title: Relationship between poly-beta-hydroxybutyrate production and delta-endotoxin for Bacillus thuringiensis var. kurstaki.
abstract: A linear relationship between total solid concentration (TSC), delta-endotoxin production [Cry = 0.2795(TSC)-0.2472, R2 = 0.8644] and poly-beta-hydroxybutyrate (PHB) accumulation [PHB = 0.1327(TSC) + 0.3974, R2 = 0.9877] in Bacillus thuringiensis var. kurstaki HD-73 was observed. A similar correlation between delta-endotoxin and PHB accumulation [Cry = 2.1573(PHB)-1.1248, R2 = 0.9181] was found. A minimum PHB accumulation of 0.52 mg l(-1) was required before the onset of delta-endotoxin production.
authors.affiliation: Department of Biotechnology, Centro de Investigación y de Estudios Avanzados del IPN, Mexico City, Mexico. fermin@cinvestav.mx
authors.forename: A Karin
authors.initials: AK
authors.lastname: Navarro
authors.forename: Reynold R
authors.initials: RR
authors.lastname: Farrera
authors.forename: Ruth
authors.initials: R
authors.lastname: López
authors.forename: Fermín
authors.initials: F
authors.lastname: Pérez-Guevara
mesh_terms: D001413:Bacillus thuringiensis / Q000254:growth & development / Q000378:metabolism* / Q000502:physiology; D000083722:Bacillus thuringiensis Toxins; D001426:Bacterial Proteins / Q000096:biosynthesis*; D001427:Bacterial Toxins / Q000096:biosynthesis*; D001709:Biotechnology; D004731:Endotoxins / Q000096:biosynthesis*; D005285:Fermentation; D006460:Hemolysin Proteins / Q000096:biosynthesis*; D006885:Hydroxybutyrates / Q000378:metabolism*; D007700:Kinetics; D011091:Polyesters / Q000378:metabolism*; D013171:Spores, Bacterial / Q000502:physiology; D000094122:Polyhydroxybutyrates
chemical_list: D000083722:Bacillus thuringiensis Toxins; D001426:Bacterial Proteins; D001427:Bacterial Toxins; D004731:Endotoxins; D006460:Hemolysin Proteins; D006885:Hydroxybutyrates; D011091:Polyesters; C030956:insecticidal crystal protein, Bacillus Thuringiensis; C003182:poly-beta-hydroxybutyrate; D000094122:Polyhydroxybutyrates