The Weed Link in Zebra Chip Epidemiology: Suitability of Non-crop Solanaceae and Convolvulaceae to Potato Psyllid and “Candidatus Liberibacter Solanacearum”

Cooper, William C.; Horton, David; Miliczky, Eugene; Wohleb, Carrie H.; Waters, Timothy D.

doi:10.1007/s12230-019-09712-z

Cited by 28 publications

(20 citation statements)

References 34 publications

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“…Additionally, potato was detected in the gut contents of TPP collected in autumn from a stand of wolfberry ( Lycium barbarum ), suggesting that some of the psyllids tested had developed, or at least fed on, potato prior to moving to the wolfberry [ 32 ]. It is widely believed that the source psyllid that infects annual potato crops are from perennial non-crop host species [ 32 – 34 ]. Such host plants may ultimately serve as refuges for the insect until the annual host species are available, to which some adults will migrate [ 6 , 35 ].…”

Section: Discussionmentioning

confidence: 99%

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The ecological fitness of the tomato potato psyllid after transferring from non-crop host plants to tomato and potato

et al. 2022

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An insect’s fitness varies on different host plant species, and can be affected by previous host feeding experience. In New Zealand, Bactericera cockerelli (the tomato potato psyllid (TPP)) overwinter on various host species, and later migrate to annually grown crop host plants. How changing host plant species affects the insect’s fitness is unknown. This study evaluated if transferring adult TPP from non-crop to crop host species impacts the development and survival of their progeny. TPP were reared on non-crop host species, boxthorn, poroporo, and crop host species, potato and tomato. Adults were transferred from non-crop to the crop host species and allowed to oviposit for 48 hours before being removed. The eggs and nymphs were monitored every 24 hours for the development and survival of each life stage. The incubation period of eggs from adults transferred from poroporo to tomato was 6.9 days, and for boxthorn to tomato was 7.2 days, and was less than for eggs of adults moved from tomato to tomato (9.0 days) and potato to potato (9.2 days) (P < 0.05). Nymph developmental time was similar for all treatments. Total development time (egg to adult) was shorter for the progeny of adults from poroporo transferred to tomato (20.5 days) than those from tomato to tomato (23.2). The survival of eggs did not differ across treatments. Fewer nymphs survived when adults were transferred from tomato to tomato (50.4%) than those from poroporo to tomato (92.1%) (P < 0.05). Total survival (egg to adult) was higher for progeny of adults transferred from poroporo to tomato (80.0%) compared to boxthorn to potato (35.3%), boxthorn to boxthorn (40.7%), poroporo to potato (33.9%) and tomato to tomato (37.6%) (P < 0.05). The implications of this shift in fitness are discussed in relation to TPP management.

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Section: Discussionmentioning

confidence: 99%

“…Field bindweed and black nightshade are listed as host plants of TPP [ 1 , 15 ]. A previous study found bindweed to be an unsuitable host for the psyllid [ 34 ]. Since the progeny were unable to develop on these species in the present study, they may not be suitable as host species for the insect but rather, as casual plants.…”

Section: Discussionmentioning

confidence: 99%

The ecological fitness of the tomato potato psyllid after transferring from non-crop host plants to tomato and potato

et al. 2022

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“…Psyllid identifications were confirmed against reference type specimens in the NHM London collections. To account for intraspecific genetic variation, we obtained B. cockerelli specimens from Mexico (Universidad Autónoma Agraria Antonio Narro) and USA (USDA, Agricultural Research Services) from colony collections of each of the four recognised biotypes of B. cockerelli in Central America, the Central, Western, Northwestern, and Southwestern biotypes [19]. Specimens of B. cockerelli were also obtained from New Zealand labreared colonies (Plant Research, New Zealand).…”

Section: Specimen Collectionmentioning

confidence: 99%

“…While B. cockerelli prefers to complete its life cycle on Solanaceous plants it can also complete development on species of Convolvulaceae (Bindweeds and Morning Glories) [13]. In addition, adult B. cockerelli have been found on over 40 species belonging to 20 families, however most of these are either casual, food or shelter plants on which the psyllid is unable to complete a full life cycle [2,9,[14][15][16][17][18][19]. Four biotypes of B. cockerelli have been described according to polymorphisms in the mitochondrial cytochrome c oxidase subunit I (COI) gene and represent geographically distinct populations; central, western, north-western, and south-western [20,21].…”

