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dc.contributor.author
Perez, Rebeca
dc.contributor.author
Forchhammer, Karl
dc.contributor.author
Salerno, Graciela Lidia
dc.contributor.author
Maldener, Iris
dc.date.available
2017-01-02T20:29:27Z
dc.date.issued
2016-02
dc.identifier.citation
Perez, Rebeca; Forchhammer, Karl; Salerno, Graciela Lidia; Maldener, Iris; Clear differences in metabolic and morphological adaptations of akinetes of two Nostocales living in different habitats; Society for General Microbiology; Microbiology-uk; 162; 2; 2-2016; 214-223
dc.identifier.issn
1350-0872
dc.identifier.uri
http://hdl.handle.net/11336/10713
dc.description.abstract
Akinetes are resting spore-like cells formed by some heterocyst-forming filamentous cyanobacteria for surviving long periods of unfavourable conditions. We studied the development of akinetes in two model strains of cyanobacterial cell differentiation, the planktonic freshwater Anabaena variabilis ATCC 29413 and the terrestrial or symbiotic Nostoc punctiforme ATCC 29133, in response to low light and phosphate starvation. The best trigger of akinete differentiation of Anabaena variabilis was low light; that of N. punctiforme was phosphate starvation. Light and electron microscopy revealed that akinetes of both species differed from vegetative cells by their larger size, different cell morphology and large number of intracellular granules. Anabaena variabilis akinetes had a multilayer envelope; those of N. punctiforme had a simpler envelope. During akinete development of Anabaena variabilis, the amount of the storage compounds cyanophycin and glycogen increased transiently, whereas in N. punctiforme, cyanophycin and lipid droplets increased transiently. Photosynthesis and respiration decreased during akinete differentiation in both species, and remained at a low level in mature akinetes. The clear differences in the metabolic and morphological adaptations of akinetes of the two species could be related to their different lifestyles. The results pave the way for genetic and functional studies of akinete differentiation in these species.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Society for General Microbiology
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Akinetes
dc.subject
Anabaena Variabilis
dc.subject
Nostoc Punctiforme
dc.subject
Cyanophycin
dc.subject.classification
Biología Celular, Microbiología
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Clear differences in metabolic and morphological adaptations of akinetes of two Nostocales living in different habitats
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-01-02T18:33:55Z
dc.identifier.eissn
1465-2080
dc.journal.volume
162
dc.journal.number
2
dc.journal.pagination
214-223
dc.journal.pais
Reino Unido
dc.description.fil
Fil: Perez, Rebeca. University of Tübingen; Alemania
dc.description.fil
Fil: Forchhammer, Karl. University of Tübingen; Alemania
dc.description.fil
Fil: Salerno, Graciela Lidia. Fundación para Investigaciones Biológicas Aplicadas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigaciones en Biodiversidad y Biotecnología; Argentina
dc.description.fil
Fil: Maldener, Iris. University of Tübingen; Alemania
dc.journal.title
Microbiology-uk
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1099/mic.0.000230
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://mic.microbiologyresearch.org/content/journal/micro/10.1099/mic.0.000230
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