The Alternative Host with the Most: Understanding the Ecology of pv. on Noncarrot Crops in Central Oregon.

Bacterial blight of carrot, caused by pv. (), is an economically important disease in carrot ( subsp. ) seed production.

Evaluation of Sulfur-Based Biostimulants for the Germination of Sclerotia and Their Interaction with Soil.

White rot is an economically significant disease of . The pathogen produces long-lived sclerotia that germinate in response to sulfur-containing compounds released from roots. Diallyl disulfide (DADS) was the primary organic sulfur compound detected in the rhizosphere soil of two garlic cultivars, "California Early and Late", growing in greenhouse conditions.

Molecular and Alkaloid Characterization of Sensu Lato From Grass Seed Production Areas of the U.S. Pacific Northwest.

Ergot, caused by sensu lato, is an economically important seed replacement disease of Kentucky bluegrass () and perennial ryegrass () seed crops. sensu stricto is considered the primary species responsible, but genetic diversity and cryptic species within sensu lato have previously been reported. Fifty-six sensu lato isolates collected from ( = 21) and ( = 35) in Oregon and Washington between 2010 and 2014 were characterized via random amplified polymorphic DNA (RAPD), partial internal transcribed spacer (ITS), β-tubulin and elongation factor-1α (EF-1α) sequences, conidial size, and ergot alkaloid chemotype.

Distribution of pv. Populations in Naturally Infested Carrot Seed Lots.

Bacterial blight of carrot ( subsp. ), caused by the plant-pathogenic bacterium pv. , is a common seedborne disease of carrot wherever the crop is grown.

Evidence of a trans-kingdom plant disease complex between a fungus and plant-parasitic nematodes.

Disease prediction tools improve management efforts for many plant diseases. Prediction and downstream prevention demand information about disease etiology, which can be complicated for some diseases, like those caused by soilborne microorganisms. Fortunately, the availability of machine learning methods has enabled researchers to elucidate complex relationships between hosts and pathogens without invoking difficult-to-satisfy assumptions.

Detection and Quantification of Airborne Claviceps purpurea sensu lato Ascospores from Hirst-Type Spore Traps using Real-Time Quantitative PCR.

The U.S. Pacific Northwest states of Oregon and Washington are major producers of cool-season grass seed.

Resistance of Aegilops Species from Israel to Widely Virulent African and Israeli Races of the Wheat Stem Rust Pathogen.

Widely virulent races of the stem rust pathogen (Puccinia graminis f. sp. tritici) such as those isolated from Africa (e.

Functional characterization of the bacterial iac genes for degradation of the plant hormone indole-3-acetic acid.

Pseudomonas putida 1290 is a model organism for the study of bacterial degradation of the plant hormone indole-3-acetic acid (IAA). This property is encoded by the iac gene cluster. Insertional inactivation and/or deletion of individual iac genes and heterologous expression of the gene cluster in Escherichia coli were combined with mass spectrometry to demonstrate that iac-based degradation of IAA is likely to involve 2-hydroxy-IAA, 3-hydroxy-2-oxo-IAA, and catechol as intermediates.