Economic impact of Huanglongbing on orange production

Costa, Gustavo Vaz da; Neves, Carmen Sílvia Vieira Janeiro; Bassanezi, R. B.; Leite, Rui Pereira; Telles, Tiago Santos

doi:10.1590/0100-29452021472

Cited by 7 publications

(4 citation statements)

References 30 publications

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“…Previous studies have examined the effect of HLB on citrus production by looking at yield loss (Bassanezi et al 2011;Neupane et al 2016), whereas others have utilized economic impact as a measure and determinant of the total effect of HLB infection (Costa et al 2021;Court et al 2020;Farnsworth et al 2014;Hodges et al 2018;Hodges and Spreen 2012;Rahmani and Hodges 2009). These studies all indicated the various and significant effects associated with HLB on the underlying economic impact.…”

Section: Discussionmentioning

confidence: 99%

Structural changes in Florida citrus production, 1980-2021 and associated consequences of weather events and disease.

Taylor,

Gottwald,

Adkins

2023

Journal of Citrus Pathology

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Section: Discussionmentioning

confidence: 99%

Structural changes in Florida citrus production, 1980-2021 and associated consequences of weather events and disease.

Taylor,

Gottwald,

Adkins

2023

Journal of Citrus Pathology

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“…The presence of the pathogen was confirmed through the amplification of specific amplicon size, and sequence analysis demonstrated a 99% identity match with CLas in the GenBank database, confirming its prevalence as the causal organism of citrus greening in Bangladesh. Costa et al (2021), conducted a study in the Paranavaí micro-region of Paraná, Brazil, to determine the prevalence and economic consequences of HLB. Data provided by the Paraná Agribusiness Defense Agency enabled the estimation of production losses caused by the disease.…”

Section: Figure 1hlb-infected Tree With Symptoms Of Blotchy Mottling ...mentioning

confidence: 99%

Decoding Huanglongbing: Understanding the Origins, Impacts, and Remedies for Citrus Greening

Usman,

Saleem,

Shafique

2023

Phytopathogenomics and Disease Control

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Citrus cultivation is a vital component of the agricultural sector, offering significant nutritional and economic benefits. However, citrus plants face numerous disorders, including Huanglongbing (HLB), also known as citrus greening disease. HLB is a devastating disease caused by the bacterial species Candidatus Liberibacter asiaticus (Las), primarily transmitted by the citrus psyllid and grafting. Investigating the distribution and molecular characterization of HLB in various citrus varieties and psyllid populations is crucial. Molecular techniques and iodine starch staining have been used to detect HLB symptoms. Several studies have been designed to determine the incidence and severity of HLB symptoms in different citrus varieties and locations and estimate the psyllid population density in different citrus varieties. Furthermore, these studies established a correlation between the population of psyllids and the incidence and severity of HLB in different locations and these findings suggest a potential link between psyllid infestation and the prevalence of HLB. This study highlights the prevalence of HLB in various locations and varieties, providing insights into the distribution, severity, and correlation between psyllid populations and HLB incidence. The reliability of PCR testing for Las infection confirms its effectiveness. Such findings suggest implementing integrated pest management strategies, including monitoring and controlling psyllid populations, removing infected plants, and using certified disease-free planting materials to prevent HLB spread.

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“…The three ‘ Ca . Liberibacter’ species associated with HLB are spread across several countries in Asia, Africa, and the Americas ( EPPO Global Database, 2023 ), where they are causing devastation to millions of citrus trees in major citrus-producing countries ( Das, 2008 ; Das et al., 2014 ; Neupane et al., 2016 ; da Costa et al., 2021 ). At present, none of these three bacteria have been reported in the Mediterranean Basin or Australia.…”

Section: Introductionmentioning

confidence: 99%

Real-time on-site detection of the three ‘Candidatus Liberibacter’ species associated with HLB disease: a rapid and validated method

Morán,

Herrero-Cervera,

Carvajal-Rojas

et al. 2023

Front. Plant Sci.

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Huanglongbing (HLB) is a devastating disease that affects all commercial citrus species worldwide. The disease is associated with bacteria of three species of the genus ‘Candidatus Liberibacter’ transmitted by psyllid vectors. To date, HLB has no cure, so preventing its introduction into HLB-free areas is the best strategy to control its spread. For that, the use of accurate, sensitive, specific, and reliable detection methods is critical for good integrated management of this serious disease. This study presents a new real-time recombinase polymerase amplification (RPA) protocol able to detect the three ‘Ca. Liberibacter’ species associated with HLB in both plant and insect samples, validated according to European and Mediterranean Plant Protection Organization (EPPO) guidelines and tested on 365 samples from nine different geographic origins. This new protocol does not require nucleic acid purification or specialized equipment, making it ideal to be used under field conditions. It is based on specific primers and probe targeting a region of fusA gene, which shows a specificity of 94%–100%, both in silico and in vitro, for the ‘Ca. Liberibacter’ species associated with HLB. The analytical sensitivity of the new protocol is excellent, with a reliable detection limit in the order of 101 copies per microliter in HLB-infected plant and insect material. The repeatability and reproducibility of the new methods showed consistent results. Diagnostic parameters of the new RPA protocol were calculated and compared with the gold standard technique, a quantitative real-time PCR, in both crude extracts of citrus plants and insect vectors. The agreement between the two techniques was almost perfect according to the estimated Cohen’s kappa index, with a diagnostic sensitivity and specificity of 83.89% and 100%, respectively, and a relative accuracy of 91.59%. Moreover, the results are obtained in less than 35 min. All these results indicate the potential of this new RPA protocol to be implemented as a reliable on-site detection kit for HLB due to its simplicity, speed, and portability.

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Economic impact of Huanglongbing on orange production

Cited by 7 publications

References 30 publications

Structural changes in Florida citrus production, 1980-2021 and associated consequences of weather events and disease.

Structural changes in Florida citrus production, 1980-2021 and associated consequences of weather events and disease.

Decoding Huanglongbing: Understanding the Origins, Impacts, and Remedies for Citrus Greening

Real-time on-site detection of the three ‘Candidatus Liberibacter’ species associated with HLB disease: a rapid and validated method

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