The Primitive Thylakoid-Less Cyanobacterium Gloeobacter Is a Common Rock-Dwelling Organism.

Cyanobacteria are an ancient group of photosynthetic prokaryotes, which are significant in biogeochemical cycles. The most primitive among living cyanobacteria, Gloeobacter violaceus, shows a unique ancestral cell organization with a complete absence of inner membranes (thylakoids) and an uncommon s...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Jan Mareš, Pavel Hrouzek, Radek Kaňa, Stefano Ventura, Otakar Strunecký, Jiří Komárek
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/153a07ff96154d569909884c2917a33c
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:153a07ff96154d569909884c2917a33c
record_format	dspace
spelling	oai:doaj.org-article:153a07ff96154d569909884c2917a33c2021-11-18T07:41:25ZThe Primitive Thylakoid-Less Cyanobacterium Gloeobacter Is a Common Rock-Dwelling Organism.1932-620310.1371/journal.pone.0066323https://doaj.org/article/153a07ff96154d569909884c2917a33c2013-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0066323https://doaj.org/toc/1932-6203Cyanobacteria are an ancient group of photosynthetic prokaryotes, which are significant in biogeochemical cycles. The most primitive among living cyanobacteria, Gloeobacter violaceus, shows a unique ancestral cell organization with a complete absence of inner membranes (thylakoids) and an uncommon structure of the photosynthetic apparatus. Numerous phylogenetic papers proved its basal position among all of the organisms and organelles capable of plant-like photosynthesis (i.e., cyanobacteria, chloroplasts of algae and plants). Hence, G. violaceus has become one of the key species in evolutionary study of photosynthetic life. It also numbers among the most widely used organisms in experimental photosynthesis research. Except for a few related culture isolates, there has been little data on the actual biology of Gloeobacter, being relegated to an "evolutionary curiosity" with an enigmatic identity. Here we show that members of the genus Gloeobacter probably are common rock-dwelling cyanobacteria. On the basis of morphological, ultrastructural, pigment, and phylogenetic comparisons of available Gloeobacter strains, as well as on the basis of three new independent isolates and historical type specimen, we have produced strong evidence as to the close relationship of Gloeobacter to a long known rock-dwelling cyanobacterial morphospecies Aphanothece caldariorum. Our results bring new clues to solving the 40 year old puzzle of the true biological identity of Gloeobacter violaceus, a model organism with a high value in several biological disciplines. A probable broader distribution of Gloeobacter in common wet-rock habitats worldwide is suggested by our data, and its ecological meaning is discussed taking into consideration the background of cyanobacterial evolution. We provide observations of previously unknown genetic variability and phenotypic plasticity, which we expect to be utilized by experimental and evolutionary researchers worldwide.Jan MarešPavel HrouzekRadek KaňaStefano VenturaOtakar StruneckýJiří KomárekPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 6, p e66323 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jan Mareš Pavel Hrouzek Radek Kaňa Stefano Ventura Otakar Strunecký Jiří Komárek The Primitive Thylakoid-Less Cyanobacterium Gloeobacter Is a Common Rock-Dwelling Organism.
description	Cyanobacteria are an ancient group of photosynthetic prokaryotes, which are significant in biogeochemical cycles. The most primitive among living cyanobacteria, Gloeobacter violaceus, shows a unique ancestral cell organization with a complete absence of inner membranes (thylakoids) and an uncommon structure of the photosynthetic apparatus. Numerous phylogenetic papers proved its basal position among all of the organisms and organelles capable of plant-like photosynthesis (i.e., cyanobacteria, chloroplasts of algae and plants). Hence, G. violaceus has become one of the key species in evolutionary study of photosynthetic life. It also numbers among the most widely used organisms in experimental photosynthesis research. Except for a few related culture isolates, there has been little data on the actual biology of Gloeobacter, being relegated to an "evolutionary curiosity" with an enigmatic identity. Here we show that members of the genus Gloeobacter probably are common rock-dwelling cyanobacteria. On the basis of morphological, ultrastructural, pigment, and phylogenetic comparisons of available Gloeobacter strains, as well as on the basis of three new independent isolates and historical type specimen, we have produced strong evidence as to the close relationship of Gloeobacter to a long known rock-dwelling cyanobacterial morphospecies Aphanothece caldariorum. Our results bring new clues to solving the 40 year old puzzle of the true biological identity of Gloeobacter violaceus, a model organism with a high value in several biological disciplines. A probable broader distribution of Gloeobacter in common wet-rock habitats worldwide is suggested by our data, and its ecological meaning is discussed taking into consideration the background of cyanobacterial evolution. We provide observations of previously unknown genetic variability and phenotypic plasticity, which we expect to be utilized by experimental and evolutionary researchers worldwide.
format	article
author	Jan Mareš Pavel Hrouzek Radek Kaňa Stefano Ventura Otakar Strunecký Jiří Komárek
author_facet	Jan Mareš Pavel Hrouzek Radek Kaňa Stefano Ventura Otakar Strunecký Jiří Komárek
author_sort	Jan Mareš
title	The Primitive Thylakoid-Less Cyanobacterium Gloeobacter Is a Common Rock-Dwelling Organism.
title_short	The Primitive Thylakoid-Less Cyanobacterium Gloeobacter Is a Common Rock-Dwelling Organism.
title_full	The Primitive Thylakoid-Less Cyanobacterium Gloeobacter Is a Common Rock-Dwelling Organism.
title_fullStr	The Primitive Thylakoid-Less Cyanobacterium Gloeobacter Is a Common Rock-Dwelling Organism.
title_full_unstemmed	The Primitive Thylakoid-Less Cyanobacterium Gloeobacter Is a Common Rock-Dwelling Organism.
title_sort	primitive thylakoid-less cyanobacterium gloeobacter is a common rock-dwelling organism.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/153a07ff96154d569909884c2917a33c
work_keys_str_mv	AT janmares theprimitivethylakoidlesscyanobacteriumgloeobacterisacommonrockdwellingorganism AT pavelhrouzek theprimitivethylakoidlesscyanobacteriumgloeobacterisacommonrockdwellingorganism AT radekkana theprimitivethylakoidlesscyanobacteriumgloeobacterisacommonrockdwellingorganism AT stefanoventura theprimitivethylakoidlesscyanobacteriumgloeobacterisacommonrockdwellingorganism AT otakarstrunecky theprimitivethylakoidlesscyanobacteriumgloeobacterisacommonrockdwellingorganism AT jirikomarek theprimitivethylakoidlesscyanobacteriumgloeobacterisacommonrockdwellingorganism AT janmares primitivethylakoidlesscyanobacteriumgloeobacterisacommonrockdwellingorganism AT pavelhrouzek primitivethylakoidlesscyanobacteriumgloeobacterisacommonrockdwellingorganism AT radekkana primitivethylakoidlesscyanobacteriumgloeobacterisacommonrockdwellingorganism AT stefanoventura primitivethylakoidlesscyanobacteriumgloeobacterisacommonrockdwellingorganism AT otakarstrunecky primitivethylakoidlesscyanobacteriumgloeobacterisacommonrockdwellingorganism AT jirikomarek primitivethylakoidlesscyanobacteriumgloeobacterisacommonrockdwellingorganism
_version_	1718423080251949056

The Primitive Thylakoid-Less Cyanobacterium Gloeobacter Is a Common Rock-Dwelling Organism.

Ejemplares similares