Listing 1 - 8 of 8 |
Sort by
|
Choose an application
Choose an application
Choose an application
evaluation. --- Carbohydrates --- New products --- Novel foods --- probiotics --- Fermentation --- Maltose --- Prébiotique --- Acide gluconique --- Prébiotique --- Acide gluconique
Choose an application
So far, most of the research on the phytopathogen S. scabiei 87-22 focused on its pathogenic lifestyle, both on the composition of its virulome and the environmental signals that trigger its expression enabling host colonization. In this work, our aim is to provide a detailed insight on the catabolic processes on the manner in which S. scabiei feeds on its main host (Solanum tuberosum) and on the way in which it establishes itself in its ecological niche thanks to its antimicrobial properties. The first purpose of this master thesis continues a previous study carried out in which an unexpected inability of S. scabiei to use maltose was observed. Our aim is to focus on the occurrence of spontaneous mutants with improved maltose utilization and, more specifically, to the mutation phenomenon developed by S. scabiei to consume maltose. The second purpose of this master thesis is to assess the antimicrobial capacity of S. scabiei against several fungi and 1 oomycete by identifying/validating the activity of volatile or agar- dilusible compounds. Main results: For the first objective, our results revealed an enormous mutation rate (1/2500 colonies) when S. scabiei is grown on minimal medium with maltose as the sole carbon source. Whole genome analysis highlighted 3 mutation hotspots, including one located directly within the malR gene, which possesses 2 functions: repressor of maltose utilization and activator of the amylolytic system. Our results confirm that this mutation is indeed responsible for the emergence of these spontaneous mutants. Nonetheless, the mutation mechanism still needs to be investigated. Prior work has shown that siderophores from Streptomyces scabiei were involved in the growth inhibition of Penicillium restrictum. In agreement with this, we demonstrated for the second purpose that these siderophores were also involved in the growth inhibition of other fungi and one oomycete by targeting iron homeostasis. Analysis of the S. scabiei volatilome also allowed us to identify volatile compounds (known and unknown) with antimicrobial activity. Our experiments confirmed the toxic elect of these volatile compounds by using the compounds directly on the strains tested.
Choose an application
In horticulture, plant propagation plays an important role, as the number of plants can be rapidly multiplied, retaining the desirable characteristics of the mother plants, and shortening the bearing age of plants. There are two primary forms of plant propagation: sexual and asexual. In nature, the propagation of plants most often involves sexual reproduction, and this form is still used in several species. Over the years, horticulturists have developed asexual propagation methods that use vegetative plant parts. Innovation in plant propagation has supported breeding programs and allowed the production of high quality nursery plants with the same genetic characteristics of the mother plant, free of diseases or pests.
Carya illinoinensis --- orchards --- seedlings production --- emergence rate --- Ericaceae --- Vaccinium virgatum --- micropropagation --- in vitro culture --- cytokinins --- zeatin --- 2iP --- BAP --- kinetin --- WPM --- clone aging --- foundation-stock --- genetic-disorder --- non-infectious --- epigenetic --- pepper --- propagation --- domestic --- wild --- protocorm-like bodies --- light-emitting diode --- trehalose --- maltose --- CCC --- correlation --- growth retardants --- rooting --- cutting --- forcing --- oleander --- shading --- acclimatization --- auxins --- Dracaena draco --- in vitro --- auxin --- rhizobacteria --- Vaccinium spp. --- bacterial wilt --- Solanum melongena --- susceptible --- tolerance --- exopolysaccharides --- cell wall degrading enzymes --- nursery plants --- plant multiplication --- seeds --- cuttings --- budding --- grafting --- biotechnology
Choose an application
In horticulture, plant propagation plays an important role, as the number of plants can be rapidly multiplied, retaining the desirable characteristics of the mother plants, and shortening the bearing age of plants. There are two primary forms of plant propagation: sexual and asexual. In nature, the propagation of plants most often involves sexual reproduction, and this form is still used in several species. Over the years, horticulturists have developed asexual propagation methods that use vegetative plant parts. Innovation in plant propagation has supported breeding programs and allowed the production of high quality nursery plants with the same genetic characteristics of the mother plant, free of diseases or pests.
