Bipinnate acacias (Acacia subg. Phyllodineae sect. Botrycephalae) of eastern Australia are polyphyletic based on DNA sequence data

2006 ◽  
Vol 19 (4) ◽  
pp. 315 ◽  
Author(s):  
Gillian K. Brown ◽  
Siti R. Ariati ◽  
Daniel J. Murphy ◽  
Joseph T. H. Miller ◽  
Pauline Y. Ladiges
Keyword(s):  
Phylogenetic Analysis ◽  
Dna Sequence ◽  
Sequence Data ◽  
Sequence Divergence ◽  
Morphological Characters ◽  
Dna Sequence Data ◽  
Main Clade ◽  
Eastern Australia ◽  
Limited Sequence

A phylogenetic analysis of Acacia subg. Phyllodineae sect. Botrycephalae, endemic to eastern Australia, is presented based on a combined dataset of ITS and ETS sequences of nrDNA. A smaller set of species was sequenced also for the cpDNA trnK region. A limited number of morphological characters was also combined with the ITS+ETS dataset for most taxa. Thirty-eight of 41 Botrycephalae species were sequenced, together with a sample of ten uninerved phyllodinous species (sect. Phyllodineae). Although these DNA regions showed limited sequence divergence, bootstrap supported nodes of the consensus ITS+ETS tree indicate that Botrycephalae as currently defined is polyphyletic. Eight bipinnate species fell outside the main clade of Botrycephalae species while seven phyllodinous species were nested within it, near the base. The few derived but homoplasious morphological characters that were discovered included: presence of appressed unicellular hairs, presence of jugary and interjugary glands, number of pinnae > 7 and the funicle half–fully encircling the seed. Section Botrycephalae requires redefinition.

scholarly journals Revision of the poorly known Neotropical butterfly genus Zischkaia Forster, 1964 (Lepidoptera, Nymphalidae, Satyrinae), with descriptions of nine new species

2019 ◽  
Author(s):  
Shinichi Nakahara ◽  
Thamara Zacca ◽  
Fernando M.S. Dias ◽  
Diego R. Dolibaina ◽  
Lei Xiao ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Dna Sequence ◽  
Sequence Data ◽  
Taxonomic Revision ◽  
Morphological Characters ◽  
South American ◽  
Dna Barcodes ◽  
Dna Sequence Data

We provide the first comprehensive taxonomic revision of the poorly known South American butterfly genus Zischkaia Forster, 1964, hitherto regarded as including three described species. A phylogenetic analysis based on DNA sequence data shows that Zischkaia is monophyletic and consists of two morphologically diagnosable clades. Morphological characters and DNA ‘barcodes’ support the recognition of twelve species in the genus, a significant increase even for the relatively poorly studied subtribe Euptychiina. Consequently, nine new species are described and named herein, including Z. arctoa Nakahara, sp. nov., Z. chullachaki Nakahara & Zacca, sp. nov., Z. baku Zacca, Dolibaina & Dias, sp. nov., Z. arenisca Nakahara, Willmott & Hall, sp. nov., Z. argyrosflecha Nakahara, L. Miller & Huertas, sp. nov., Z. abanico Nakahara & Petit, sp. nov., Z. josti Nakahara & Kleckner, sp. nov., Z. mielkeorum Dolibaina, Dias & Zacca, sp. nov. and Z. warreni Dias, Zacca & Dolibaina, sp. nov. In addition, a neotype is designated for Satyrus pacarus Godart, [1824], and lectotypes are designated for Euptychia amalda Weymer, 1911, Euptychia fumata Butler, 1867 and Euptychia saundersii Butler, 1867.

Three new species of Schistonchus (Aphelenchoididae) from the Ficus subgenus Sycomorus (Moraceae) in northern Australia

Nematology ◽  
2013 ◽  
Vol 15 (3) ◽  
pp. 347-362 ◽  
Author(s):  
Kerrie A. Davies ◽  
Faerlie Bartholomaeus ◽  
Natsumi Kanzaki ◽  
Weimin Ye ◽  
Robin M. Giblin-Davis
Keyword(s):  
New Species ◽  
Dna Sequence ◽  
Excretory Pore ◽  
Sequence Data ◽  
Morphological Characters ◽  
Dna Sequence Data ◽  
Medium Length ◽  
Eastern Australia ◽  
Pore Opening ◽  
Three New Species

