientific Publication
Recent evolution of bacterial pathogens: The gall-forming pantoea agglomerans case
47
Barash, I., Department of Plant Sciences, Faculty of Life Sciences, Tel-Aviv Univesity, Tel-Aviv 61390, Israel
Manulis-Sasson, S., Department of Plant Pathology and Weed Research, ARO, Volcani Center, Bet Dagan 50250, Israel
Recent evolution of bacterial pathogens: The gall-forming pantoea agglomerans case
Pantoea agglomerons, a widespread epiphyte and commensal bacterium, has evolved into an Hrp-dependent and host-specific tumorigenic pathogen by acquiring a plasmid contain ing a pathogenicity island (PAI). The PAl was evolved on an iteron plasmid of the IncN family, which is distributed among genetically diverse populations of P. agglomerons. The structure of die PAI supports the premise of a recently evolved pathogen. This review offers insight into a unique model for emergence of new bacterial pathogens. It illustrates how horizontal gene transfer was the major driving force in the creation of the PAI, although a pathoadaptive mechanism might also be involved. It describes the crucial function of plant-produced indole-3 -acetic acid (IAA) and cytokinines (CK) in gall initiation as opposed to the significant but secondary role of pathogensecreted phytohormones. It also unveils the role of type III effectors in determination of host specificity and evolution of the pathogen into pathovars. Finally, it describes how interactions between the quorum sensing system, hrp regulatory genes, and bacterially secreted IAA or CKs affect gall formation and epiphytic fitness. Copyright © 2009 by Annual Reviews. All rights reserved.
Scientific Publication
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