U.S. flag

An official website of the United States government

PubAg

Main content area

You searched for: Subject "phylogeny" Remove constraint Subject: "phylogeny" Text Availability Citation in PubAg Remove constraint Text Availability: Citation in PubAg
Start Over

Search

55,243  Search Results

« Previous | 1 - 20 of 55,243 |
Number of results to display per page

Search Results

1. The robustness of the chaos game representation to mutations and its application in free-alignment methods

Author:
Kania, Adrian; Sarapata, Krzysztof
Source:
Genomics 2021 v.113 no.3 pp. 1428-1437
ISSN:
0888-7543
Subject:
phylogeny,   etc   ; bioinformatics; genomics;     Show all 3 Subjects
Abstract:
... Numerical representation of biological sequences plays an important role in bioinformatics and has many practical applications. One of the most popular approaches is the chaos game representation. In this paper, the authors propose a novel look into chaos game construction - an analytical description of this procedure. This type enables to build more general number sequences using different weight ...
DOI:
10.1016/j.ygeno.2021.03.015

2. Polyploid phylogenetics

Author:
Rothfels, Carl J.
Source:
Thenew phytologist 2021 v.230 no.1 pp. 66-72
ISSN:
0028-646X
Subject:
phylogeny,   etc   ; polyploidy; species diversity;     Show all 3 Subjects
Abstract:
... Polyploidy is a dominant feature of extant plant diversity. However, major research questions, including whether polyploidy is important to long‐term evolution or is just ‘evolutionary noise’, remain unresolved due to difficulties associated with the generation and analysis of data from polyploid lineages. Many of these difficulties have been recently overcome, such that it is now often relatively ...
DOI:
10.1111/nph.17105

3. Molecular data affirming a new occurrence of Encalypta streptocarpa (Encalyptaceae, Bryophyta) in Central China

Author:
Yi, Yan-Jun; Xiao, Xiao-Xuan; Wu, Lin; He, Si
Source:
Herzogia 2021 v.33 no.2 pp. 309-318
ISSN:
0018-0971
Subject:
phylogeny,   etc   ; Bryophyta; China;     Show all 3 Subjects
Abstract:
... Yi, Y.-J., Xiao, X.-X., Wu, L. & He, S. 2020. Molecular data affirming a new occurrence of Encalypta streptocarpa (Encalyptaceae, Bryophyta) in Central China. – Herzogia 33: 309 –318. Encalypta streptocarpa is herein newly reported from Central China, a rare occurrence of this species in Asia. A morphological study and phylogenetic analyses based on rps4 and trnL-F sequences affirm the taxonomic i ...
DOI:
10.13158/heia.33.2.2020.309

4. Further taxonomic notes on vespinae (hymenoptera: vespidae)

Author:
Carpenter, James M.
Source:
Entomologica americana 2021 v.126 no.1-4 pp. 108-111
ISSN:
1947-5144
Subject:
phylogeny,   etc   ; Dolichovespula; lectotypes;     Show all 3 Subjects
Abstract:
... Lectotypes are designated for two species of Vespinae: Dolichovespula arctica (Rohwer) and Vespula intermedia (du Buysson). Dolichovespula albida (Sladen) is diagnostically distinct from D. norwegica (Fabricius), therefore it is a distinct phylogenetic species. This is also the case for Vespula intermedia versus V. rufa (Linnaeus). ...
DOI:
10.1664/1947-5136-126.1.108

5. Heuristics for unrooted, unranked, and ranked anomaly zones under birth-death models

Author:
Kim, Anastasiia; Degnan, James H.
Source:
Molecular phylogenetics and evolution 2021 v.161 pp. 107162
ISSN:
1055-7903
Subject:
phylogeny,   etc   ; genes; probability; topology; trees;     Show all 5 Subjects
Abstract:
... Species trees that can generate a nonmatching gene tree topology that is more probable than the topology matching the species tree are said to be in an anomaly zone. We introduce some heuristic approaches to infer whether species trees are in anomaly zones when it is difficult or impossible to compute the entire distribution of gene tree topologies. Here, probabilities of unrooted, unranked, and r ...
DOI:
10.1016/j.ympev.2021.107162

