Evaluation of a paper by Guarnaccia et al. (2017) on the first report of Phyllosticta citricarpa in Europe
Abstract The Plant Health Panel reviewed the paper by Guarnaccia et al. () and compared their findings with previous predictions on the establishment of Phyllosticta citricarpa. Four species of Phyllosticta were found by Guarnaccia et al. () in Europe. P. citricarpa and P. capitalensis are well‐defi...
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
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| Series: | EFSA Journal |
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| Online Access: | https://doi.org/10.2903/j.efsa.2018.5114 |
| _version_ | 1818722300256583680 |
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| author | EFSA Panel on Plant Health (EFSA PLH Panel) Michael Jeger Claude Bragard David Caffier Thierry Candresse Elisavet Chatzivassiliou Katharina Dehnen‐Schmutz Gianni Gilioli Jean‐Claude Grégoire Josep Anton Jaques Miret Alan MacLeod Maria Navajas Navarro Björn Niere Stephen Parnell Roel Potting Trond Rafoss Vittorio Rossi Gregor Urek Ariena Van Bruggen Wopke Van Der Werf Jonathan West Stephan Winter Richard Baker Bart Fraaije Antonio Vicent Carsten Behring Olaf Mosbach Schulz Giuseppe Stancanelli |
| author_facet | EFSA Panel on Plant Health (EFSA PLH Panel) Michael Jeger Claude Bragard David Caffier Thierry Candresse Elisavet Chatzivassiliou Katharina Dehnen‐Schmutz Gianni Gilioli Jean‐Claude Grégoire Josep Anton Jaques Miret Alan MacLeod Maria Navajas Navarro Björn Niere Stephen Parnell Roel Potting Trond Rafoss Vittorio Rossi Gregor Urek Ariena Van Bruggen Wopke Van Der Werf Jonathan West Stephan Winter Richard Baker Bart Fraaije Antonio Vicent Carsten Behring Olaf Mosbach Schulz Giuseppe Stancanelli |
| author_sort | EFSA Panel on Plant Health (EFSA PLH Panel) |
| collection | DOAJ |
| description | Abstract The Plant Health Panel reviewed the paper by Guarnaccia et al. () and compared their findings with previous predictions on the establishment of Phyllosticta citricarpa. Four species of Phyllosticta were found by Guarnaccia et al. () in Europe. P. citricarpa and P. capitalensis are well‐defined species, with P. citricarpa recorded for the first time in Europe, confirming predictions by Magarey et al. () and EFSA (2008, 2014, 2016) that P. citricarpa can establish in some European citrus‐growing regions. Two new species P. paracitricarpa and P. paracapitalensis were also described, with P. paracitricarpa (found only in Greece) shown to be pathogenic on sweet orange fruits. Genotyping of the P. citricarpa isolates suggests at least two independent introductions, with the population in Portugal being different from that present in Malta and Italy. P. citricarpa and P. paracitricarpa were isolated only from leaf litter in backyards. However, since P. citricarpa does not infect or colonise dead leaves, the pathogen must have infected the above living leaves in citrus trees nearby. Guarnaccia et al. () considered introduction to be a consequence of P. citricarpa having long been present or of illegal movement of planting material. In the Panel's view, the fruit pathway would be an equally or more likely origin. The authors did not report how surveys for citrus black spot (CBS) disease were carried out, therefore their claim that there was no CBS disease even where the pathogen was present is not supported by the results presented. From previous simulations, the locations where Guarnaccia et al. () found P. citricarpa or P. paracitricarpa were conducive for P. citricarpa establishment, with number of simulated infection events by pycnidiospores comparable to sites of CBS occurrence outside Europe. Preliminary surveys by National Plant Protection Organisations (NPPOs) have not confirmed so far the findings by Guarnaccia et al. () but monitoring is still ongoing. |
| first_indexed | 2024-12-17T20:52:26Z |
| format | Article |
| id | doaj.art-af00b3eb283741fc98dbb65e0e48e6ee |
| institution | Directory Open Access Journal |
| issn | 1831-4732 |
| language | English |
| last_indexed | 2024-12-17T20:52:26Z |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | EFSA Journal |
