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Genetic structure of Helianthus occidentalis (Asteraceae) in a preserve with fragmented habitat
We examined the spatial genetic structure of Helianthus occidentalis Riddell ssp. occidentalis Riddell (western sunflower) to determine whether this species is highly clonal and whether the distance between prairie patches influences genetic differentiation. In the Edge of Appalachia Preserve System...
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Published in: | American journal of botany 1999-07, Vol.86 (7), p.988-995 |
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creator | Fore, S.A Guttman, S.I |
description | We examined the spatial genetic structure of Helianthus occidentalis Riddell ssp. occidentalis Riddell (western sunflower) to determine whether this species is highly clonal and whether the distance between prairie patches influences genetic differentiation. In the Edge of Appalachia Preserve System, Ohio, this species is restricted to prairie patches that have a clumped distribution in the forest matrix. Data from this insect-pollinated forb with gravity-dispersed seed were compared to data from the same patches for Asclepias verticillata, an insect-pollinated species with wind-dispersed seed. Allozyme electrophoresis was used to collect genetic data from H. occidentalis samples from eight patches in four regions. Genetic data from three polymorphic loci indicted that this species is not highly clonal. Genetic differentiation was greater among patches within a region than among regions, suggesting that gene flow among patches is more limited in H. occidentalis than in A. verticillata. Founder effect may also have contributed to observed genetic differences among patches as some of these populations may have re-established after release from human use. As habitat fragmentation is increasing in the preserve, it is also likely that genetic differentiation may be increasing. Therefore, monitoring of genetic structure is necessary to further assess the effect of fragmentation. |
doi_str_mv | 10.2307/2656616 |
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In the Edge of Appalachia Preserve System, Ohio, this species is restricted to prairie patches that have a clumped distribution in the forest matrix. Data from this insect-pollinated forb with gravity-dispersed seed were compared to data from the same patches for Asclepias verticillata, an insect-pollinated species with wind-dispersed seed. Allozyme electrophoresis was used to collect genetic data from H. occidentalis samples from eight patches in four regions. Genetic data from three polymorphic loci indicted that this species is not highly clonal. Genetic differentiation was greater among patches within a region than among regions, suggesting that gene flow among patches is more limited in H. occidentalis than in A. verticillata. Founder effect may also have contributed to observed genetic differences among patches as some of these populations may have re-established after release from human use. As habitat fragmentation is increasing in the preserve, it is also likely that genetic differentiation may be increasing. Therefore, monitoring of genetic structure is necessary to further assess the effect of fragmentation.</description><identifier>ISSN: 0002-9122</identifier><identifier>EISSN: 1537-2197</identifier><identifier>DOI: 10.2307/2656616</identifier><identifier>CODEN: AJBOAA</identifier><language>eng</language><publisher>Columbus: Botanical Society of America</publisher><subject>Alleles ; allozymes ; Asclepias verticillata ; Botany ; clones ; conservation areas ; Flowers & plants ; fragmentation ; gene flow ; Genetic diversity ; Genetic loci ; genetic polymorphism ; Genetic structures ; Genetic variation ; Genetics ; Genotypes ; Geographic regions ; Habitats ; Helianthus ; Helianthus occidentalis ; loci ; Plants ; pollinators ; Population Biology ; Population genetics ; Prairies ; seed dispersal ; spatial variation ; USA, Ohio</subject><ispartof>American journal of botany, 1999-07, Vol.86 (7), p.988-995</ispartof><rights>Copyright 1999 Botanical Society of America, Inc.</rights><rights>Copyright Botanical Society of America, Inc. 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In the Edge of Appalachia Preserve System, Ohio, this species is restricted to prairie patches that have a clumped distribution in the forest matrix. Data from this insect-pollinated forb with gravity-dispersed seed were compared to data from the same patches for Asclepias verticillata, an insect-pollinated species with wind-dispersed seed. Allozyme electrophoresis was used to collect genetic data from H. occidentalis samples from eight patches in four regions. Genetic data from three polymorphic loci indicted that this species is not highly clonal. Genetic differentiation was greater among patches within a region than among regions, suggesting that gene flow among patches is more limited in H. occidentalis than in A. verticillata. Founder effect may also have contributed to observed genetic differences among patches as some of these populations may have re-established after release from human use. As habitat fragmentation is increasing in the preserve, it is also likely that genetic differentiation may be increasing. Therefore, monitoring of genetic structure is necessary to further assess the effect of fragmentation.