Phytophthora Species Involved in Alnus glutinosa Decline in Portugal

• Type: Article in International Scientific Journal
• Date: 2023

Authors

Bregant, C (Author) Other; Batista, E (Author) Other; Hilario, S (Author) FCUP; Linaldeddu, BT (Author) Other; Alves, A (Author) Other

Journal

Title: Pathogens

Vol. 12

Final page: 276

Publisher: MDPI

Indexing

ISI Web of Knowledge - 0 Citations

Scopus

Other information

Authenticus ID: P-00X-ZZZ

DOI: 10.3390/pathogens12020276

Abstract (EN): 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 Phytophthora infections. Isolations from symptomatic tissues, rhizosphere and water samples yielded a total of 13 Phytophthora species belonging to 6 phylogenetic clades, including P. lacustris (13 isolates), P. multivora (10), P. amnicola (9), P. chlamydospora (6), P. polonica (6), P. bilorbang (4), P. plurivora (4), P. cinnamomi (3), P. asparagi (2), P. cactorum (2), P. pseudocryptogea (2), P. gonapodyides (1) and P. rosacearum (1). Results of the pathogenicity test confirmed the complex aetiology of common alder decline and the additional risk posed by Phytophthora multivora to the riparian habitats in Portugal. At the same time, the diversity of Phytophthora assemblages detected among the investigated sites suggests that different species could contribute to causing the same symptoms on this host. Two species, P. amnicola and P. rosacearum, are reported here for the first time in natural ecosystems in Europe.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11