Pattern of akinete differentiation in the cyanobacteriumScytonema fritschii

1998 ◽  
Vol 43 (6) ◽  
pp. 649-656 ◽  
Author(s):  
T. A. Sarma ◽  
R. Ghai
Keyword(s):  
Akinete Differentiation

Potential triggers of akinete differentiation in Nodularia spumigena (Cyanobacteriaceae) isolated from Australia

Hydrobiologia ◽  
2011 ◽  
Vol 671 (1) ◽  
pp. 165-180 ◽  
Author(s):  
Jackie H. Myers ◽  
John Beardall ◽  
Graeme Allinson ◽  
Scott Salzman ◽  
Simon Robertson ◽  
...  
Keyword(s):  
Nodularia Spumigena ◽  
Akinete Differentiation

Nutrient stress causes akinete differentiation in cyanobacteriumAnabaena torulosa with concomitant increase in nitrogen reserve substances

2004 ◽  
Vol 49 (5) ◽  
pp. 557-561 ◽  
Author(s):  
T. A. Sarma ◽  
Gurpreet Ahuja ◽  
J. I. S. Khattar
Keyword(s):  
Nutrient Stress ◽  
Concomitant Increase ◽  
Akinete Differentiation

Factors affecting akinete differentiation in Cylindrospermopsis raciborskii (Nostocales, Cyanobacteria)

2005 ◽  
Vol 50 (2) ◽  
pp. 345-352 ◽  
Author(s):  
DAVID MOORE ◽  
MARK O'DONOHUE ◽  
CORINNE GARNETT ◽  
CHRISTA CRITCHLEY ◽  
GLEN SHAW
Keyword(s):  
Cylindrospermopsis Raciborskii ◽  
Factors Affecting ◽  
Akinete Differentiation

Heterocyst and akinete differentiation in cyanobacteria: a view toward cyanobacterial symbiosis

2020 ◽  
pp. 235-248
Author(s):  
Pratika Singh ◽  
Azmi Khan ◽  
Amrita Srivastava
Keyword(s):  
Akinete Differentiation

Two mutations that block heterocyst differentiation have different effects on akinete differentiation in Nostoc ellipsosporum

1994 ◽  
Vol 12 (4) ◽  
pp. 679-684 ◽  
Author(s):  
F. Leganés ◽  
F. Fernández-Piñas ◽  
C. Peter Wolk
Keyword(s):  
Heterocyst Differentiation ◽  
Akinete Differentiation ◽  
Nostoc Ellipsosporum

Potential triggers for akinete differentiation in an Australian strain of the cyanobacterium Cylindrospermopsis raciborskii (AWT 205/1)

Hydrobiologia ◽  
2003 ◽  
Vol 506-509 (1-3) ◽  
pp. 175-180 ◽  
Author(s):  
David Moore ◽  
Mark O'Donohue ◽  
Glen Shaw ◽  
Christa Critchley
Keyword(s):  
Cylindrospermopsis Raciborskii ◽  
Akinete Differentiation

Phosphorus deficiency, nitrogen assimilation and akinete differentiation in the cyanobacteriumAnabaena torulosa

1992 ◽  
Vol 37 (3) ◽  
pp. 223-226 ◽  
Author(s):  
T. A. Sarma ◽  
J. I. S. Khattar
Keyword(s):  
Nitrogen Assimilation ◽  
Phosphorus Deficiency ◽  
Akinete Differentiation

scholarly journals The Formation of Spore-Like Akinetes: A Survival Strategy of Filamentous Cyanobacteria

2021 ◽  
pp. 1-10
Author(s):  
Ritu Garg ◽  
Iris Maldener
Keyword(s):  
Physiological Function ◽  
Growth Conditions ◽  
Multilayered Structure ◽  
Nitrogen Storage ◽  
Filamentous Cyanobacterium ◽  
Filamentous Cyanobacteria ◽  
Vegetative Cells ◽  
Cellular Processes ◽  
Dormant Cells ◽  
Akinete Differentiation

Some cyanobacteria of the order Nostocales can form akinetes, spore-like dormant cells resistant to various unfavorable environmental fluctuations. Akinetes are larger than vegetative cells and contain large quantities of reserve products, mainly glycogen and the nitrogen storage polypeptide polymer cyanophycin. Akinetes are enveloped in a thick protective coat containing a multilayered structure and are able to germinate into new vegetative cells under suitable growth conditions. Here, we summarize the significant morphological and physiological changes that occur during akinete differentiation and germination and present our investigation of the physiological function of the storage polymer cyanophycin in these cellular processes. We show that the cyanophycin production is not required for formation and germination of the akinetes in the filamentous cyanobacterium <i>Anabaena variabilis</i> ATCC 29413.

Effets de la carence en sodium sur la cytologie de la cyanobactérie Anabaena cylindrica Lemm

1989 ◽  
Vol 35 (2) ◽  
pp. 322-328 ◽  
Author(s):  
Monique Roussard-Jacquemin
Keyword(s):  
Nitrate Uptake ◽  
Cell Types ◽  
Ultrastructural Changes ◽  
Anabaena Cylindrica ◽  
Sodium Deficiency ◽  
Heterocyst Differentiation ◽  
Akinete Differentiation ◽  
Cyanobacterium Anabaena ◽  
Enriched Cultures ◽  
Further Development

The effects of sodium deficiency on the distribution and the ultrastructural aspect of the various cell types in the filaments were studied during growth of Anabaena cylindrica (strain 1403/2A) in presence of different amounts of nitrate (0, 1 or 10 mequiv./L). Visible symptoms such as chlorosis and reduced growth were clearly apparent several days after inoculation only when nitrate was present in the medium. The filaments broke up and contained exclusively vegetative cells rich in polyglucan granules and showing ultrastructural analogies with akinetes. In absence of sodium increasing nitrate uptake and nitrite efflux were observed in nitrate-enriched cultures (10 mequiv./L). The amount of excreted nitrite was too low to explain the described disturbances. The needs for sodium were lower for cultures without added nitrate. However, whatever the medium, the sodium deficiency brought about a delay in heterocyst differentiation without detrimental effect to the further development of cultures.Key words: cyanobacterium, Anabaena cylindrica, sodium deficiency, heterocyst differentiation, akinete differentiation, ultrastructural changes, nitrate uptake, nitrite efflux.

scholarly journals Tansley Review No. 107. Heterocyst and akinete differentiation in cyanobacteria

1999 ◽  
Vol 144 (1) ◽  
pp. 3-33 ◽  
Author(s):  
DAVID G. ADAMS ◽  
PAULA S. DUGGAN
Keyword(s):  
Akinete Differentiation
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