11 research outputs found
Efficacy of Oryza sativa husk and Quercus phillyraeoides extracts for the in vitro and in vivo control of fungal rot disease of white yam (Dioscorea rotundata Poir)
Get PDFMetabolic engineering of Rhizopus oryzae for the production of platform chemicals
Get PDFRhizopus oryzae is a filamentous fungus belonging to the Zygomycetes. It is among others known for its ability to produce the sustainable platform chemicals l-(+)-lactic acid, fumaric acid, and ethanol. During glycolysis, all fermentable carbon sources are metabolized to pyruvate and subsequently distributed over the pathways leading to the formation of these products. These platform chemicals are produced in high yields on a wide range of carbon sources. The yields are in excess of 85Â % of the theoretical yield for l-(+)-lactic acid and ethanol and over 65Â % for fumaric acid. The study and optimization of the metabolic pathways involved in the production of these compounds requires well-developed metabolic engineering tools and knowledge of the genetic makeup of this organism. This review focuses on the current metabolic engineering techniques available for R. oryzae and their application on the metabolic pathways of the main fermentation products
The effect of plant extracts as seed treatments to control bacterial leaf spot of tomato in Tanzania
Full text linkEffect of Cultural Conditions on the Commercial Production of Polygalacturonase by Rhizoctonia bataticola
No full textPolygalacturonase (PG) activity was detected in culture filtrate and Rhizoctonia-infected tissues of potato tubers (Solanum tuberosum). Culture produced PG formed more reducing groups that PG from diseased tissue. PG production and pH of the culture medium increased with incubation period and attained optimal values between the 4th and 6th day. The ability of Rhizoctonia bataticola to produce PG varied with the carbon and nitrogen sources in the medium; relatively large amounts of PG were produced in media supplemented with citrus pectin, sodium polypectate and potato slices as carbon sources and asparagine and D-L-_-phenylalanine as nitrogen sources. The industrial use of the enzyme to separate cellulose fibres and the maceration of vegetables are discussed. Keywords:Rhizoctonia bataticola, Solanum tuberosum, polygalacturonase, nitrogen and carbon sources. Discovery and Innovation Vol. 19 (4) 2007: pp. 264-26
Effect of plant extracts and an essential oil on the control of brown spot disease, tillering, number of panicles and yield increase in rice
No full textAntifungal effect of aqueous and ethanolic extracts of neem leaves, stem bark and seeds on fungal rot diseases of yam and cocoyam
No full textUse of plant extracts and biocontrol agents for the management of brown spot disease in rice
No full textTransient responses of Wickerhamia sp. yeast continuous cultures to qualitative changes in carbon source supply: induction and catabolite repression of α-amylase synthesis
No full textExtract of Mimosa tenuiflora and Quercus robur as potential eco-friendly management tool against Sclerotinia sclerotiorum in Lactuca sativa enhancing the natural plant defences
No full textAntifungal potentials of some botanicals on Sclerotium rolfsii schum., the causal pathogen of damping-off of Gmelina arborea Roxb. in Ibadan, Southwestern Nigeria
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