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| pubmed-article:8022943 | lifeskim:mentions | umls-concept:C0439148 | lld:lifeskim |
| pubmed-article:8022943 | lifeskim:mentions | umls-concept:C1979891 | lld:lifeskim |
| pubmed-article:8022943 | lifeskim:mentions | umls-concept:C0598079 | lld:lifeskim |
| pubmed-article:8022943 | lifeskim:mentions | umls-concept:C0348080 | lld:lifeskim |
| pubmed-article:8022943 | lifeskim:mentions | umls-concept:C1550605 | lld:lifeskim |
| pubmed-article:8022943 | lifeskim:mentions | umls-concept:C0456205 | lld:lifeskim |
| pubmed-article:8022943 | pubmed:issue | 3 | lld:pubmed |
| pubmed-article:8022943 | pubmed:dateCreated | 1994-8-4 | lld:pubmed |
| pubmed-article:8022943 | pubmed:abstractText | The filamentous nitrogen-fixing cyanobacterium Anabaena variabilis ATCC 29413 is capable of heterotrophic growth in complete darkness. After 6 months of continuous dark growth, both the autotrophic and heterotrophic cultures were found to have the same doubling time of 14 h. On a cellular basis, the chlorophyll content remained the same and the phycobilin content showed an increase in the dark-grown cultures. Fluorescence emission spectra at 77 K of dark-grown cells indicated that the phycobilisomes are functionally associated with photosystem II (PSII). Moreover, upon transfer to light, the dark-grown cells readily evolved oxygen. Although photosystem I (PSI) and whole chain-mediated electron transfer rates were comparable in both types of cultures, the rate of PSII-mediated electron transfer was found to be 20% higher in dark-grown cells. The PSI to PSII ratio changed from 6:1 in autotrophic cultures to 4:1 in the dark-grown cells. These changes in the rate of PSII electron transfer and in the stoichiometry between the two photosystems under dark, heterotrophic growth conditions were brought about by a preferential increase in the number of PSII units while the number of PSI units remained unchanged. The advantages of using this organism in the selection of PSI-deficient mutants are discussed. | lld:pubmed |
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| pubmed-article:8022943 | pubmed:language | eng | lld:pubmed |
| pubmed-article:8022943 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:8022943 | pubmed:citationSubset | IM | lld:pubmed |
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| pubmed-article:8022943 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:8022943 | pubmed:month | Nov | lld:pubmed |
| pubmed-article:8022943 | pubmed:issn | 0032-0889 | lld:pubmed |
| pubmed-article:8022943 | pubmed:author | pubmed-author:PakrasiH BHB | lld:pubmed |
| pubmed-article:8022943 | pubmed:author | pubmed-author:MannanR MRM | lld:pubmed |
| pubmed-article:8022943 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:8022943 | pubmed:volume | 103 | lld:pubmed |
| pubmed-article:8022943 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:8022943 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:8022943 | pubmed:pagination | 971-7 | lld:pubmed |
| pubmed-article:8022943 | pubmed:dateRevised | 2009-11-18 | lld:pubmed |
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| pubmed-article:8022943 | pubmed:year | 1993 | lld:pubmed |
| pubmed-article:8022943 | pubmed:articleTitle | Dark heterotrophic growth conditions result in an increase in the content of photosystem II units in the filamentous cyanobacterium Anabaena variabilis ATCC 29413. | lld:pubmed |
| pubmed-article:8022943 | pubmed:affiliation | Department of Biology, Washington University, St. Louis, Missouri 63130. | lld:pubmed |
| pubmed-article:8022943 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:8022943 | pubmed:publicationType | Research Support, U.S. Gov't, P.H.S. | lld:pubmed |
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