cases, losses of up to 100% have been reported and growers have had to abandon production fields ( Babadoost, 2004 ). P. capsici is a soil-borne oomycete pathogen that can cause diseases in many plant organs and at various growth stages of the host (e
The oomycete Phytophthora capsici is a soilborne pathogen that causes severe and even complete yield loss in pepper worldwide ( Lamour et al., 2012 ). In Brazil, pepper root rot caused by P. capsici was observed for the first time in 1952 in São
moisture content for the fresh market and volatile oil content for the processing market. Downy mildew of basil, caused by the oomycete Peronospora belbahrii Thines (Peronosporales: Peronosporaceae) ( Thines et al., 2009 ), has become the most devastating
., 1976 ) in 10 500-mL flasks, each one inoculated with 12 cylinders (diameter, 0.5 cm) with mycelia taken from the periphery of a growing oomycete colony of P. cinnamomi on an acidified potato dextrose agar (PDA; 39 g·L –1 and tartaric acid 0.14% w
greenhouse and nursery operations can be a source or dispersal mechanism for pathogens, algae, and biofilm, especially when recirculated and surface-water sources are used. A broad spectrum of plant pathogens, including oomycetes, fungi, bacteria, viruses
resistance conferred by the rootstock ( Navarrete-Mapen et al. 2020 ). Selected rootstocks provide excellent levels of tolerance in vegetables to devasting diseases caused by fungi, oomycetes, and bacteria such as Didymella bryoniae , Fusarium
been reported to increase disease levels in plant disease pathosystems ( Halsall et al., 1983 ; Mittelstrab et al., 2006 ). The exotic oomycete plant pathogen Phytophthora ramorum , the causal agent of sudden oak death, has caused significant damage
Citrus trees are susceptible to a variety of diseases and can be combating more than one at the same time. In the Lower Rio Grande Valley (LRGV) of south Texas, a common oomycete causing major crop losses in citrus is Phytophthora nicotianae
.2%), and F. foetens (48.7%) to a greater extent than the growth of the oomycete isolates ( Fig. 1 ). Because yeasts were the only microbes isolated from DE ( Table 1 ), suppression of fungal pathogens by DE might be the result of the presence of viable
antifungal defense in many plants and is highly toxic to many fungal pathogens representing ascomycetes, basidiomycetes, and deuteromycetes, but not to certain oomycetes such as Phytophthora or to bacteria ( Cooper and Williams, 2004 ). In summary, foliar S