Molecular phylogenetics of Acacia (Fabaceae: Mimosoideae) based on the chloroplast MATK coding sequence and flanking TRNK intron spacer regions

Miller, Joe; Bayer, Randall J.

doi:10.2307/2657071

Cited by 103 publications

(86 citation statements)

References 25 publications

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“…The sampling consisted of 510 taxa, representing single specimens of 508 Acacia species, and two outgroup taxa, Parachidendron pruionsum and Paraserianthes lophantha subsp. lophantha, that were selected based on results of previous studies [33][34][35][36][37] . Each Acacia species in the sample set was chosen from a larger set of 1,152 sequenced samples of the same 508 species in the following way.…”

Section: Methodsmentioning

confidence: 99%

Phylogenetic measures of biodiversity and neo- and paleo-endemism in Australian Acacia

et al. 2014

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Understanding spatial patterns of biodiversity is critical for conservation planning, particularly given rapid habitat loss and human-induced climatic change. Diversity and endemism are typically assessed by comparing species ranges across regions. However, investigation of patterns of species diversity alone misses out on the full richness of patterns that can be inferred using a phylogenetic approach. Here, using Australian Acacia as an example, we show that the application of phylogenetic methods, particularly two new measures, relative phylogenetic diversity and relative phylogenetic endemism, greatly enhances our knowledge of biodiversity across both space and time. We found that areas of high species richness and species endemism are not necessarily areas of high phylogenetic diversity or phylogenetic endemism. We propose a new method called categorical analysis of neo-and paleoendemism (CANAPE) that allows, for the first time, a clear, quantitative distinction between centres of neo-and paleo-endemism, useful to the conservation decision-making process.

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Section: Methodsmentioning

confidence: 99%

Phylogenetic measures of biodiversity and neo- and paleo-endemism in Australian Acacia

et al. 2014

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“…This locus has proved useful for showing multiple polyploid origins in Glycine (Doyle et al 1999a;Doyle et al 2002), and for resolving species relationships in the genus Acacia (Miller and Bayer 2000), another member of the Leguminosae (subfamily Mimosoideae). Our approach consists of estimating a gene genealogy via the construction of a haplotype network.…”

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confidence: 99%

Evolution of Triploidy in Apios Americana (Leguminosae) Revealed by Genealogical Analysis of the Histone H3-D Gene

Joly

Bruneau

2004

Evolution

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Abstract. Autotriploidy is normally considered to be maladaptive in plants because of its association with high levels of sterility. Nonetheless, triploid individuals are found in many plant species and play important roles in plant evolution, in particular as a first step toward tetraploid formation. However, few studies have addressed the evolutionary potential of triploid lineages, which may principally suffer from the impossibility of combining useful mutations in a single genome due to their low fertility. Therefore, triploids acquire genetic diversity only via recurrent evolution and somaclonal mutation. This study evaluates the potential of multiple origins of polyploidy as a source of genetic diversity in Apios americana, a North American legume that possesses both diploid and triploid populations. Ploidy level determination via flow cytometry shows that triploids are mainly restricted to the portion of eastern North America that was covered by ice during the Wisconsinan glaciation 18,000 years ago. This distribution implies that either selection or postglaciation colonization played a role in shaping this cytogeographic pattern. A haplotype network of the single copy nuclear histone H3-D gene reconstructed using statistical parsimony, together with single-strand conformational polymorphism analysis, shows that autotriploidy evolved at least three times in this species and that heterozygosity is high in triploids. The genetic diversity found in A. americana resulting from recurrent evolution and fixed heterozygosity increases the likelihood of producing successful genotypes and may give the opportunity for triploids to be better fit than diploids in new habitats. This suggests that triploid lineages can exhibit evolutionary potential of their own, and do not serve solely as a first step toward tetraploid formation.

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“…The recent molecular and cladistic studies of Chappill & Maslin (1995), Miller & Bayer (2000, 2001, Robinson & Harris (2000), and Luckow et al (in press) have demonstrated that Acacia, as currently defined, is polyphyletic. These same data sources also confirm that Acacia subg.…”

Section: Recent Evidence For Splitting Acaciamentioning

confidence: 99%

“…Nevertheless, the five lineages have been shown to be clearly monophyletic in all recent morphological and molecular studies of the group . The most comprehensive study of the Mimosoideae (Luckow et al in press) A cladogram representing an overview of the most recent chloroplast DNA sequence data of Miller and Bayer (2000, 2001 and Luckow et al (in press) is presented in Fig. 1.…”

Section: Recent Evidence For Splitting Acaciamentioning

confidence: 99%

A New Species ofSenegalia(Fabaceae, Mimosoideae) from Central America and Colombia

Seigler

Ebinger

2014

Novon: A Journal for Botanical Nomenclature

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Molecular phylogenetics of Acacia (Fabaceae: Mimosoideae) based on the chloroplast MATK coding sequence and flanking TRNK intron spacer regions

Cited by 103 publications

References 25 publications

Phylogenetic measures of biodiversity and neo- and paleo-endemism in Australian Acacia

Phylogenetic measures of biodiversity and neo- and paleo-endemism in Australian Acacia

Evolution of Triploidy in Apios Americana (Leguminosae) Revealed by Genealogical Analysis of the Histone H3-D Gene

A New Species ofSenegalia(Fabaceae, Mimosoideae) from Central America and Colombia

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