Comparative morphology and phylogeny of Nicotiana section Suaveolentes (Solanaceae) in Australia and the South Pacific

  title={Comparative morphology and phylogeny of Nicotiana section Suaveolentes (Solanaceae) in Australia and the South Pacific},
  author={Claire E. Marks and Ed Newbigin and Pauline Y. Ladiges},
  journal={Australian Systematic Botany},
Molecular phylogenies alone have failed to resolve evolutionary relationships of Nicotiana L. section Suaveolentes Goodsp. (Solanaceae), a section largely comprising Australian endemics. Comparative morphology of Suaveolentes is illustrated and characters, together with the chromosome number, coded for phylogenetic analysis. Morphological characters included discrete characters of seeds and trichomes studied by scanning electron and light microscopy, and gap-coded quantitative measurements of… 
Extensive plastid-nuclear discordance in a recent radiation of Nicotiana section Suaveolentes (Solanaceae)
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Nicotiana exemplifies many of the factors that can complicate the reconstruction of polyploid evolutionary history and highlights how reticulate evolution at the diploid level can add even greater complexity to allopolyploid genomes.
Karyotypic variation in Nicotiana section Suaveolentes
Nicotiana section Suaveolentes (Solanaceae) currently includes 28 species and subspecies that are endemic to Australasia and the South Pacific and one African species, N. africana. The section is
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Biodiversity of Nicotiana (Solanaceae)
This brief synopsis outlines current knowledge of the biodiversity of the genus Nicotiana L., the fifth largest genus in the family Solanaceae, which comprises species from Africa, Australia, and the Pacific.
Phylogeny and historical biogeography of Isodon (Lamiaceae): rapid radiation in south-west China and Miocene overland dispersal into Africa.
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The Dulcamaroid clade of Solanum, which contains 45 species of mostly vining or weakly scandent species, is divided into five morphologically and geographically delimited species groups to facilitate further study.
Time-calibrated phylogenetic trees establish a lag between polyploidisation and diversification in Nicotiana (Solanaceae)
This study investigates the timing of diversification in allopolyploids of Nicotiana (Solanaceae) utilising sequence data of maternal and paternal origin to look for evidence of a lag phase during which diploidisation took place, the first report of a substantial lag phase being investigated below the family level.
Background and History of Tobacco Genome Resources
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Nicotiana benthamiana, A Popular Model for Genome Evolution and Plant–Pathogen Interactions
Some of the techniques used in N. benthamiana to study plant–pathogen interactions, including virus-induced gene silencing, transient protein expression by agroinfiltration, stable genetic manipulation, and transcriptomics analysis, are reviewed and some of the results are discussed.


Molecular phylogeny of Nicotiana (Solanaceae) based on the nucleotide sequence of the matK gene.
The results support the previous hypothesis that this genus originated in South America and subsequently spread to other continents and the suggestion that the ancestral basic chromosome number is x = 12 and that polyploidsy and aneuploidy have occurred independently several times during the evolution of Nicotiana species is discussed.
Molecular systematics, GISH and the origin of hybrid taxa in Nicotiana (Solanaceae).
Relying solely upon ITS nrDNA analysis to reveal phylogenetic patterns in a complex genus such as Nicotiana is insufficient, and it is clear that conventional analysis of single data sets, such as ITS, is likely to be misleading in at least some respects about evolutionary history.
A molecular phylogeny of Solanum sect. Pteroidea (Solanaceae) and the utility of COSII markers in resolving relationships among closely related species
This study infer phylogenetic relationships among sixteen species of Solanum, including all ten species of S. sect.
Phylogenetics of Tribe Anthocercideae (Solanaceae) Based on ndhF and trnL/F Sequence Data
The phylogeny was used to test the tribe's monophyly, discover relationships within the tribe, and make inferences on character evolution and biogeography, and several characters were inferred to be derived within the Anthocercideae.
A molecular phylogeny of the Solanaceae
The current results corroborate previous studies that identify a monophyletic subfamily Solanoideae and the more inclusive "x = 12" clade, which includes Nicotiana and the Australian tribe Anthocercideae, and provide greater resolution among lineages within Solanoidesae.
Combining Data in Phylogenetic Systematics: An Empirical Approach Using Three Molecular Data Sets in the Solanaceae
Data from sequences of two chloroplast DNA genes, ndhV and rbcL, and from restriction site mapping studies of the entire chloroplane genome were analyzed for the same set of 17 species of Solanaceae and the outgroup Ipomoea, finding the "X = 12" dade is the most well-supported dade within the family.
Reconstruction of Solanaceae Phylogeny Using the Nuclear Gene SAMT
The results obtained in this study indicate that expanded sampling of taxa for SAMT and the study of additional nuclear gene sequences in conjunction with cpDNA will be valuable towards improving the understanding of Solanaceae phylogeny.
Intragenic recombination events and evidence for hybrid speciation in Nicotiana (Solanaceae).
This work uses data from low-copy nuclear genes to evaluate long-standing hypotheses of homoploid (interspecific) hybrid speciation in Nicotiana and reconstruct a complex series of reticulation events that have been important in the evolutionary history of this genus.