Exemplar Abstract for Pseudomonas tolaasii Paine 1919 (Approved Lists 1980).

2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
Dorothea Taylor ◽  
George M Garrity
Keyword(s):  
1973 ◽  
Vol 26 (2) ◽  
pp. 509 ◽  
Author(s):  
NG Nair ◽  
PC Fahy

Evidence is presented for the production of toxin in vitro and in vivo by P. tolaasii. Nutrient broth suspensions of P. tolaasii placed on detached mushroom sporophores but separated by a dialysis membrane caused brown discoloration and slightly sunken lesions.


2021 ◽  
Author(s):  
Zhenghui Liu ◽  
Yitong Zhao ◽  
Frederick Leo Sossah ◽  
Benjamin Azu Okorley ◽  
Daniel G. Amoako ◽  
...  

Since 2016, devastating bacterial blotch affecting the fruiting bodies of Agaricus bisporus, Cordyceps militaris, Flammulina filiformis, and Pleurotus ostreatus in China has caused severe economic losses. We isolated 102 bacterial strains and characterized them polyphasically. We identified the causal agent as Pseudomonas tolaasii and confirmed the pathogenicity of the strains. A host range test further confirmed the pathogen’s ability to infect multiple hosts. This is the first report in China of bacterial blotch in C. militaris caused by P. tolaasii. Whole-genome sequences were generated for three strains: Pt11 (6.48 Mb), Pt51 (6.63 Mb), and Pt53 (6.80 Mb), and pangenome analysis was performed with 13 other publicly accessible P. tolaasii genomes to determine their genetic diversity, virulence, antibiotic resistance, and mobile genetic elements. The pangenome of P. tolaasii is open, and many more gene families are likely to emerge with further genome sequencing. Multilocus sequence analysis using the sequences of four common housekeeping genes (glns, gyrB, rpoB, and rpoD) showed high genetic variability among the P. tolaasii strains, with 115 strains clustered into a monophyletic group. The P. tolaasii strains possess various genes for secretion systems, virulence factors, carbohydrate-active enzymes, toxins, secondary metabolites, and antimicrobial resistance genes that are associated with pathogenesis and adapted to different environments. The myriad of insertion sequences, integrons, prophages, and genome islands encoded in the strains may contribute to genome plasticity, virulence, and antibiotic resistance. These findings advance understanding of the determinants of virulence, which can be targeted for the effective control of bacterial blotch disease.


Author(s):  
P. Lo Cantore ◽  
M. Coraiola ◽  
M. Dalla Serra ◽  
G. Menestrina ◽  
S. Lazzaroni ◽  
...  

Mycobiology ◽  
2000 ◽  
Vol 28 (2) ◽  
pp. 89-92 ◽  
Author(s):  
Soon-Wo Kwon ◽  
Sang-Hee Kim ◽  
Seung-Joo Go

2012 ◽  
Vol 91 (3) ◽  
pp. 514-519 ◽  
Author(s):  
Hanh Thi Dieu Nguyen ◽  
Soojin Yoon ◽  
Min-Hee Kim ◽  
Young-Kee Kim ◽  
Moon-Young Yoon ◽  
...  

2006 ◽  
Vol 1758 (11) ◽  
pp. 1713-1722 ◽  
Author(s):  
M. Coraiola ◽  
P. Lo Cantore ◽  
S. Lazzaroni ◽  
A. Evidente ◽  
N.S. Iacobellis ◽  
...  

Pathogens ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 227 ◽  
Author(s):  
Benjamin Azu Okorley ◽  
Frederick Leo Sossah ◽  
Dan Dai ◽  
Shuai Xu ◽  
Zhenghui Liu ◽  
...  

Brown blotch disease (BBD) caused by Pseudomonas tolaasii is one of the most devastating diseases of Pleurotus spp. worldwide. Breeding for resistant strains is the most effective method for controlling BBD. To identify resistant germplasm for BBD management, 97 strains comprising 21 P. cf. floridanus, 20 P. ostreatus, and 56 P. pulmonarius were screened by two different methods; namely, inoculation of the pathogen on the mushroom pileus (IMP) and on the spawned substrate (IMSS) under controlled conditions. Out of the 97 strains screened, 22 P. pulmonarius, and four P. cf. floridanus were moderately resistant to BBD using the IMP method. Eleven P. pulmonarius, six P. cf. florida, and one P. ostreatus strains were highly resistant to BBD using the IMSS method. All of the 97 strains showed varying degrees of susceptibility using the IMP method, but eight strains were completely resistant using the IMSS method. Combining these two methods, five strains were highly resistant (four P. pulmonarius and one P. cf. floridanus) and 11 were moderately resistant (eight P. pulmonarius and three P. cf. floridanus). The resistance sources to P. tolaasii identified in P. pulmonarius and P. cf. floridanus could be used for further breeding of Pleurotus spp.


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