• [email protected]
  • +971 507 888 742
Submit Manuscript
SciAlert
  • Home
  • Journals
  • Information
    • For Authors
    • For Referees
    • For Librarian
    • For Societies
  • Contact
  1. Journal of Biological Sciences
  2. Vol 1 (8), 2001
  3. 750-754
  • Online First
  • Current Issue
  • Previous Issues
  • More Information
    Aims and Scope Editorial Board Guide to Authors Article Processing Charges
    Submit a Manuscript

Journal of Biological Sciences

Year: 2001 | Volume: 1 | Issue: 8 | Page No.: 750-754
DOI: 10.3923/jbs.2001.750.754

Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

Article Trend



Total views 137

Search


Authors


Azeem Khalid


Muhammad Arshad


Zahir Ahmad Zahir


Muhammad Khalid


Keywords


  • Auxins
  • rhizobacteria
  • environmental factors
Research Article

Relative Efficiency of Rhizobacteria for Auxin Biosynthesis

Azeem Khalid, Muhammad Arshad, Zahir Ahmad Zahir and Muhammad Khalid
Thirty-one cultures of bacteria (W1, W2, ... W31) were isolated from the rhizosphere of different varieties of wheat and twenty-eight (R1, R2 ... R28) from the rhizosphere of rice growing at different sites. They were tested in the liquid medium and in soil to evaluate their relative efficacy for auxin biosynthesis by colorimetry. Among different rhizobacterial isolates, W9 showed significantly higher auxin production in liquid culture both in the presence and absence of its precursor, L-tryptophan (L-TRP). Four isolates showing maximum auxin production from each crop were selected. They were further tested for their ability to produce L-TRP (6.0 g kg-1 soil)-derived auxins both in non-sterilized and sterilized soils at 7.0 pH, 35oC temperature and 48 hours incubation period under static and shaking (150 rev. min-1) conditions. L-Tryptophan-derived auxin biosynthesis was also measured by supplementing with glucose (6.0 g kg-1 soil) under similar conditions. Results revealed that isolates W11 and W9 showed maximum auxin production at 6.0 g L-TRP kg-1 soil which was 66.3 and 27.5 μg g-1 soil in non-sterilized and sterilized soils, respectively, under static conditions. However, auxin synthesis at shaking condition was doubled to that produced under static environment. Rice isolates R20 and R27 were most active in producing auxins when soils were supplemented with glucose along with L-TRP. Glucose application had also positive effect on L-TRP-derived auxins over L-TRP alone.
PDF References Citation

How to cite this article

Azeem Khalid, Muhammad Arshad, Zahir Ahmad Zahir and Muhammad Khalid, 2001. Relative Efficiency of Rhizobacteria for Auxin Biosynthesis . Journal of Biological Sciences, 1: 750-754.

DOI: 10.3923/jbs.2001.750.754

URL: https://scialert.net/abstract/?doi=jbs.2001.750.754

Leave a Comment


Your email address will not be published. Required fields are marked *

Useful Links

  • Journals
  • For Authors
  • For Referees
  • For Librarian
  • For Socities

Contact Us

Office Number 1128,
Tamani Arts Building,
Business Bay,
Deira, Dubai, UAE

Phone: +971 507 888 742
Email: [email protected]

About Science Alert

Science Alert is a technology platform and service provider for scholarly publishers, helping them to publish and distribute their content online. We provide a range of services, including hosting, design, and digital marketing, as well as analytics and other tools to help publishers understand their audience and optimize their content. Science Alert works with a wide variety of publishers, including academic societies, universities, and commercial publishers.

Follow Us
© Copyright Science Alert. All Rights Reserved