Percorrer por autor "Deidda, Antonio"
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- Diversity of Phytophthora Species from Declining Mediterranean Maquis Vegetation, including Two New Species, Phytophthora crassamura and P. ornamentata sp nov.Publication . Scanu, Bruno; Linaldeddu, Benedetto T.; Deidda, Antonio; Jung, ThomasThe Mediterranean basin is recognized as a global biodiversity hotspot accounting for more than 25,000 plant species that represent almost 10% of the world's vascular flora. In particular, the maquis vegetation on Mediterranean islands and archipelagos constitutes an important resource of the Mediterranean plant diversity due to its high rate of endemism. Since 2009, a severe and widespread dieback and mortality of Quercus ilex trees and several other plant species of the Mediterranean maquis has been observed in the National Park of La Maddalena archipelago (northeast Sardinia, Italy). Infected plants showed severe decline symptoms and a significant reduction of natural regeneration. First studies revealed the involvement of the highly invasive wide-host range pathogen Phytophthora cinnamomi and several fungal pathogens. Subsequent detailed research led to a better understanding of these epidemics showing that multiple Phytophthora spp. were involved, some of them unknown to science. In total, nine Phytophthora species were isolated from rhizosphere soil samples collected from around symptomatic trees and shrubs including Asparagus albus, Cistus sp., Juniperus phoenicea, J. oxycedrus, Pistacia lentiscus and Rhamnus alaternus. Based on morphological characters, growth-temperature relations and sequence analysis of the ITS and cox1 gene regions, the isolates were identified as Phytophthora asparagi, P. bilorbang, P. cinnamomi, P. cryptogea, P. gonapodyides, P. melonis, P. syringae and two new Clade 6 taxa which are here described as P. crassamura sp. nov. and P. ornamentata sp. nov. Pathogenicity tests supported their possible involvement in the severe decline that is currently threatening the Mediterranean maquis vegetation in the La Maddalena archipelago.
- Preserving the biologically coherent generic concept of , "plant destroyer".Publication . Brasier, Clive M.; Grünwald, Niklaus J.; Bourret, Tyler B.; Govers, Francine; Scanu, Bruno; Cooke, David E. L.; Bose, Tanay; Hawksworth, David L.; Abad, Z Gloria; Albarracin, M. Victoria; Alsultan, Wael; Altamirano-Junqueira, Astrid E; Arifin, Arild R.; Arnet, Matthew J.; Aumentado, Herbert Dustin R.; Bakonyi, József; Belisle, Wei H.; Benigno, Alessandra; Bienapfl, John C.; Bilodeau, Guillaume J; Blair, Jaime E.; Botella, Leticia; Brandano, Andrea; Cacciola, Santa Olga; Carbone, Ignazio; Castroagudin, Vanina L.; Chaendaekattu, Narayanan; Consford, Jonathan D.; Corcobado, Tamara; Covey, Paul A.; Daniels, Hazel A.; Deidda, Antonio; Dorrance, Anne E.; Dort, Erika N.; Drenth, André; Drizou, Fryni; Evangelisti, Edouard; Fajardo, Sebastian N.; Fang, Yufeng; Ference, Christopher M.; Frankel, Susan J.; Goss, Erica M.; Guest, David I.; Hardy, Giles E. S. J.; Harris, Anna R. H.; Hawku, Mehari Desta; Heungens, Kurt; Hong, Chuanxue; Horner, Ian J.; Jung, Marília Horta; Iyanda, Olumayowa J.; Jamieson, Brittney-Aidan; Jeffers, Steven N.; Judelson, Howard S.; Junaid, Muhammad; Kalogeropoulou, Eleni; Kamoun, Sophien; Kang, Seogchan; Kasuga, Takao; Kudláček, Tomáš; LeBoldus, Jared; Lee, Christopher A.; Li, DeWei; Llanos, Alejandro K.; Lopez-Nicora, Horacio D.; Machado, Helena; di San Lio, Gaetano Magnano; Maia, Cristiana; Mandal, Kajal; Manosalva, Patricia; Martin, Frank N.; Matson, Michael E H; McDougal, Rebecca L.; McDowell, John M.; Michelmore, Richard W.; Milenković, Ivan; Moricca, Salvatore; Mostowfizadeh-Ghalamfarsa, Reza; Nagy, Zoltán Á.; Nikolaeva, Ekaterina V.; Ortega-López, Paula; Paap, Trudy; Parada-Rojas, Camilo H.; Hand, Francesca Peduto; Pérez-Sierra, Ana; Pettersson, Martin; Prasad, Pramod; Puig, Alina S.; Raco, Milica; Rajput, Nasir A.; Ristaino, Jean B.; Rooney-Latham, Suzanne; Seidl, Michael F.; Shamoun, Simon F.; Solla, Alejandro; Spies, Christoffel F. J.; Sudermann, Martha A.; Swiecki, Tedmund J.; Tian, Miaoying; Tripathy, Sucheta; Uematsu, Seiji; Van Poucke, Kris; Vichou, Aikaterini E.; Walter, Monika; Webber, Joan F.; Williams, Nari M.; Wingfield, Michael J.; Yadav, Dhananjay; Yang, Xiao; Jung, ThomasPhytophthora is a long-established, well-known, and globally important genus of plant pathogens. Phylogenetic evidence has shown that the biologically distinct, obligate biotrophic downy mildews evolved from Phytophthora at least twice. Because, cladistically, this renders Phytophthora “paraphyletic,” it has been proposed that Phytophthora evolutionary clades be split into multiple genera (Crous et al. 2021; Runge et al. 2011; Thines 2023, 2024). In this letter, we review arguments for the retention of the generic name Phytophthora with a broad circumscription made by Brasier et al. (2022) and by many delegates at an open workshop organized by The American Phytopathological Society. We present our well-considered responses to the genus splitting proposals, both in general terms and in terms of the specific proposals for new genera, alongside new information regarding the biological properties and mode of origin of the Phytophthora clades. We consider that the proposals are mostly non-rigorous and not supported by the scientific evidence. Further, given (i) the apparent lack of any distinguishing biological characteristics (synapomorphies) between the Phytophthora clades; (ii) the fundamental monophyly of Phytophthora in the original Haeckelian sense (Haeckel 1877); (iii) the fact that paraphyly is not a justification for taxonomic splitting; and (iv) the considerable likely damage to effective scientific communication and disease management from an unnecessary breakup of the genus, we report that workshop delegates voted unanimously in favor of preserving the current generic concept and for seeking endorsement of this view by a working group of the International Commission on the Taxonomy of Fungi.