Polyphasic characterization of Xanthomonas axonopodis pv. allii associated with outbreaks of bacterial blight on three allium species in the Mascarene Archipelago
Based on the number of new reports during the last two decades, bacterial blight of onion (Allium cepa) is considered an emerging disease. The causal agent, Xanthomonas axonopodis pv. allii, is pathogenic to several Allium species after inoculation, but outbreaks worldwide have been primarily reported on onion. We describe a unique epidemiological situation in Réunion Island, France, with concomitant outbreaks on three Allium species, onion, leek (A. porrum), and garlic (A. sativum). There was no host specialization within Allium spp. among strains associated with the three host species. Based on amplified fragment length polymorphism (AFLP) and restriction fragment length polymorphism, strains associated with these outbreaks in Réunion Island were highly related genetically to strains isolated from diseased plant samples and contaminated seed lots in the neighboring island of Mauritius, where the disease has occurred since 1984. All AFLP haplotypes were identified as X. axonopodis pv. allii based on polymerase chain reaction analysis using specific primers, biochemical tests, and/or pathogenicity tests. Two genetically related groups of strains (A and B) that can be distinguished by AFLP, differential utilization of three carbon sources, and xanthomonadin pigment production were detected initially after establishment of the pathogen. In less than 10 years after the establishment of the pathogen there was nearly an extinction of group A strains in Réunion Island, suggesting differences in fitness between strains in the two groups.
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Subjects: | H20 - Maladies des plantes, Allium, Xanthomonas, épidémiologie, transmission des maladies, semence, http://aims.fao.org/aos/agrovoc/c_277, http://aims.fao.org/aos/agrovoc/c_8455, http://aims.fao.org/aos/agrovoc/c_2615, http://aims.fao.org/aos/agrovoc/c_2329, http://aims.fao.org/aos/agrovoc/c_6927, http://aims.fao.org/aos/agrovoc/c_6543, http://aims.fao.org/aos/agrovoc/c_3081, |
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dig-cirad-fr-5458122024-01-28T16:14:08Z http://agritrop.cirad.fr/545812/ http://agritrop.cirad.fr/545812/ Polyphasic characterization of Xanthomonas axonopodis pv. allii associated with outbreaks of bacterial blight on three allium species in the Mascarene Archipelago. Picard Yann, Roumagnac Philippe, Legrand Delphine, Humeau Laurence, Robène-Soustrade Isabelle, Chiroleu Frédéric, Gagnevin Lionel, Pruvost Olivier. 2008. Phytopathology, 98 (8) : 919-925.https://doi.org/10.1094/PHYTO-98-8-0919 <https://doi.org/10.1094/PHYTO-98-8-0919> Polyphasic characterization of Xanthomonas axonopodis pv. allii associated with outbreaks of bacterial blight on three allium species in the Mascarene Archipelago Picard, Yann Roumagnac, Philippe Legrand, Delphine Humeau, Laurence Robène-Soustrade, Isabelle Chiroleu, Frédéric Gagnevin, Lionel Pruvost, Olivier eng 2008 Phytopathology H20 - Maladies des plantes Allium Xanthomonas épidémiologie transmission des maladies semence http://aims.fao.org/aos/agrovoc/c_277 http://aims.fao.org/aos/agrovoc/c_8455 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_2329 http://aims.fao.org/aos/agrovoc/c_6927 La Réunion France http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 Based on the number of new reports during the last two decades, bacterial blight of onion (Allium cepa) is considered an emerging disease. The causal agent, Xanthomonas axonopodis pv. allii, is pathogenic to several Allium species after inoculation, but outbreaks worldwide have been primarily reported on onion. We describe a unique epidemiological situation in Réunion Island, France, with concomitant outbreaks on three Allium species, onion, leek (A. porrum), and garlic (A. sativum). There was no host specialization within Allium spp. among strains associated with the three host species. Based on amplified fragment length polymorphism (AFLP) and restriction fragment length polymorphism, strains associated with these outbreaks in Réunion Island were highly related genetically to strains isolated from diseased plant samples and contaminated seed lots in the neighboring island of Mauritius, where the disease has occurred since 1984. All AFLP haplotypes were identified as X. axonopodis pv. allii based on polymerase chain reaction analysis using specific primers, biochemical tests, and/or pathogenicity tests. Two genetically related groups of strains (A and B) that can be distinguished by AFLP, differential utilization of three carbon sources, and xanthomonadin pigment production were detected initially after establishment of the pathogen. In less than 10 years after the establishment of the pathogen there was nearly an extinction of group A strains in Réunion Island, suggesting differences in fitness between strains in the two groups. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/545812/1/document_545812.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1094/PHYTO-98-8-0919 10.1094/PHYTO-98-8-0919 http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=201547 info:eu-repo/semantics/altIdentifier/doi/10.1094/PHYTO-98-8-0919 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1094/PHYTO-98-8-0919 info:eu-repo/semantics/reference/purl/http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO-98-8-0919 |
