Taxonomy and Biogeography of Apomixis in Angiosperms and Associated Biodiversity Characteristics
Apomixis in angiosperms is asexual reproduction from seed. Its importance to angiospermous evolution and biodiversity has been difficult to assess mainly because of insufficient taxonomic documentation. Thus, we assembled literature reporting apomixis occurrences among angiosperms and transferred th...
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ftsubgoettingen:oai:goescholar:1/11437 2023-05-15T15:12:23+02:00 Taxonomy and Biogeography of Apomixis in Angiosperms and Associated Biodiversity Characteristics Hojsgaard, Diego Klatt, Simone Baier, Roland Carman, John G. Hörandl, Elvira 2014 http://resolver.sub.uni-goettingen.de/purl?gs-1/11437 https://doi.org/10.1080/07352689.2014.898488 eng eng 1549-7836 0735-2689 http://resolver.sub.uni-goettingen.de/purl?gs-1/11437 doi:10.1080/07352689.2014.898488 604709 openAccess http://creativecommons.org/licenses/by/3.0/ CC-BY angiosperms biodiversity biogeography online database evolution polyploidy phylogeny geographical parthenogenesis journalArticle publishedVersion 2014 ftsubgoettingen https://doi.org/10.1080/07352689.2014.898488 2022-11-02T09:28:26Z Apomixis in angiosperms is asexual reproduction from seed. Its importance to angiospermous evolution and biodiversity has been difficult to assess mainly because of insufficient taxonomic documentation. Thus, we assembled literature reporting apomixis occurrences among angiosperms and transferred the information to an internet database (http://www.apomixis.uni-goettingen.de). We then searched for correlations between apomixis occurrences and well-established measures of taxonomic diversity and biogeography. Apomixis was found to be taxonomically widespread with no clear tendency to specific groups and to occur with sexuality at all taxonomic levels. Adventitious embryony was the most frequent form (148 genera) followed by apospory (110) and diplospory (68). All three forms are phylogenetically scattered, but this scattering is strongly associated with measures of biodiversity. Across apomictic-containing orders and families, numbers of apomict-containing genera were positively correlated with total numbers of genera. In general, apomict-containing orders, families, and subfamilies of Asteraceae, Poaceae, and Orchidaceae were larger, i.e., they possessed more families or genera, than non-apomict-containing orders, families or subfamilies. Furthermore, many apomict-containing genera were found to be highly cosmopolitan. In this respect, 62% occupy multiple geographic zones. Numbers of genera containing sporophytic or gametophytic apomicts decreased from the tropics to the arctic, a trend that parallels general biodiversity. While angiosperms appear to be predisposed to shift from sex to apomixis, there is also evidence of reversions to sexuality. Such reversions may result from genetic or epigenetic destabilization events accompanying hybridization, polyploidy, or other cytogenetic alterations. Because of increased within-plant genetic and genomic heterogeneity, range expansions and diversifications at the species and genus levels may occur more rapidly upon reversion to sexuality. The significantly-enriched ... Article in Journal/Newspaper Arctic Georg-August-Universität Göttingen: GoeScholar Arctic Critical Reviews in Plant Sciences 33 5 414 427 |
institution |
Open Polar |
collection |
Georg-August-Universität Göttingen: GoeScholar |
op_collection_id |
ftsubgoettingen |
language |
English |
topic |
angiosperms biodiversity biogeography online database evolution polyploidy phylogeny geographical parthenogenesis |
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angiosperms biodiversity biogeography online database evolution polyploidy phylogeny geographical parthenogenesis Hojsgaard, Diego Klatt, Simone Baier, Roland Carman, John G. Hörandl, Elvira Taxonomy and Biogeography of Apomixis in Angiosperms and Associated Biodiversity Characteristics |
topic_facet |
angiosperms biodiversity biogeography online database evolution polyploidy phylogeny geographical parthenogenesis |
description |
Apomixis in angiosperms is asexual reproduction from seed. Its importance to angiospermous evolution and biodiversity has been difficult to assess mainly because of insufficient taxonomic documentation. Thus, we assembled literature reporting apomixis occurrences among angiosperms and transferred the information to an internet database (http://www.apomixis.uni-goettingen.de). We then searched for correlations between apomixis occurrences and well-established measures of taxonomic diversity and biogeography. Apomixis was found to be taxonomically widespread with no clear tendency to specific groups and to occur with sexuality at all taxonomic levels. Adventitious embryony was the most frequent form (148 genera) followed by apospory (110) and diplospory (68). All three forms are phylogenetically scattered, but this scattering is strongly associated with measures of biodiversity. Across apomictic-containing orders and families, numbers of apomict-containing genera were positively correlated with total numbers of genera. In general, apomict-containing orders, families, and subfamilies of Asteraceae, Poaceae, and Orchidaceae were larger, i.e., they possessed more families or genera, than non-apomict-containing orders, families or subfamilies. Furthermore, many apomict-containing genera were found to be highly cosmopolitan. In this respect, 62% occupy multiple geographic zones. Numbers of genera containing sporophytic or gametophytic apomicts decreased from the tropics to the arctic, a trend that parallels general biodiversity. While angiosperms appear to be predisposed to shift from sex to apomixis, there is also evidence of reversions to sexuality. Such reversions may result from genetic or epigenetic destabilization events accompanying hybridization, polyploidy, or other cytogenetic alterations. Because of increased within-plant genetic and genomic heterogeneity, range expansions and diversifications at the species and genus levels may occur more rapidly upon reversion to sexuality. The significantly-enriched ... |
format |
Article in Journal/Newspaper |
author |
Hojsgaard, Diego Klatt, Simone Baier, Roland Carman, John G. Hörandl, Elvira |
author_facet |
Hojsgaard, Diego Klatt, Simone Baier, Roland Carman, John G. Hörandl, Elvira |
author_sort |
Hojsgaard, Diego |
title |
Taxonomy and Biogeography of Apomixis in Angiosperms and Associated Biodiversity Characteristics |
title_short |
Taxonomy and Biogeography of Apomixis in Angiosperms and Associated Biodiversity Characteristics |
title_full |
Taxonomy and Biogeography of Apomixis in Angiosperms and Associated Biodiversity Characteristics |
title_fullStr |
Taxonomy and Biogeography of Apomixis in Angiosperms and Associated Biodiversity Characteristics |
title_full_unstemmed |
Taxonomy and Biogeography of Apomixis in Angiosperms and Associated Biodiversity Characteristics |
title_sort |
taxonomy and biogeography of apomixis in angiosperms and associated biodiversity characteristics |
publishDate |
2014 |
url |
http://resolver.sub.uni-goettingen.de/purl?gs-1/11437 https://doi.org/10.1080/07352689.2014.898488 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
1549-7836 0735-2689 http://resolver.sub.uni-goettingen.de/purl?gs-1/11437 doi:10.1080/07352689.2014.898488 604709 |
op_rights |
openAccess http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1080/07352689.2014.898488 |
container_title |
Critical Reviews in Plant Sciences |
container_volume |
33 |
container_issue |
5 |
container_start_page |
414 |
op_container_end_page |
427 |
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1766343076055351296 |