Polyploidy and sexual system in angiosperms: Is there an association?
PRMISE OF THE STUDY: Flowering plants display a variety of sexual systems, ranging from complete cosexuality (hermaphroditism) to separate-sexed individuals (dioecy). While dioecy is relatively rare, it has evolved many times and is present in many plant families. Transitions in sexual systems are h...
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Veröffentlicht in: | American journal of botany 2016-07, Vol.103 (7), p.1223-1235 |
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description | PRMISE OF THE STUDY: Flowering plants display a variety of sexual systems, ranging from complete cosexuality (hermaphroditism) to separate-sexed individuals (dioecy). While dioecy is relatively rare, it has evolved many times and is present in many plant families. Transitions in sexual systems are hypothesized to be affected by large genomic events such as whole-genome duplication, or polyploidy, and several models have been proposed to explain the observed patterns of association. METHODS: In this study, we assessed the association between ploidy and sexual system (separate or combined sexes). To this end, we assembled a database of ploidy levels and sexual systems for ~1000 species, spanning 18 genera and 15 families. We applied several phylogenetic comparative approaches, including Pagel's coevolutionary framework and sister clade analyses, for detecting correlations between ploidy level and sexual system. KEY RESULTS: Our results indicate a broad association between polyploidy and sexual system dimorphism, with low evolutionary stability of the diploiddioecious condition observed in several clades. A detailed examination of the clades exhibiting this correlation reveals that it is underlain by various patterns of transition rate asymmetry. CONCLUSIONS: We conclude that the long-hypothesized connection between ploidy and sexual system holds in some clades, although it may well be affected by factors that differ from clade to clade. Our results further demonstrate that to better understand the evolutionary processes involved, more sophisticated methods and extensive and detailed data sets are required for both broad and focused inquiry. |
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While dioecy is relatively rare, it has evolved many times and is present in many plant families. Transitions in sexual systems are hypothesized to be affected by large genomic events such as whole-genome duplication, or polyploidy, and several models have been proposed to explain the observed patterns of association. METHODS: In this study, we assessed the association between ploidy and sexual system (separate or combined sexes). To this end, we assembled a database of ploidy levels and sexual systems for ~1000 species, spanning 18 genera and 15 families. We applied several phylogenetic comparative approaches, including Pagel's coevolutionary framework and sister clade analyses, for detecting correlations between ploidy level and sexual system. KEY RESULTS: Our results indicate a broad association between polyploidy and sexual system dimorphism, with low evolutionary stability of the diploiddioecious condition observed in several clades. A detailed examination of the clades exhibiting this correlation reveals that it is underlain by various patterns of transition rate asymmetry. CONCLUSIONS: We conclude that the long-hypothesized connection between ploidy and sexual system holds in some clades, although it may well be affected by factors that differ from clade to clade. Our results further demonstrate that to better understand the evolutionary processes involved, more sophisticated methods and extensive and detailed data sets are required for both broad and focused inquiry.</description><identifier>ISSN: 0002-9122</identifier><identifier>EISSN: 1537-2197</identifier><identifier>DOI: 10.3732/ajb.1500424</identifier><identifier>PMID: 27352832</identifier><identifier>CODEN: AJBOAA</identifier><language>eng</language><publisher>United States: Botanical Society of America, Inc</publisher><subject>Biological Evolution ; Botany ; correlated evolution ; Correlation analysis ; dioecy ; Diploidy ; EVOLUTIONARY CONSEQUENCES OF POLYPLOIDY ; Flowers & plants ; Genome, Plant - genetics ; hermaphroditism ; Magnoliopsida - genetics ; Models, Genetic ; Phylogeny ; Plant reproduction ; Polyploidy ; Reproduction - genetics ; sexual dimorphism ; sexual system ; whole‐genome duplication</subject><ispartof>American journal of botany, 2016-07, Vol.103 (7), p.1223-1235</ispartof><rights>Copyright 2016 Botanical Society of America, Inc.</rights><rights>2016 Botanical Society of America</rights><rights>2016 Botanical Society of America.</rights><rights>Copyright Botanical Society of America, Inc. Jul 2016</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5213-17e1f9cc1b00ed6c2dc2c9c108cea195834bd44a904b1f9b056fb3518972a73c3</citedby><cites>FETCH-LOGICAL-c5213-17e1f9cc1b00ed6c2dc2c9c108cea195834bd44a904b1f9b056fb3518972a73c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/44252773$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/44252773$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,803,1417,1433,27924,27925,45574,45575,46409,46833,58017,58250</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/27352832$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Glick, Lior</creatorcontrib><creatorcontrib>Sabath, Niv</creatorcontrib><creatorcontrib>Ashman, Tia-Lynn</creatorcontrib><creatorcontrib>Goldberg, Emma</creatorcontrib><creatorcontrib>Mayrose, Itay</creatorcontrib><title>Polyploidy and sexual system in angiosperms: Is there an association?