{"id":82251,"date":"2020-05-28T15:04:45","date_gmt":"2020-05-28T19:04:45","guid":{"rendered":"https:\/\/mrnf.gouv.qc.ca\/nos-publications\/sequence-tagged-site-markers-progenitor-derivative-species-conifers\/"},"modified":"2020-05-28T15:04:45","modified_gmt":"2020-05-28T19:04:45","slug":"sequence-tagged-site-markers-progenitor-derivative-species-conifers","status":"publish","type":"cpt_publication","link":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/sequence-tagged-site-markers-progenitor-derivative-species-conifers\/","title":{"rendered":"Evidence from sequence-tagged-site markers of a recent progenitor-derivative species pair in conifers"},"content":{"rendered":"\n<p>Published in <strong>Proceedings of the National Academy of Science 97(21): 113311-11336<\/strong><\/p>\n<p>Black spruce (<em>Picea mariana <\/em>[B.S.P.] Mill.) and red spruce (<em>Picea rubens <\/em>Sarg.) are two conifer species known to hybridize naturally in northeastern North America. We hypothesized that there is a progenitor-derivative relationship between these two taxa and conducted a genetic investigation by using sequence-tagged-site markers of expressed genes. Based on the 26 sequence-tagged-site loci assayed in this study, the unbiased genetic identity between the two taxa was quite high with a value of 0.920. The mean number of polymorphic loci, the mean number of alleles per polymorphic locus, and the average observed heterozygosity were lower in red spruce (<em>P<\/em> = 35%, <em>A<\/em><sub>P<\/sub> = 2.1, <em>H<\/em><sub>o<\/sub> = 0.069) than in black spruce (<em>P<\/em> = 54%, <em>A<\/em><sub>P<\/sub> = 2.9, <em>H<\/em><sub>o<\/sub> = 0.103). No unique alleles were found in red spruce, and the observed patterns of allele distribution indicated that the genetic diversity of red spruce was essentially a subset of that found in black spruce. When considered in combination with ecological evidence and simulation results, these observations clearly support the existence of a progenitor-derivative relationship and suggest that the reduced level of genetic diversity in red spruce may result from allopatric speciation through glaciation-induced isolation of a preexisting black spruce population during the Pleistocene era. Our observations signal a need for a thorough reexamination of several conifer species complexes in which natural hybridization is known to occur.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Published in Proceedings of the National Academy of Science 97(21): 113311-11336 Black spruce (Picea mariana [B.S.P.] Mill.) and red spruce (Picea rubens Sarg.) are two conifer species known to hybridize naturally in northeastern North America. We hypothesized that there is a progenitor-derivative relationship between these two taxa and conducted a genetic investigation by using sequence-tagged-site [&hellip;]<\/p>\n","protected":false},"template":"","format":"standard","cptt_secteur":[1179],"cptt_theme":[1186,1180,1181,1208],"cptt_categ_publi":[1149],"cptt_auteurs_ministeriels":[1105],"class_list":["post-82251","cpt_publication","type-cpt_publication","status-publish","format-standard","hentry","cptt_secteur-forests","cptt_theme-forest-genetics","cptt_theme-forestry-research","cptt_theme-forests","cptt_theme-genetic-improvement-of-trees","cptt_categ_publi-scientific-article","cptt_auteurs_ministeriels-m-perron"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Evidence from sequence-tagged-site markers of a recent progenitor-derivative species pair in conifers - Minist\u00e8re des Ressources naturelles et des For\u00eats<\/title>\n<meta name=\"description\" content=\"Our observations signal a need for a thorough reexamination of several conifer species complexes in which natural hybridization is known to occur.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/sequence-tagged-site-markers-progenitor-derivative-species-conifers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Evidence from sequence-tagged-site markers of a recent progenitor-derivative species pair in conifers - 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