dc.contributor.author |
Muhammad Khalid |
|
dc.contributor.author |
Muhammad Arshad |
|
dc.contributor.author |
Azeem Khatid |
|
dc.contributor.author |
Zahir Ahmad Zahir |
|
dc.date.accessioned |
2023-03-14T03:24:07Z |
|
dc.date.available |
2023-03-14T03:24:07Z |
|
dc.date.issued |
2001-08-01 |
|
dc.identifier.citation |
Khalid, M., Arshad, M., Khalid, A., & Zahir, Z. A. (2001). Biosynthesis of auxins by Azotobacter. Pakistan Journal of Soil Science (Pakistan). |
en_US |
dc.identifier.issn |
1019-729X |
|
dc.identifier.uri |
http://142.54.178.187:9060/xmlui/handle/123456789/18745 |
|
dc.description.abstract |
Various Azotobacter cultures were isolated from the rhizosphere of maize. Ten fast growing cultures were selected (numbered as Zi, Zi, Zie), and evaluated for their potential to produce auxins (lAA-equivalents) in vitro both in the absence and presence of auxin precursor, L-tryptophan (L-TRP). Azotobacter cultures varied in their auxin producing ability and Z' was the most efficient auxin (3.1 fig lAA-equivalents mL') producer in the absence of L-TRP. Supplementation of the medium with L-TRP @ Iff1 and lfr'M stimulated auxin production by almost 2-fold over the unamended control. Various environmental factors strongly affected I.-TRP-dependent auxin biosynthesis in soil, and optimal productions were found at 6.0 mg L-TRP g'' soil, 6.0 mg glucose g~'
soil, pH7.0, 40 °C temperature, shaking @ of 150 rpm, no nitrogen and 48 hours of incubation. Application of antibiotics (streptomycin or erythromycin) had inhibitory effects on auxin biosynthesis in soil. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Faisalabad: Institute of Soil & Environmental Sciences University of Agriculture, Faisalabad. Pakistan |
en_US |
dc.title |
BIOSYNTHESIS OF AUXINS BY AZOTOBACTER |
en_US |
dc.type |
Article |
en_US |