The clonal root system of balsam poplar in upland sites of Quebec and Alberta.
Identifieur interne : 001633 ( Main/Exploration ); précédent : 001632; suivant : 001634The clonal root system of balsam poplar in upland sites of Quebec and Alberta.
Auteurs : Kokouvi E. Adonsou ; Annie Desrochers ; Francine Tremblay ; Barb R. Thomas ; Nathalie IsabelSource :
- Ecology and evolution [ 2045-7758 ] ; 2016.
Abstract
Balsam poplar seeds are short-lived and require moist seedbeds soon after they are released to germinate. In addition to sexual reproduction, balsam poplar stands can regenerate clonally by root suckering. The origin of stands will in turn affect their genetic structure and root system architecture, which are poorly understood for upland forest stands. Three stands were hydraulically excavated in Quebec (moist) and Alberta (dry) to determine the origin of trees and to characterize root systems with respect to presence of parental roots and root grafts connections. Clones were identified using single-nucleotide polymorphism (SNPs), and all stems, roots and root grafts were aged using dendrochronology techniques. All 82 excavated trees were of sucker origin, and four of the six stands contained a single clone. Parental root connections were found between 22% and 25% of excavated trees, and 53% and 48% of trees were linked with a root graft between the same or different clones, in Alberta and Quebec, respectively. Mean distance between trees connected by parental root was significantly lower than the distance between unconnected trees (0.47 ± 0.25 m vs. 3.14 ± 0.15 m and 1.55 ± 0.27 m vs. 4.25 ± 0.13 m) in Alberta and in Quebec, respectively. The excavations also revealed many dead stumps with live roots, maintained through root connections with live trees. This research highlights that balsam poplar growing in upland stands is a clonal species that can maintain relatively high genotypic diversity, with frequent root connections between trees at maturity. Maintaining an extensive root system through root connections increases the chances of a clone surviving when the above ground tree is dead and may also enhance the resilience of balsam poplar stands after disturbance.
DOI: 10.1002/ece3.2441
PubMed: 28725365
PubMed Central: PMC5513237
Affiliations:
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Adonsou</name><affiliation><nlm:affiliation>Institut de recherche sur les forêts Université du Québec en Abitibi-Témiscamingue Amos QC Canada.</nlm:affiliation><wicri:noCountry code="no comma">Institut de recherche sur les forêts Université du Québec en Abitibi-Témiscamingue Amos QC Canada.</wicri:noCountry></affiliation></author><author><name sortKey="Desrochers, Annie" sort="Desrochers, Annie" uniqKey="Desrochers A" first="Annie" last="Desrochers">Annie Desrochers</name><affiliation><nlm:affiliation>Institut de recherche sur les forêts Université du Québec en Abitibi-Témiscamingue Amos QC Canada.</nlm:affiliation><wicri:noCountry code="no comma">Institut de recherche sur les forêts Université du Québec en Abitibi-Témiscamingue Amos QC Canada.</wicri:noCountry></affiliation></author><author><name sortKey="Tremblay, Francine" sort="Tremblay, Francine" uniqKey="Tremblay F" first="Francine" last="Tremblay">Francine Tremblay</name><affiliation><nlm:affiliation>Institut de recherche sur les forêts Université du Québec en Abitibi-Témiscamingue Rouyn-Noranda QC Canada.</nlm:affiliation><wicri:noCountry code="no comma">Institut de recherche sur les forêts Université du Québec en Abitibi-Témiscamingue Rouyn-Noranda QC Canada.</wicri:noCountry></affiliation></author><author><name sortKey="Thomas, Barb R" sort="Thomas, Barb R" uniqKey="Thomas B" first="Barb R" last="Thomas">Barb R. 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Thomas</name><affiliation><nlm:affiliation>Department of Renewable Resources University of Alberta Edmonton AB Canada.</nlm:affiliation><wicri:noCountry code="no comma">Department of Renewable Resources University of Alberta Edmonton AB Canada.</wicri:noCountry></affiliation></author><author><name sortKey="Isabel, Nathalie" sort="Isabel, Nathalie" uniqKey="Isabel N" first="Nathalie" last="Isabel">Nathalie Isabel</name><affiliation><nlm:affiliation>Natural Resources Canada Canadian Forest Service Laurentian Forestry Centre Québec QC Canada.</nlm:affiliation><wicri:noCountry code="no comma">Natural Resources Canada Canadian Forest Service Laurentian Forestry Centre Québec QC Canada.