Influence of ‘Candidatus Liberibacter asiaticus’ infection on the susceptibility of Asian citrus psyllid, Diaphorina citri to Bacillus thuringiensis pesticidal proteins, Mpp51Aa1 and Cry1Ba1

Kishk, Abdelaziz; Tavares, Clebson dos Santos; Mishra, Ruchir; Bonning, Bryony C.; Killiny, Nabil

doi:10.1016/j.jip.2023.107972

Cited by 4 publications

(1 citation statement)

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“…Huanglongbing (HLB), commonly referred to as citrus greening disease, stands as one of the most destructive and challenging threats to global citrus cultivation 1‐3 . This devastating disease has left an indelible mark on the citrus industry, causing significant economic losses and ecological disturbances in affected regions 4 .…”

Section: Introductionmentioning

confidence: 99%

Effect of tree height and spraying methods on Diaphorina citri kuwayama endosymbionts in the context of Huanglongbing disease management in citrus orchards

Hussain,

Zhong,

Tao

et al. 2023

Pest Management Science

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BACKGROUNDHuanglongbing (caused by Candidatus Liberibacter asiaticus) is the most damaging disease of citrus around the world. This study investigated the effects of citrus tree age on Diaphorina citri Kuwayama mortality, endosymbiont responses, and Huanglongbing distribution.RESULTSThe results reveal that the age of citrus trees plays a significant role in psyllid mortality. Notably, four‐year‐old plants exhibited higher psyllid mortality (31.50%) compared to thirteen‐year‐old trees (9.10% and 0.09%, respectively). Our findings also revealed that psyllids from both 4 and 13‐year‐old citrus trees carried Candidatus Carsonella ruddii species and Wolbachia, the primary and secondary endosymbionts, respectively. Surprisingly, infection rates of these endosymbionts remained consistent across different age groups, as confirmed by qPCR analysis. Furthermore, our study highlights the significance of tree height as a proxy for tree age in influencing Huanglongbing occurrence. Specifically, 4‐year‐old trees subjected to the US‐SMART mechanical sprayer for citrus psyllid control demonstrated effective disease management compared to 13‐year‐old trees treated with handheld gun sprayers. Additionally, the investigation explored the impact of tree height on HLB distribution. In four‐year‐old trees, no significant correlation between HLB disease and tree height was observed, potentially due to effective spray coverage. However, in thirteen‐year‐old trees, a negative correlation between tree height and HLB disease was evident.CONCLUSIONThis research provides valuable insights into the complex interaction between citrus tree age, psyllid endosymbionts responses, and HLB distribution. These results emphasize effective HLB management strategies, especially in orchards with diverse tree age populations, ultimately contributing to the long‐term sustainability of citrus cultivation.This article is protected by copyright. All rights reserved.

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Section: Introductionmentioning

confidence: 99%