scholarly journals A Draft Genome Sequence of Pseudomonas syringae pv. tomato T1 Reveals a Type III Effector Repertoire Significantly Divergent from That of Pseudomonas syringae pv. tomato DC3000

2009 ◽  
Vol 22 (1) ◽  
pp. 52-62 ◽  
Author(s):  
Nalvo F. Almeida ◽  
Shuangchun Yan ◽  
Magdalen Lindeberg ◽  
David J. Studholme ◽  
David J. Schneider ◽  
...  

Diverse gene products including phytotoxins, pathogen-associated molecular patterns, and type III secreted effectors influence interactions between Pseudomonas syringae strains and plants, with additional yet uncharacterized factors likely contributing as well. Of particular interest are those interactions governing pathogen-host specificity. Comparative genomics of closely related pathogens with different host specificity represents an excellent approach for identification of genes contributing to host-range determination. A draft genome sequence of Pseudomonas syringae pv. tomato T1, which is pathogenic on tomato but nonpathogenic on Arabidopsis thaliana, was obtained for this purpose and compared with the genome of the closely related A. thaliana and tomato model pathogen P. syringae pv. tomato DC3000. Although the overall genetic content of each of the two genomes appears to be highly similar, the repertoire of effectors was found to diverge significantly. Several P. syringae pv. tomato T1 effectors absent from strain DC3000 were confirmed to be translocated into plants, with the well-studied effector AvrRpt2 representing a likely candidate for host-range determination. However, the presence of avrRpt2 was not found sufficient to explain A. thaliana resistance to P. syringae pv. tomato T1, suggesting that other effectors and possibly type III secretion system–independent factors also play a role in this interaction.

2017 ◽  
Vol 5 (36) ◽  
Author(s):  
Chi Eun Hong ◽  
Sung Hee Jo ◽  
Ick-Hyun Jo ◽  
Haeyoung Jeong ◽  
Jeong Mee Park

ABSTRACT Variovorax paradoxus KB5, isolated from the inside of Arabidopsis thaliana leaves, showed antibacterial activity against the phytopathogen Pseudomonas syringae pv. tomato DC3000. Here, we report a draft genome sequence of V. paradoxus KB5, which contains a delftibactin-like nonribosomal peptide biosynthetic gene cluster.


2003 ◽  
Vol 16 (1) ◽  
pp. 43-52 ◽  
Author(s):  
Derrick E. Fouts ◽  
Jorge L. Badel ◽  
Adela R. Ramos ◽  
Ryan A. Rapp ◽  
Alan Collmer

The plant pathogenic species Pseudomonas syringae is divided into numerous pathovars based on host specificity. For example, P. syringae pv. tomato DC3000 is pathogenic on tomato and Arabidopsis, whereas P. syringae pv. syringae 61 is pathogenic on bean. The ability of P. syringae strains to elicit the hypersensitive response (HR) in non-hosts or be pathogenic (or parasitic) in hosts is dependent on the Hrp (type III secretion) system and effector proteins this system is thought to inject into plant cells. To test the role of the Hrp system in determining host range, the hrp/hrc gene cluster (hrpK through hrpR) was deleted from DC3000 and complemented in trans with the orthologous cluster from strain 61. Mutant CUCPB5114 expressing the bean pathogen Hrp system on plasmid pCPP2071 retained the ability of wild-type DC3000 to elicit the HR in bean, to grow and cause bacterial speck in tomato, and to elicit a cultivar-specific (gene-for-gene) HR in tomato plants carrying the Pto resistance gene. However, the symptoms produced in compatible tomato plants involved markedly reduced chlorosis, and CUCPB5114(pCPP2071) did not grow or produce symptoms in Arabidopsis Col-0 although it was weakly virulent in NahG Arabidopsis. A hypersensitive-like collapse was produced by CUCPB5114(pCPP2071) in Arabidopsis Col-0 at 1 × 107 CFU/ml, but only if the bacteria also expressed AvrB, which is recognized by the RPM1 resistance gene in Col-0 and confers incompatibility. These observations support the concept that the P. syringae effector proteins, rather than secretion system components, are the primary determinants of host range at both the species and cultivar levels of host specificity.


BMC Genomics ◽  
2009 ◽  
Vol 10 (1) ◽  
pp. 395 ◽  
Author(s):  
David J Studholme ◽  
Selena Ibanez ◽  
Daniel MacLean ◽  
Jeffery L Dangl ◽  
Jeff H Chang ◽  
...  

BMC Genomics ◽  
2009 ◽  
Vol 10 (1) ◽  
pp. 569 ◽  
Author(s):  
David J Studholme ◽  
Selena Ibanez ◽  
Daniel MacLean ◽  
Jeffery L Dangl ◽  
Jeff H Chang ◽  
...  

2015 ◽  
Vol 3 (5) ◽  
Author(s):  
Fariha Masood Siddiqui ◽  
Muhammad Ibrahim ◽  
Nighat Noureen ◽  
Zobia Noreen ◽  
Richard W. Titball ◽  
...  

The enteropathogen Campylobacter jejuni is a global health disaster, being one of the leading causes of bacterial gastroenteritis. Here, we present the draft genome sequence of C. jejuni strain cj255, isolated from a chicken source in Islamabad, Pakistan. The draft genome sequence will aid in epidemiological studies and quarantine of this broad-host-range pathogen.


2015 ◽  
Vol 3 (3) ◽  
Author(s):  
Wenjun Zhao ◽  
Hongshan Jiang ◽  
Qian Tian ◽  
Jie Hu

Author(s):  
Isabel Fuenzalida-Valdivia ◽  
Maria Victoria Gangas ◽  
Diego Zavala ◽  
Ariel Herrera-Vásquez ◽  
Fabrice Roux ◽  
...  

Here, we report the genome sequence of the P. syringae strain RAYR-BL, isolated from natural accessions of Arabidopsis plants. The draft genome sequence consists of 5.85 Mbp assembled in 110 contigs. The study of P. syringae RAYR-BL is a valuable tool to investigate molecular features of plant-pathogen interaction under environmental conditions.


2019 ◽  
Vol 8 (20) ◽  
Author(s):  
Ganesan Prakash ◽  
Aundy Kumar ◽  
Neelam Sheoran ◽  
Rashmi Aggarwal ◽  
Chellapilla Tara Satyavathi ◽  
...  

The first draft genome sequence of the pearl millet blast pathogen Magnaporthe grisea PMg_Dl from India is presented. The genome information of M. grisea will be useful to understand the Magnaporthe speciation, genetic diversity, environmental adaptation, and pathogenic and host range determinants.


2016 ◽  
Vol 4 (5) ◽  
Author(s):  
Cheryl L. Patten ◽  
Haeyoung Jeong ◽  
Andrew J. C. Blakney ◽  
Natalie Wallace

We report here the draft genome sequence ofPseudomonas syringaeGR12-2, a nitrogen-fixing, plant growth–promoting bacterium, isolated from the rhizosphere of an Arctic grass. The 6.6-Mbp genome contains 5,676 protein-coding genes, including a nitrogen-fixation island similar to that inP. stutzeri.


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