We have previously reported that disruption of a maize root-expressed 9-lipoxygenase (9-LOX) gene, ZmLOX3, results in dramatic increase in resistance to diverse leaf and stalk pathogens. Despite evident economic significance of these findings, the mechanism behind this increased resistance remained elusive. In this study, we found that increased resistance of the lox3-4 mutants is due to consti...

The unstable isomeric compounds 5-hydroxy-7-prop-2-en-(E)-ylidene-7,7adihydro-2H-cyclopenta[b]pyran-6-one (1) and 5-hydroxy-7-prop-2-en-(Z)-ylidene-7,7adihydro-2H-cyclopenta[b]pyran-6-one (2), previously described as antimicrobial metabolites from the sponge Ulosa sp., were isolated and identified as major components of the ascidian Diplosoma virens. In this paper, full spectral data for 2 and ...

Pulp and paper mill effluents pollute water, air and soil, causing a major threat to the environment. Several methods have been attempted by various researchers throughout the world for the removal of colour from pulp and paper mill effluents. The biological colour removal process uses several classes of microorganisms--bacteria, algae and fungi--to degrade the polymeric lignin derived chromoph...

abstract the root and foot rot of wheat is one of the important disease of wheat over the world. the root and foot rot of wheat observed more frequently in the resent years at khorasan province (northeast of iran). for investigation the causal agents, several samples were collected from wheat fields of north khorasan in 2007 and 2008. culture of diseased parts of plants on pda resulted. fusariu...

in this survey, the effect of two commercial products trichodermin (trichoderma harzianum bi ) and subtilin (bacillus subtilis s) along with one strain of t. virens vm1 isolated from sugar beet farms of mashhad were used for controlling heterodera schachtii in field conditions. t. virens vm1 was formulated as two other commercial products. in this order, this strain was sub cultured on p.d.a. t...

Rice false smut disease is caused by Ustilaginoidea virens, an ascomycetous fungi. Thirty isolates of U. virens showed well defined colonies on potato sucrose medium (PSA). The maximum colony diameter was found to be 85.68 mm with a growth rate 2.85 in the UV23 isolate and minimum 10.14 0.33 mm, which observed UV15 isolate. However, thirty exhibit various cultural morphological characteristics ...