6. Collapsing dubiously resolved gene-tree branches in phylogenomic coalescent analyses

Author:
Simmons, Mark P.; Gatesy, John
Source:
Molecular phylogenetics and evolution 2021 v.158 pp. 107092
ISSN:
1055-7903
Subject:
phylogeny,   etc   ; data collection; genes; topology;     Show all 4 Subjects
Abstract:
... In two-step coalescent analyses of phylogenomic data, gene-tree topologies are treated as fixed prior to species-tree inference. Although all gene-tree conflict is assumed to be caused by lineage sorting when applying these methods, in empirical datasets much of the conflict can be caused by estimation error. Weakly supported and even arbitrarily resolved clades are important sources of this estim ...
DOI:
10.1016/j.ympev.2021.107092

7. Neotypification of Rhipsalis rhombea (Rhipsalideae, Cactaceae) and Its Taxonomic History

Author:
Bauer, Ralf; Korotkova, Nadja
Source:
Haseltonia 2021 v.27 no.1 pp. 95-101
ISSN:
1938-2898
Subject:
phylogeny,   etc   ; Rhipsalis; neotypes; plastid DNA;     Show all 4 Subjects
Abstract:
... Rhipsalis rhombea is common in living collections, but the name has been used ambiguously in recent decades and has never been typified. We review the taxonomic history of this species and conclude that the name can be applied unambiguously. We therefore establish a neotype for Rhipsalis rhombea Pfeiff. and give a detailed morphological characterization of the species. In addition, we have generat ...
DOI:
10.2985/026.027.0111

8. Mouthparts and associated sensilla of adult Panorpidae (Insecta: Mecoptera)

Author:
Wang, Xiao-Yan; Ma, Na; Hua, Bao-Zhen
Source:
Zoologischer Anzeiger 2021 v.291 pp. 34-44
ISSN:
0044-5231
Subject:
phylogeny,   etc   ; ; Panorpa; palps; sensilla; taxonomy;     Show all 6 Subjects
Abstract:
... Adult mouthparts and associated sensilla were investigated for five genera of Panorpidae in Mecoptera by scanning electron microscopy, including Panorpa liui Hua, 1997, Dicerapanorpa magna (Chou, 1981), Cerapanorpa dubia (Chou & Wang, 1981), Neopanorpa longiprocessa Hua & Chou, 1997 and Furcatopanorpa longihypovalva (Hua & Cai, 2009). The mouthparts are of the typical mandibulate type, consisting ...
DOI:
10.1016/j.jcz.2021.02.004

9. Altered Cogs of the Clock: Insights into the Embryonic Etiology of Spondylocostal Dysostosis

Author:
Nóbrega, Ana; Maia-Fernandes, Ana C.; Andrade, Raquel P.
Source:
Journal of developmental biology 2021 v.9 no.1
ISSN:
2221-3759
Subject:
phylogeny,   etc   ; etiology; humans; skeleton; therapeutics;     Show all 5 Subjects
Abstract:
... Spondylocostal dysostosis (SCDO) is a rare heritable congenital condition, characterized by multiple severe malformations of the vertebrae and ribs. Great advances were made in the last decades at the clinical level, by identifying the genetic mutations underlying the different forms of the disease. These were matched by extraordinary findings in the Developmental Biology field, which elucidated t ...
DOI:
10.3390/jdb9010005

10. How Many Sipunculan Species Are Hiding in Our Oceans?

Author:
Schulze, Anja; Kawauchi, Gisele Y.
Source:
Diversity 2021 v.13 no.2
ISSN:
1424-2818
Subject:
phylogeny,   etc   ; Annelida; dissection; species diversity;     Show all 4 Subjects
Abstract:
... Sipuncula, long considered a separate phylum, are now commonly included in the Annelida based on phylogenomic analyses. The sipunculan body consists of an unsegmented trunk and a retractable introvert, usually with a set of tentacles at its anterior end. Unlike other annelids, they have no chaetae, but the introvert is often adorned with proteinaceous hooks that can be important taxonomic characte ...
DOI:
10.3390/d13020043

11. Descripción del Exocorion de Tres Especies de Coeini

Author:
González, Erick Campos; Nieves-Uribe, Sandra; Llorente-Bousquets, Jorge
Source:
TheSouthwestern entomologist 2021 v.45 no.4 pp. 1091-1120
ISSN:
0147-1724
Subject:
phylogeny,   etc   ; chorion; color; entomologists; Mexico;     Show all 5 Subjects
Abstract:
... We described and compared the exochorion of three species of the tribe Coeini, with specimens from Mexico: Historis odius dious, Colobura dirce dirce, and Smyrna blomfildia datis. We characterized the main structural features of the exochorion: color, shape, size, ‘ornamentation’, differentiation on the micropylar, perimicropylar, and transition zones, as well as equatorial and basal structures, b ...
DOI:
10.3958/059.045.0427