</wicri:noCountry></affiliation></author></analytic><series><title level="j">Ecology and evolution</title><idno type="ISSN">2045-7758</idno><imprint><date when="2016" type="published">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Balsam poplar seeds are short-lived and require moist seedbeds soon after they are released to germinate. In addition to sexual reproduction, balsam poplar stands can regenerate clonally by root suckering. The origin of stands will in turn affect their genetic structure and root system architecture, which are poorly understood for upland forest stands. Three stands were hydraulically excavated in Quebec (moist) and Alberta (dry) to determine the origin of trees and to characterize root systems with respect to presence of parental roots and root grafts connections. Clones were identified using single-nucleotide polymorphism (SNPs), and all stems, roots and root grafts were aged using dendrochronology techniques. All 82 excavated trees were of sucker origin, and four of the six stands contained a single clone. Parental root connections were found between 22% and 25% of excavated trees, and 53% and 48% of trees were linked with a root graft between the same or different clones, in Alberta and Quebec, respectively. Mean distance between trees connected by parental root was significantly lower than the distance between unconnected trees (0.47 ± 0.25 m vs. 3.14 ± 0.15 m and 1.55 ± 0.27 m vs. 4.25 ± 0.13 m) in Alberta and in Quebec, respectively. The excavations also revealed many dead stumps with live roots, maintained through root connections with live trees. This research highlights that balsam poplar growing in upland stands is a clonal species that can maintain relatively high genotypic diversity, with frequent root connections between trees at maturity. Maintaining an extensive root system through root connections increases the chances of a clone surviving when the above ground tree is dead and may also enhance the resilience of balsam poplar stands after disturbance.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">28725365</PMID><DateRevised><Year>2020</Year><Month>10</Month><Day>01</Day></DateRevised><Article PubModel="Electronic-eCollection"><Journal><ISSN IssnType="Print">2045-7758</ISSN><JournalIssue CitedMedium="Print"><Volume>6</Volume><Issue>19</Issue><PubDate><Year>2016</Year><Month>10</Month></PubDate></JournalIssue><Title>Ecology and evolution</Title><ISOAbbreviation>Ecol Evol</ISOAbbreviation></Journal><ArticleTitle>The clonal root system of balsam poplar in upland sites of Quebec and Alberta.</ArticleTitle><Pagination><MedlinePgn>6846-6854</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1002/ece3.2441</ELocationID><Abstract><AbstractText>Balsam poplar seeds are short-lived and require moist seedbeds soon after they are released to germinate. In addition to sexual reproduction, balsam poplar stands can regenerate clonally by root suckering. The origin of stands will in turn affect their genetic structure and root system architecture, which are poorly understood for upland forest stands. Three stands were hydraulically excavated in Quebec (moist) and Alberta (dry) to determine the origin of trees and to characterize root systems with respect to presence of parental roots and root grafts connections. Clones were identified using single-nucleotide polymorphism (SNPs), and all stems, roots and root grafts were aged using dendrochronology techniques. All 82 excavated trees were of sucker origin, and four of the six stands contained a single clone. Parental root connections were found between 22% and 25% of excavated trees, and 53% and 48% of trees were linked with a root graft between the same or different clones, in Alberta and Quebec, respectively. Mean distance between trees connected by parental root was significantly lower than the distance between unconnected trees (0.47 ± 0.25 m vs. 3.14 ± 0.15 m and 1.55 ± 0.27 m vs. 4.25 ± 0.13 m) in Alberta and in Quebec, respectively. The excavations also revealed many dead stumps with live roots, maintained through root connections with live trees. This research highlights that balsam poplar growing in upland stands is a clonal species that can maintain relatively high genotypic diversity, with frequent root connections between trees at maturity. Maintaining an extensive root system through root connections increases the chances of a clone surviving when the above ground tree is dead and may also enhance the resilience of balsam poplar stands after disturbance.