Does the mode of plastid inheritance influence plastid genome architecture?

Plastid genomes show an impressive array of sizes and compactnesses, but the forces responsible for this variation are unknown. It has been argued that species with small effective genetic population sizes are less efficient at purging excess DNA from their genomes than those with large effective po...

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Autores principales:	Kate Crosby, David Roy Smith
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/171669d8264e4fad925db75c30d9b165
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spelling	oai:doaj.org-article:171669d8264e4fad925db75c30d9b1652021-11-18T08:13:47ZDoes the mode of plastid inheritance influence plastid genome architecture?1932-620310.1371/journal.pone.0046260https://doaj.org/article/171669d8264e4fad925db75c30d9b1652012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23029453/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Plastid genomes show an impressive array of sizes and compactnesses, but the forces responsible for this variation are unknown. It has been argued that species with small effective genetic population sizes are less efficient at purging excess DNA from their genomes than those with large effective population sizes. If true, one may expect the primary mode of plastid inheritance to influence plastid DNA (ptDNA) architecture. All else being equal, biparentally inherited ptDNAs should have a two-fold greater effective population size than those that are uniparentally inherited, and thus should also be more compact. Here, we explore the relationship between plastid inheritance pattern and ptDNA architecture, and consider the role of phylogeny in shaping our observations. Contrary to our expectations, we found no significant difference in plastid genome size or compactness between ptDNAs that are biparentally inherited relative to those that are uniparentally inherited. However, we also found that there was significant phylogenetic signal for the trait of mode of plastid inheritance. We also found that paternally inherited ptDNAs are significantly smaller (n = 19, p = 0.000001) than those that are maternally, uniparentally (when isogamous), or biparentally inherited. Potential explanations for this observation are discussed.Kate CrosbyDavid Roy SmithPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 9, p e46260 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kate Crosby David Roy Smith Does the mode of plastid inheritance influence plastid genome architecture?
description	Plastid genomes show an impressive array of sizes and compactnesses, but the forces responsible for this variation are unknown. It has been argued that species with small effective genetic population sizes are less efficient at purging excess DNA from their genomes than those with large effective population sizes. If true, one may expect the primary mode of plastid inheritance to influence plastid DNA (ptDNA) architecture. All else being equal, biparentally inherited ptDNAs should have a two-fold greater effective population size than those that are uniparentally inherited, and thus should also be more compact. Here, we explore the relationship between plastid inheritance pattern and ptDNA architecture, and consider the role of phylogeny in shaping our observations. Contrary to our expectations, we found no significant difference in plastid genome size or compactness between ptDNAs that are biparentally inherited relative to those that are uniparentally inherited. However, we also found that there was significant phylogenetic signal for the trait of mode of plastid inheritance. We also found that paternally inherited ptDNAs are significantly smaller (n = 19, p = 0.000001) than those that are maternally, uniparentally (when isogamous), or biparentally inherited. Potential explanations for this observation are discussed.
format	article
author	Kate Crosby David Roy Smith
author_facet	Kate Crosby David Roy Smith
author_sort	Kate Crosby
title	Does the mode of plastid inheritance influence plastid genome architecture?
title_short	Does the mode of plastid inheritance influence plastid genome architecture?
title_full	Does the mode of plastid inheritance influence plastid genome architecture?
title_fullStr	Does the mode of plastid inheritance influence plastid genome architecture?
title_full_unstemmed	Does the mode of plastid inheritance influence plastid genome architecture?
title_sort	does the mode of plastid inheritance influence plastid genome architecture?
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/171669d8264e4fad925db75c30d9b165
work_keys_str_mv	AT katecrosby doesthemodeofplastidinheritanceinfluenceplastidgenomearchitecture AT davidroysmith doesthemodeofplastidinheritanceinfluenceplastidgenomearchitecture
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Does the mode of plastid inheritance influence plastid genome architecture?

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