The brown planthopper (BPH), Nilaparvata lugens Stål, is an insect pest that severely damages rice (Oryza sativa L.) in Asia, causing huge yield loss. Use of resistant variety a cost-effective and eco-friendly strategy for maintaining BPH populations below the economic injury level. However, current have been changed to virulence against varieties. In this study, estimate effective combinations...

Breeding wheat with durable resistance to the fungal pathogen Puccinia graminis f. sp. tritici (Pgt), a major threat cereal production, is challenging due rapid evolution of virulence. Increased durability and broad-spectrum can be achieved by introducing more than one gene, but combining numerous unlinked genes breeding laborious. Here we generate polygenic Pgt transgene cassette five into bre...

ABSTRACT Collections of Puccinia triticina, the wheat leaf rust fungus, were obtained from Great Britain, Slovakia, Israel, Germany, Australia, Italy, Spain, Hungary, South Africa, Uruguay, New Zealand, Brazil, Pakistan, Nepal, and eastern and western Canada. All single-uredinial isolates derived from the collections were tested for virulence polymorphism on 22 Thatcher wheat lines that are nea...

  The sporozoites of Theileria annulata invade bovine MHC II cells, where they differentiate into schizonts. The later can immortalize and induce fundamental changes in their host cells. Live attenuated vaccine is an important way of controlling T. annulata infection of cattle. Production is by prolonged cultivation of macroschizont-infected cells. The mechanisms underlying this transformation ...

BACKGROUND An important mechanism of Mycobacterium tuberculosis pathogenesis is the ability to control cell death pathways in infected macrophages: apoptotic cell death is bactericidal, whereas necrotic cell death may facilitate bacterial dissemination and transmission. METHODS We examine M.tuberculosis control of spontaneous and chemically induced macrophage cell death using automated confoc...

Isogenic strains of Agrobacterium tumefaciens carrying pTiC58, pAtC58, or both were constructed and assayed semiquantitatively and quantitatively for virulence and vir gene expression to study the effect of the large 542-kb accessory plasmid, pAtC58, on virulence. Earlier studies indicate that the att (attachment) genes of A. tumefaciens are crucial in the ability of this soil phytopathogen to ...

Powdery mildew is a common, economically important disease in the wheat growing area of Serbia. A large-scale virulence survey its causal agent Blumeria graminis f. sp. tritici population was performed period 1995–2013. total 1013 isolates were recovered from collected chasmothecial samples. Among them, 862 unique pathotypes identified using differential set 20 lines with known powdery (Pm) res...