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BIOSYNTHESIS OF AUXINS BY AZOTOBACTER

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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


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