</title><title>American journal of botany</title><addtitle>Am J Bot</addtitle><description>PRMISE OF THE STUDY: Flowering plants display a variety of sexual systems, ranging from complete cosexuality (hermaphroditism) to separate-sexed individuals (dioecy). While dioecy is relatively rare, it has evolved many times and is present in many plant families. Transitions in sexual systems are hypothesized to be affected by large genomic events such as whole-genome duplication, or polyploidy, and several models have been proposed to explain the observed patterns of association. METHODS: In this study, we assessed the association between ploidy and sexual system (separate or combined sexes). To this end, we assembled a database of ploidy levels and sexual systems for ~1000 species, spanning 18 genera and 15 families. We applied several phylogenetic comparative approaches, including Pagel's coevolutionary framework and sister clade analyses, for detecting correlations between ploidy level and sexual system. KEY RESULTS: Our results indicate a broad association between polyploidy and sexual system dimorphism, with low evolutionary stability of the diploiddioecious condition observed in several clades. A detailed examination of the clades exhibiting this correlation reveals that it is underlain by various patterns of transition rate asymmetry. CONCLUSIONS: We conclude that the long-hypothesized connection between ploidy and sexual system holds in some clades, although it may well be affected by factors that differ from clade to clade. Our results further demonstrate that to better understand the evolutionary processes involved, more sophisticated methods and extensive and detailed data sets are required for both broad and focused inquiry.</description><subject>Biological Evolution</subject><subject>Botany</subject><subject>correlated evolution</subject><subject>Correlation analysis</subject><subject>dioecy</subject><subject>Diploidy</subject><subject>EVOLUTIONARY CONSEQUENCES OF POLYPLOIDY</subject><subject>Flowers & plants</subject><subject>Genome, Plant - genetics</subject><subject>hermaphroditism</subject><subject>Magnoliopsida - genetics</subject><subject>Models, Genetic</subject><subject>Phylogeny</subject><subject>Plant reproduction</subject><subject>Polyploidy</subject><subject>Reproduction - genetics</subject><subject>sexual dimorphism</subject><subject>sexual system</subject><subject>whole‐genome duplication</subject><issn>0002-9122</issn><issn>1537-2197</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkUGP1DAMhSMEYoeBE2dQJS5IqIvtJJOGC1pWCyxaCQ5wrtI0Ax21zWzcCvrvyWiGPXBAnCxb33uy_YR4inAujaTXbtecowZQpO6JFWppSkJr7osVAFBpkehMPGLe5dYqSw_FGRmpqZK0EldfYr_s-9i1S-HGtuDwa3Z9wQtPYSi6MQ-_d5H3IQ38prjmYvoRUsjTwjFH37mpi-Pbx-LB1vUcnpzqWnx7f_X18mN58_nD9eXFTek1oSzRBNxa77EBCO3GU-vJW49Q-eDQ6kqqplXKWVBNBhvQm20jNVbWkDPSy7V4efTdp3g7B57qoWMf-t6NIc5cY4XaIEhJ_4GC3YCBTK_Fi7_QXZzTmA85GKIhY-BAvTpSPkXmFLb1PnWDS0uNUB-CqHMQ9SmITD8_ec7NENo79s_nM4BH4GfXh-VfXvXFp3eUQ5RZ8-yo2fEU051GKdJ5Ryl_A8NmmaY</recordid><startdate>20160701</startdate><enddate>20160701</enddate><creator>Glick, Lior</creator><creator>Sabath, Niv</creator><creator>Ashman, Tia-Lynn</creator><creator>Goldberg, Emma</creator><creator>Mayrose, Itay</creator><general>Botanical Society of America, Inc</general><general>Botanical Society of America</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QL</scope><scope>7SN</scope><scope>7SS</scope><scope>7ST</scope><scope>7U9</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>H94</scope><scope>M7N</scope><scope>P64</scope><scope>RC3</scope><scope>SOI</scope><scope>7X8</scope></search><sort><creationdate>20160701</creationdate><title>Polyploidy and sexual system in angiosperms: Is there an association?</title><author>Glick, Lior ; 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A detailed examination of the clades exhibiting this correlation reveals that it is underlain by various patterns of transition rate asymmetry. CONCLUSIONS: We conclude that the long-hypothesized connection between ploidy and sexual system holds in some clades, although it may well be affected by factors that differ from clade to clade. Our results further demonstrate that to better understand the evolutionary processes involved, more sophisticated methods and extensive and detailed data sets are required for both broad and focused inquiry.</abstract><cop>United States</cop><pub>Botanical Society of America, Inc</pub><pmid>27352832</pmid><doi>10.3732/ajb.1500424</doi><tpages>13</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Biological Evolution Botany correlated evolution Correlation analysis dioecy Diploidy EVOLUTIONARY CONSEQUENCES OF POLYPLOIDY Flowers & plants Genome, Plant - genetics hermaphroditism Magnoliopsida - genetics Models, Genetic Phylogeny Plant reproduction Polyploidy Reproduction - genetics sexual dimorphism sexual system whole‐genome duplication |
title | Polyploidy and sexual system in angiosperms: Is there an association? |
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