Generic recircumscription of Parasenecio (Asteraceae: Senecioneae) based on nuclear ribosomal and plastid DNA sequences, with descriptions of two new genera

We describe three new genera of cynipid oak gall wasps from the Nearctic: Burnettweldia Pujade-Villar, Melika & Nicholls, gen. nov., Nichollsiella Melika, Pujade-Villar & Stone, gen. nov., and Disholandricus Melika, Pujade-Villar & Nicholls, gen. nov. (Hymenoptera: Cynipidae: Cynipini). Burnettweldia includes five species, B. californicordazi Cuesta-Porta, Melika & Pujade-Villar, sp. nov., B. conalis (Weld), comb. nov., B. corallina (Bassett), comb. nov., B. plumbella (Kinsey), comb. nov., B. washingtonensis (Gillette), comb. nov.. Nichollsiella includes three species, N. arizonica (Cockerell), comb. nov., N. sulcata (Ashmead), comb. nov., and N. puigi Melika, Cuesta-Porta & Pujade-Villar, sp. nov.. Disholandricus includes four species, D. chrysolepidis (Ashmead), comb. nov., D. lasius (Ashmead), comb. nov., D. reniformis (McCracken & Egbert), comb. nov., D. truckeensis (Ashmead), comb. nov. The genus Paracraspis Weld, comb. rev. is re-established with three species, P. guadaloupensis (Fullaway), P. insolens (Weld), and P. patelloides (Trotter). Descriptions, re-descriptions, diagnoses, keys to genera and species are given, including data on DNA sequences, biology, phenology and distribution.

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Phylogenetic relationships based on nuclear and plastid DNA sequences reveal recent diversification and discordant patterns of morphological evolution of the Chilean genera of Gilliesieae (Amaryllidaceae: Allioideae)

Botanical Journal of the Linnean Society ◽

10.1093/botlinnean/boaa035 ◽

2020 ◽

Vol 194 (1) ◽

pp. 84-99

Author(s):

Inelia Escobar ◽

Eduardo Ruiz-Ponce ◽

Paula J Rudall ◽

Michael F Fay ◽

Oscar Toro-Núñez ◽

...

Keyword(s):

Dna Sequences ◽

Phylogenetic Relationships ◽

Incomplete Lineage Sorting ◽

Morphological Evolution ◽

Strong Support ◽

Plastid Dna ◽

Lineage Sorting ◽

Generic Level ◽

Molecular Analyses ◽

Floral Diversity

Abstract Gilliesieae are a South American tribe of Amaryllidaceae characterized by high floral diversity. Given different taxonomic interpretations and proposals for generic and specific relationships, a representative phylogenetic analysis is required to clarify the systematics of this group. The present study provides a framework for understanding phylogenetic relationships and contributing to the development of an appropriate taxonomic treatment of Gilliesieae. Molecular analyses, based on nuclear (ITS) and plastid DNA sequences (trnL-F and rbcL), resolve with strong support the monophyly of the tribe and the differentiation of two major clades. Clade I comprises the genera Gilliesia, Gethyum and Solaria and Clade II includes Miersia and Speea. These well-supported clades are mostly congruent with vegetative and karyotype characters rather than, e.g., floral symmetry. At the generic level, all molecular analyses reveal the paraphyly of Gilliesia and Miersia. Gethyum was found to be paraphyletic, resulting in the confirmation of Ancrumia as a distinct genus. Several instances of incongruent phylogenetic signals were found among data sets. The calibrated tree suggests a recent diversification of the tribe (Pliocene–Pleistocene), a contemporary process of speciation in which instances of hybridization and incomplete lineage sorting could explain patterns of paraphyly and incongruence of floral morphology.

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A Phylogenetic Analysis of Loasaceae Subfamily Loasoideae Based on Plastid DNA Sequences

International Journal of Plant Sciences ◽

10.1086/427477 ◽

2005 ◽

Vol 166 (2) ◽

pp. 289-300 ◽

Cited By ~ 12

Author(s):

Larry Hufford ◽

Michelle M. McMahon ◽

Robin O’Quinn ◽

Muriel E. Poston

Keyword(s):

Phylogenetic Analysis ◽

Dna Sequences ◽

Plastid Dna

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Jumping through the hoops: the challenges of daffodil (Narcissus) classification

Botanical Journal of the Linnean Society ◽

10.1093/botlinnean/boz032 ◽

2019 ◽

Vol 190 (4) ◽

pp. 389-404 ◽

Cited By ~ 2

Author(s):

Kálmán Könyves ◽

John David ◽

Alastair Culham

Keyword(s):

Dna Sequences ◽

Phylogenetic Trees ◽

Plastid Dna ◽

Microsatellite Data ◽

Population Sampling ◽

Molecular Phylogenetic ◽

History Of ◽

Nuclear Microsatellite ◽

Congruent Group ◽

First Time

Abstract Hoop-petticoat daffodils are a morphologically congruent group comprised of two distinct lineages in molecular phylogenetic trees of Narcissus. It is possible that the morphological similarity is a product of both historic and current low-level gene flow between these lineages. For the first time, we report population sampling from across the entire range of distribution covering the Iberian Peninsula and Morocco. In total, 455 samples were collected from 59 populations. Plastid DNA sequences of matK and ndhF were generated alongside 11 microsatellite loci to permit comparison between plastid and nuclear lineage histories. The plastid DNA phylogenetic tree was highly congruent with previous molecular studies and supported the recognition of these two lineages of hoop-petticoat daffodils as separate sections. Assignment of samples to sections sometimes differed between plastid DNA and (nuclear) microsatellite data. In these cases, the taxa had previously been the focus of dissent in taxonomic placement based on morphology. These discrepancies could be explained by hybridization and introgression among the two lineages during the evolution of hoop-petticoat daffodils, and shows that placement of species in sections is dependent on the source of data used. This study underlines the complex evolutionary history of Narcissus and highlights the discrepancies between floral morphology and phylogeny, which provides a continuing challenge for the systematics of Narcissus.

