Sökning: "microbial enzymatic activity"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden microbial enzymatic activity.

  1. 1. Occurrence of Phytophthora species in soils, and functional analysis of soil microbiomes on Biolog EcoPlates : a study on commercial soils, and forest and urban soils

    Master-uppsats, SLU/Southern Swedish Forest Research Centre

    Författare :Catharina Schmidt; [2020]
    Nyckelord :Phytophthora; Fagus sylvatica; Quercus robur; soils; Biolog EcoPlates; Metabolic diversity;

    Sammanfattning : Tree pathogenic Phytophthora species have been identified as a threat to health and stability of forests und urban trees. In Sweden most Phytophthora species are non-native and potentially invasive, and thus it is important to control their spread. LÄS MER

  3. 2. Effects of microbial community coalescence in lake water at ice break-off

    Uppsats för yrkesexamina på avancerad nivå,

    Författare :Christoffer Melhus; [2019]
    Nyckelord :Freshwater lakes; ice break-off; microbial community coalescence; dissolved organic matter; microbial enzymatic activity; primary production; photo degradation.;

    Sammanfattning : The period of ice break-off in spring is a key event for many biogeochemical processes in lakes globallly. The biogeochemical processes occurring at ice break-off have the potential of influencing characteristics of lakes throughout spring and summer, including algal blooms and greenhouse gas emission. LÄS MER

  4. 3. Co-occurence and co-metabolism of phototrophic and heterotrophic microbial communities in the Baltic Sea

    Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Cátia Ifigénia Corujo Chaves; [2017]
    Nyckelord :microbiology; extracelullar enzymatic activity; amplicon sequencing; 16S and 18S sequencing;

    Sammanfattning : In the marine water column, microbial autotrophs and heterotrophs coexist forming the beginning of the food chain which sustains the whole biological system. Both groups play a vital role in the microbial loop. LÄS MER

  5. 4. The effect of different carbon sources on reduction of nitrate in effluent from the mining industry : Olika kolkällors inverkan på reduktion av nitrat i processvatten från gruvindustrin

    Uppsats för yrkesexamina på avancerad nivå,

    Författare :Hanna Lindberg; [2014]
    Nyckelord :Denitrification; mine effluent; nitrogen; external carbon; sediment;

    Sammanfattning : Mine water effluent contains high levels of nitrogen due to residues from undetonated ammonium- nitrate based explosives. Excess nitrogen in aquatic ecosystems can cause eutrophication. LÄS MER

  7. 5. Isolation of antibiotic producing microorganisms by screening for antibiotic resistance

    Kandidat-uppsats, SLU/Dept. of Microbiology

    Författare :Emma Nordenfjäll; [2014]
    Nyckelord :antibiotics; secondary metabolites; antibiotic resistance; isolation methods; rare-actinomycetes; unexplored ecological niches; diterpene synthases; non-ribosomal peptide synthases; type I polyketide synthases; type II polyketide synthases;

    Sammanfattning : The worldwide use of antibiotics has rapidly increased since the discovery of the secondary metabolite penicillin made by Alexander Fleming in 1928. Since then, thousands of useful secondary metabolites of microbial origin have been discovered. About 80 % of these substances originate from Actinomycetes and in particularly Streptomyces species. LÄS MER