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H20 - Maladies des plantes Allium Xanthomonas épidémiologie transmission des maladies semence http://aims.fao.org/aos/agrovoc/c_277 http://aims.fao.org/aos/agrovoc/c_8455 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_2329 http://aims.fao.org/aos/agrovoc/c_6927 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 H20 - Maladies des plantes Allium Xanthomonas épidémiologie transmission des maladies semence http://aims.fao.org/aos/agrovoc/c_277 http://aims.fao.org/aos/agrovoc/c_8455 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_2329 http://aims.fao.org/aos/agrovoc/c_6927 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 |
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H20 - Maladies des plantes Allium Xanthomonas épidémiologie transmission des maladies semence http://aims.fao.org/aos/agrovoc/c_277 http://aims.fao.org/aos/agrovoc/c_8455 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_2329 http://aims.fao.org/aos/agrovoc/c_6927 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 H20 - Maladies des plantes Allium Xanthomonas épidémiologie transmission des maladies semence http://aims.fao.org/aos/agrovoc/c_277 http://aims.fao.org/aos/agrovoc/c_8455 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_2329 http://aims.fao.org/aos/agrovoc/c_6927 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 Picard, Yann Roumagnac, Philippe Legrand, Delphine Humeau, Laurence Robène-Soustrade, Isabelle Chiroleu, Frédéric Gagnevin, Lionel Pruvost, Olivier Polyphasic characterization of Xanthomonas axonopodis pv. allii associated with outbreaks of bacterial blight on three allium species in the Mascarene Archipelago |
description |
Based on the number of new reports during the last two decades, bacterial blight of onion (Allium cepa) is considered an emerging disease. The causal agent, Xanthomonas axonopodis pv. allii, is pathogenic to several Allium species after inoculation, but outbreaks worldwide have been primarily reported on onion. We describe a unique epidemiological situation in Réunion Island, France, with concomitant outbreaks on three Allium species, onion, leek (A. porrum), and garlic (A. sativum). There was no host specialization within Allium spp. among strains associated with the three host species. Based on amplified fragment length polymorphism (AFLP) and restriction fragment length polymorphism, strains associated with these outbreaks in Réunion Island were highly related genetically to strains isolated from diseased plant samples and contaminated seed lots in the neighboring island of Mauritius, where the disease has occurred since 1984. All AFLP haplotypes were identified as X. axonopodis pv. allii based on polymerase chain reaction analysis using specific primers, biochemical tests, and/or pathogenicity tests. Two genetically related groups of strains (A and B) that can be distinguished by AFLP, differential utilization of three carbon sources, and xanthomonadin pigment production were detected initially after establishment of the pathogen. In less than 10 years after the establishment of the pathogen there was nearly an extinction of group A strains in Réunion Island, suggesting differences in fitness between strains in the two groups. |
format |
article |
topic_facet |
H20 - Maladies des plantes Allium Xanthomonas épidémiologie transmission des maladies semence http://aims.fao.org/aos/agrovoc/c_277 http://aims.fao.org/aos/agrovoc/c_8455 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_2329 http://aims.fao.org/aos/agrovoc/c_6927 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 |
author |
Picard, Yann Roumagnac, Philippe Legrand, Delphine Humeau, Laurence Robène-Soustrade, Isabelle Chiroleu, Frédéric Gagnevin, Lionel Pruvost, Olivier |
author_facet |
Picard, Yann Roumagnac, Philippe Legrand, Delphine Humeau, Laurence Robène-Soustrade, Isabelle Chiroleu, Frédéric Gagnevin, Lionel Pruvost, Olivier |
author_sort |
Picard, Yann |
title |
Polyphasic characterization of Xanthomonas axonopodis pv. allii associated with outbreaks of bacterial blight on three allium species in the Mascarene Archipelago |
title_short |
Polyphasic characterization of Xanthomonas axonopodis pv. allii associated with outbreaks of bacterial blight on three allium species in the Mascarene Archipelago |
title_full |
Polyphasic characterization of Xanthomonas axonopodis pv. allii associated with outbreaks of bacterial blight on three allium species in the Mascarene Archipelago |
title_fullStr |
Polyphasic characterization of Xanthomonas axonopodis pv. allii associated with outbreaks of bacterial blight on three allium species in the Mascarene Archipelago |
title_full_unstemmed |
Polyphasic characterization of Xanthomonas axonopodis pv. allii associated with outbreaks of bacterial blight on three allium species in the Mascarene Archipelago |
title_sort |
polyphasic characterization of xanthomonas axonopodis pv. allii associated with outbreaks of bacterial blight on three allium species in the mascarene archipelago |
url |
http://agritrop.cirad.fr/545812/ http://agritrop.cirad.fr/545812/1/document_545812.pdf |
work_keys_str_mv |
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_version_ |
1792496964900749312 |