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Title: Phylogenetic analysis of Stylosanthes (Fabaceae) based on the internal transcribed spacer region (ITS) of nuclear ribosomal DNA
Authors: Vander Stappen, Jacqueline ×
De Laet, J
Gama-Lopez, S
Van Campenhout, Steven
Volckaert, Guido #
Issue Date: 2002
Publisher: Springer-verlag wien
Series Title: Plant systematics and evolution vol:234 issue:1-4 pages:27-51
Abstract: Phylogenetic relationships in Stylosanthes are inferred by DNA sequence analysis of the ITS region (ITS1-5.8S-ITS2) of the nuclear ribosomal DNA in 119 specimens, representing 36 species of Stylosanthes and 7 species of the outgroup genera Arachis and Chapmannia. In all examined specimens of any particular diploid and (allo)polyploid species, only a single ITS sequence type was observed. This allowed us to identify a parental genome donor for some of the polyploids. In several diploid and polyploid species, different specimens contained a different ITS sequence. Some of these sequence types were present in more than one species. Parsimony analysis yielded several well-supported clades that agree largely with analyses of the chloroplast trnL intron and partially with the current sectional classification. Discordances between the nuclear and cpDNA analyses are explained by a process of allopolyploidization with inheritance of the cpDNA of one parent and fixation of the ITS sequences of the other. S. viscosa has been an important genome donor in this process of speciation by allopolyploidy.
URI: 
ISSN: 0378-2697
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Centre for Food and Microbial Technology
Division of Gene Technology (-)
× corresponding author
# (joint) last author

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