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Halophytophthora fluviatilis Pathogenicity and Distribution along a Mediterranean-Subalpine Gradient

Caballol, Maria and Straus, Dora and Macia, Hector and Ramis, Xavier and Redondo, Miguel Angel and Oliva, Jonas (2021). Halophytophthora fluviatilis Pathogenicity and Distribution along a Mediterranean-Subalpine Gradient. Journal of Fungi. 7 , 112
[Research article]

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Abstract

Halophytophthora species have been traditionally regarded as brackish water oomycetes; however, recent reports in inland freshwater call for a better understanding of their ecology and possible pathogenicity. We studied the distribution of Halophytophthora fluviatilis in 117 forest streams by metabarcoding river filtrates taken in spring and autumn and by direct isolation from floating leaves. Pathogenicity on six Fagaceae species and Alnus glutinosa was assessed by stem inoculations. The distribution of H. fluviatilis was correlated with high mean annual temperatures (>93.5% of reports in Ta > 12.2 degrees C) and low precipitation records. H. fluviatilis was therefore widely distributed in forest streams in a warm-dry climate, but it was mostly absent in subalpine streams. H. fluviatilis was primarily detected in autumn with few findings in spring (28.4% vs. 2.7% of streams). H. fluviatilis was able to cause small lesions on some tree species such as Quercus pubescens, Q. suber and A. glutinosa. Our findings suggest that H. fluviatilis may be adapted to warm and dry conditions, and that it does not pose a significant threat to the most common Mediterranean broadleaved trees.

Authors/Creators:Caballol, Maria and Straus, Dora and Macia, Hector and Ramis, Xavier and Redondo, Miguel Angel and Oliva, Jonas
Title:Halophytophthora fluviatilis Pathogenicity and Distribution along a Mediterranean-Subalpine Gradient
Series Name/Journal:Journal of Fungi
Year of publishing :2021
Volume:7
Article number:112
Number of Pages:9
Publisher:MDPI
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Microbiology (Microbiology in the medical area to be 30109)
Keywords:oomycetes, Quercus suber, Alnus glutinosa, climate change
URN:NBN:urn:nbn:se:slu:epsilon-p-111236
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-111236
Additional ID:
Type of IDID
DOI10.3390/jof7020112
Web of Science (WoS)000622618800001
ID Code:22855
Faculty:S - Faculty of Forest Sciences
Department:(NL, NJ) > Dept. of Forest Mycology and Plant Pathology
(S) > Dept. of Forest Mycology and Plant Pathology
Deposited By: SLUpub Connector
Deposited On:29 Mar 2021 10:23
Metadata Last Modified:29 Mar 2021 10:31

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