Studies in gas production by bacteria

Lloyd, Blodwen; Cranston, John A.

doi:10.1042/bj0240529

Cited by 14 publications

(2 citation statements)

References 2 publications

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“…According to Lloyd and Cranston (1930) denitrification begins only under anaerobic conditions., Nevertheless, a very slight formation of gaseous nitrogen was also observed when the medium consisted of only one layer, that is with an abundant supply of air. Rusakova and Butkevitch (1941) observed a decline in denitrification due to the action of oxygen in experiments on sea-water denitrifiers.…”

Section: Chapt!r 8 Dep Dency Of Metabolism On the Redox Conditions Ofmentioning

confidence: 99%

The Importance of Physical-Chemical Factors (Ph and Rh2) for the Life Activity of Microorganisms

Rabotnova¹

1963

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Reprodu.ced by t CL EAR 1MG OU SE forIRINA L. RABOTNOVA. FOIEWORD TO THE GrRKAN TRANSLATIONI is not simple to translate a 3cientific work. writ.ten in a fpreign Zamxge and in the characteristic style of that language, so that it is also easily readable in its new style. This is espeoially "trie for translations from Russian. We worked hard, together with the a* , fir a good solution to this problem. If we have not always Ssu..,eeded, we beg the reader's indulgence.We havv followed the .ast edition of Bergey's Manual. 1957, for type despotc,•f b&c-cerla and aztinomycetes.We attempted to iden tily the types iiot fond there by using the 1959 German edition of Kraisilnikov's DiaNosis of bateria and A.tincoyQetes.Types whose dp,.gnation is not ascertainable either from the Manual or in Kras-... ra i.ioJ6.-ted in the footnotes. )I! q irigaluly it was believed that the two kinds of metabolism were quite independent of each other. According to this point of view the release of energy consumed for predominantly endothermic constructive processes depends only on the energy processes.Tausson (1950) observed that there is a relationship between dissimilatory and assimilatory metabolism. The products of the incomplete oxidation of the substrate are, therefore, not only valuable for thr. organism, because a certain amount of energy is released by their formation, but they are also important as building material for the construction of the bocy substances, Thus, for example, th.7 act as intermediate products in the formation of sugar Aolecule compounds that serve as starting material for the synthesis of amino acids. The complete oxidation of the substrate is not necessary for the utilization of the greatest possible amount of energy. The products of incomplete oxidation can serve synthesis as Ise-mimaafactured' itemu for whose assimilation slighter amounts of energy are reqmired. Clifton (1946Clifton ( , 1952) also sees, in biological synthesis, a series of reactions in which intermediate products from the catabolism of energy producing compounds participate. According to Clifton, the provision of compounds for constructive metabolism is more important than the total amount of released energy in the catabolism of organic compounds in respiration or fermentation WAtbbolinm. The acetyl group is one of the most important building materish of this origin. Synthetic and catatolic processes are, cjnseqaently, related to each other not only aco)rding to the balance of energy, but also according to soich-ometric relationships. The released energy is only a 'by-product 9 l similar to water and carbon dioxide. Veselov and his collaborators (1934, 1955) developed the ideas of Tausson, Clifton and others further.Synthesis dous not always occur with utilization of the energy content of organic compounds, as is the case with carbon heterotrophs. In carbon antotrohio microorganisms the reduction of C02, with which &asi-milation is stwrted, is tied to the supply of energy. Photoautotrophio orgaiisms are able to utilize light energy for thi...

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Section: Chapt!r 8 Dep Dency Of Metabolism On the Redox Conditions Ofmentioning

confidence: 99%

The Importance of Physical-Chemical Factors (Ph and Rh2) for the Life Activity of Microorganisms

Rabotnova¹

1963

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“…Hyponitrites also occur as intermediates in the reduction of nitrite to nitrogen (Blom, 19286;Lloyd & Cranston, 1930). Owing to the absence of data for hyponitrite the free-energy change of the reaction cannot be calculated.…”

Section: Reaction Group 12 Reduction Of Nitrate and Nitritementioning

confidence: 99%

The Nitrogen Cycle in the Sea

Cooper

1937

J. Mar. Biol. Ass.

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i and 2) Brandt (1899) first suggested that phytoplankton organisms must, by removing from the illuminated surface layers of the sea the nutrients required for their further growth, place a limit on their continued multiplication, and he and Raben for long worked on the problem (see Brandt, 1927, for review of earlier work). The thesis has been proved true beyond all doubt by work which has followed improvements in analytical technique by Atkins and Harvey. In many waters reserves of nitrate are formed during the winter months and are used up, often completely, with the coming of longer days. Interest is now centred on the mechanism by which the nitrate reserve is built up and depleted and on the role played by other compounds of nitrogen. The time has come to review the nitrogen problem as a whole and to assess the importance of many possible reactions in which nitrogen may be involved. The plan of this paper is based on Fig. 1, in which associated reactions are N204 -»-NMejO--NHMe, + CHjO Fig. 1. The numbers indicate the reaction group in which the reaction is considered in the text.

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The chemistry of mushroom composts. II.—Nitrogen changes during the composting and cropping processes

Burrows¹

1951

J Sci Food Agric

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The absolute losses of total nitrogen from composts during their preparation from straw and activators for mushroom cultivation and during their subsequent use for mushroom cropping were determined by methods described in Part I of this series. During composting, losses depended upon the amount of nitrogen originally present, upon the temperatures attained during composting and upon the readiness with which the nitrogen activators added were converted to ammonia. Losses of nitrogen during the cropping period were much larger than could be accounted for by its removal in the crop and it is concluded that bacterial denitrification to molecular nitrogen occurs.

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Studies in gas production by bacteria

Cited by 14 publications

References 2 publications

The Importance of Physical-Chemical Factors (Ph and Rh2) for the Life Activity of Microorganisms

The Importance of Physical-Chemical Factors (Ph and Rh2) for the Life Activity of Microorganisms

The Nitrogen Cycle in the Sea

The chemistry of mushroom composts. II.—Nitrogen changes during the composting and cropping processes

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