<i>Phytophthora</i> Species Involved in <i>Alnus glutinosa</i> Decline in Portugal
Recent field surveys conducted in five common alder ecosystems in Portugal have shown the occurrence of severe canopy dieback, bleeding canker and root rot symptoms indicative of <i>Phytophthora</i> infections. Isolations from symptomatic tissues, rhizosphere and water samples yielded a...
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MDPI AG
2023-02-01
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| Series: | Pathogens |
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| Online Access: | https://www.mdpi.com/2076-0817/12/2/276 |
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| author | Carlo Bregant Eduardo Batista Sandra Hilário Benedetto T. Linaldeddu Artur Alves |
| author_facet | Carlo Bregant Eduardo Batista Sandra Hilário Benedetto T. Linaldeddu Artur Alves |
| author_sort | Carlo Bregant |
| collection | DOAJ |
| description | Recent field surveys conducted in five common alder ecosystems in Portugal have shown the occurrence of severe canopy dieback, bleeding canker and root rot symptoms indicative of <i>Phytophthora</i> infections. Isolations from symptomatic tissues, rhizosphere and water samples yielded a total of 13 <i>Phytophthora</i> species belonging to 6 phylogenetic clades, including <i>P. lacustris</i> (13 isolates), <i>P. multivora</i> (10), <i>P. amnicola</i> (9), <i>P. chlamydospora</i> (6), <i>P. polonica</i> (6), <i>P. bilorbang</i> (4), <i>P. plurivora</i> (4), <i>P. cinnamomi</i> (3), <i>P. asparagi</i> (2), <i>P. cactorum</i> (2), <i>P. pseudocryptogea</i> (2), <i>P. gonapodyides</i> (1) and <i>P. rosacearum</i> (1). Results of the pathogenicity test confirmed the complex aetiology of common alder decline and the additional risk posed by <i>Phytophthora multivora</i> to the riparian habitats in Portugal. At the same time, the diversity of <i>Phytophthora</i> assemblages detected among the investigated sites suggests that different species could contribute to causing the same symptoms on this host. Two species, <i>P. amnicola</i> and <i>P. rosacearum,</i> are reported here for the first time in natural ecosystems in Europe. |
| first_indexed | 2024-03-11T08:19:11Z |
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| issn | 2076-0817 |
| language | English |
| last_indexed | 2024-03-11T08:19:11Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Pathogens |
| spelling | doaj.art-b71890c4dc574a579acad9b6713cf69e2023-11-16T22:34:26ZengMDPI AGPathogens2076-08172023-02-0112227610.3390/pathogens12020276<i>Phytophthora</i> Species Involved in <i>Alnus glutinosa</i> Decline in PortugalCarlo Bregant0Eduardo Batista1Sandra Hilário2Benedetto T. Linaldeddu3Artur Alves4Dipartimento Territorio e Sistemi Agro-Forestali, Università degli Studi di Padova, Viale dell’Università, 16, 35020 Legnaro, ItalyCESAM, Departamento de Biologia, Universidade de Aveiro, 3810-193 Aveiro, PortugalCESAM, Departamento de Biologia, Universidade de Aveiro, 3810-193 Aveiro, PortugalDipartimento Territorio e Sistemi Agro-Forestali, Università degli Studi di Padova, Viale dell’Università, 16, 35020 Legnaro, ItalyCESAM, Departamento de Biologia, Universidade de Aveiro, 3810-193 Aveiro, PortugalRecent field surveys conducted in five common alder ecosystems in Portugal have shown the occurrence of severe canopy dieback, bleeding canker and root rot symptoms indicative of <i>Phytophthora</i> infections. Isolations from symptomatic tissues, rhizosphere and water samples yielded a total of 13 <i>Phytophthora</i> species belonging to 6 phylogenetic clades, including <i>P. lacustris</i> (13 isolates), <i>P. multivora</i> (10), <i>P. amnicola</i> (9), <i>P. chlamydospora</i> (6), <i>P. polonica</i> (6), <i>P. bilorbang</i> (4), <i>P. plurivora</i> (4), <i>P. cinnamomi</i> (3), <i>P. asparagi</i> (2), <i>P. cactorum</i> (2), <i>P. pseudocryptogea</i> (2), <i>P. gonapodyides</i> (1) and <i>P. rosacearum</i> (1). Results of the pathogenicity test confirmed the complex aetiology of common alder decline and the additional risk posed by <i>Phytophthora multivora</i> to the riparian habitats in Portugal. At the same time, the diversity of <i>Phytophthora</i> assemblages detected among the investigated sites suggests that different species could contribute to causing the same symptoms on this host. Two species, <i>P. amnicola</i> and <i>P. rosacearum,</i> are reported here for the first time in natural ecosystems in Europe.https://www.mdpi.com/2076-0817/12/2/276emerging diseasesinvasive pathogenspathogenicity |
| spellingShingle | Carlo Bregant Eduardo Batista Sandra Hilário Benedetto T. Linaldeddu Artur Alves <i>Phytophthora</i> Species Involved in <i>Alnus glutinosa</i> Decline in Portugal Pathogens emerging diseases invasive pathogens pathogenicity |
| title | <i>Phytophthora</i> Species Involved in <i>Alnus glutinosa</i> Decline in Portugal |
| title_full | <i>Phytophthora</i> Species Involved in <i>Alnus glutinosa</i> Decline in Portugal |
| title_fullStr | <i>Phytophthora</i> Species Involved in <i>Alnus glutinosa</i> Decline in Portugal |
| title_full_unstemmed | <i>Phytophthora</i> Species Involved in <i>Alnus glutinosa</i> Decline in Portugal |
| title_short | <i>Phytophthora</i> Species Involved in <i>Alnus glutinosa</i> Decline in Portugal |
| title_sort | i phytophthora i species involved in i alnus glutinosa i decline in portugal |
| topic | emerging diseases invasive pathogens pathogenicity |
| url | https://www.mdpi.com/2076-0817/12/2/276 |
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