Research & information: general --- Biology, life sciences --- Carya illinoinensis --- orchards --- seedlings production --- emergence rate --- Ericaceae --- Vaccinium virgatum --- micropropagation --- in vitro culture --- cytokinins --- zeatin --- 2iP --- BAP --- kinetin --- WPM --- clone aging --- foundation-stock --- genetic-disorder --- non-infectious --- epigenetic --- pepper --- propagation --- domestic --- wild --- protocorm-like bodies --- light-emitting diode --- trehalose --- maltose --- CCC --- correlation --- growth retardants --- rooting --- cutting --- forcing --- oleander --- shading --- acclimatization --- auxins --- Dracaena draco --- in vitro --- auxin --- rhizobacteria --- Vaccinium spp. --- bacterial wilt --- Solanum melongena --- susceptible --- tolerance --- exopolysaccharides --- cell wall degrading enzymes --- nursery plants --- plant multiplication --- seeds --- cuttings --- budding --- grafting --- biotechnology --- Carya illinoinensis --- orchards --- seedlings production --- emergence rate --- Ericaceae --- Vaccinium virgatum --- micropropagation --- in vitro culture --- cytokinins --- zeatin --- 2iP --- BAP --- kinetin --- WPM --- clone aging --- foundation-stock --- genetic-disorder --- non-infectious --- epigenetic --- pepper --- propagation --- domestic --- wild --- protocorm-like bodies --- light-emitting diode --- trehalose --- maltose --- CCC --- correlation --- growth retardants --- rooting --- cutting --- forcing --- oleander --- shading --- acclimatization --- auxins --- Dracaena draco --- in vitro --- auxin --- rhizobacteria --- Vaccinium spp. --- bacterial wilt --- Solanum melongena --- susceptible --- tolerance --- exopolysaccharides --- cell wall degrading enzymes --- nursery plants --- plant multiplication --- seeds --- cuttings --- budding --- grafting --- biotechnology
Choose an application
Carbohydrate-active enzymes are responsible for both biosynthesis and the breakdown of carbohydrates and glycoconjugates. They are involved in many metabolic pathways; in the biosynthesis and degradation of various biomolecules, such as bacterial exopolysaccharides, starch, cellulose and lignin; and in the glycosylation of proteins and lipids. Carbohydrate-active enzymes are classified into glycoside hydrolases, glycosyltransferases, polysaccharide lyases, carbohydrate esterases, and enzymes with auxiliary activities (CAZy database, www.cazy.org). Glycosyltransferases synthesize a huge variety of complex carbohydrates with different degrees of polymerization, moieties and branching. On the other hand, complex carbohydrate breakdown is carried out by glycoside hydrolases, polysaccharide lyases and carbohydrate esterases. Their interesting reactions have attracted the attention of researchers across scientific fields, ranging from basic research to biotechnology. Interest in carbohydrate-active enzymes is due not only to their ability to build and degrade biopolymers—which is highly relevant in biotechnology—but also because they are involved in bacterial biofilm formation, and in glycosylation of proteins and lipids, with important health implications. This book gathers new research results and reviews to broaden our understanding of carbohydrate-active enzymes, their mutants and their reaction products at the molecular level.
Research & information: general --- Biology, life sciences --- glycoside hydrolase --- xylanase --- carbohydrate-binding module --- CBM truncation --- halo-tolerant --- xylan hydrolysis --- pectate lyase --- Paenibacillus polymyxa --- pectins --- degradation --- Lactobacillus --- GH13_18 --- sucrose phosphorylase --- glycoside phosphorylase --- Ilumatobacter coccineus --- Thermoanaerobacterium thermosaccharolyticum --- crystallography --- galactosidase --- hydrolysis --- reaction mechanism --- complex structures --- cold-adapted --- GH2 --- Cellulase --- random mutagenesis --- cellulose degradation --- structural analysis --- α-amylase --- starch degradation --- biotechnology --- structure --- pyruvylation --- pyruvyltransferase --- exopolysaccharides --- capsular polysaccharides --- cell wall glycopolymers --- N-glycans --- lipopolysaccharides --- biosynthesis --- sequence space --- pyruvate analytics --- Nanopore sequencing --- ganoderic acid --- Bacillus thuringiensis --- biotransformation --- glycosyltransferase --- whole genome sequencing --- applied biocatalysis --- enzyme cascades --- chemoenzymatic synthesis --- sugar chemistry --- carbohydrate --- Leloir --- nucleotide --- Enzymatic glycosylation --- alkyl glycosides (AG)s --- Deep eutectic solvents (DES) --- Amy A --- alcoholysis --- methanol --- circular dichroism --- protein stability --- alpha-amylase --- biomass --- hemicellulose --- bioethanol --- xylanolytic enzyme --- hemicellulase --- lysozyme --- peptidoglycan cleavage --- avian gut GH22 --- crystal structure --- glycosylation --- UDP-glucose pyrophosphorylase --- UDP-glucose --- nucleotide donors --- Rhodococcus, Actinobacteria, gene redundancy --- Leloir glycosyltransferases --- activated sugar --- UTP --- thermophilic fungus --- β-glucosidases --- Chaetomium thermophilum --- protein structure --- fungal enzymes --- endo-α-(1→6)-d-mannase --- mannoside --- Mycobacterium --- lipomannan --- lipoarabinomannan --- phosphatidylinositol mannosides --- GH68 --- fructosyltransferase --- fructooligosaccharides --- FOS biosynthesis --- prebiotic oligosaccharides --- Arxula adeninivorans --- α-glucosidase --- maltose --- panose --- amylopectin --- glycogen --- inhibition by Tris --- transglycosylation --- glycoside hydrolyase --- Trichoderma harzianum --- complete saccharification --- lignocellulose --- N-acetylhexosamine specificity --- GH20 --- phylogenetic analysis --- NAG-oxazoline --- acceptor diversity --- lacto-N-triose II --- human milk oligosaccharides --- NMR --- molecular phylogeny --- α2,8-sialyltransferases --- polySia motifs --- evolution --- ST8Sia --- functional genomics --- glycoside hydrolase --- xylanase --- carbohydrate-binding module --- CBM truncation --- halo-tolerant --- xylan hydrolysis --- pectate lyase --- Paenibacillus polymyxa --- pectins --- degradation --- Lactobacillus --- GH13_18 --- sucrose phosphorylase --- glycoside phosphorylase --- Ilumatobacter coccineus --- Thermoanaerobacterium thermosaccharolyticum --- crystallography --- galactosidase --- hydrolysis --- reaction mechanism --- complex structures --- cold-adapted --- GH2 --- Cellulase --- random mutagenesis --- cellulose degradation --- structural analysis --- α-amylase --- starch degradation --- biotechnology --- structure --- pyruvylation --- pyruvyltransferase --- exopolysaccharides --- capsular polysaccharides --- cell wall glycopolymers --- N-glycans --- lipopolysaccharides --- biosynthesis --- sequence space --- pyruvate analytics --- Nanopore sequencing --- ganoderic acid --- Bacillus thuringiensis --- biotransformation --- glycosyltransferase --- whole genome sequencing --- applied biocatalysis --- enzyme cascades --- chemoenzymatic synthesis --- sugar chemistry --- carbohydrate --- Leloir --- nucleotide --- Enzymatic glycosylation --- alkyl glycosides (AG)s --- Deep eutectic solvents (DES) --- Amy A --- alcoholysis --- methanol --- circular dichroism --- protein stability --- alpha-amylase --- biomass --- hemicellulose --- bioethanol --- xylanolytic enzyme --- hemicellulase --- lysozyme --- peptidoglycan cleavage --- avian gut GH22 --- crystal structure --- glycosylation --- UDP-glucose pyrophosphorylase --- UDP-glucose --- nucleotide donors --- Rhodococcus, Actinobacteria, gene redundancy --- Leloir glycosyltransferases --- activated sugar --- UTP --- thermophilic fungus --- β-glucosidases --- Chaetomium thermophilum --- protein structure --- fungal enzymes --- endo-α-(1→6)-d-mannase --- mannoside --- Mycobacterium --- lipomannan --- lipoarabinomannan --- phosphatidylinositol mannosides --- GH68 --- fructosyltransferase --- fructooligosaccharides --- FOS biosynthesis --- prebiotic oligosaccharides --- Arxula adeninivorans --- α-glucosidase --- maltose --- panose --- amylopectin --- glycogen --- inhibition by Tris --- transglycosylation --- glycoside hydrolyase --- Trichoderma harzianum --- complete saccharification --- lignocellulose --- N-acetylhexosamine specificity --- GH20 --- phylogenetic analysis --- NAG-oxazoline --- acceptor diversity --- lacto-N-triose II --- human milk oligosaccharides --- NMR --- molecular phylogeny --- α2,8-sialyltransferases --- polySia motifs --- evolution --- ST8Sia --- functional genomics
