Identification of ‘Candidatus Phytoplasma’ species in 'huanglongbing' infected citrus orchards in the Caribbean
| Autor: | Wayne Myrie, Maritza Luis-Pantoja, Francesco Pacini, Raphael Morillon, Eleonora Satta, Nicoletta Contaldo, Assunta Bertaccini, Camilo Paredes-Tomás, Youri Uneau |
|---|---|
| Přispěvatelé: | Luis-Pantoja M., Paredes-Tomas C., Uneau Y., Myrie W., Morillon R., Satta E., Contaldo N., Pacini F., Bertaccini A. |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Citrus Candidatus Liberibacter Diaphorina citri Citrus greening Plant Science Horticulture Biology 01 natural sciences Phytoplasme 03 medical and health sciences Maladie des plantes Mixed infection Cultivar Candidatus Phytoplasma Molecular detection Pathogen H20 - Maladies des plantes food and beverages biology.organism_classification Maladie bactérienne 030104 developmental biology Insect vector Phytoplasma Bactérie gram négatif Candidatus Rootstock Agronomy and Crop Science Phloematic bacteria 010606 plant biology & botany |
| Zdroj: | European Journal of Plant Pathology |
| ISSN: | 1573-8469 0929-1873 |
| Popis: | “Huanglongbing” (HLB) is one of the most devastating diseases of citrus orchards worldwide. Samples from 183 citrus plants of different cultivars and rootstock/cultivar combinations, showing HLB symptoms in three Caribbean countries (Cuba, Jamaica, and Guadeloupe-France), were collected to verify the possible co-infection of ‘Candidatus Phytoplasma’ and ‘Candidatus Liberibacter’ species. The 64% of the samples resulted positive to the ‘Ca. L. asiaticus’ and the 27% to diverse ‘Ca. Phytoplasma’-related species, moreover about the 14% of the samples infected with ‘Ca. Liberibacter’ were also found positive to phytoplasmas, indicating the presence of mixed infection especially in the orchards located in Cuba. Moreover, in one of the samples from Jamaica mixed phytoplasma infection was detected. Moreover the detection of only phytoplasmas in 11 symptomatic citrus samples collected from Cuba and Guadeloupe without ‘Ca. Liberibacter’ detection, confirmed that the symptomatology cannot be the sole criterium to discriminate between the presence of the two pathogens, and molecular detection is necessary to identify single or mixed infections. Diaphorina citri insects collected from Cuba and Guadeloupe resulted infected with ‘Ca. L. asiaticus’ confirming its active role in the dissemination of the pathogen. Only one insect of the Cicadidae family, collected in Guadeloupe, was found positive for phytoplasma presence. Considering that the phytoplasmas belonging to some ‘Candidatus species’ were detected in the three countries in different citrus varieties, a relevant role as phytoplasma reservoir can be attribute to citrus orchards. |
| Databáze: | OpenAIRE |
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