12. A broadly resolved molecular phylogeny of New Zealand cheilostome bryozoans as a framework for hypotheses of morphological evolution

Author:
Orr, R.J.S.; Di Martino, E.; Gordon, D.P.; Ramsfjell, M.H.; Mello, H.L.; Smith, A.M.; Liow, L.H.
Source:
Molecular phylogenetics and evolution 2021 v.161 pp. 107172
ISSN:
1055-7903
Subject:
phylogeny,   etc   ; Bryozoa; bioinformatics; fauna; mitochondria; New Zealand;     Show all 6 Subjects
Abstract:
... Larger molecular phylogenies based on ever more genes are becoming commonplace with the advent of cheaper and more streamlined sequencing and bioinformatics pipelines. However, many groups of inconspicuous but no less evolutionarily or ecologically important marine invertebrates are still neglected in the quest for understanding species- and higher-level phylogenetic relationships. Here, we allevi ...
DOI:
10.1016/j.ympev.2021.107172

13. Molecular data and phylogenetic analysis of Myxobolus pseudonobilis n. sp. infecting the gill filaments of silver carp, Hypophthalmichthys molitrix Valenciennes, 1844

Author:
Xiang, Yao; Zhang, Jinye; Zhao, Yuanjun
Source:
Parasitology international 2021 v.83 pp. 102314
ISSN:
1383-5769
Subject:
phylogeny,   etc   ; Hypophthalmichthys molitrix; Myxobolus; parasitology; spores; China;     Show all 6 Subjects
Abstract:
... In the present study, we combined morphological and phylogenetic methods to characterize Myxobolus pseudonobilis n. sp. infecting Hypophthalmichthys molitrix Valenciennes, 1844 from Chongqing, China. The morphology and molecular characteristics of M. pseudonobilis n. sp. were distinct from those of other previously described Myxobolus species. Mature myxospores were ovoid in frontal view with spor ...
DOI:
10.1016/j.parint.2021.102314

14. Transmission dynamics and molecular characterization of HIV-1 epidemic among therapeutic failure patients in Santa Catarina state, southern Brazil

Author:
Fritsch, Hegger M.; Tanuri, Amilcar; Pinto, Aguinaldo R.; Gräf, Tiago
Source:
Infection, genetics, and evolution 2021 v.92 pp. 104854
ISSN:
1567-1348
Subject:
phylogeny,   etc   ; databases; genotyping; infection; mortality; therapeutics; Brazil;     Show all 7 Subjects
Abstract:
... The HIV-1 epidemic in southern Brazil is mostly caused by subtype C, which contrasts the dominance of subtype B in the other regions of the country. Santa Catarina (SC), although the smallest state in the southern region, presents one of the highest incidences and mortality rates in Brazil due to AIDS. This work investigated the HIV-1 molecular diversity and phylogenetic transmission networks in S ...
DOI:
10.1016/j.meegid.2021.104854

15. Decoding the genome of superior chapatti quality Indian wheat variety ‘C 306’ unravelled novel genomic variants for chapatti and nutrition quality related genes

Author:
Mishra, Ankita; Singh, Akshay; Mantri, Shrikant; Pandey, Ajay K.; Garg, Monika; Deshmukh, Rupesh; Sonah, Humira; Kandoth, Pramod Kaitheri; Sharma, Tilak Raj; Roy, Joy
Source:
Genomics 2021 v.113 no.4 pp. 1919-1929
ISSN:
0888-7543
Subject:
phylogeny,   etc   ; DNA; genes; genomics; nutrition; wheat;     Show all 6 Subjects
Abstract:
... An Indian wheat variety, ‘C 306’ has good chapatti quality, which is controlled by multiple genes that have not been explored. We report the high quality de novo assembled genome of ‘C 306’ by combining short and long read sequencing data. The hybrid assembly covered 93% of gene space and identified about 142 K coding genes, 34% repetitive DNA and ~ 501 K SSR motifs. The phylogenetic analysis of a ...
DOI:
10.1016/j.ygeno.2021.03.031

