A new haplotype of “Candidatus Liberibacter solanacearum” identified in the Mediterranean region

Nelson, Warrick; Sengoda, Venkatesan G.; Alfaro-Fernández, A.; Font, M. I.; Crosslin, J. M.; Munyaneza, Joseph E.

doi:10.1007/s10658-012-0121-3

Cited by 94 publications

(101 citation statements)

References 24 publications

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“…Trioza apicalis Förster was first described in carrot in Finland (Munyaneza et al, 2010b) transmitting the haplotype C (Nelson et al, 2011) and B. trigonica Hodkinson is associated with the transmission of 'Ca. L solanacearum' haplotype D in carrot and likely with haplotype E in carrot and celery in Spain (Alfaro-Fernández et al, 2012b;Nelson et al, 2012;Teresani et al, 2014). In another 'Ca.…”

Section: Hosts and Monitoring Sitesmentioning

confidence: 98%

Search for potential vectors of ‘Candidatus Liberibacter solanacearum’: population dynamics in host crops

Teresani

Hernández

Bertolini

et al. 2015

Span. j. agric. res.

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‘Candidatus Liberibacter solanacearum’ has recently been reported to be associated with vegetative disorders and economic losses in carrot and celery crops in Spain. The bacterium is a carrot seedborne pathogen and it is transmitted by psyllid vector species. From 2011 to 2014 seasonal and occasional surveys in carrot, celery and potato plots were performed. The sticky plant method was used to monitor the arthropods that visited the plants. The collected arthropods were classified into Aphididae and Cicadellidae, and the superfamily Psylloidea was identified to the species level. The superfamily Psylloidea represented 35.45% of the total arthropods captured on celery in Villena and 99.1% on carrot in Tenerife (Canary Islands). The maximum flight of psyllid species was in summer, both in mainland Spain and the Canary Islands, reaching a peak of 570 specimens in August in Villena and 6,063 in July in Tenerife. The main identified psyllid species were as follows: Bactericera trigonica Hodkinson, B. tremblayi Wagner and B. nigricornis Förster. B. trigonica represented more than 99% of the psyllids captured in the Canary Islands and 75% and 38% in 2011 and 2012 in Villena, respectively. In addition, Trioza urticae Linnaeus, Bactericera sp., Ctenarytaina sp., Cacopsylla sp., Trioza sp. and Psylla sp. were captured. ‘Ca. L. solanacearum’ targets were detected by squash real-time PCR in 19.5% of the psyllids belonging to the different Bactericera species. This paper reports at least three new psyllid species that carry the bacterium and can be considered as potential vectors.

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Section: Hosts and Monitoring Sitesmentioning

confidence: 98%

Search for potential vectors of ‘Candidatus Liberibacter solanacearum’: population dynamics in host crops

Teresani

Hernández

Bertolini

et al. 2015

Span. j. agric. res.

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“…L. psyllaurous") [28] is associated with diseases of Solanaceae crops (especially potato and tomato) in North America and Apiaceae crops (especially carrot and celery) in Europe [29] and North Africa [30]. Five haplotypes with geographic and psyllid/plant host differences have been described, designated LsoA, B, C, D and E [31][32][33]. The genome has been sequenced [34], most likely the B haplotype.…”

Section: Introductionmentioning

confidence: 99%

Intragenomic homogeneity on Liberibacter 16S rDNA confirms phylogeny and explains ecological strategy

Nelson

Wulff

Bové³

2015

Preprint

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Three of the five currently recognized "Candidatus Liberibacter" spp., "Ca. L. asiaticus" (Las), "Ca. L. americanus" (Lam) and "Ca. L. solanacearum", and the newly erected genus Liberibacter species, L. crescens (Lcr), have had their genomes sequenced. In all four cases there are three homogeneous copies of the 16S rRNA gene, one present as the reverse complement of the other two. 16S intragenic homogeneity is common within the α-Proteobacteria. The presence of three 16S rRNA copies indicates an advantage for a rapid response of population increase to favourable growth conditions. The metabolic cost of carrying multiple copies is avoided during periods of low cellular activity as this situation occurs at low temperatures, for example overwintering in deciduous plants or in a dormant insect host. A large insertion in the 16S rDNA sequence of three species compared to the other three species indicates a dichotomy in the Liberibacter genus and provides a phylogenetic signal of closeness to the proximal node within the Rhizobiaceae. In spite of similar symptoms in Citrus crops associated with Lam and Las infections, these species belong on either side of this dichotomy, thus confirming Lam as phylogenetically closer to the proximal node than Las.

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“…RNA genes (Nelson et al, 2011(Nelson et al, , 2012(Nelson et al, , 2013Teresani et al, 2014). Lso haplotypes are distributed in different geographical regions and have been designated as A, B, C, D, E, according to the order they have been described.…”

Section: The Pathogen Candidatus Liberibacter Solanacearummentioning

confidence: 99%

“…Haplotype B overlaps with haplotype A in Solanaceae in the United States of America and Mexico (Nelson et al, 2011). Haplotypes C, D, E have been associated to Apiaceae crops in Europe (Nelson et al, 2012). In North Europe and Central Europe (Norway, Finland, Sweden, Germany) haplotype C has been described in carrot (EPPO, 2013) whereas in Southern Europe (Spain, France), Northern Africa (Morocco) haplotypes D and E have been found in carrot and celery.…”

Section: The Pathogen Candidatus Liberibacter Solanacearummentioning

confidence: 99%

Vector mediated transmission of Candidatus Liberibacter solanacearum and epidemiological consequences

Delgado¹,

Andrés²

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A new haplotype of “Candidatus Liberibacter solanacearum” identified in the Mediterranean region

Cited by 94 publications

References 24 publications

Search for potential vectors of ‘Candidatus Liberibacter solanacearum’: population dynamics in host crops

Search for potential vectors of ‘Candidatus Liberibacter solanacearum’: population dynamics in host crops

Intragenomic homogeneity on Liberibacter 16S rDNA confirms phylogeny and explains ecological strategy

Vector mediated transmission of Candidatus Liberibacter solanacearum and epidemiological consequences

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