Morphological traits in nitrogen fixing heterocytous cyanobacteria: possible links between morphology and eco-physiology

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Heterocytous cyanobacteria are able to fix nitrogen (in heterocytes) and to produce dormant cells (akinetes). Heterocyte and akinete shape, size, and relative position have taxonomical relevance and possibly ecological value too. We collected—from literature and nature—and compared morphological dat...

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Autores principales:	De Tezanos Pinto, Paula, Devercelli, Melina
Publicado:	2016
Materias:	Akinete Heterocyte Phytoplankton Shape Size Traits
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v764_n1_p_deTezanosPinto http://hdl.handle.net/20.500.12110/paper_00188158_v764_n1_p_deTezanosPinto
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00188158_v764_n1_p_deTezanosPinto
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spelling	paper:paper_00188158_v764_n1_p_deTezanosPinto2023-06-08T14:39:59Z Morphological traits in nitrogen fixing heterocytous cyanobacteria: possible links between morphology and eco-physiology De Tezanos Pinto, Paula Devercelli, Melina Akinete Heterocyte Phytoplankton Shape Size Traits Heterocytous cyanobacteria are able to fix nitrogen (in heterocytes) and to produce dormant cells (akinetes). Heterocyte and akinete shape, size, and relative position have taxonomical relevance and possibly ecological value too. We collected—from literature and nature—and compared morphological data on vegetative cells, heterocytes, and akinetes across four genera taxonomically separated from Anabaena. In average, heterocyte size doubled that of vegetative cells—probably because of extra cell wall deposition. Heterocyte morphology was remarkably similar across genera, both in size and shape (spherical). The latter may decrease oxygen diffusion from adjoining vegetative cells. Akinetes were huge (one order of magnitude bigger) compared to vegetative cells, probably because of its massive genome replication, extra deposition of wall layers, allocation of storage and number of vegetative cells fused during akinete differentiation. Akinete shape was mostly cylindrical, or oval, but rarely spherical. In line with molecular data, we found morphological differences between Anabaena (non-aerotopated, soil or benthic) and Dolichospermum (aerotopated, planktonic), including vegetative cell size, and akinete size, shape, and relative position to the heterocyte. Differences may relate to adaptations to their contrasting environments (benthic versus planktic). Further research is needed to generalize our results to other heterocytous genera. © 2015 Springer International Publishing Switzerland Fil:de Tezanos Pinto, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Devercelli, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v764_n1_p_deTezanosPinto http://hdl.handle.net/20.500.12110/paper_00188158_v764_n1_p_deTezanosPinto
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Akinete Heterocyte Phytoplankton Shape Size Traits
spellingShingle	Akinete Heterocyte Phytoplankton Shape Size Traits De Tezanos Pinto, Paula Devercelli, Melina Morphological traits in nitrogen fixing heterocytous cyanobacteria: possible links between morphology and eco-physiology
topic_facet	Akinete Heterocyte Phytoplankton Shape Size Traits
description	Heterocytous cyanobacteria are able to fix nitrogen (in heterocytes) and to produce dormant cells (akinetes). Heterocyte and akinete shape, size, and relative position have taxonomical relevance and possibly ecological value too. We collected—from literature and nature—and compared morphological data on vegetative cells, heterocytes, and akinetes across four genera taxonomically separated from Anabaena. In average, heterocyte size doubled that of vegetative cells—probably because of extra cell wall deposition. Heterocyte morphology was remarkably similar across genera, both in size and shape (spherical). The latter may decrease oxygen diffusion from adjoining vegetative cells. Akinetes were huge (one order of magnitude bigger) compared to vegetative cells, probably because of its massive genome replication, extra deposition of wall layers, allocation of storage and number of vegetative cells fused during akinete differentiation. Akinete shape was mostly cylindrical, or oval, but rarely spherical. In line with molecular data, we found morphological differences between Anabaena (non-aerotopated, soil or benthic) and Dolichospermum (aerotopated, planktonic), including vegetative cell size, and akinete size, shape, and relative position to the heterocyte. Differences may relate to adaptations to their contrasting environments (benthic versus planktic). Further research is needed to generalize our results to other heterocytous genera. © 2015 Springer International Publishing Switzerland
author	De Tezanos Pinto, Paula Devercelli, Melina
author_facet	De Tezanos Pinto, Paula Devercelli, Melina
author_sort	De Tezanos Pinto, Paula
title	Morphological traits in nitrogen fixing heterocytous cyanobacteria: possible links between morphology and eco-physiology
title_short	Morphological traits in nitrogen fixing heterocytous cyanobacteria: possible links between morphology and eco-physiology
title_full	Morphological traits in nitrogen fixing heterocytous cyanobacteria: possible links between morphology and eco-physiology
title_fullStr	Morphological traits in nitrogen fixing heterocytous cyanobacteria: possible links between morphology and eco-physiology
title_full_unstemmed	Morphological traits in nitrogen fixing heterocytous cyanobacteria: possible links between morphology and eco-physiology
title_sort	morphological traits in nitrogen fixing heterocytous cyanobacteria: possible links between morphology and eco-physiology
publishDate	2016
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v764_n1_p_deTezanosPinto http://hdl.handle.net/20.500.12110/paper_00188158_v764_n1_p_deTezanosPinto
work_keys_str_mv	AT detezanospintopaula morphologicaltraitsinnitrogenfixingheterocytouscyanobacteriapossiblelinksbetweenmorphologyandecophysiology AT devercellimelina morphologicaltraitsinnitrogenfixingheterocytouscyanobacteriapossiblelinksbetweenmorphologyandecophysiology
_version_	1768545722581385216

Morphological traits in nitrogen fixing heterocytous cyanobacteria: possible links between morphology and eco-physiology

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