First Report of <i>Burkholderia cenocepacia</i> Causing Sour Skin of Onion (<i>Allium cepa</i>) in Brazil

Oliveira, Willams José de; Silva, W. A.; Silva, Adriano Márcio Freire; Candeia, J. A.; Souza, Elineide Barbosa de; Mariano, R. L. R.; Gama, Marco Aurélio Siqueira da

doi:10.1094/pdis-05-17-0759-pdn

Cited by 9 publications

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“…Strains of B . cenocepacia Lineages IIIA and IIIB have been found more frequently in human individuals with cystic fibrosis than in the environment (Wallner et al, 2019), and although strains of Lineage IIIB have been shown to cause onion sour skin in the semi‐arid region of north‐east Brazil (Oliveira et al, 2017), to our knowledge, this is the first report of B . cenocepacia Lineage IIIA strains in association with any plant diseases.…”

Section: Discussionmentioning

confidence: 88%

“…cepacia (Burkholder, 1950), B . cenocepacia (Oliveira et al, 2017) and B . multivorans (Wordell Filho and Boff, 2006) have been reported to cause this disease.…”

Section: Introductionmentioning

confidence: 99%

“…However, little is known about the diversity of BCC species associated with onion sour skin. Among the species of this complex, in addition to B. cepacia (Burkholder, 1950), B. cenocepacia (Oliveira et al, 2017) and B. multivorans (Wordell Filho and Boff, 2006) have been reported to cause this disease.…”

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confidence: 99%

“…The IIIC lineage has only been found in soil (Vandamme et al, 2003). Interestingly, among these B. cenocepacia lineages, the Lineage IIIB has been reported to cause onion sour skin in the Tohoku region of Japan (Tsuji and Kadota, 2020) and in the semi-arid region of north-east Brazil (Oliveira et al, 2017). In addition, strains identified based on the 16S rDNA sequencing as species of the BCC have also been found to cause onion sour skin in this latter region (Oliveira et al, 2019).…”

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confidence: 99%

“…More details about estimation among strains of B. cepacia complex based on genetic distances matrix estimates using Jukes-Cantor may be found inOliveira et al (2019) [Colour figure can be viewed at wileyonlinelibrary.com] in hospitals and in other environments, including water, agricultural soil, and plant rhizosphere samples, indicated that strains in B. cenocepacia Lineages IIIA and IIIB behave as two distinct species. Hence, it has been proposed recently that strains belonging to B. cenocepacia Lineage IIIA should be classified as B. cenocepacia sensu stricto, while strains in B. cenocepacia Lineage IIIB should be reclassified as B. servocepacia(Wallner et al, 2019).Strains of B. cenocepacia Lineages IIIA and IIIB have been found more frequently in human individuals with cystic fibrosis than in the environment(Wallner et al, 2019), and although strains of Lineage IIIB have been shown to cause onion sour skin in the semi-arid region of north-east Brazil(Oliveira et al, 2017), to our knowledge, this is the first report of B. cenocepacia Lineage IIIA strains in association with any plant diseases. Therefore, as most studies conducted on B. cenocepacia have been carried out with strains from clinical environments, where Lineages IIIA and IIIB are prevalent, and because plants may represent a reservoir for BCC pathogens…”

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confidence: 99%

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Predominance of Burkholderia cenocepacia lineages causing onion sour skin in the semi‐arid region of north‐east Brazil

et al. 2020

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Burkholderia cepacia was originally described as the causal agent of onion sour skin. However, this bacterium is now recognized as a complex of 22 closely related species, commonly referred to as the B. cepacia complex (BCC). Only a few taxonomic studies have been undertaken with the aim of understanding the diversity of species associated with onion sour skin. In this study, we used a polyphasic analysis including rep‐PCR assay, biochemical and pathological profiles, and multilocus sequence analysis (MLSA) to characterize the BCC species associated with onion sour skin in the semi‐arid region of north‐east Brazil. Phylogenetic analysis of the recA of strains representing the genetic variability, as determined by rep‐PCR, grouped the strains into four clades. Clades I and II represent B. cenocepacia lineages IIB and IIIA, respectively, while the strains in Clades III and IV clustered more closely to Clades I and II than to strains of any other BCC species. MLSA confirmed the existence of the four clades with a 1.00 posterior probability. A distance matrix indicated a low level of divergence among the strains of the four clades found in the MLSA, proving that B. cenocepacia lineages IIIA, IIIB, and a new lineage of B. cenocepacia are associated with onion sour skin in the semi‐arid region of north‐east Brazil. Also, surprisingly, no strain was identified as B. cepacia, indicating that this species probably does not play a role in this disease in this region.

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Section: Discussionmentioning

confidence: 88%

“…cepacia (Burkholder, 1950), B . cenocepacia (Oliveira et al, 2017) and B . multivorans (Wordell Filho and Boff, 2006) have been reported to cause this disease.…”

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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