Kwak, Y.-S., Bakker, P. A. H. M., Glandorf, D. C. M., Rice, J. T., Paulitz, T. C., and Weller, D. M. 2009. Diversity, virulence, and 2,4-diacetylphloroglucinol sensitivity of Gaeumannomyces graminis var. tritici isolates from Washington State. Phytopathology 99:472-479. We determined whether isolates of the take-all pathogen Gaeumannomyces graminis var. tritici become less sensitive to 2,4-diac...

The identification and characterization of pathogenicity factors are essential to an understanding of the molecular events that regulate the interaction of plant-pathogenic microbes with their hosts. We have isolated the gene that encodes a host-selective toxic protein produced by the fungus Pyrenophora tritici-repentis and confirmed that this gene functions in the plant as the primary determin...

Septoria tritici blotch, caused by the fungal pathogen Zymoseptoria tritici, is a highly significant disease on wheat crops worldwide. The objective of present study was to find out new bacterial strains with bio-antimicrobial activity against Z. tritici. Two phyllospheric bacteria (S1 and S6) were isolated from ears identified as Bacillus velezensis according 16S rRNA Sanger sequencing. Antago...

The fungal wheat pathogen Zymoseptoria tritici possesses a large complement of accessory chromosomes showing presence/absence polymorphism among isolates. These chromosomes encode hundreds of genes; however, their functional role and why the chromosomes have been maintained over long evolutionary times are so far not known. In this study, we addressed the functional relevance of eight accessory...

Tan spot, caused by Pyrenophora tritici-repentis, is an economically important foliar disease of wheat in Kazakhstan. Population structure the pathogen changes every year due to climate change. This study aimed characterize race P. tritici-repentis isolates recovered from south and north Kazakhstan, identify tan spot resistance host genotypes based on phenotypes molecular screening. Virulence p...

Tile wheat gall nematode, Anguina tritici (Steinbuch 1799) Chitwood, 1935 does not travel far in the soil by its own efforts after i t emerges f rom the gall. When larvae are bur ied 15-20 cm under the surface, there is little infection of wheat, according to Marcinowski (3). Below 30 cm there is no infection and horizontal travel is f rom 5 to 20 cm. Marcinowski 's experiments were apparent ly...

Seasonal flight activity of thrips was examined in commercial tomato fields, Lycopersicon esculentum L., on Virginia’s (USA) Eastern Shore in 2000 and 2001. In each of three regions along the Shore, populations of adult thrips infesting tomato flowers and dispersing within tomato fields were monitored weekly. Frankliniella fusca (Hinds) was the only thrips species captured that is currently con...

BACKGROUND Take-all of wheat, caused by the soil-borne fungus Gaeumannomyces graminis var. tritici, is one of the most important and widespread root diseases. Given that take-all is still hard to control, it is necessary to develop new effective agrochemicals. Pyrazole derivatives have been often reported for their favorable bioactivities. In order to discover compounds with high fungicidal act...

haplothrips zabolius sp. n. is described from two plant species, cynodon dactylon (poaceae) and plantago lanceolata (plantaginaceae) from the southeast of iran. the new species is apparently close to some grass-living haplothrips species: h. aculeatus (fabricius), h. eragrostidis priesner and h. hukkineni priesner. most specimens of the new species have only one sense cone on the antennal segme...