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Article: Comparative analysis of phylogenetic relationships of grain amaranths and their wild relatives (Amaranthus; Amaranthaceae) using internal transcribed spacer, amplified fragment length polymorphism, and double-primer fluorescent intersimple sequence repeat markers

TitleComparative analysis of phylogenetic relationships of grain amaranths and their wild relatives (Amaranthus; Amaranthaceae) using internal transcribed spacer, amplified fragment length polymorphism, and double-primer fluorescent intersimple sequence repeat markers
Authors
Issue Date2001
PublisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/ympev
Citation
Molecular Phylogenetics And Evolution, 2001, v. 21 n. 3, p. 372-387 How to Cite?
AbstractThe most economically important group of species in the genus Amaranthus is the A. hybridus species complex, including three cultivated grain amaranths, A. cruentus, A. caudatus, and A. hypochondriacus, and their putative wild progenitors, A. hybridus, A. quitensis, and A. powellii. Taxonomic confusion exists among these closely related taxa. Internal transcribed spacer (ITS) of nuclear ribosomal DNA, amplified fragment length polymorphism (AFLP), and double-primer fluorescent intersimple sequence repeat (ISSR) were employed to reexamine the taxonomic status and phylogenetic relationships of grain amaranths and their wild relatives. Low ITS divergence in these taxa resulted in poorly resolved phylogeny. However, extensive polymorphisms exist at AFLP and ISSR loci both within and among species. In phylogenetic trees based on either AFLP or ISSR or the combined data sets, nearly all intraspecific accessions can be placed in their corresponding species clades, indicating that these taxa are well-separated species. The AFLP trees share many features in common with the ISSR trees, both showing a close relationship between A. caudatus and A. quitensis, placing A. hybridus in the same clade as all grain amaranths, and indicating that A. powellii is the most divergent taxon in the A. hybridus species complex. This study has demonstrated that both AFLP and double-primer fluorescent ISSR have a great potential for generating a large number of informative characters for phylogenetic analysis of closely related species, especially when ITS diversity is insufficient. @ 2001 Elsevier Science.
Persistent Identifierhttp://hdl.handle.net/10722/177184
ISSN
2015 Impact Factor: 3.792
2015 SCImago Journal Rankings: 2.287
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorXu, Fen_US
dc.contributor.authorSun, Men_US
dc.date.accessioned2012-12-04T02:30:17Z-
dc.date.available2012-12-04T02:30:17Z-
dc.date.issued2001en_US
dc.identifier.citationMolecular Phylogenetics And Evolution, 2001, v. 21 n. 3, p. 372-387en_US
dc.identifier.issn1055-7903en_US
dc.identifier.urihttp://hdl.handle.net/10722/177184-
dc.description.abstractThe most economically important group of species in the genus Amaranthus is the A. hybridus species complex, including three cultivated grain amaranths, A. cruentus, A. caudatus, and A. hypochondriacus, and their putative wild progenitors, A. hybridus, A. quitensis, and A. powellii. Taxonomic confusion exists among these closely related taxa. Internal transcribed spacer (ITS) of nuclear ribosomal DNA, amplified fragment length polymorphism (AFLP), and double-primer fluorescent intersimple sequence repeat (ISSR) were employed to reexamine the taxonomic status and phylogenetic relationships of grain amaranths and their wild relatives. Low ITS divergence in these taxa resulted in poorly resolved phylogeny. However, extensive polymorphisms exist at AFLP and ISSR loci both within and among species. In phylogenetic trees based on either AFLP or ISSR or the combined data sets, nearly all intraspecific accessions can be placed in their corresponding species clades, indicating that these taxa are well-separated species. The AFLP trees share many features in common with the ISSR trees, both showing a close relationship between A. caudatus and A. quitensis, placing A. hybridus in the same clade as all grain amaranths, and indicating that A. powellii is the most divergent taxon in the A. hybridus species complex. This study has demonstrated that both AFLP and double-primer fluorescent ISSR have a great potential for generating a large number of informative characters for phylogenetic analysis of closely related species, especially when ITS diversity is insufficient. @ 2001 Elsevier Science.en_US
dc.languageengen_US
dc.publisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/ympeven_US
dc.relation.ispartofMolecular Phylogenetics and Evolutionen_US
dc.subject.meshAmaranthaceae - Classification - Geneticsen_US
dc.subject.meshBase Sequenceen_US
dc.subject.meshDna Primersen_US
dc.subject.meshDna, Plant - Geneticsen_US
dc.subject.meshFluorescent Dyesen_US
dc.subject.meshPhylogenyen_US
dc.subject.meshPolymorphism, Restriction Fragment Lengthen_US
dc.subject.meshRepetitive Sequences, Nucleic Aciden_US
dc.subject.meshSpecies Specificityen_US
dc.titleComparative analysis of phylogenetic relationships of grain amaranths and their wild relatives (Amaranthus; Amaranthaceae) using internal transcribed spacer, amplified fragment length polymorphism, and double-primer fluorescent intersimple sequence repeat markersen_US
dc.typeArticleen_US
dc.identifier.emailSun, M: meisun@hkucc.hku.hken_US
dc.identifier.authoritySun, M=rp00779en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1006/mpev.2001.1016en_US
dc.identifier.pmid11741380-
dc.identifier.scopuseid_2-s2.0-0035543117en_US
dc.identifier.hkuros66204-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035543117&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume21en_US
dc.identifier.issue3en_US
dc.identifier.spage372en_US
dc.identifier.epage387en_US
dc.identifier.isiWOS:000173251300004-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridXu, F=7401695108en_US
dc.identifier.scopusauthoridSun, M=7403181447en_US
dc.identifier.citeulike4343940-

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