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      The value of chemosystematics in clarifying relationships in the genistoid tribes of papilionoid legumes

      Biochemical Systematics and Ecology

      Elsevier BV

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          Patterns of quinolizidine alkaloids in 56 species of the genus Lupinus

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            Phylogenetic relationships in the Papilionoideae (family Leguminosae) based on nucleotide sequences of cpDNA (rbcL) and ncDNA (ITS 1 and 2).

             M. Wink,  Andrea Kass (1997)
            Sequences of cpDNA (rbcL) were determined for 94 species and of ncDNA [ITS 1 + 2 regions (internal transcribed spacer) of rDNA] for 75 species representing mainly the papilionoid tribes Sophoreae, Thermopsideae Podalyrieae, Liparieae, Crotalarieae, and Genisteae. Sequence data were used to reconstruct the underlying molecular phylogeny. Several clusters and furcations were identical in the rbcL and ITS trees of the Papilionoideae, indicating that a reticulate evolution due to past hybridization of members from different tribes and genera is unlikely: The Sophoreae (especially Styphnolobium japonicum (syn. Sophora japonica) and Sophora secundiflora) are positioned at the base of the papilionoid tree, whereas some other Sophora species (Sophora davidii, flavescens, jaubertii, microphylla) are closely related to Thermopsideae/Podalyrieae. The Thermopsideae/Podylyrieae cluster (including Liparieae) shares ancestry with the Crotalarieae and Genisteae. Argyrolobium (African taxa) and Melolobium cluster between Crotalarieae and Genisteae. In the Genisteae three clusters are apparent: the monophyletic genus Lupinus, the Cytisus-, and the Genista-group. According to this analysis, the Cytisus-complex includes Cytisus, Lembotropis, Chamaecytisus, Spartocytisus, and Calicotome. The Genista-group consists of Genista, Teline, and Chamaespartium sagittale. Other genera (e.g., Adenocarpus, Argyrocytisus, Cytisophyllum, Erinacea, Laburnum, Petteria, Retama, Spartium, and Ulex) could not be attributed unequivocally to the Cytisus or Genista complex.
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              Phylogenetic systematics of the tribe Millettieae (Leguminosae) based on chloroplast trnK/matK sequences and its implications for evolutionary patterns in Papilionoideae.

              Phylogenetic relationships in the tribe Millettieae and allies in the subfamily Papilionoideae (Leguminosae) were reconstructed from chloroplast trnK/matK sequences. Sixty-two accessions representing 57 traditionally recognized genera of Papilionoideae were sampled, including 27 samples from Millettieae. Phylogenies were constructed using maximum parsimony and are well resolved and supported by high bootstrap values. A well-supported "core Millettieae" clade is recognized, comprising the four large genera Millettia, Lonchocarpus, Derris, and Tephrosia. Several other small genera of Millettieae are not in the core Millettieae clade. Platycyamus is grouped with Phaseoleae (in part). Ostryocarpus, Austrosteenisia, and Dalbergiella are neither in the core Millettieae or Phaseoleae clade. These taxa, along with core Millettieae and Phaseoleae, form a monophyletic sister group to Indigofereae. Cyclolobium and Poecilanthe are close to Brongniartieae. Callerya and Wisteria belong to a large clade that includes all the legumes that lack the inverted repeat in their chloroplast genome, which confirms previous rbcL and phytochrome gene family phylogenies. The evolutionary history of four characters was examined in Millettieae and allies: the presence of canavanine, inflorescence types, the dehiscence of pods, and the presence of winged pods. trnK/matK sequence analysis suggests that the presence of a pseudoraceme or pseudopanicle and the accumulation of nonprotein amino acids are phylogenetically informative for Millettieae and allies with only a few exceptions.
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                Author and article information

                Journal
                Biochemical Systematics and Ecology
                Biochemical Systematics and Ecology
                Elsevier BV
                03051978
                August 2003
                August 2003
                : 31
                : 8
                : 875-884
                10.1016/S0305-1978(03)00083-8
                © 2003

                http://www.elsevier.com/tdm/userlicense/1.0/

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