Three new species of Schistonchus were recovered from sycones of Ficus racemosa, F. hispida and F. variegata (Moraceae Subgenus Sycomorus, Section Sycomorus) from the Cairns region in north-eastern Australia. Schistonchus baculum sp. n. is described from F. racemosa and F. hispida and is differentiated from other species of Schistonchus by a combination of morphological characters including having males with a walking-stick shape, excretory pore opening at the anterior end of the metacorpus, a long post-uterine sac, rose-thorn-shaped spicules, no gubernaculum, two pairs of subventral papillae on the tail, DNA sequence data, and apparent biogeographical range. Schistonchus fleckeri sp. n. is described from F. racemosa, F. hispida and F. variegata and is differentiated by a combination of morphological characters, including a C-shaped female and C-shaped to spiral males, the excretory pore opening near the lips, a short to medium length post-uterine sac, slender sickle-shaped spicules with a reduced rostrum, no gubernaculum, three pairs of subventral papillae on the tail, and apparent biogeographical range. Schistonchus cassowaryi sp. n. is described from F. variegata and is differentiated by a combination of morphological characters, including having C-shaped males and females, a posterior excretory pore situated posterior to the nerve ring, a short to medium length post-uterine sac, rose-thorn-shaped spicules, three pairs of subventral papillae on the tail (one adcloacal, one at mid-tail near lateral, and one near the tip), DNA sequence data, and apparent biogeographical range.

Revised circumscription of Nothofagus and recognition of the segregate genera Fuscospora, Lophozonia, and Trisyngyne (Nothofagaceae)

Phytotaxa ◽  
2013 ◽  
Vol 146 (1) ◽  
pp. 1 ◽  
Author(s):  
PETER B. HEENAN ◽  
ROB D. SMISSEN
Keyword(s):  
Phylogenetic Analysis ◽  
South America ◽  
Papua New Guinea ◽  
New Genus ◽  
New Caledonia ◽  
Sequence Data ◽  
Morphological Characters ◽  
New Combinations ◽  
Southern South America ◽  
Dna Sequence Data

The generic taxonomy of the Nothofagaceae is revised. We present a new phylogenetic analysis of morphological characters and map these characters onto a recently published phylogenetic tree obtained from DNA sequence data. Results of these and previous analyses strongly support the monophyly of four clades of Nothofagaceae that are currently treated as subgenera of Nothofagus. The four clades of Nothofagaceae are robust and well-supported, with deep stem divergences, have evolutionary equivalence with other genera of Fagales, and can be circumscribed with morphological characters. We argue that these morphological and molecular differences are sufficient for the four clades of Nothofagaceae to be recognised at the primary rank of genus, and that this classification will be more informative and efficient than the currently circumscribed Nothofagus with four subgenera.        Nothofagus is recircumscribed to include five species from southern South America, Lophozonia and Trisyngyne are reinstated, and the new genus Fuscospora is described. Fuscospora and Lophozonia, with six and seven species respectively, occur in New Zealand, southern South America and Australia. Trisyngyne comprises 25 species from New Caledonia, Papua New Guinea and Indonesia. New combinations are provided where necessary in each of these genera.

scholarly journals Phylogenetic Analysis of a ‘Jewel Orchid’ Genus Goodyera (Orchidaceae) Based on DNA Sequence Data from Nuclear and Plastid Regions

PLoS ONE ◽  
2016 ◽  
Vol 11 (2) ◽  
pp. e0150366 ◽  
Author(s):  
Chao Hu ◽  
Huaizhen Tian ◽  
Hongqing Li ◽  
Aiqun Hu ◽  
Fuwu Xing ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Dna Sequence ◽  
Sequence Data ◽  
Dna Sequence Data ◽  
Jewel Orchid

scholarly journals Characterization of an unusually conserved AluI highly reiterated DNA sequence family from the honeybee, Apis mellifera.

Genetics ◽  
1993 ◽  
Vol 134 (4) ◽  
pp. 1195-1204
Author(s):  
S Tarès ◽  
J M Cornuet ◽  
P Abad
Keyword(s):  
Apis Mellifera ◽  
Dna Sequence ◽  
Dna Sequences ◽  
Sequence Data ◽  
Sequence Divergence ◽  
Repeated Sequence ◽  
Consensus Sequences ◽  
Dna Sequence Data ◽  
Repeat Class ◽  
Honeybee Subspecies

Abstract An AluI family of highly reiterated nontranscribed sequences has been found in the genome of the honeybee Apis mellifera. This repeated sequence is shown to be present at approximately 23,000 copies per haploid genome constituting about 2% of the total genomic DNA. The nucleotide sequence of 10 monomers was determined. The consensus sequences is 176 nucleotides long and has an A + T content of 58%. There are clusters of both direct and inverted repeats. Internal subrepeating units ranging from 11 to 17 nucleotides are observed, suggesting that it could have evolved from a shorter sequence. DNA sequence data reveal that this repeat class is unusually homogeneous compared to the other class of invertebrate highly reiterated DNA sequences. The average pairwise sequence divergence between the repeats is 2.5%. In spite of this unusual homogeneity, divergence has been found in the repeated sequence hybridization ladder between four different honeybee subspecies. Therefore, the AluI highly reiterated sequences provide a new probe for fingerprinting in A. m. mellifera.

