Biosynthesis of Indole-3-Acetic Acid by New Klebsiella oxytoca Free and Immobilized Cells on Inorganic Matrices
Joint Authors
Watanabe, Cecília S. F.
Gonçalves, Regina A. C.
Gonçalves, José E.
Celloto, Valéria R.
Matioli, Graciette
Oliveira, Arildo J. B.
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-05-01
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Medicine
Information Technology and Computer Science
Abstract EN
While many natural and synthetic compounds exhibit auxin-like activity in bioassays, indole-3-acetic acid (IAA) is recognized as the key auxin in most plants.
IAA has been implicated in almost all aspects of plant growth and development and a large array of bacteria have been reported to enhance plant growth.
Cells of Klebsiella oxytoca isolated from the rhizosphere of Aspidosperma polyneuron and immobilized by adsorption on different inorganic matrices were used for IAA production.
The matrices were prepared by the sol-gel method and the silica-titanium was the most suitable matrix for effective immobilization.
In operational stability assays, IAA production was maintained after four cycles of production, obtaining 42.80±2.03 μg mL−1 of IAA in the third cycle, which corresponds to a 54% increase in production in relation to the first cycle, whereas free cells began losing activity after the first cycle.
After 90 days of storage at 4°C the immobilized cells showed the slight reduction of IAA production without significant loss of activity.
American Psychological Association (APA)
Celloto, Valéria R.& Oliveira, Arildo J. B.& Gonçalves, José E.& Watanabe, Cecília S. F.& Matioli, Graciette& Gonçalves, Regina A. C.. 2012. Biosynthesis of Indole-3-Acetic Acid by New Klebsiella oxytoca Free and Immobilized Cells on Inorganic Matrices. The Scientific World Journal،Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-476270
Modern Language Association (MLA)
Celloto, Valéria R.…[et al.]. Biosynthesis of Indole-3-Acetic Acid by New Klebsiella oxytoca Free and Immobilized Cells on Inorganic Matrices. The Scientific World Journal No. 2012 (2012), pp.1-7.
https://search.emarefa.net/detail/BIM-476270
American Medical Association (AMA)
Celloto, Valéria R.& Oliveira, Arildo J. B.& Gonçalves, José E.& Watanabe, Cecília S. F.& Matioli, Graciette& Gonçalves, Regina A. C.. Biosynthesis of Indole-3-Acetic Acid by New Klebsiella oxytoca Free and Immobilized Cells on Inorganic Matrices. The Scientific World Journal. 2012. Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-476270
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-476270