Nitrogen-fixing, photosynthetic, anaerobic bacteria associated with pelagic copepods
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چکیده
منابع مشابه
Nitrogen-fixing, photosynthetic, anaerobic bacteria associated with pelagic copepods
Purple sulfur bacteria are photosynthetic, anaerobic microorganisms that fix carbon dioxide using hydrogen sulfide as an electron donor; many are also nitrogen fixers. Because of t h e ~ r requirements for sulfide or orgamc carbon as electron donors in anoxygenic photosynthesis, these bacteria are generally thought to be l im~ted to shallow, organic-nch, anoxic environments such as subtidal mar...
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Two ferredoxins have been purified from N2-fixing Mycobacterium flavum. Ferredoxin I had a minimum molecular weight (by amino acid analysis) of 11 230 and contained 7.4 mol Fe and 7.0 mol S2per mol. The ratio of the absorbance at 400 nm to that at 275 nm was 0.7. Ferredoxin I1 had a minimum molecular weight of 13478 and contained 3.4 mol Fe and 3.2 mol S2per mol. The ratio of the absorbance at ...
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Nitrogen-fixing activity associated with different wetland rice varieties was measured at various growth stages by an in situ acetylene reduction method after the activities of blue-green algae (cyanobacteria) in the flood water and on the lower portion of the rice stem were eliminated. Nitrogen-fixing activities associated with rice varieties differed with plant growth stages. The activities i...
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Nitrogen is an essential element for many biological processes, including those occurring in plants (Ogura et al., 2006). Despite the abundance of atmospheric nitrogen, production of nitrogen fertilisers by the Harber–Bosch process is increasing annually due to the deficiency of ammonia produced by biological nitrogen fixation—the enzyme-catalyzed reduction of nitrogen gas (N2). Concern over ‘g...
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ژورنال
عنوان ژورنال: Aquatic Microbial Ecology
سال: 1997
ISSN: 0948-3055,1616-1564
DOI: 10.3354/ame012105