A new species of big-headed, fanged dicroglossine frog (Genus Limnonectes) from Thailand

Zootaxa ◽  
2008 ◽  
Vol 1807 (1) ◽  
pp. 26 ◽  
Author(s):  
DAVID S. McLEOD
Keyword(s):  
New Species ◽  
Dna Sequence ◽  
Sequence Data ◽  
Sequence Divergence ◽  
Type Material ◽  
Base Pairs ◽  
Dna Sequence Data ◽  
16S Gene ◽  
A New Species

A new species of the dicroglossine genus Limnonectes from eastern Thailand and its tadpole are described. Analysis of DNA sequence data from 2518 base-pairs of the mitochondrial 12S and 16S gene regions places the species within the complex of frogs currently referred to as Limnonectes kuhlii and demonstrates it to be a separate lineage (>18% sequence divergence from type-material of L. kuhlii from Java). The new species differs from L. kuhlii by having nuptial pads, a greater snout–vent length, and different relative finger lengths than specimens from Java. It has more extensive toe webbing, a different arrangement of nuptial pads, and a greater snout–vent length than Limnonectes laticeps. The new species, which lacks vocal slits, also can be distinguished from the morphologically similar Limnonectes namiyei from Japan, which possesses vocal slits.

Revision of Batrachospermum sections Acarposporophytum and Aristata (Batrachospermales, Rhodophyta) with the establishment of the new genera Acarposporophycos and Visia

Phytotaxa ◽  
2019 ◽  
Vol 395 (2) ◽  
pp. 51 ◽  
Author(s):  
ORLANDO NECCHI JR ◽  
AURO GARCIA FILHO ◽  
MONICA O. PAIANO
Keyword(s):  
Dna Sequence ◽  
Sequence Data ◽  
Morphological Characteristics ◽  
Sequence Divergence ◽  
Morphological Evidence ◽  
Similar Species ◽  
Type Specimens ◽  
Generic Level ◽  
Dna Sequence Data ◽  
Cell Layers

Sections of the paraphyletic genus Batrachospermum have been recently investigated using molecular (DNA sequence data) and morphological evidence. Some sections have been recognized as distinct genera in order to resolve paraphyly. Batrachospermum species of sections Acarposporophytum and Aristata are showed to form well-supported clades and, in this study, we propose to raise them to the generic level, Acarposporophycos gen. nov. and Visia gen. nov., respectively. In addition, we re-evaluated the characters used to circumscribe species by reexamining type specimens as well as new collections. Acarposporophycos, with the sole species A. brasiliensis, is characterized by the lack of carposporophytic stage, with the fertilized carpogonia germinating to form directly the filaments of the ‘Chantransia’ stage on the gametophyte. Of the five previously accepted species in the genus Visia, we recognize four species: V. cayennensis—type species (synonym Batrachospermum beraense), V. cylindrocellularis, V. longiarticulata and V. turgida. The species are circumscribed on the basis of morphological characteristics (shape and cell layers of primary fascicles, occurrence of secondary fascicles, post-fertilization development of carpogonia) and DNA sequence data (rbcL and COI-5P). Specimens described as Visia cayennensis from Australia and Brazil had a high sequence divergence in comparison to those from or near the type locality (French Guiana), and are here referred to as Visia spp. Further studies are recommended to better discriminate these morphologically similar species on a broad geographical scale and define their status at the species level. Descriptions, identification key and photomicrographs are presented for each recognized species.

scholarly journals Liparis wenshanensis, a new orchid species from China: Evidence from morphological and molecular analyses

Phytotaxa ◽  
2015 ◽  
Vol 204 (4) ◽  
pp. 253 ◽  
Author(s):  
YONG-YU SU ◽  
YI-LANG HUANG ◽  
LI-JUN CHEN ◽  
PEI-WEN ZHANG ◽  
Zhong-Jian Liu ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Dna Sequence ◽  
Sequence Data ◽  
Detailed Comparison ◽  
Distinct Species ◽  
Systematic Position ◽  
Orchid Species ◽  
Molecular Analyses ◽  
Dna Sequence Data

A new orchid species, Liparis wenshanensis, discovered in Yunnan, China is described and illustrated in this study based on morphological and molecular analyses. A detailed comparison between the newly discovered orchid and other members of the genus, Liparis, was conducted. The new plant is characterized by the combination of the following features: a long rachis with 45 to 55 flowers; white sepals, petals and column; a greenish lip with a purplish center; strongly recurved and revolute dorsal sepals and petals; strongly recurved, oblong lateral sepals; a cordate lip that is strongly deflexed below the middle, with a two-lobed apex and a two-lobed callus at the base; an arcuate column with a lamella extending along the center almost to the stigma, and with a pair of broad wings toward the apex. These features distinguish the new orchid from all other known species of Liparis. We proceeded to a phylogenetic analysis to ascertain the systematic position of this enigmatic species. Molecular analyses based on nuclear ribosomal ITS and plastid matK DNA sequence data supports the recognition of L. wenshanensis as a distinct species.

Sign in / Sign up

Export Citation Format

Share Document