Geographic Distribution and Host Range of Lethal Bronzing Associated with Phytoplasma Subgroup 16SrIV-D on Palms in Southern Louisiana

Ferguson, Mary Helen; Singh, Raghuwinder; Cook, M. E.; Burks, Timothy; Ong, Kevin

doi:10.1094/php-06-20-0046-s

Cited by 5 publications

(2 citation statements)

References 11 publications

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“…For that reason, phytoplasma strains associated with LY are often referred to as members of group 16SrIV, subgroup A (Lee et al, 1998), instead of having a conventional scientific name, although 'Candidatus Phytoplasma palmae' has also been proposed as a name for the taxon (Bertaccini et al, 2022). So far, the cixiid planthopper Haplaxius crudus Van Duzee is the only proven vector of this phytoplasma subgroup (Dzido et al, 2020), nevertheless, additional putative vectors of group 16SrIV phytoplasmas have also been discovered (Brown et al, 2006;Ramos-Hernández et al, 2020;Fernández-Barrera et al, 2022).…”

Section: Methodsmentioning

confidence: 99%

“…However, group 16SrIV encloses at least five other closely related phytoplasma subgroups (Palma-Cancino, 2020), including subgroup 16SrIV-D, which is associated with Texas Phoenix palm decline (TPPD, syn. lethal bronzing), another serious LY-like disease which also affects palm species of both economic and ornamental importance (Bahder et al, 2019;Ferguson et al, 2020;Palma-Cancino et al, 2020). In fact, subgroup 16SrIV-D phytoplasmas are considered by some to represent an entirely different species from 'Ca.…”

Section: Evidence Of Susceptibility Of Royal Palms To Ly and Other Ly...mentioning

confidence: 99%

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History of lethal yellowing with emphasis on the susceptibility of royal palms (Roystonea spp.)

PALMA CANCINO,

Ramos Hernández,

Ortiz garcía

2023

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Objective: To explore the available literature relating to lethal yellowing (LY) in order to assess the susceptibility of royal palms (Roystonea spp.) to this disease. Design/methodology/approach: Bibliographic material in English and Spanish was consulted in physical and digital libraries in search of unequivocal and plausible LY reports in Roystonea palms. Information gathered was then reviewed and discussed. Results: We found evidence of LY susceptibility of royal palms dating back to the beginning of the 20th century. In addition to Mexico, possible LY outbreaks in Roystonea palms might have occurred in Cuba, Haiti, the Dominican Republic, and Antigua and Barbuda. Limitations on study/implications: Reports of LY predating molecular diagnostic tools, particularly in Roystonea palms, cannot be assumed as unequivocal evidence of susceptibility to this disease. Findings/conclusions: Royal palms have shown evidence of susceptibility to the LY pathogen throughout the Caribbean Basin. In light of this, their potential role as long-term phytoplasma reservoirs should be examined in order to better comprehend this disease’s pathosystem

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Section: Methodsmentioning

confidence: 99%

Section: Evidence Of Susceptibility Of Royal Palms To Ly and Other Ly...mentioning

confidence: 99%

History of lethal yellowing with emphasis on the susceptibility of royal palms (Roystonea spp.)

PALMA CANCINO,

Ramos Hernández,

Ortiz garcía

2023

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The decline and death of Canary Island date palms in México City is associated with subgroup 16SrIV-D phytoplasmas

Ortiz-García,

Alvarado-Rosales,

Oropeza

et al. 2024

Australasian Plant Pathol.

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Acquisition and Transmission of the Lethal Bronzing Phytoplasma byHaplaxius crudusUsing Infected Palm Spear Leaves and Artificial Feeding Media

et al. 2022

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Lethal Bronzing (LB) is a fatal palm disease caused by the phytoplasma ‘Candidatus Phytoplasma aculeata’. This disease causes significant economic losses in palm industries and landscapes. The American palm cixiid, Haplaxius crudus, recently was identified as the vector of the phytoplasma. However, knowledge about LB phytoplasma transmission is limited due to the lack of a method to generate phytoplasma-infected insects in the laboratory. In this study, the acquisition and transmission of the LB phytoplasma by H. crudus were investigated. Successful acquisitions of the phytoplasma by H. crudus were observed at two days of the acquisition access period on LB-infected palm spear leaves. Analyses revealed increased phytoplasma infection rates of H. crudus with longer acquisition access periods and latent periods. A significantly higher phytoplasma infection rate was shown after various acquisition access periods and latent periods than the infection rate of the field-collected H. crudus population. Transmission of the phytoplasma from LB-infected spear leaves to sucrose media by H. crudus also was observed using digital PCR assays. These results further support the vector status of H. crudus and offer valuable information to understand LB phytoplasma transmission. Additionally, these results generate a critical baseline for future LB phytoplasma-vector research by providing a way to generate vectors with high phytoplasma infection rates in the laboratory setting.

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Geographic Distribution and Host Range of Lethal Bronzing Associated with Phytoplasma Subgroup 16SrIV-D on Palms in Southern Louisiana

Cited by 5 publications

References 11 publications

History of lethal yellowing with emphasis on the susceptibility of royal palms (Roystonea spp.)

History of lethal yellowing with emphasis on the susceptibility of royal palms (Roystonea spp.)

The decline and death of Canary Island date palms in México City is associated with subgroup 16SrIV-D phytoplasmas

Acquisition and Transmission of the Lethal Bronzing Phytoplasma byHaplaxius crudusUsing Infected Palm Spear Leaves and Artificial Feeding Media

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