16. Amphibian responses in experimental thermal gradients: Concepts and limits for inference

Author:
Navas, Carlos A.; Gouveia, Sidney F.; Solano-Iguarán, Jaiber J.; Vidal, Marcela A.; Bacigalupe, Leonardo D.
Source:
Comparative biochemistry and physiology 2021 v.254 pp. 110576
ISSN:
1096-4959
Subject:
phylogeny,   etc   ; amphibians; biochemistry; models; ontogeny; thermoregulation;     Show all 6 Subjects
Abstract:
... The interpretation of thermal-gradient data depends on the behavioral drives reported or assumed, and on the underlying behavioral models explaining how such drives operate. The best-known example is positive thermotaxis, a thermoregulatory behavioral drive frequently linked to a dual set-point model of thermoregulation around a target range. This behavioral drive is often assumed as dominant amon ...
DOI:
10.1016/j.cbpb.2021.110576

17. Occurrence of flavonoids in different Lamiaceae taxa for a preliminary study on their evolution based on phytochemistry

Author:
Frezza, Claudio; Venditti, Alessandro; Giuliani, Claudia; Foddai, Sebastiano; Cianfaglione, Kevin; Maggi, Filippo; Fico, Gelsomina; Guiso, Marcella; Nicoletti, Marcello; Bianco, Armandodoriano; Serafini, Mauro
Source:
Biochemical systematics and ecology 2021 v.96 pp. 104247
ISSN:
0305-1978
Subject:
phylogeny,   etc   ; Lamiaceae; chemotaxonomy; ecology; flavonoids; iridoids;     Show all 6 Subjects
Abstract:
... In this work, the continuation of the study of the plant evolution based on phytochemistry was presented. Flavonoids were used to draw a Sporne evolution diagram of selected Lamiaceae taxa. From a phytochemical evolution standpoint, results showed similarities and differences with regard to the previous work on iridoids. In addition, analogies and diversities from the phylogenetic tree based on mo ...
DOI:
10.1016/j.bse.2021.104247

18. Origin and diversification of ECERIFERUM1 (CER1) and ECERIFERUM3 (CER3) genes in land plants and phylogenetic evidence that the ancestral CER1/3 gene resulted from the fusion of pre-existing domains

Author:
Chaudhary, Komal; Geeta, R.; Panjabi, Priya
Source:
Molecular phylogenetics and evolution 2021 v.159 pp. 107101
ISSN:
1055-7903
Subject:
phylogeny,   etc   ; Archaea; Charophyta; Miozoa; ancestry; genes;     Show all 6 Subjects
Abstract:
... ECERIFERUM1 (CER1) and ECERIFERUM3 (CER3) are key genes in synthesis of alkanes, a major component of cuticular waxes in land plants. The genes share extensive similarity, including the N-terminal (ERG3/FAH) and C-terminal (WAX2) domains. This study, traces the origin, evolutionary history, phylogenetic relationships and variation in copy number of the two genes within and beyond the Viridiplantae ...
DOI:
10.1016/j.ympev.2021.107101

19. A phylogenomic supermatrix of Galliformes (Landfowl) reveals biased branch lengths

Author:
Kimball, Rebecca T.; Hosner, Peter A.; Braun, Edward L.
Source:
Molecular phylogenetics and evolution 2021 v.158 pp. 107091
ISSN:
1055-7903
Subject:
phylogeny,   etc   ; Galliformes; chickens; exons; introns; mitochondria; models;     Show all 7 Subjects
Abstract:
... Building taxon-rich phylogenies is foundational for macroevolutionary studies. One approach to improve taxon sampling beyond individual studies is to build supermatricies of publicly available data, incorporating taxa sampled across different studies and utilizing different loci. Most existing supermatrix studies have focused on loci commonly sequenced with Sanger technology (“legacy” markers, suc ...
DOI:
10.1016/j.ympev.2021.107091

20. Bryophytes are not early diverging land plants

Author:
McDaniel, Stuart F.
Source:
Thenew phytologist 2021 v.230 no.4 pp. 1300-1304
ISSN:
0028-646X
Subject:
phylogeny,   etc   ; case studies; literacy; plant taxonomy;     Show all 4 Subjects
Abstract:
... Phylogenetic trees have permeated biology. However, an understanding of how to interpret phylogenies has lagged behind, notably in publications outside of evolutionary biology. Here I argue that some language commonly used in plant systematics has contributed to the confusion by describing phylogenetic trees using intuitive but misleading terms reminiscent of Aristotle's Scala Naturae. These terms ...
DOI:
10.1111/nph.17241