Choose an application
Carbohydrate-active enzymes are responsible for both biosynthesis and the breakdown of carbohydrates and glycoconjugates. They are involved in many metabolic pathways; in the biosynthesis and degradation of various biomolecules, such as bacterial exopolysaccharides, starch, cellulose and lignin; and in the glycosylation of proteins and lipids. Carbohydrate-active enzymes are classified into glycoside hydrolases, glycosyltransferases, polysaccharide lyases, carbohydrate esterases, and enzymes with auxiliary activities (CAZy database, www.cazy.org). Glycosyltransferases synthesize a huge variety of complex carbohydrates with different degrees of polymerization, moieties and branching. On the other hand, complex carbohydrate breakdown is carried out by glycoside hydrolases, polysaccharide lyases and carbohydrate esterases. Their interesting reactions have attracted the attention of researchers across scientific fields, ranging from basic research to biotechnology. Interest in carbohydrate-active enzymes is due not only to their ability to build and degrade biopolymers—which is highly relevant in biotechnology—but also because they are involved in bacterial biofilm formation, and in glycosylation of proteins and lipids, with important health implications. This book gathers new research results and reviews to broaden our understanding of carbohydrate-active enzymes, their mutants and their reaction products at the molecular level.
glycoside hydrolase --- xylanase --- carbohydrate-binding module --- CBM truncation --- halo-tolerant --- xylan hydrolysis --- pectate lyase --- Paenibacillus polymyxa --- pectins --- degradation --- Lactobacillus --- GH13_18 --- sucrose phosphorylase --- glycoside phosphorylase --- Ilumatobacter coccineus --- Thermoanaerobacterium thermosaccharolyticum --- crystallography --- galactosidase --- hydrolysis --- reaction mechanism --- complex structures --- cold-adapted --- GH2 --- Cellulase --- random mutagenesis --- cellulose degradation --- structural analysis --- α-amylase --- starch degradation --- biotechnology --- structure --- pyruvylation --- pyruvyltransferase --- exopolysaccharides --- capsular polysaccharides --- cell wall glycopolymers --- N-glycans --- lipopolysaccharides --- biosynthesis --- sequence space --- pyruvate analytics --- Nanopore sequencing --- ganoderic acid --- Bacillus thuringiensis --- biotransformation --- glycosyltransferase --- whole genome sequencing --- applied biocatalysis --- enzyme cascades --- chemoenzymatic synthesis --- sugar chemistry --- carbohydrate --- Leloir --- nucleotide --- Enzymatic glycosylation --- alkyl glycosides (AG)s --- Deep eutectic solvents (DES) --- Amy A --- alcoholysis --- methanol --- circular dichroism --- protein stability --- alpha-amylase --- biomass --- hemicellulose --- bioethanol --- xylanolytic enzyme --- hemicellulase --- lysozyme --- peptidoglycan cleavage --- avian gut GH22 --- crystal structure --- glycosylation --- UDP-glucose pyrophosphorylase --- UDP-glucose --- nucleotide donors --- Rhodococcus, Actinobacteria, gene redundancy --- Leloir glycosyltransferases --- activated sugar --- UTP --- thermophilic fungus --- β-glucosidases --- Chaetomium thermophilum --- protein structure --- fungal enzymes --- endo-α-(1→6)-d-mannase --- mannoside --- Mycobacterium --- lipomannan --- lipoarabinomannan --- phosphatidylinositol mannosides --- GH68 --- fructosyltransferase --- fructooligosaccharides --- FOS biosynthesis --- prebiotic oligosaccharides --- Arxula adeninivorans --- α-glucosidase --- maltose --- panose --- amylopectin --- glycogen --- inhibition by Tris --- transglycosylation --- glycoside hydrolyase --- Trichoderma harzianum --- complete saccharification --- lignocellulose --- N-acetylhexosamine specificity --- GH20 --- phylogenetic analysis --- NAG-oxazoline --- acceptor diversity --- lacto-N-triose II --- human milk oligosaccharides --- NMR --- molecular phylogeny --- α2,8-sialyltransferases --- polySia motifs --- evolution --- ST8Sia --- functional genomics --- n/a
Listing 1 - 8 of 8 |
Sort by
|