A Molecular Phylogeny of Apiaceae Subfamily Apioideae: Evidence from Nuclear Ribosomal DNA Internal Transcribed Spacer Sequences

Downie, Stephen R.; Katz-Downie, Deborah S.

doi:10.2307/2445943

Cited by 113 publications

(73 citation statements)

References 35 publications

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“…The affinity of some members of Pimpinella with the tribes Oenantheae, Selineae, and the clades Acronema and East Asia, and the polyphyly of the genus, were inferred in earlier phylogenetic studies (Figure 1) (Downie and Katz-Downie, 1996;Zhou et al, 2008Zhou et al, , 2009Downie et al, 2010;Magee et al, 2010;Wang et al, 2014). Consistent with previous data (Magee et al, 2010;Wang et al, 2014), a close correlation was observed between geography and the phylogenetic tree in our analysis ( Figure 1).…”

Section: Phylogenetic Placement Of Pimpinella Speciessupporting

confidence: 92%

Phylogeny of the Southwest Asian Pimpinella and related genera based on nuclear and plastid sequences

2016

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ABSTRACT. Pimpinella L. is a large genus and arguably one of the most complex genera in the family Apiaceae. In this study, the infrageneric relationship between Southwest Asian Pimpinella species and their generic allies in the tribe Pimpinelleae Spreng were investigated using sequence data from the cpDNA (chloroplast DNA) rps16 exon and rpL16 intron and nuclear ribosomal DNA internal transcribed spacer regions. In total, 185 accessions representing 52 species of Pimpinella, 8 species of Aegopodium, and the monotypic Opsicarpium Mozaff. were analyzed using maximum parsimony and Bayesian methods. In our phylogenetic study, Pimpinella and Opsicarpium were considered together as a monophyletic group within the tribe Pimpinelleae. As a result, Opsicarpium insignis Mozaff has been formally transferred to Pimpinella. Our results indicate that the genera Pimpinella and Reutera Boiss formed a monophyletic group and also supported merging the

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Section: Phylogenetic Placement Of Pimpinella Speciessupporting

confidence: 92%

Phylogeny of the Southwest Asian Pimpinella and related genera based on nuclear and plastid sequences

2016

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“…Both the forward and reverse strands of the ITS region of nuclear encoded ribosomal DNA were sequenced (Baldwin 1992). These sequences were aligned to 6 previously published sequences, Aralia chinensis (U63181), Arthrophyllum angustatum (U63182), Pittosporum dallii (U63196), and Polysciasfruticosa (U63191) (Mitchell & Wagstaff 1997), and Daucus carota (U27589, U30315) and Heteromorpha arborescens (U27578, U30314) (Downie & Katz-Downie 1996). The 14 sequences were aligned using Clustal W vers.…”

Section: Methodsmentioning

confidence: 99%

Evolution ofStilbocarpa, a megaherb from New Zealand's sub‐antarctic islands

Mitchell

Meurk

Wagstaff

1999

New Zealand Journal of Botany

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Challenges to the traditional circumscription of Apiaceae and Araliaceae are emerging as a result of phylogenetic analysis of DNA sequences. Traditionally classified as Araliaceae, Stilbocarpa emerges with Schizeilema and Azorella, both members of the Apiaceae. In our analyses of nuclear ITS sequences, these three genera comprise a distinct Southern Hemisphere lineage. The humid climate, cool equable temperatures, locally abundant nutrients, and absence of herbivores are ecological features of the sub-antarctic islands that may have contributed to the evolution of the unusual megaherb, Stilbocarpa, from these diminutive apiaceous ancestors.

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“…70770) and 35 S-dATP labeling. Amplifications of the ITS region used primers ITS5 and ITS4 (17) as modified by Downie and Katz-Downie (18). Complementary strands of the ITS region were sequenced by using primers P2, P3, P4, and P5 (17).…”

Section: Methodsmentioning

confidence: 99%

Molecular evidence for an African origin of the Hawaiian endemicHesperomannia (Asteraceae)

Kim

Keeley

Vroom

et al. 1998

Proc. Natl. Acad. Sci. U.S.A.

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Identification of the progenitors of plants endemic to oceanic islands often is complicated by extreme morphological divergence between island and continental taxa. This is especially true for the Hawaiian Islands, which are 3,900 km from any continental source. We examine the origin of Hesperomannia, a genus of three species endemic to Hawaii that always have been placed in the tribe Mutisieae of the sunflower family. Phylogenetic analyses of representatives from all tribes in this family using the chloroplast gene ndhF (where ndhF is the ND5 protein of chloroplast NADH dehydrogenase) indicate that Hesperomannia belongs to the tribe Vernonieae. Phylogenetic comparisons within the Vernonieae using sequences of both ndhF and the internal transcribed spacer regions of nuclear ribosomal DNA reveal that Hesperomannia is sister to African species of Vernonia. Long-distance dispersal northeastward from Africa to southeast Asia and across the many Pacific Ocean island chains is the most likely explanation for this unusual biogeographic connection. The 17-to 26-million-year divergence time between African Vernonia and Hesperomannia estimated by the DNA sequences predates the age of the eight existing Hawaiian Islands. These estimates are consistent with an hypothesis that the progenitor of Hesperomannia arrived at one of the low islands of the Hawaiian-Emperor chain between the late Oligocene and mid-Miocene when these islands were above sea level. Subsequent to its arrival the southeast Pacific island chains served as steppingstones for dispersal to the existing Hawaiian Islands.The Hawaiian Islands are 3,900 km from the closest continent and are one of the most remote land masses in the world. Despite this distance the islands have an exceptionally diverse flora. Estimates of endemism for major archipelagos show that Hawaii has the highest known (90%) compared with 40% for the Galapagos and 25% for the Canaries (1). It is estimated that the 1,000 species of native Hawaiian flowering plants originated from 270-280 progenitors (2), all as waif elements brought by long-distance dispersal. Identification of specific progenitors and source regions is difficult because of the disharmonic nature of the flora and number of possible source areas. Suggested floristic affinities include Malaysia, North America, northern South America, Australia, New Zealand, and pantropical or southern South America (2-4). Recent molecular phylogenetic studies of Hawaiian endemic plants have provided many new insights into the origin and evolution of the flora, including the identification of continental relatives from western North America (5, 6) and New Guinea (7) and both single (5, 8) and multiple colonizations (9) of the archipelago. The existence of a chain of Hawaiian islands for the past 70 million years (myr) adds to the complexity of determining the origin of the endemic flora. The affinities of the flora to disparate geographic regions and the large distances to source areas suggests that the biogeographic histories of endemic...

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A Molecular Phylogeny of Apiaceae Subfamily Apioideae: Evidence from Nuclear Ribosomal DNA Internal Transcribed Spacer Sequences

Cited by 113 publications

References 35 publications

Phylogeny of the Southwest Asian Pimpinella and related genera based on nuclear and plastid sequences

Phylogeny of the Southwest Asian Pimpinella and related genera based on nuclear and plastid sequences

Evolution ofStilbocarpa, a megaherb from New Zealand's sub‐antarctic islands

Molecular evidence for an African origin of the Hawaiian endemicHesperomannia (Asteraceae)

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