Detection of Ramularia collo-cygni from barley in Australia using triplex quantitative and droplet digital PCR.

Background: Ramularia leaf spot (RLS), caused by Ramularia collo-cygni, is an emerging threat to barley (Hordeum vulgare L.) production. RLS has been reported in Australia, however only minimal information is available regarding its detection and distribution.

Species Causing Anthracnose of Citrus in Australia.

spp. are important pathogens of citrus that cause dieback of branches and postharvest disease. Globally, several species of have been identified as causing anthracnose of citrus.

Paraphoma Crown Rot of Pyrethrum (Tanacetum cinerariifolium).

Pyrethrum (Tanacetum cinerariifolium) is commercially cultivated for the extraction of natural pyrethrin insecticides from the oil glands inside seed. Yield decline has caused significant yield losses in Tasmania during the last decade. A new pathogen of pyrethrum causing crown rot and reduced growth of the plants in yield decline affected fields of northern Tasmania was isolated from necrotic crown tissue and described as Paraphoma vinacea.