Results 31 to 40 of about 9,744 (190)
Abstrak Penambatan nitrogen oleh bakteri rhizosfer dapat dimanfaatkan untuk menyiasati dampak salinitas pada tanah sawah pesisir. Kemampuan tersebut disebabkan oleh aktivitas nitrogenase yang disandikan gen nifH pada komponen II.
Dwi Ningsih Susilowati, Mamik Setyowati
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Nitrogenase Activity and Photosynthesis in Plectonema boryanum [PDF]
Nitrogen-starved Plectonema boryanum 594 cultures flushed with N 2 /CO 2 or A/CO 2 (99.7%/0.3%, vol/vol) exhibited nitrogenase activity when assayed either by acetylene reduction or hydrogen evolution. Oxygen evolution activities and phycocyanin
N M, Weare, J R, Benemann
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Adaptability of a nitrogen-fixing strain W12 to the diverse environmental factors
Effects of diverse environmental factors on the growth and nitrogenase activity of a nitrogenfixing bacteria strain W12 were investigated in our experiment.
ZHANG Li-mei, FANG Ping, JI Tian-wei
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Phosphate solubilizing bacteria stimulate wheat rhizosphere and endosphere biological nitrogen fixation by improving phosphorus content [PDF]
Phosphate (P) availability often limits biological nitrogen fixation (BNF) by diazotrophic bacteria. In soil, only 0.1% of the total P is available for plant uptake.
Yongbin Li +3 more
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Ammonium inhibition of nitrogenase activity in Herbaspirillum seropedicae [PDF]
The effect of oxygen, ammonium ion, and amino acids on nitrogenase activity in the root-associated N2-fixing bacterium Herbaspirillum seropedicae was investigated in comparison with Azospirillum spp. and Rhodospirillum rubrum. H. seropedicae is microaerophilic, and its optimal dissolved oxygen level is from 0.04 to 0.2 kPa for dinitrogen fixation but ...
H, Fu, R H, Burris
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Nodule Invasion and Symbiosome Differentiation During Rhizobium etli-Phaseolus vulgaris Symbiosis
By means of a detailed ultrastructural analysis of nodules induced by Rhizobium etli on the roots of Phaseolus vulgaris, we observe that the development of host-invaded cells is not synchronous.
Michele Cermola +5 more
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The photosynthetic α‐proteobacterium Rhodobacter capsulatus reduces and thereby fixes atmospheric dinitrogen (N2) by a molybdenum (Mo)‐nitrogenase and an iron‐only (Fe)‐nitrogenase.
Lisa Demtröder +2 more
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In Anabaena variabilis, the nif1 genes, which are activated by CnfR1, produce a Mo-nitrogenase that is expressed only in heterocysts. Similarly, the nif2 genes, which are activated by CnfR2, make a Mo-nitrogenase that is expressed only in anaerobic ...
Brenda S. Pratte, Teresa Thiel
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Mutational and Transcriptional Analysis of the Type III Secretion System of Bradyrhizobium japonicum
Sequencing the symbiotic region of Bradyrhizobium japonicum revealed a gene cluster (tts) encoding a type III secretion system (TTSS) that is similar to those found in Mesorhizobium loti MAFF303099 and Rhizobium strain NGR234.
Andrea Krause +2 more
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Dependence of nitrogenase switch-off upon oxygen stress on the nitrogenase activity in Azotobacter vinelandii [PDF]
Azotobacter vinelandii was grown diazotrophically in chemostat cultures limited by sucrose, citrate, or acetate. Specific activities of cellular oxygen consumption (qO2) and nitrogenase (acetylene reduction) were measured in situ at different dilution rates (D, representing the specific growth rate mu at steady state).
J, Kuhla, J, Oelze
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