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Heterocyst formation in Anabaena
Current Opinion in Microbiology, 1998Heterocystous cyanobacteria grow as multicellular organisms with a distinct one-dimensional developmental pattern of single nitrogen-fixing heterocysts separated by approximately ten vegetative cells. Several genes have been identified that are required for heterocyst development and pattern formation.
J W, Golden, H S, Yoon
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Lipid Composition of Heterocysts
Nature, 1969WE have reported the isolation and partial characterization of a novel lipophilic glycoside which is apparently specific to nitrogen-fixing blue-green algae1. During these studies we noticed that a culture of Mastigocladus laminosus which had been grown in a medium containing ammonium salts synthesized no detectable quantities of the glycoside.
Walsby, AE, Nichols, BW
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Annual Review of Genetics, 1996
▪ Abstract Heterocysts are microaerobic, N2-fixing cells that form in a patterned array within O2-producing filamentous cyanobacteria. Structural features of heterocysts can be predicted from consideration of their physiology. This review focuses on the spacing mechanism that determines which cells will differentiate, and on the regulation of the ...
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▪ Abstract Heterocysts are microaerobic, N2-fixing cells that form in a patterned array within O2-producing filamentous cyanobacteria. Structural features of heterocysts can be predicted from consideration of their physiology. This review focuses on the spacing mechanism that determines which cells will differentiate, and on the regulation of the ...
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Nitrogenase activity in extracts of heterocystous and non-heterocystous blue-green algae
Archiv f�r Mikrobiologie, 1970Cell-free extracts capable of acetylene reduction and cyanide reduction have been prepared from heterocystous (Anabaena cylindrica) and non-heterocystous (Plectonema boryanum 594) blue-green algae. Extracts from Anabaena were obtained from cultures grown in blulk under aerobic conditions, while the Plectonema cultures were grown in bulk on nitrate ...
A, Haystead, R, Robinson, W D, Stewart
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Photoreduction of acetylene by heterocysts
Planta, 1971Heterocysts of aerobically grown Anabaena cylindrica can reduce acetylene in the light, without added cofactors, up to 30% as rapidly as can the intact filaments from which they are derived.
C P, Wolk, E, Wojciuch
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Heterocystous versus non-heterocystous cyanobacteria in microbial mats
1994Relative to biological demands, marine waters are often depleted in combined forms of nitrogen (Dugdale 1967). As such, the development of microbial mats in coastal marine environments is dependent on the fixation of atmospheric dinitrogen as the dominant source of biologically available N.
Lucas J. Stal +3 more
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Heterocyst formation in cyanobacteria
Current Opinion in Microbiology, 2000When deprived of combined nitrogen, many filamentous cyanobacteria develop a one-dimensional pattern of specialised nitrogen-fixing cells, known as heterocysts. Recent years have seen the identification and characterisation of some of the key genes and proteins involved in heterocyst development and spacing, including the positive regulator HetR and ...
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Pigments and lipids of heterocysts
Planta, 1969Heterocysts of autotrophically grown Anabaena cylindrica contain about 77% as much chlorophyll as do vegetative cells, have little phycocyanin, and appear to lack myxoxanthophyll. Heterocysts have a photosystem I. Lipids of the two cell types differ.
C P, Wolk, R D, Simon
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Organic Geochemistry, 2014
We investigated the effect of temperature on the heterocyst glycolipid (HG) composition of the diazotrophic heterocystous cyanobacteria Anabaena sp. strain CCY9613 and Nostoc sp. strain CCY9926 grown at 9, 12, 16, 20 and 24 °C. Both strains contained an overall similar composition of heterocyst glycolipids, with 1-(O-hexose)-3,25-hexacosanediols (HG26 ...
Bauersachs, T. +3 more
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We investigated the effect of temperature on the heterocyst glycolipid (HG) composition of the diazotrophic heterocystous cyanobacteria Anabaena sp. strain CCY9613 and Nostoc sp. strain CCY9926 grown at 9, 12, 16, 20 and 24 °C. Both strains contained an overall similar composition of heterocyst glycolipids, with 1-(O-hexose)-3,25-hexacosanediols (HG26 ...
Bauersachs, T. +3 more
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The Making of a Heterocyst in Cyanobacteria
Annual Review of Microbiology, 2022Heterocyst differentiation that occurs in some filamentous cyanobacteria, such as Anabaena sp. PCC 7120, provides a unique model for prokaryotic developmental biology. Heterocyst cells are formed in response to combined-nitrogen deprivation and possess a microoxic environment suitable for nitrogen fixation following extensive morphological and ...
Xiaoli, Zeng, Cheng-Cai, Zhang
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