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Adonsou</LastName><ForeName>Kokouvi E</ForeName><Initials>KE</Initials><AffiliationInfo><Affiliation>Institut de recherche sur les forêts Université du Québec en Abitibi-Témiscamingue Amos QC Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>DesRochers</LastName><ForeName>Annie</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>Institut de recherche sur les forêts Université du Québec en Abitibi-Témiscamingue Amos QC Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Tremblay</LastName><ForeName>Francine</ForeName><Initials>F</Initials><AffiliationInfo><Affiliation>Institut de recherche sur les forêts Université du Québec en Abitibi-Témiscamingue Rouyn-Noranda QC Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Thomas</LastName><ForeName>Barb R</ForeName><Initials>BR</Initials><AffiliationInfo><Affiliation>Department of Renewable Resources University of Alberta Edmonton AB Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Isabel</LastName><ForeName>Nathalie</ForeName><Initials>N</Initials><AffiliationInfo><Affiliation>Natural Resources Canada Canadian Forest Service Laurentian Forestry Centre Québec QC Canada.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2016</Year><Month>09</Month><Day>06</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Ecol Evol</MedlineTA><NlmUniqueID>101566408</NlmUniqueID><ISSNLinking>2045-7758</ISSNLinking></MedlineJournalInfo><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="Y">asexual reproduction</Keyword><Keyword MajorTopicYN="Y">balsam poplar</Keyword><Keyword MajorTopicYN="Y">clonal diversity</Keyword><Keyword MajorTopicYN="Y">communal root system</Keyword><Keyword MajorTopicYN="Y">root connection root suckering</Keyword><Keyword MajorTopicYN="Y">single‐nucleotide polymorphism</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2015</Year><Month>12</Month><Day>02</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2016</Year><Month>07</Month><Day>17</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2016</Year><Month>08</Month><Day>04</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2017</Year><Month>7</Month><Day>21</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2017</Year><Month>7</Month><Day>21</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2017</Year><Month>7</Month><Day>21</Day><Hour>6</Hour><Minute>1</Minute></PubMedPubDate></History><PublicationStatus>epublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">28725365</ArticleId><ArticleId IdType="doi">10.1002/ece3.2441</ArticleId><ArticleId IdType="pii">ECE32441</ArticleId><ArticleId IdType="pmc">PMC5513237</ArticleId></ArticleIdList><ReferenceList><Reference><Citation>Ann Bot. 2005 Jan;95(2):351-61</Citation><ArticleIdList><ArticleId IdType="pubmed">15567806</ArticleId></ArticleIdList></Reference><Reference><Citation>Mol Ecol. 2005 Sep;14(10):2969-80</Citation><ArticleIdList><ArticleId IdType="pubmed">16101767</ArticleId></ArticleIdList></Reference><Reference><Citation>Am J Bot. 2011 Jun;98(6):967-74</Citation><ArticleIdList><ArticleId IdType="pubmed">21653509</ArticleId></ArticleIdList></Reference><Reference><Citation>Science. 1904 Jul 22;20(499):118-9</Citation><ArticleIdList><ArticleId IdType="pubmed">17772927</ArticleId></ArticleIdList></Reference><Reference><Citation>Am J Bot. 2009 Aug;96(8):1500-5</Citation><ArticleIdList><ArticleId IdType="pubmed">21628295</ArticleId></ArticleIdList></Reference></ReferenceList></PubmedData></pubmed><affiliations><list></list><tree><noCountry><name sortKey="Adonsou, Kokouvi E" sort="Adonsou, Kokouvi E" uniqKey="Adonsou K" first="Kokouvi E" last="Adonsou">Kokouvi E. Adonsou</name><name sortKey="Desrochers, Annie" sort="Desrochers, Annie" uniqKey="Desrochers A" first="Annie" last="Desrochers">Annie Desrochers</name><name sortKey="Isabel, Nathalie" sort="Isabel, Nathalie" uniqKey="Isabel N" first="Nathalie" last="Isabel">Nathalie Isabel</name><name sortKey="Thomas, Barb R" sort="Thomas, Barb R" uniqKey="Thomas B" first="Barb R" last="Thomas">Barb R. Thomas</name><name sortKey="Tremblay, Francine" sort="Tremblay, Francine" uniqKey="Tremblay F" first="Francine" last="Tremblay">Francine Tremblay</name></noCountry></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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