{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T04:12:59Z","timestamp":1774930379048,"version":"3.50.1"},"reference-count":107,"publisher":"Scientific Societies","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Phytopathology\u00ae"],"published-print":{"date-parts":[[2025,6,1]]},"abstract":"<jats:p> Phytophthora 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 \u201cparaphyletic,\u201d it has been proposed that Phytophthora evolutionary clades be split into multiple genera ( Crous et\u00a0al. 2021 ; Runge et\u00a0al. 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\u00a0al. (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\u00a0 Phytophthora\u00a0in 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. <\/jats:p><jats:p> [Formula: see text] Copyright \u00a9 2025 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license . <\/jats:p>","DOI":"10.1094\/phyto-11-24-0372-le","type":"journal-article","created":{"date-parts":[[2025,3,12]],"date-time":"2025-03-12T14:21:01Z","timestamp":1741789261000},"page":"573-586","source":"Crossref","is-referenced-by-count":7,"title":["Preserving the Biologically Coherent Generic Concept of <i>Phytophthora<\/i>, \u201cPlant Destroyer\u201d"],"prefix":"10.1094","volume":"115","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2525-394X","authenticated-orcid":false,"given":"Clive M.","family":"Brasier","sequence":"first","affiliation":[{"name":"Forest Research, Alice Holt Lodge, Farnham, GU10 4LH, Surrey, U.K."}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1656-7602","authenticated-orcid":false,"given":"Niklaus J.","family":"Gr\u00fcnwald","sequence":"additional","affiliation":[{"name":"Horticultural Crops Disease and Pest Management Research Unit, U.S. Department of Agriculture-Agricultural Research Service, Corvallis, OR 97330, U.S.A."}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2223-0440","authenticated-orcid":false,"given":"Tyler B.","family":"Bourret","sequence":"additional","affiliation":[{"name":"Mycology and Nematology Genetic Diversity and Biology Laboratory, U.S. Department of Agriculture-Agricultural Research Service, Beltsville, MD 20705, U.S.A."}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5311-929X","authenticated-orcid":false,"given":"Francine","family":"Govers","sequence":"additional","affiliation":[{"name":"Laboratory of Phytopathology, Wageningen University and Research, 6708 PB Wageningen, the Netherlands"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0690-580X","authenticated-orcid":false,"given":"Bruno","family":"Scanu","sequence":"additional","affiliation":[{"name":"Department of Agricultural Sciences, University of Sassari, 07100 Sassari, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9154-7954","authenticated-orcid":false,"given":"David E. L.","family":"Cooke","sequence":"additional","affiliation":[{"name":"The James Hutton Institute, Invergowrie, Dundee, DD2 5DA, U.K."}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2069-042X","authenticated-orcid":false,"given":"Tanay","family":"Bose","sequence":"additional","affiliation":[{"name":"Department of Biochemistry, Genetics, and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Hatfield, Pretoria 0082, South Africa"}]},{"given":"David L.","family":"Hawksworth","sequence":"additional","affiliation":[{"name":"Royal Botanic Gardens, Kew, Richmond, TW9 3AB, U.K."}]},{"given":"Z. Gloria","family":"Abad","sequence":"additional","affiliation":[{"name":"U.S. Department of Agriculture-PPQ Science & Technology, McDonough, GA 30252, U.S.A."}]},{"given":"M. Victoria","family":"Albarracin","sequence":"additional","affiliation":[{"name":"U.S. Department of Agriculture-APHIS, Plant Protection and Quarantine. 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P\u00e1dua Dias, 11-Agronomia, Piracicaba-SP, 13418-900, Brazil"}]},{"given":"Arild R.","family":"Arifin","sequence":"additional","affiliation":[{"name":"Washington State University, Tree Fruit Research and Extension Center, Wenatchee, WA 98801, U.S.A."}]},{"given":"Matthew J.","family":"Arnet","sequence":"additional","affiliation":[{"name":"The New Zealand Institute for Plant and Food Research Limited, Havelock North 4157, New Zealand"}]},{"given":"Herbert Dustin R.","family":"Aumentado","sequence":"additional","affiliation":[{"name":"Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand"}]},{"given":"J\u00f3zsef","family":"Bakonyi","sequence":"additional","affiliation":[{"name":"Plant Protection Institute, HUN-REN Centre for Agricultural Research, Feh\u00e9rv\u00e1ri \u00fat 132-144, H-1116 Budapest, Hungary"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-6653-8283","authenticated-orcid":false,"given":"Wei 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