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231225s2003 xx |||||o 00| ||eng c |
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|a 10.1046/j.1469-8137.2003.00901.x
|2 doi
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|a DE-627
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|a eng
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|a Stephens, Nicholas
|e verfasserin
|4 aut
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|a Interrelationships between the pathways of inorganic nitrogen assimilation in the cyanobacterium Gloeothece can be described using a mechanistic mathematical model
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|c 2003
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 20.04.2021
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a • A mathematical model is described that simulates the major features of the interactions between different nitrogen (N)-sources in the nonheterocystous diazotrophic cyanobacterium Gloeothece. • The interaction between ammonium and nitrate is related to the intracellular concentration of glutamine (GLN), which in turn is representative of cellular N-status. Development of nitrogenase activity is related to N-limitation but, once developed, continues for as long as there is sufficient glucan (carbon-reserve) in order to support N2 fixation and the assimilation of the resultant ammonium into amino acids. • Nitrogenase activity decreases in response to elevated N-status and also to increased net oxygen evolution, in keeping with biochemical reality. The model describes the diel cycle of C and N2 fixation as seen under alternating 12 h light and 12 h darkness, and also the N2 fixation cycle of about 40 h duration seen in cells cultured in continuous illumination. • This model has the potential to be adapted to describe N2 fixation in heterocystous cyanobacterium and in Trichodesmium
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|a Journal Article
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|a Assimilation
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| 650 |
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4 |
|a Gloeothece
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| 650 |
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4 |
|a N2 fixation
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| 650 |
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4 |
|a ammonium
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| 650 |
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4 |
|a cyanobacteria
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| 650 |
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|a model
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| 650 |
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|a nitrate
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| 700 |
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|a Flynn, Kevin J
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Gallon, John R
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 160(2003), 3 vom: 20. Dez., Seite 545-555
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
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|g volume:160
|g year:2003
|g number:3
|g day:20
|g month:12
|g pages:545-555
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|u http://dx.doi.org/10.1046/j.1469-8137.2003.00901.x
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