Aphanomyces macrosporus sp. nov. Causing Root Rot in Barley and Some Other Plants.

ABSTRACT: In recent years, a new root rot disease in barley, which is caused by an Aphanomyces species, was found in field surveys in Southern Sweden and Denmark. Its symptoms occurred at the early tillering stage, around the BBCH 21 growth stage, and included the yellowing of leaves, brown coleoptiles, and the discolouration of roots. Prolonged soil wetness after rainfall favoured disease development, which sometimes advanced the yellowing patches to entire fields, resulting in lower yields. Oospores were found in the fine roots of diseased plants, and Aphanomyces isolates were obtained from these roots, as well as from the roots of barley plants grown in the greenhouse in soil samples from infected fields. Based on morphological analysis, we found that the new isolates were similar t

SUBMITTER: Wikstrom M 

PROVIDER: S-EPMC10744466 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature