Phylogeny and character evolution in Medicago (Leguminosae): Evidence from analyses of plastid trnK/matK and nuclear GA3ox1 sequences

Abstract

These results support the hypothesis that some characters considered important in existing taxonomies, for example, single-seeded fruits that have arisen more than once in both Medicago and Trigonella, are indeed homoplastic. Others, such as the 2n = 14 chromosome number, have also arisen independently within the genus. In addition, we demonstrate support for the utility of GA3ox1 sequences for phylogenetic analysis among and within closely related genera of legumes.

A Change inSHATTERPROOFProtein Lies at the Origin of a Fruit Morphological Novelty and a New Strategy for Seed Dispersal inMedicagoGenus

“…Figure 1 shows the phylogenetic relationships among these 17 species on a tree based on the plastid maturaseK (matK) gene sequence distances (Steele et al, 2010), which is in good agreement with other phylogenetic analyses of the genus (Bena, 2001;Maureira-Butler et al, 2008;Yoder et al, 2013). In the tree, species with coiled fruits, defined by pods that complete at least a 360°turn, and uncoiled fruits, defined by straight or slightly curved pods never completing a full 360°turn, are indicated (for pictures of fruits, see Supplemental Fig.…”

“…The phylogenetic relationships among the species included in this study are shown. The tree has been redrawn based on the phylogeny based on the gene sequence distances of the plastid matk genes published in Steele et al (2010), eliminating the species not used in our study. Species with coiled pod morphology are shaded in orange and identified with an orange circle.…”

Legume Crops Phylogeny and Genetic Diversity for Science and Breeding

“…Platycarpa (Steele et al, 2010). Difficulty in resolving the Medicago phylogeny may be due to historic and ongoing hybridization within the genus (Maureira-Butler et al, 2008;Steele, et al, 2010). More recently, Yoder et al (2013) used whole-genome sequence data from 29 Medicago taxa to examine phylogenetic relationships.…”

“…Lupularia and sect. Platycarpa (Steele et al, 2010). Difficulty in resolving the Medicago phylogeny may be due to historic and ongoing hybridization within the genus (Maureira-Butler et al, 2008;Steele, et al, 2010).…”

Legume phylogeny and classification in the 21st century: Progress, prospects and lessons for other species–rich clades

“…(Pirie & al., 2009); Lespedeza Michx. (Nemoto & al., 2010); Medicago L. (Steele & al., 2010), Ononis L. (Turini & al., 2010); Adenocarpus DC. (Cubas & al., 2010); Podalyria Willd.…”