Tetrahymena meiosis: Simple yet ingenious.

The presence of meiosis, which is a conserved component of sexual reproduction, across organisms from all eukaryotic kingdoms, strongly argues that sex is a primordial feature of eukaryotes. However, extant meiotic structures and processes can vary considerably between organisms. The ciliated protis...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autor principal:	Josef Loidl
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Genetics QH426-470
Acceso en línea:	https://doaj.org/article/c335d7b140e64ada9d441c95f752e09b
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:c335d7b140e64ada9d441c95f752e09b
record_format	dspace
spelling	oai:doaj.org-article:c335d7b140e64ada9d441c95f752e09b2021-12-02T20:02:45ZTetrahymena meiosis: Simple yet ingenious.1553-73901553-740410.1371/journal.pgen.1009627https://doaj.org/article/c335d7b140e64ada9d441c95f752e09b2021-07-01T00:00:00Zhttps://doi.org/10.1371/journal.pgen.1009627https://doaj.org/toc/1553-7390https://doaj.org/toc/1553-7404The presence of meiosis, which is a conserved component of sexual reproduction, across organisms from all eukaryotic kingdoms, strongly argues that sex is a primordial feature of eukaryotes. However, extant meiotic structures and processes can vary considerably between organisms. The ciliated protist Tetrahymena thermophila, which diverged from animals, plants, and fungi early in evolution, provides one example of a rather unconventional meiosis. Tetrahymena has a simpler meiosis compared with most other organisms: It lacks both a synaptonemal complex (SC) and specialized meiotic machinery for chromosome cohesion and has a reduced capacity to regulate meiotic recombination. Despite this, it also features several unique mechanisms, including elongation of the nucleus to twice the cell length to promote homologous pairing and prevent recombination between sister chromatids. Comparison of the meiotic programs of Tetrahymena and higher multicellular organisms may reveal how extant meiosis evolved from proto-meiosis.Josef LoidlPublic Library of Science (PLoS)articleGeneticsQH426-470ENPLoS Genetics, Vol 17, Iss 7, p e1009627 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Genetics QH426-470
spellingShingle	Genetics QH426-470 Josef Loidl Tetrahymena meiosis: Simple yet ingenious.
description	The presence of meiosis, which is a conserved component of sexual reproduction, across organisms from all eukaryotic kingdoms, strongly argues that sex is a primordial feature of eukaryotes. However, extant meiotic structures and processes can vary considerably between organisms. The ciliated protist Tetrahymena thermophila, which diverged from animals, plants, and fungi early in evolution, provides one example of a rather unconventional meiosis. Tetrahymena has a simpler meiosis compared with most other organisms: It lacks both a synaptonemal complex (SC) and specialized meiotic machinery for chromosome cohesion and has a reduced capacity to regulate meiotic recombination. Despite this, it also features several unique mechanisms, including elongation of the nucleus to twice the cell length to promote homologous pairing and prevent recombination between sister chromatids. Comparison of the meiotic programs of Tetrahymena and higher multicellular organisms may reveal how extant meiosis evolved from proto-meiosis.
format	article
author	Josef Loidl
author_facet	Josef Loidl
author_sort	Josef Loidl
title	Tetrahymena meiosis: Simple yet ingenious.
title_short	Tetrahymena meiosis: Simple yet ingenious.
title_full	Tetrahymena meiosis: Simple yet ingenious.
title_fullStr	Tetrahymena meiosis: Simple yet ingenious.
title_full_unstemmed	Tetrahymena meiosis: Simple yet ingenious.
title_sort	tetrahymena meiosis: simple yet ingenious.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/c335d7b140e64ada9d441c95f752e09b
work_keys_str_mv	AT josefloidl tetrahymenameiosissimpleyetingenious
_version_	1718375685132648448

Tetrahymena meiosis: Simple yet ingenious.

Ejemplares similares