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Degradation of 3 ,5 - dinitro - 0- cresol by
rhizobium and azotobacter SPP.
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Abstract: Degradation of the herbicide 3 , 5 - dinitro - 0 – cresol (DNOC ) by 31 strains of rhizobia and 5 strains of azotobacter is reported . Tolerance of the herbicide in culture was greater for Rhizobium trifolii, R. meliloti, R. leguminosarum, R. Phaseoli, Azotobacter insigne , A. vinelandii , A . chroococcum and Beijerinkia indica (250ppm ) than for R. japonicum, R. lupini and cowpea rhizobia (25 ppm ). Degradation of the herbicide varied from slight to almost complete.
Growth of 3 strains of R . leguminosarum was stimulated by 250 ppm of DNOC . Aprominent degradation product was identified chromatographically as 3–amino–5– nitro–0–cresol. Two other products were detected in 3–day cultures and two more appeared in 7–day cultures. The R, values and optical density maxima for these unknown compounds are given . The results suggested that rhizobia degrade DNOC by a reductive pathway .
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| Publication year |
1970
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| Pages |
163-166
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| Availability location |
المعمل المركزىلبحوث الحشائش-9شارع الجامعة بالجيزة.
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| Availability number |
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| Organization Name |
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| serial title |
Soil Biol. Biochem.
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| Author(s) from ARC |
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| External authors (outside ARC) |
Y . A . HAMDI
Ministry of Agriculture , Orman, Giza , U . A . R .
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| Agris Categories |
Weeds and weed control
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AGROVOC
TERMS |
Degradation.
Weed control.
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| Proposed Agrovoc |
rhizobium spp;azotobacter spp;3,5-dinitro-o-cresol;
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| Publication Type |
Journal
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