Action Spectrum of the Photoinduced Sexual Stage in the Fungus Nectria haematococca Berk. and Br. var cucurbitae (Snyder and Hansen) Dingley.

Genetic Analysis of Dodine

HERE has been a small amount of published information on the genetics of the heterothallic ascomycete causing root and fruit rot of cucurbits. In these publications the fungus has been referred to as Hypomyces solani f. cucurbitae. However, according to DINGLEY (1961), this organism belong to the species Nectria haenzatococca and should be called N . haematococca var. cucurbitae. Genetic knowle...

Haematocin, a new antifungal diketopiperazine produced by Nectria haematococca Berk. et Br. (880701a-1) causing nectria blight disease on ornamental plants.

A new antifungal diketopiperazine named haematocin was isolated from the culture broth of Nectria haematococca Berk. et Br. (880701a-1) causing blight disease on ornamental plants, Phalaenopsis spp. and Doritanopsis spp. Its structure was established by spectroscopic methods. Haematocin inhibited the germ-tube elongation and spore-germination of Pyricularia oryzae at the ED50 values of 30 micro...

Genetic and Biochemical Characterization of Nectria haematococca Strains with Adhesive and Adhesion-Reduced Macroconidia.

A previous study reported the isolation of two mutants (LE1 and LE2) of the plant pathogenic fungus Nectria haematococca (anamorph, Fusarium solani f. sp. cucurbitae) with macroconidia with reduced ability to adhere (Att) to zucchini fruits and polystyrene. The adhesion-reduced-phenotype in LE1 and LE2 macroconidia is temperature sensitive and dependent on the concentration of nutrients. Classi...

Genetic Analysis of the Role of Phytoalexin Detoxification in Virulence of the Fungus Nectria haematococca on Chickpea (Cicer arietinum).

Chickpea (Cicer arietium L.) produces the antimicrobial compounds (phytoalexins) medicarpin and maackiain in response to infection by microorganisms. Nectria haematococca mating population (MP) VI, a fungus pathogenic on chickpea, can metabolize maackiain and medicarpin to less toxic products. These reactions are thought to be detoxification mechanisms in N. haematococca MP VI and required for ...

The Journal of Antibiotics 6-0-demethyl-5-deoxyfusarubin and Its Anhydro Derivative Produced by a Mutant of the Fungus Nectria Haematococca Blocked in Fusarubin Biosynthesis