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Novel Neidium Pfitzer species from western Canada based upon morphology and plastid DNA sequences

Phytotaxa ◽

10.11646/phytotaxa.419.1.3 ◽

2019 ◽

Vol 419 (1) ◽

pp. 39-62 ◽

Cited By ~ 3

Author(s):

PAUL B. HAMILTON ◽

AMANDA M. SAVOIE ◽

CYNTHIA M. SAYRE ◽

OLIVER SKIBBE ◽

JONAS ZIMMERMANN ◽

...

Keyword(s):

Dna Sequences ◽

External Surface ◽

Sequence Data ◽

Lake Victoria ◽

Plastid Dna ◽

Botanical Garden ◽

Western Canada ◽

Nutrient Loads ◽

Small Stream ◽

Stream System

Five taxa in the genus Neidium, N. iridis, N. beatyi sp. nov., N. vandusenense sp. nov., N. collare sp. nov. and N. lavoieanum sp. nov. are documented from a pond and stream system in the VanDusen Botanical Garden, Vancouver, Canada. Neidium beatyi is a large linear species with multiple longitudinal canals and sagittate apices. The areolae are occluded by finger-like silica extensions on the external surface. This taxon is distinguished from Neidium iridis by the number of longitudinal canals (>5), shape of the valve apices, and smaller size. Neidium vandusenense is broadly linear with distinct rostrate apices. Two-three longitudinal canals are present along each margin. Plastid rbcL sequence data associates this taxon with N. amphigomphus. Neidium collare is an elliptic lanceolate taxon with one longitudinal canal. This taxon is genetically related to N. bisculatum sensu lato, but with a different shape form. Neidium lavoieanum has a valve shape form similar to Neidium potapovae, but is larger and genetically similar to N. productum sensu lato. The five Neidium taxa were observed in a small stream next to Lake Victoria (pond) in the VanDusen Botanical Garden Vancouver, Canada. The water was mildly alkaline with a pH of 7.86, a conductance of 163 µS/cm, higher nutrient loads and low metal content.

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Phylogenetic placement of the enigmatic genus Holocheila (Lamiaceae) inferred from plastid DNA sequences

Taxon ◽

10.12705/632.8 ◽

2014 ◽

Vol 63 (2) ◽

pp. 355-366 ◽

Cited By ~ 8

Author(s):

Ya-Ping Chen ◽

Bo Li ◽

Richard G. Olmstead ◽

Philip D. Cantino ◽

En-De Liu ◽

...

Keyword(s):

Dna Sequences ◽

Plastid Dna ◽

Phylogenetic Placement

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Phylogeny of the Paniceae (Poaceae: Panicoideae): integrating plastid DNA sequences and morphology into a new classification (project)

MorphoBank datasets ◽

10.7934/p942 ◽

2014 ◽

Author(s):

M Morrone ◽

A Aagesen ◽

A Scataglini ◽

L Salariato ◽

S Denham ◽

...

Keyword(s):

Dna Sequences ◽

Plastid Dna ◽

New Classification ◽

Classification Project

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Historical biogeography of two cosmopolitan families of flowering plants: Annonaceae and Rhamnaceae

Philosophical Transactions of the Royal Society B Biological Sciences ◽

10.1098/rstb.2004.1537 ◽

2004 ◽

Vol 359 (1450) ◽

pp. 1495-1508 ◽

Cited By ~ 165

Author(s):

J. E. Richardson ◽

L. W. Chatrou ◽

J. B. Mols ◽

R. H. J. Erkens ◽

M. D. Pirie

Keyword(s):

Dna Sequences ◽

Phylogenetic Trees ◽

Phylogenetic Analyses ◽

Plastid Dna ◽

Distribution Patterns ◽

Historical Biogeography ◽

Rate Heterogeneity ◽

Long Distance ◽

Fossil Calibration ◽

Dispersal Capability

Annonaceae are a pantropically distributed family found predominantly in rainforests, so they are megathermal taxa, whereas Rhamnaceae are a cosmopolitan family that tend to be found in xeric regions and may be classified as mesothermal. Phylogenetic analyses of these families are presented based on rbcL and trn L–F plastid DNA sequences. Likelihood ratio tests revealed rate heterogeneity in both phylogenetic trees and they were therefore made ultrametric using non–parametric rate smoothing and penalized likelihood. Divergence times were then estimated using fossil calibration points. The historical biogeography of these families that are species rich in different biomes is discussed and compared with other published reconstructions. Rhamnaceae and most lineages within Annonaceae are too young to have had their distribution patterns influenced by break–up of previously connected Gondwanan landmasses. Contrasts in the degree of geographical structure between these two families may be explained by differences in age and dispersal capability. In both groups, long–distance dispersal appears to have played a more significant role in establishing modern patterns than had previously been assumed. Both families also contain examples of recent diversification of species–rich lineages. An understanding of the processes responsible for shaping the distribution patterns of these families has contributed to our understanding of the historical assembly of the biomes that they occupy.

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