Halophytophthora fluviatilis Pathogenicity and Distribution along a Mediterranean-Subalpine Gradient.

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 °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

SUBMITTER: Caballol M 

PROVIDER: S-EPMC7913473 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature