Verticillium lecanii has been found growing in pustu'les of the uredial stage of a number of rust fungi (GAMS 1971, SCHROEDER and HAssEBRAuK 1957, CASPER and MENDGEN 1979, SPENCER 1'980), and in some insects (HALL 1980). SCHROEDER and HASSEBRi\UK (1957) observed that this fungus is able to penetrate the urediospores of Puccinia striiformis. It remains to be shown, however, whether Verticillium ...

Germ tubes of Uromyces fabae differentiated into appressoria which were deliminated either by one or two septa. These appressoria developed rapidlyon artificial membranes as well as on leaf surfaces. Fluorescein-conjugated wheat germ aggJutinin (WGA) bound strongly tO the germ tube walls of U. fabae and its binding ability did not differ significantly in 3, 5 and 7 hold germ tubes. The binding ...

Foxtail millet (Setaria italica) is an important food and fodder grain crop that is grown for human consumption. Production of this species is affected by several plant diseases, such as rust. The cultivar Shilixiang has been identified as resistant to the foxtail millet rust pathogen, Uromyces setariae-italicae. In order to identify signaling pathways and genes related to the plant's defense m...

The effects of light and host volatiles on teliospore germination in Uromyces appendiculatus var. appendiculatus were studied. I. Light intensities ranging 15-26000 lux supported teliospore germination and basidiospore formation. The optimum light intensity was 17000 lux under the described conditions. Light-dark alternation was necessary for teliosp.ore germination: no germination occurred und...

The Dothideomycete fungus Mycosphaerella graminicola is the causal agent of Septoria tritici blotch, a devastating disease of wheat leaves that causes dramatic decreases in yield. Infection involves an initial extended period of symptomless intercellular colonisation prior to the development of visible necrotic disease lesions. Previous functional genomics and gene expression profiling studies ...

A de novo search for repetitive elements in the genome sequence of the wheat pathogen Mycosphaerella graminicola identified a family of repeats containing a DNA cytosine methyltransferase sequence (MgDNMT). All 23 MgDNMT sequences identified carried signatures of repeat induced point mutation (RIP). All copies were subtelomeric in location except for one on chromosome 6. Synteny with M. fijiens...

The development of new anti-ureolytic compounds is great interest due to the newly discovered role urease inhibitors in crop protection. Purine degradation and generation ammonium by are required for full virulence biotrophic hemibiotrophic fungal plant pathogens. Accordingly, chemicals displaying inhibitor activity may be used as a novel class fungicides. Several belonging different chemical c...