Biology and epidemics of <i>Candidatus</i> Liberibacter species, psyllid‐transmitted plant‐pathogenic bacteria

Haapalainen, Minna

doi:10.1111/aab.12149

Cited by 131 publications

(118 citation statements)

References 186 publications

(312 reference statements)

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“…These species were formally reported in Bosnia-Herzegovina, France, Greece, Iran, Italy, Serbia, Switzerland and Turkey (Ouvrard & Burckhardt, 2012). Here, we report the presence of B. tremblayi and B. nigricornis in Spain in addition to B. trigonica, which was already reported by AlfaroFernández et al (2012b) and is widely distributed in the Mediterranean region (Haapalainen, 2014). 'B.…”

supporting

confidence: 80%

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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supporting

confidence: 80%

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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“…The bacterium is also associated with vegetative disorders in other Solanaceae and Apiaceae crops in different areas worldwide (Haapalainen, 2014). CaLso is transmitted from potato mother tubers to growing plants and to progeny tubers (Pitman et al, 2011) and is a carrot seed borne pathogen , which poses a high risk of introduction of the bacterium into new areas in which contaminated carrot seeds are commercialized.…”

Section: Introductionmentioning

confidence: 99%

Transmission of ‘Candidatus Liberibacter solanacearum’ by Bactericera trigonica Hodkinson to vegetable hosts

Teresani

Hernández

Bertolini

et al. 2018

Span. j. agric. res.

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The bacterium 'Candidatus Liberibacter solanacearum' is a recent plant pathogen of several crops in Solanaceae and Apiaceae and is associated with economically important diseases. The bacterium is a carrot seed borne pathogen that can also be transmitted from potato mother tubers and by psyllid vectors. The psyllid Bactericera trigonica Hodkinson was described carrying CaLso associated with vegetative disorders in carrot and celery crops in Spain and its competence to transmit this phloem-limited bacterium among vegetables is currently being investigated. Here electrical penetration graphs showed that B. trigonica fed in the phloem of carrot and celery and probed the phloem in potato, but not in tomato plants. The bacterium was efficiently transmitted to carrot and celery plants when either single B. trigonica or groups of ten fed on these species. An inoculation access period of 24 hours was sufficient for a single B. trigonica to transmit the bacterium to carrot (67.8%), celery (21.1%) and eventually to potato and tomato (6.0%). Higher transmission rates were obtained with 10 individuals on celery (100%), carrot (80%), potato (10%) and tomato (10%). Bactericera trigonica laid eggs, and the hatched nymphs develop into adult on carrot and celery, but not on potato and tomato. CaLso was detected in 20% of the eggs laid by females carrying the bacterium. The results confirmed that B. trigonica is a vector of the bacterium to carrot and celery, and it is discussed the potential role of this psyllid in the transmission of the pathogen to potato and tomato plants.Additional keywords: electrical penetration graph; haplotype E; psyllids; real-time PCR; transovarial passage.

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“…They are a major cause of damage to various Rutaceae, Solanaceae and Apiaceae crop plants (Haapalainen, 2014). "Candidatus Liberibacter europaeus" (Leu) was first described in Italy from pear trees and associated Cacopsylla pyri psyllids (Raddadi et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Haplotypes of “Candidatus Liberibacter europaeus” also separate by geography and host species

Nelson

2015

Preprint

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Abstract"Candidatus Liberibacter europaeus" (Leu) is one of six currently known Liberibacter species. It is known primarily from pear and related species across Europe, and from Scotch broom and its associated psyllids in New Zealand (introduced from Britain). The psyllids were introduced to New Zealand as a biocontrol agent for broom and it is thought the bacterium may have been introduced as an endosymbiont of the psyllids. No symptoms in apple or pear trees have been reported, but mild symptoms can occur in broom.16S and 16S-23S intergenic spacer region DNA sequences of this species are available from GenBank.Analysis of these sequences and associated ecological descriptions indicates the occurrence of two haplotypes, LeuA and LeuB, defined not only genetically, but also by geographic range as well as by plant/psyllid host species composition. Liberibacter species are new to science and haplotype identifications enable historical accounts of relationships and spread to be generated.

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Biology and epidemics of Candidatus Liberibacter species, psyllid‐transmitted plant‐pathogenic bacteria

Cited by 131 publications

References 186 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

Transmission of ‘Candidatus Liberibacter solanacearum’ by Bactericera trigonica Hodkinson to vegetable hosts

Haplotypes of “Candidatus Liberibacter europaeus” also separate by geography and host species

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