Section: Introductionmentioning

confidence: 99%

A diagnostic real-time PCR assay for the rapid identification of the tomato-potato psyllid, Bactericera cockerelli (Šulc, 1909) and development of a psyllid barcoding database

et al. 2020

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The accurate and rapid identification of insect pests is an important step in the prevention and control of outbreaks in areas that are otherwise pest free. The potato-tomato psyllid Bactericera cockerelli (Š ulc, 1909) is the main vector of 'Candidatus Liberibacter solanacearum' on potato and tomato crops in North America and New Zealand; and is considered a threat for introduction in Europe and other pest-free regions. This study describes the design and validation of the first species-specific TaqMan probe-based real-time PCR assay, targeting the ITS2 gene region of B. cockerelli. The assay detected B. cockerelli genomic DNA from adults, immatures, and eggs, with 100% accuracy. This assay also detected DNA from cloned plasmids containing the ITS2 region of B. cockerelli with 100% accuracy. The assay showed 0% false positives when tested on genomic and cloned DNA from 73 other psyllid species collected from across Europe, New Zealand, Mexico and the USA. This included 8 other species in the Bactericera genus and the main vectors of 'Candidatus Liberibacter solanacearum' worldwide. The limit of detection for this assay at optimum conditions was 0.000001ng DNA (~200 copies) of ITS2 DNA which equates to around a 1:10000 dilution of DNA from one single adult specimen. This assay is the first real-time PCR based method for accurate, robust, sensitive and specific identification of B. cockerelli from all life stages. It can be used as a surveillance and monitoring tool to further study this important crop pest and to aid the prevention of outbreaks, or to prevent their spread after establishment in new areas.

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“…Most psyllid species are confined to a very narrow host range, only able to utilize one host plant or closely related plant species 34 . However, Lso transmission to new plant hosts may arise when a psyllid species can use multiple host or food plants or is introduced to a new area, such as is the case for B. cockerelli 35 – 37 and B. trigonica 17 . Concerns have arisen over the movement of psyllids onto non-host plants where feeding may occur incidentally or when their host plant is not available.…”

Section: Introductionmentioning

confidence: 99%

‘Candidatus Liberibacter solanacearum’ distribution and diversity in Scotland and the characterisation of novel haplotypes from Craspedolepta spp. (Psylloidea: Aphalaridae)

Sumner-Kalkun¹,

Highet²,

Arnsdorf³

et al. 2020

Sci Rep

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The phloem limited bacterium ‘Candidatus Liberibacter solanacearum’ (Lso) is associated with disease in Solanaceous and Apiaceous crops. This bacterium has previously been found in the UK in Trioza anthrisci, but its impact on UK crops is unknown. Psyllid and Lso diversity and distribution among fields across the major carrot growing areas of Scotland were assessed using real-time PCR and DNA barcoding techniques. Four Lso haplotypes were found: C, U, and two novel haplotypes. Lso haplotype C was also found in a small percentage of asymptomatic carrot plants (9.34%, n = 139) from a field in Milnathort where known vectors of this haplotype were not found. This is the first report of Lso in cultivated carrot growing in the UK and raises concern for the carrot and potato growing industry regarding the potential spread of new and existing Lso haplotypes into crops. Trioza anthrisci was found present only in sites in Elgin, Moray with 100% of individuals harbouring Lso haplotype C. Lso haplotype U was found at all sites infecting Trioza urticae and at some sites infecting Urtica dioica with 77.55% and 24.37% average infection, respectively. The two novel haplotypes were found in Craspedolepta nebulosa and Craspedolepta subpunctata and named Cras1 and Cras2. This is the first report of Lso in psyllids from the Aphalaridae. These new haplotypes were most closely related to Lso haplotype H recently found in carrot and parsnip. Lso was also detected in several weed plants surrounding carrot and parsnip fields. These included two Apiaceous species Aegropodium podagraria (hap undetermined) and Anthriscus sylvestris (hap C); one Gallium sp. (Rubiaceae) (hap undetermined); and Chenopodium album (Amaranthaceae) (hap undetermined).

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The Weed Link in Zebra Chip Epidemiology: Suitability of Non-crop Solanaceae and Convolvulaceae to Potato Psyllid and “Candidatus Liberibacter Solanacearum”

Cited by 28 publications

References 34 publications

The ecological fitness of the tomato potato psyllid after transferring from non-crop host plants to tomato and potato

The ecological fitness of the tomato potato psyllid after transferring from non-crop host plants to tomato and potato

A diagnostic real-time PCR assay for the rapid identification of the tomato-potato psyllid, Bactericera cockerelli (Šulc, 1909) and development of a psyllid barcoding database

‘Candidatus Liberibacter solanacearum’ distribution and diversity in Scotland and the characterisation of novel haplotypes from Craspedolepta spp. (Psylloidea: Aphalaridae)

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