First report of Fusarium poae on tomato in Argentina

Abstract

Small pieces of diseased tissue were surface sterilized with 0·5% NaOCl, plated on 2% potato dextrose agar (PDA) at pH 6, and incubated at 22 to 24 ° C. Dense, whitish mycelium developed within 72-96 h. Microconidia were abundant, globose to piriform, 0-1 septate, 4 -10 × 4·5-7 μ m, and formed on unbranched and branched monophialides. Cultures produced a fruity aroma similar to amyl acetate. Spores from 14-day-old colonies that developed on PDA were removed with 4 mL of sterile water. The pathogenicity of the fungus was tested by spraying five healthy inflorescences of tomato with a 5-mL suspension (2 × 10 5 conidia mL -1 of sterile distilled water). Another five healthy inflorescences were sprayed with sterile distilled water. The plants were placed in a growth chamber with a 12-h photoperiod at 22 ± 2 ° C and covered with polyethylene bags that were removed after 3 days when plants were moved to a glasshouse. While control flowers were healthy, all inoculated flowers showed symptoms similar to those observed previously.

Production of Siderophores Increases Resistance to Fusaric Acid in Pseudomonas protegens Pf-5

“…Fusaric acid (FA, 5-butylpyridine-2-carboxylic acid) [ 1 ] is a fungal metabolite produced by several members of the genus Fusarium that contribute to wilt and rot diseases of plants [ 1 , 2 , 3 ], including crop species belonging to the families Gramineae , Leguminosae , Alliaceae and Solanaceae , which result in significant economic losses worldwide [ 4 , 5 , 6 , 7 , 8 , 9 ]. Currently, application of synthetic fungicides is the strategy most frequently used to control diseases caused by Fusarium species.…”

Fusarium Head Blight on Wheat: Biology, Modern Detection and Diagnosis and Integrated Disease Management

“…The kernels resulting from the infected spikes are known as tombstones because they are light in weight, shriveled, discolored with a pinkish or chalky appearance, and poor quality ( Figure 2 ) [ 6 , 9 , 35 , 42 , 43 ]. However, some less virulent pathogens, such as F. poae, may cause infection and result in high levels of mycotoxin contamination in the infected kernels without detectable symptoms on the spikelets or the spike [ 44 , 45 ].…”

Basic β-1,3-Glucanase from Drosera binata Exhibits Antifungal Potential in Transgenic Tobacco Plants

“…Their cell wall contains 20–30% of proteins, 10–20% of chitin, and 30–55% of β-1,3-glucan, depending on the fungal species [ 32 ]. T. viride was used as a non-pathogenic test fungus often deployed for characterisation of plant antimicrobial proteins [ 33 ], R. solani as a tobacco pathogen [ 34 ], A. solani as a Solanaceae crops pathogen [ 35 ] and F. poae as a rare Solanaceae crops pathogen [ 36 ].…”