Abstract:
:The occurrence of heterotrophic nitrification in nitrogen-starved cells of Ankistrodesmus braunii was confirmed. The levels of nitrate and nitrite were measured over a period of four weeks. The validity of quantitative determinations in the presence of highly active nitrate and nitrite reductases is discussed. Whereas free hydroxylamine as an intermediate could not be detected, increased hydroxylamine oxidase activity was found in nitrogen-starved cultures. Nitrite reductase and hydroxylamine oxidase can be assigned to particles by sucrose density gradient centrifugation. The possible involvement of microbodies, which were found to be present in Ankistrodesmus, in metabolic processes during nitrogen starvation is discussed.
journal_name
Plantajournal_title
Plantaauthors
Spiller H,Dietsch E,Kessler Edoi
10.1007/BF00390025subject
Has Abstractpub_date
1976-01-01 00:00:00pages
175-81issue
2eissn
0032-0935issn
1432-2048journal_volume
129pub_type
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