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The evolution of the plastid chromosome in land plants: gene content, gene order, gene function
This review bridges functional and evolutionary aspects of plastid chromosome architecture in land plants and their putative ancestors and suggests that the slow mode at which the plastome typically evolves is likely to be influenced by a combination of different molecular mechanisms. Expand
Mechanisms of Functional and Physical Genome Reduction in Photosynthetic and Nonphotosynthetic Parasitic Plants of the Broomrape Family[W][OPEN]
The authors report the complete plastomes of 10 photosynthetic and nonphotosynthetic parasites plus their nonparasitic sister from the broomrape family (Orobanchaceae), finding that the establishment of obligate parasitism triggers the relaxation of selective constraints. Expand
Mechanistic model of evolutionary rate variation en route to a nonphotosynthetic lifestyle in plants
It is suggested that the transition to obligate parasitism relaxes functional constraints on plastid genes in a stepwise manner, and during the functional reduction process, the elevation of evolutionary rates reaches several new rate equilibria, possibly relating to the modified protein turnover rates in heterotrophic plastids. Expand
Phylogeny of holoparasitic Orobanche (Orobanchaceae) inferred from nuclear ITS sequences.
This work presents the first molecular phylogenetic analysis (using nuclear ITS sequences) that includes members of all sections of Orobanche, Gymnocaulis, Myzorrhiza, Trionychon, and Orobanches. Expand
A Campanulaceous Fate: The Albanian Stenoendemic Asyneuma comosiforme in Fact Belongs to Isophyllous Campanula
The inferred phylogenies clearly support Asyneuma comosiforme as sister to the main clade of isophyllous Campanula species, which is supported by morphological and ecological similarities. Expand
Genetic diversity in widespread species is not congruent with species richness in alpine plant communities.
This work tests whether the genetic and species levels of biodiversity co-vary, using a large-scale and multi-species approach and demonstrates that species richness and genetic diversity are not correlated. Expand
Phylogeny and Biogeography of Isophyllous Species of Campanula (Campanulaceae) in the Mediterranean Area
Abstract Sequence data from the nuclear internal transcribed spacer (ITS) were used to infer phylogenetic relationships within a morphologically, karyologically, and geographically well-defined groupExpand
Evolutionary Consequences, Constraints and Potential of Polyploidy in Plants
This review discusses phylogenetic patterns in the incidence of polyploidy including possible underlying causes, the role of polyPloidy for diversification, the effects of polyPLoidy on geographical and ecological patterns, and putative underlying mechanisms as well as chromosome evolution and evolution of repetitive DNA following polyploids. Expand
Next-generation sequencing reveals the impact of repetitive DNA across phylogenetically closely related genomes of Orobanchaceae.
Among the parasitic species, those in the genus Orobanche have smaller genomes but higher proportions of repetitive DNA than those in Phelipanche, mostly due to a diversification of repeats and an accumulation of Ty3/Gypsy elements. Expand
Chromosomal stasis in diploids contrasts with genome restructuring in auto- and allopolyploid taxa of Hepatica (Ranunculaceae).
Genome restructuring, especially involving 35S rDNA, within a few million yr or less characterizes evolution of both auto- and allopolyploids and of the diploid species H. asiatica, which is the presumptive ancestor of two other diploids species. Expand