Nematode parasites of coconut and other palms.

Griffith, R.; Giblin-Davis, Robin M.; Koshy, P. K.; Sosamma, V. K.; Kanzaki, Natsumi

doi:10.1079/9781786391247.0504

Cited by 2 publications

(4 citation statements)

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(4 reference statements)

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“…Many not regulated palm tree species (Arecaceae) that are regularly imported into the EU with roots have been reported as hosts of R. similis (Griffith et al., ; Dixon and Anderson, ) and have also been frequently intercepted in recent years ( Areca, Caryota, Howea, Licuala, Livistona ).…”

Section: Data and Methodologiesmentioning

confidence: 99%

“…Many host plant species of R. similis that are not listed in the Council Directive 2000/29/EC (e.g. Arecaceae) are regularly imported into the EU with roots (Griffith et al., ; Dixon and Anderson, ) and have been frequently intercepted in recent years ( Areca, Caryota, Howea, Licuala, Livistona ). Because R. similis in this case is not regulated, no action is taken, therefore values for scenarios A0 and A1 are zero.…”

Section: Appendix a – Formal Model And Parameters Estimatesmentioning

confidence: 99%

“…R. similis may have negative impact also on flower production, size of potted plants and consequently on market value of many ornamental plants such as Anthurium, Calathea and Dracena (Uchida et al., ; Volcy, ). It may also cause small, oblong root lesions of palms which are subsequently aggregated and consequently resulting in extensive rotting of roots (Griffith et al., ). As a very serious pest of the parlour palm, Chamaedorea elegans, this nematode can very negatively affect their commercial production (NEMAPLEX online, accessed on 13 April 2017).…”

Section: Appendix a – Formal Model And Parameters Estimatesmentioning

confidence: 99%

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Pest risk assessment of Radopholus similis for the EU territory

Jeger¹,

Bragard²,

Caffier³

et al. 2017

EFS2

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The Panel on Plant Health performed a pest risk assessment on Radopholus similis, the burrowing nematode for the EU. The quantitative assessment focused on entry, establishment, spread and impact on tropical and subtropical ornamental host plants, the main pathways for entry of R. similis into the EU. Infested consignments are expected to enter the risk assessment area on ornamentals under all scenarios. For citrus, which is a closed pathway for entry, outdoor establishment was assessed. Establishment may only take place after successful transfer from ornamental plants to citrus production systems. This event is called 'shift' in this assessment, to indicate that this is an unusual transfer. It has been estimated that establishment of this nematode in the open field in the EU citrus production areas under current temperatures is possible in most parts of the citrus production area in the EU. Temperature conditions will prevent the nematode from establishing only in the northernmost citrus areas and at higher altitudes in the south. Host plants for planting originating from infested places of production (greenhouses) within the risk assessment area are considered the main pathway for spread within the risk assessment area. Under current climatic conditions, the population of R. similis is not expected to reach damaging population levels in the open field. In case of increased temperatures due to global warming, the nematode population may reach damaging levels in very few places outdoors. Currently, main impact is considered for ornamental greenhouse production in the risk assessment area. Impact will be either caused by direct plant growth reductions or loss due to phytosanitary measures applied on regulated plants. Despite the fact that R. similis is globally considered as one of the most destructive plant parasitic nematodes, the impact in the risk assessment area is considered low.

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“…Similarly, species of the genus Rhynchophorus , called palm weevils, cause substantial direct damage to several palms of economic importance, such as the edible date palm, oil palm, coconut palm, and the ornamental Canary Islands date palm [ 5 ]. They also damage palms indirectly through vectoring diseases or creating wounds that allow the entry of other pathogens [ 9 , 10 ]. Palm weevils also negatively affect the aesthetic value of palms used in urban landscape design [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Microsatellite Variation in the Most Devastating Beetle Pests (Coleoptera: Curculionidae) of Agricultural and Forest Crops

Manee

Al-Shomrani²,

Altammami³

et al. 2022

IJMS

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Weevils, classified in the family Curculionidae (true weevils), constitute a group of phytophagous insects of which many species are considered significant pests of crops. Within this family, the red palm weevil (RPW), Rhynchophorus ferrugineus, has an integral role in destroying crops and has invaded all countries of the Middle East and many in North Africa, Southern Europe, Southeast Asia, Oceania, and the Caribbean Islands. Simple sequence repeats (SSRs), also termed microsatellites, have become the DNA marker technology most applied to study population structure, evolution, and genetic diversity. Although these markers have been widely examined in many mammalian and plant species, and draft genome assemblies are available for many species of true weevils, very little is yet known about SSRs in weevil genomes. Here we carried out a comparative analysis examining and comparing the relative abundance, relative density, and GC content of SSRs in previously sequenced draft genomes of nine true weevils, with an emphasis on R. ferrugineus. We also used Illumina paired-end sequencing to generate draft sequence for adult female RPW and characterized it in terms of perfect SSRs with 1–6 bp nucleotide motifs. Among weevil genomes, mono- to trinucleotide SSRs were the most frequent, and mono-, di-, and hexanucleotide SSRs exhibited the highest GC content. In these draft genomes, SSR number and genome size were significantly correlated. This work will aid our understanding of the genome architecture and evolution of Curculionidae weevils and facilitate exploring SSR molecular marker development in these species.

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Nematode parasites of coconut and other palms.

Cited by 2 publications

References 0 publications

Pest risk assessment of Radopholus similis for the EU territory

Microsatellite Variation in the Most Devastating Beetle Pests (Coleoptera: Curculionidae) of Agricultural and Forest Crops

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