The effect of iron-chelating agents on Magnetospirillum magneticum strain AMB-1: stimulated growth and magnetosome production and improved magnetosome heating properties

Abstract : The introduction of various iron-chelating agents to the Magnetospirillum magneticum strain AMB-1 bacterial growth medium stimulated the growth of M. magneticum strain AMB-1 magnetotactic bacteria and enhanced the production of magnetosomes. After 7 days of growth, the number of bacteria and the production of magnetosomes were increased in the presence of iron-chelating agents by factors of up to ∼2 and ∼6, respectively. The presence of iron-chelating agents also produced an increase in magnetosome size and chain length and yielded improved magnetosome heating properties. The specific absorption rate of suspensions of magnetosome chains isolated from M. magneticum strain AMB-1 magnetotactic bacteria, measured under the application of an alternating magnetic field of average field strength ∼20 mT and frequency 198 kHz, increased from ∼222 W/gFe in the absence of iron-chelating agent up to ∼444 W/gFe in the presence of 4 μM rhodamine B and to ∼723 W/gFe in the presence of 4 μM EDTA. These observations were made at an iron concentration of 20 μM and iron-chelating agent concentrations below 40 μM.
Type de document :
Article dans une revue
Applied Microbiology and Biotechnology, Springer Verlag, 2012, 96 (3), pp.663-670. 〈10.1007/s00253-012-4199-5〉
Liste complète des métadonnées

Littérature citée [45 références]  Voir  Masquer  Télécharger

https://hal.sorbonne-universite.fr/hal-01547086
Contributeur : Gestionnaire Hal-Upmc <>
Soumis le : lundi 26 juin 2017 - 13:24:53
Dernière modification le : mercredi 21 mars 2018 - 18:57:53
Document(s) archivé(s) le : mercredi 17 janvier 2018 - 19:20:53

Fichier

Alphandery_2012_The_effect_of....
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

Citation

Edouard Alphandéry, Matthieu Amor, François Guyot, Imène Chebbi. The effect of iron-chelating agents on Magnetospirillum magneticum strain AMB-1: stimulated growth and magnetosome production and improved magnetosome heating properties. Applied Microbiology and Biotechnology, Springer Verlag, 2012, 96 (3), pp.663-670. 〈10.1007/s00253-012-4199-5〉. 〈hal-01547086〉

Partager

Métriques

Consultations de la notice

163

Téléchargements de fichiers

83