due to the high antagonistic activity of bacterium, bacillus subtilis (ehrenberg) cohn, three isolates (b.s.ham, 204 and 202) were selected and their efficacy were studied in control of sugar beetdamping–off caused by rhizoctonia solani , in  in vitro and in vivo conditions.  in dual culture on pda, all isolates of b.subtilis inhibited mycelial growth of r.solani.  significantly, volatile metab...

application of trichoderma species is a harmless method in controlling soil borne plant diseases thus reducing hazardous pesticide use and environmental pollution. some trichoderma isolates performing proper inhibitory effect against fusarium oxysporum f. sp. tuberosi under laboratory and green house conditions were screened against wilt disease of potato caused by this pathogen under field con...

HORTSCIENCE VOL. 41(1) FEBRUARY 2006 annuum L.), pineapple [Ananas comosus (L.) Merrill], potato (Solanum tuberosum L.), spinach, strawberry (Fragaria ×ananassa Duch.), and tomato (Lycopersicum esculentum Mill.). Ascorbic acid is critical in maintaining a healthy immune system, reducing the severity of colds by preventing secondary viral or bacterial infections, protecting against damage by red...

wheat root and crown rot known as take-all disease caused by gaeumannomyces graminis var. tritici is one of the most important diseases of wheat worldwide. in iran,the disease has been reported from provinces such as markazi and golestan. in recent years, symptoms of the disease such as stunted and yellow plant, rotted roots and whitened/empty heads have been observed in wheat fields in various...

In order to directly assess the distribution of cytolytic T lymphocytes (CTL) and their precursors (CTL-P) in the two major subsets of human T cells, we have used limiting dilution microculture systems to determine their frequencies. The two subsets were defined according to their reactivity (or lack thereof) with B9.4 monoclonal antibody (the specificity of which is similar, if not identical, ...

The effects of the electronic and geometric factors on the global minimum structures of MB9(-) (M = V, Nb, Ta) are investigated using photoelectron spectroscopy and ab initio calculations. Photoelectron spectra are obtained for MB9(-) at two photon energies, and similar spectral features are observed for all three species. The structures for all clusters are established by global minima searche...