| spelling | doaj.art-af00b3eb283741fc98dbb65e0e48e6ee2022-12-21T21:32:59ZengWileyEFSA Journal1831-47322018-01-01161n/an/a10.2903/j.efsa.2018.5114Evaluation of a paper by Guarnaccia et al. (2017) on the first report of Phyllosticta citricarpa in EuropeEFSA Panel on Plant Health (EFSA PLH Panel)Michael JegerClaude BragardDavid CaffierThierry CandresseElisavet ChatzivassiliouKatharina Dehnen‐SchmutzGianni GilioliJean‐Claude GrégoireJosep Anton Jaques MiretAlan MacLeodMaria Navajas NavarroBjörn NiereStephen ParnellRoel PottingTrond RafossVittorio RossiGregor UrekAriena Van BruggenWopke Van Der WerfJonathan WestStephan WinterRichard BakerBart FraaijeAntonio VicentCarsten BehringOlaf Mosbach SchulzGiuseppe StancanelliAbstract The Plant Health Panel reviewed the paper by Guarnaccia et al. () and compared their findings with previous predictions on the establishment of Phyllosticta citricarpa. Four species of Phyllosticta were found by Guarnaccia et al. () in Europe. P. citricarpa and P. capitalensis are well‐defined species, with P. citricarpa recorded for the first time in Europe, confirming predictions by Magarey et al. () and EFSA (2008, 2014, 2016) that P. citricarpa can establish in some European citrus‐growing regions. Two new species P. paracitricarpa and P. paracapitalensis were also described, with P. paracitricarpa (found only in Greece) shown to be pathogenic on sweet orange fruits. Genotyping of the P. citricarpa isolates suggests at least two independent introductions, with the population in Portugal being different from that present in Malta and Italy. P. citricarpa and P. paracitricarpa were isolated only from leaf litter in backyards. However, since P. citricarpa does not infect or colonise dead leaves, the pathogen must have infected the above living leaves in citrus trees nearby. Guarnaccia et al. () considered introduction to be a consequence of P. citricarpa having long been present or of illegal movement of planting material. In the Panel's view, the fruit pathway would be an equally or more likely origin. The authors did not report how surveys for citrus black spot (CBS) disease were carried out, therefore their claim that there was no CBS disease even where the pathogen was present is not supported by the results presented. From previous simulations, the locations where Guarnaccia et al. () found P. citricarpa or P. paracitricarpa were conducive for P. citricarpa establishment, with number of simulated infection events by pycnidiospores comparable to sites of CBS occurrence outside Europe. Preliminary surveys by National Plant Protection Organisations (NPPOs) have not confirmed so far the findings by Guarnaccia et al. () but monitoring is still ongoing.https://doi.org/10.2903/j.efsa.2018.5114leaf litterbackyardcitrus black spotPhyllosticta citricarpaPhyllosticta paracitricarpaEuropean Union |
| spellingShingle | EFSA Panel on Plant Health (EFSA PLH Panel) Michael Jeger Claude Bragard David Caffier Thierry Candresse Elisavet Chatzivassiliou Katharina Dehnen‐Schmutz Gianni Gilioli Jean‐Claude Grégoire Josep Anton Jaques Miret Alan MacLeod Maria Navajas Navarro Björn Niere Stephen Parnell Roel Potting Trond Rafoss Vittorio Rossi Gregor Urek Ariena Van Bruggen Wopke Van Der Werf Jonathan West Stephan Winter Richard Baker Bart Fraaije Antonio Vicent Carsten Behring Olaf Mosbach Schulz Giuseppe Stancanelli Evaluation of a paper by Guarnaccia et al. (2017) on the first report of Phyllosticta citricarpa in Europe EFSA Journal leaf litter backyard citrus black spot Phyllosticta citricarpa Phyllosticta paracitricarpa European Union |
| title | Evaluation of a paper by Guarnaccia et al. (2017) on the first report of Phyllosticta citricarpa in Europe |
| title_full | Evaluation of a paper by Guarnaccia et al. (2017) on the first report of Phyllosticta citricarpa in Europe |
| title_fullStr | Evaluation of a paper by Guarnaccia et al. (2017) on the first report of Phyllosticta citricarpa in Europe |
| title_full_unstemmed | Evaluation of a paper by Guarnaccia et al. (2017) on the first report of Phyllosticta citricarpa in Europe |
| title_short | Evaluation of a paper by Guarnaccia et al. (2017) on the first report of Phyllosticta citricarpa in Europe |
| title_sort | evaluation of a paper by guarnaccia et al 2017 on the first report of phyllosticta citricarpa in europe |
| topic | leaf litter backyard citrus black spot Phyllosticta citricarpa Phyllosticta paracitricarpa European Union |
| url | https://doi.org/10.2903/j.efsa.2018.5114 |
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