Green Waste Compost Impacts Microbial Functions Related to Carbohydrate Use and Active Dispersal in Plant Pathogen-Infested Soil.

The effects of compost on physical and chemical characteristics of soil are well-studied but impacts on soil microbiomes are poorly understood. This research tested effects of green waste compost on bacterial communities in soil infested with the plant pathogen Fusarium oxysporum. Compost was added to pathogen-infested soil and maintained in mesocosms in a greenhouse experiment and replicated growth chamber experiments.

The Impatiens Downy Mildew Epidemic in the United States Is Caused by New, Introgressed Lineages of with Prominent Genotypic Diversity and High Evolutionary Potential.

Impatiens downy mildew (IDM) caused by is currently the primary constraint on the production and use of impatiens () as bedding plants worldwide. Downy mildew has been documented since the 1880s from wild-grown spp. but epidemic outbreaks of the disease affecting the commercially grown, ornamental were only reported for the first time in 2003 in the United Kingdom and in 2004 in the United States.

Comparative genomic analysis reveals contraction of gene families with putative roles in pathogenesis in the fungal boxwood pathogens Calonectria henricotiae and C. pseudonaviculata.

Background: Boxwood blight disease caused by Calonectria henricotiae and C. pseudonaviculata is of ecological and economic significance in cultivated and native ecosystems worldwide. Prior research has focused on understanding the population genetic and genomic diversity of C.

Evidence for the Role of and Xenobiotic Detoxification in Differential Sensitivity to Azole Fungicides in Boxwood Blight Pathogens.

Boxwood blight, a fungal disease of ornamental plants ( spp.), is caused by two sister species, () and (). Compared to , is documented to display reduced sensitivity to fungicides, including the azole class of antifungals, which block synthesis of a key fungal membrane component, ergosterol.

Widespread Occurrence of a Pseudogene in .

and . are two closely related fungal species responsible for boxwood blight disease of ornamental shrubs ( spp.) in the U.

Fusarium graminearum: pathogen or endophyte of North American grasses?

Mycotoxin-producing Fusarium graminearum and related species cause Fusarium head blight on cultivated grasses, such as wheat and barley. However, these Fusarium species may have had a longer evolutionary history with North American grasses than with cultivated crops and may interact with the ancestral hosts in ways which are biochemically distinct. We assayed 25 species of asymptomatic native grasses for the presence of Fusarium species and confirmed infected grasses as hosts using re-inoculation tests.