Results 151 to 160 of about 1,262 (192)
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Molecular circuit of heterocyst differentiation in cyanobacteria
Journal of Basic Microbiology, 2020AbstractDifferentiation commitment is one of the most complex mechanisms to study in biological science. One of the model systems used for understanding differentiation complexity is heterocyst development in cyanobacteria. Cyanobacteria have the capability of biological nitrogen fixation due to highly differentiated heterocyst cells. Once the nitrogen
Kunal Seth
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Heterocyst Differentiation and Nitrogen Fixation in Cyanobacteria
2007Cyanobacteria face the difficult problem of fixing nitrogen while generating oxygen. Some solve this problem by storing carbohydrate during the day and using the stored material to fuel nitrogen fixation during the night. Others, notably Trichodesmium, a filamentous organism that is one of the major nitrogen fixers in the ocean, fixes only during the ...
R Haselkorn, Haselkorn R
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Gene Expression during Heterocyst Differentiation
, 2013 Abstract Some cyanobacteria (oxygenic phototrophs) grow as chains of vegetative cells (filaments or trichomes). When placed in media lacking combined nitrogen, some cells in the filaments differentiate into N2-fixing heterocysts. The nitrogen fixation system is inactivated by oxygen, and the heterocyst provides a micro-oxic environment for ...
Antonia Herrero +2 more
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Genome rearrangements during Anabaena heterocyst differentiation
Canadian Journal of Botany, 1988 The filamentous cyanobacterium Anabaena sp. PCC 7120 produces specialized, terminally differentiated cells called heterocysts that are the sites of nitrogen fixation. The genome of Anabaena undergoes at least two specific developmentally regulated DNA rearrangements during heterocyst differentiation.
James W. Golden
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Response of heterocyst differentiation of Dolichospermum to different forms of nitrogen deficiency
Harmful AlgaeIn recent years, initiatives aimed at mitigating eutrophication have successfully reduced nitrogen and phosphorus concentrations in numerous lakes across China. Notably, the management of total nitrogen levels has prompted a shift in the dominant genera responsible for harmful algal blooms.
Fazhi Xie, Xiaoli Shi, Min Zhang
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Current Microbiology, 1980 Effects of a few amino acid analogs on growth and heterocyst differentiation have been studied in two nitrogen-fixing species ofAnabaena. All the analogs except α-methyl-DL-aspartic acid inhibited growth.
H D Kumar, Kumar H D
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On the reversibility of heterocyst differentiation
British Phycological Journal, 1974Heterocyst development in the blue-green alga Anabaena cylindrica Lemm. was arrested by ammonia at an early stage of differentiation only. No dedifferentiation or germination of heterocysts in the presence of ammonia could be detected.
S.A. Kulasooriya, Peter Fay
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Heterocyst Differentiation in Anabaena ambigua Rao
Biochemie und Physiologie der Pflanzen, 1973Summary The development of heterocysts in the blue-green alga Anabaena ambigua can be induced by the removal of combined nitrogen (ammonia) from the growth medium. Differentiation of heterocysts is found to be inhibited by actinomycin-D, puromycin, 5-fluorouracil, chloramphenicol, cyclohexamide.
Shanta R. Kale +2 more
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Heterocyst differentiation: from single mutants to global approaches
Trends in Microbiology, 2012There are several instances of cellular differentiation in prokaryotes, including the formation of spores in Bacillus, the fruiting bodies of Myxococcus, and the stalked cells of Caulobacter. The vegetative cells of particular filamentous cyanobacteria can differentiate into three different cell types: N(2)-fixing heterocysts, spore-like akinetes, and ...
Alicia M, Muro-Pastor, Wolfgang R, Hess
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Hacking heterocysts: advances in the genetic regulation of heterocyst differentiation
Archives of MicrobiologyHeterocyst differentiation in certain filamentous cyanobacteria is a multifaceted process essential for nitrogen fixation, orchestrated by a sophisticated regulatory network that encompasses several key stages. These include induction, pattern differentiation, commitment, extracellular layer formation, cell-cell communication, and ultimately, nitrogen ...
Sandhya Deora +3 more
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