Fusarium wilt diseases caused by the fungus Fusarium oxysporum lead to significant yield losses of crops. Biocontrol agents such asTrichoderma viride , Trichoderma harzianum and Pseudomonas fluorescens are applied to control Fusarium wilt of Arachis hypogaea. Experiments were conducted on the effect of culture filtrates of T.viride (1%), T.harzianum (1.5%), and P. fluorescens (2%) on biochemica...

to study of biological control of charcoal rot of melon caused by macrophomina phaseolina, 187 isolates of fluorescens pseudomonas isolated of rhizosphere and soil of melon plants. then 12 isolates belong to i, iii and v biovars of p. fluorescens and b biovar of p. putida were selected for greenhouse experiments based on inhibition amount. pseudomonas isolates inhibited mycelial growth signific...

Glucose oxidation by Pseudomonas Jluorescens (1) and Pseudomonas aeruginosa (2) has been shown to proceed via gluconate to 2-ketogluconate without the involvement of phosphorylated intermediates. 2-Ketogluconate is oxidized further in growing cultures (3) and resting cell suspensions (4), but attempts to obtain dried cell preparations or cell-free extracts which oxidize 2-ketogluconate have bee...

Rapid increase of resistance to antibacterial agents in recent years has become a major global public health problem.1,2) The development of antibiotics with novel mechanisms of action is one of the most important measures leading to the control of bacterial infectious diseases in the new millennium. The genomic antibacterial approach plays a critical role in the discovery of new targets by sea...

A variety of stress situations may affect the activity and survival of plant-beneficial pseudomonads added to soil to control root diseases. This study focused on the roles of the sigma factor AlgU (synonyms, AlgT, RpoE, and ) and the anti-sigma factor MucA in stress adaptation of the biocontrol agent Pseudomonas fluorescens CHA0. The algU-mucA-mucB gene cluster of strain CHA0 was similar to th...

Background:Ralstonia spp. is a major pathogenic microbe for tomato, which invades the roots of diverse plant hosts and colonizes xylem vessels causing wilt, especially in tropical, subtropical and warm-temperate regions. Ralstonia spp. produces several virulence factors helping it to invade the plant's natural defense mechanism. Native isolates of Trichoderma spp., Pseudomonas fluorescens and B...

spp. is a major pathogenic microbe for tomato, which Background: Ralstonia invades the roots of diverse plant hosts and colonizes xylem vessels causing wilt, especially in tropical, subtropical and warm-temperate regions. Ralstonia spp. produces several virulence factors helping it to invade the plant’s natural defense mechanism. Native isolates of Trichoderma spp., Pseudomonas and can be used ...

MacGee and Doudoroff (2) have gained evidence in support of the postulated scheme by recovering the product of Reaction 1 as a crystalline trisodium salt and establishing its structure as Na3-2-keto-3-deoxy-6-phosphogluconate+2Hz0. Extracts of Pseudomonas Jluorescens catalyze the cleavage of 6-PG to pyruvate and triose phosphate at a rate 10 times faster than the rate of 6-PG dehydrogenase acti...

Enrichment of staple food with zinc (Zn) along solubilizing bacteria is a sustainable and practical approach to overcome Zn malnutrition in human beings by improving plant nutrition, nutrient use efficiency, productivity. Common bean (Phaseolus vulgaris L.) one global population has prospective role agronomic biofortification. In this context, we evaluated the effect diazotrophic bacterial co-i...

A variety of stress situations may affect the activity and survival of plant-beneficial pseudomonads added to soil to control root diseases. This study focused on the roles of the sigma factor AlgU (synonyms, AlgT, RpoE, and sigma(22)) and the anti-sigma factor MucA in stress adaptation of the biocontrol agent Pseudomonas fluorescens CHA0. The algU-mucA-mucB gene cluster of strain CHA0 was simi...