</description><subject>Alleles</subject><subject>allozymes</subject><subject>Asclepias verticillata</subject><subject>Botany</subject><subject>clones</subject><subject>conservation areas</subject><subject>Flowers & plants</subject><subject>fragmentation</subject><subject>gene flow</subject><subject>Genetic diversity</subject><subject>Genetic loci</subject><subject>genetic polymorphism</subject><subject>Genetic structures</subject><subject>Genetic variation</subject><subject>Genetics</subject><subject>Genotypes</subject><subject>Geographic regions</subject><subject>Habitats</subject><subject>Helianthus</subject><subject>Helianthus occidentalis</subject><subject>loci</subject><subject>Plants</subject><subject>pollinators</subject><subject>Population Biology</subject><subject>Population genetics</subject><subject>Prairies</subject><subject>seed dispersal</subject><subject>spatial variation</subject><subject>USA, Ohio</subject><issn>0002-9122</issn><issn>1537-2197</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1999</creationdate><recordtype>article</recordtype><recordid>eNpd0FFLwzAQB_AgCs4pfgHB4IPoQzW5pE3zOESnIPigPpdrdt0yunYmqeK3t7A9eS_H8f9xHMfYuRR3oIS5hyIvClkcsInMlclAWnPIJkIIyKwEOGYnMa7H0WoLE1bNqaPkHY8pDC4NgXjf8GdqPXZpNUTeO-cX1CVsfeQ3s5gooCOkW-47jnwbKFL4Jv7j04o3AZebEdOCr7D2CdMpO2qwjXS271P2-fT48fCcvb7NXx5mr1kDZZ4yBLAWCzTW5SWRwlo3TimHoLTVBrWuy4XRTa2ENbnTsMi1FE4oWTunZamm7Hq3dxv6r4FiqjY-Ompb7KgfYiWNLscyI7z6B9f9ELrxtgpkXhoDUIzoYofWMfWh2ga_wfBb7V87xpe7uMG-wmXwsfp8ByGVAKuUhVL9AcuIdCU</recordid><startdate>19990701</startdate><enddate>19990701</enddate><creator>Fore, S.A</creator><creator>Guttman, S.I</creator><general>Botanical Society of America</general><general>Botanical Society of America, Inc</general><scope>FBQ</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></search><sort><creationdate>19990701</creationdate><title>Genetic structure of Helianthus occidentalis (Asteraceae) in a preserve with fragmented habitat</title><author>Fore, S.A ; Guttman, S.I</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-f285t-a2299a6a79c58ee3ab4fc33ca234947a44b8d74fb30975c42d5410c031bcc4183</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1999</creationdate><topic>Alleles</topic><topic>allozymes</topic><topic>Asclepias verticillata</topic><topic>Botany</topic><topic>clones</topic><topic>conservation areas</topic><topic>Flowers & plants</topic><topic>fragmentation</topic><topic>gene flow</topic><topic>Genetic diversity</topic><topic>Genetic loci</topic><topic>genetic polymorphism</topic><topic>Genetic structures</topic><topic>Genetic variation</topic><topic>Genetics</topic><topic>Genotypes</topic><topic>Geographic regions</topic><topic>Habitats</topic><topic>Helianthus</topic><topic>Helianthus occidentalis</topic><topic>loci</topic><topic>Plants</topic><topic>pollinators</topic><topic>Population Biology</topic><topic>Population genetics</topic><topic>Prairies</topic><topic>seed dispersal</topic><topic>spatial variation</topic><topic>USA, Ohio</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fore, S.A</creatorcontrib><creatorcontrib>Guttman, S.I</creatorcontrib><collection>AGRIS</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Environment Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><collection>Environment Abstracts</collection><jtitle>American journal of botany</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fore, S.A</au><au>Guttman, S.I</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Genetic structure of Helianthus occidentalis (Asteraceae) in a preserve with fragmented habitat</atitle><jtitle>American journal of botany</jtitle><date>1999-07-01</date><risdate>1999</risdate><volume>86</volume><issue>7</issue><spage>988</spage><epage>995</epage><pages>988-995</pages><issn>0002-9122</issn><eissn>1537-2197</eissn><coden>AJBOAA</coden><abstract>We examined the spatial genetic structure of Helianthus occidentalis Riddell ssp. occidentalis Riddell (western sunflower) to determine whether this species is highly clonal and whether the distance between prairie patches influences genetic differentiation. In the Edge of Appalachia Preserve System, Ohio, this species is restricted to prairie patches that have a clumped distribution in the forest matrix. Data from this insect-pollinated forb with gravity-dispersed seed were compared to data from the same patches for Asclepias verticillata, an insect-pollinated species with wind-dispersed seed. Allozyme electrophoresis was used to collect genetic data from H. occidentalis samples from eight patches in four regions. Genetic data from three polymorphic loci indicted that this species is not highly clonal. Genetic differentiation was greater among patches within a region than among regions, suggesting that gene flow among patches is more limited in H. occidentalis than in A. verticillata. Founder effect may also have contributed to observed genetic differences among patches as some of these populations may have re-established after release from human use. As habitat fragmentation is increasing in the preserve, it is also likely that genetic differentiation may be increasing. Therefore, monitoring of genetic structure is necessary to further assess the effect of fragmentation.</abstract><cop>Columbus</cop><pub>Botanical Society of America</pub><doi>10.2307/2656616</doi><tpages>8</tpages></addata></record> |
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source | JSTOR Archival Journals and Primary Sources Collection; Wiley-Blackwell Read & Publish Collection; Botanical Society of America |
subjects | Alleles allozymes Asclepias verticillata Botany clones conservation areas Flowers & plants fragmentation gene flow Genetic diversity Genetic loci genetic polymorphism Genetic structures Genetic variation Genetics Genotypes Geographic regions Habitats Helianthus Helianthus occidentalis loci Plants pollinators Population Biology Population genetics Prairies seed dispersal spatial variation USA, Ohio |
title | Genetic structure of Helianthus occidentalis (Asteraceae) in a preserve with fragmented habitat |
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