scholarly journals Biosystematic study of the genus Lallemantia (Lamiaceae): species delimitation and relationship

2020 ◽  
Vol 63 (2) ◽  
pp. 157-168
Author(s):  
Fahimeh Koohdar ◽  
Masoud Sheidai
Keyword(s):  
Phylogenetic Trees ◽  
Molecular Study ◽  
Morphological Characters ◽  
Issr Markers ◽  
Evolutionary Analysis ◽  
Species Relationship ◽  
Beast Analysis ◽  
Cpdna Markers ◽  
Components Analysis ◽  
Relationship Of

Lallemantia (Lamiaceae) is a small genus with 5 species. In general, little biosystematics and molecular study has been performed on the genus Lallemantia. Moreover, the studies used only some of the species; none of them has considered all 5 species as a whole in one specific approach. Therefore, the species inter-relationship or nexus in the genus is not thoroughly probed. The present study investigated the molecular phylogeny and species relationship of all five species in the genus Lallemantia, using ribosomal protein L16 and the multilocus ISSR markers. It also compared their morphometric, anatomical and seed results. The species were efficaciously delimited by the morphological, anatomical and seed characters, as well as by ISSR and cpDNA markers. The PCA (Principal components analysis) plot of the species based upon the morphological characters, the MDS (Multidimensional Scaling) plot of the species based on the nutlet and anatomical characters, the NJ (neighbor joining) tree plot of ISSR dataand the ML tree of cpDNA revealed closer affinity between L. iberica and L. canescens and L. peltata was placed at some distance from these species. The phylogenetic trees displayed monophyly of the genus Lallemantia. The Bayesian Evolutionary Analysis by Sampling Trees (BEAST) analysis unveiled that the studied Lallemantia species started to diverge about 25 million years ago.

And then came molecular phylogenetics—Reactions to a monographic study of Hypericum (Hypericaceae)

Phytotaxa ◽  
2016 ◽  
Vol 255 (3) ◽  
pp. 181 ◽  
Author(s):  
NORMAN K.B. ROBSON
Keyword(s):  
Phylogenetic Trees ◽  
Molecular Phylogenetics ◽  
New World ◽  
Molecular Study ◽  
Morphological Characters ◽  
Genetic Switch ◽  
Traditional Treatment ◽  
Single Clade ◽  
Molecular Phylogenetic ◽  
Floral Syndrome

Completion of a detailed monograph of Hypericum using traditional methods has stimulated the publication of phylogenetic treatments of the genus using molecular methods. The relationships thereby revealed differ from those of the traditional account in several ways that are discussed here.       A key point of conflict concerns taxa that share a specific set of morphological characters, i.e. the ‘Elodes’ syndrome (pseudotubular corolla, sterile stamen fascicles, stamen filaments ± united in the fascicle and sometimes petal appendages), which was found to be paraphyletic in each molecular study. The various groups with this syndrome were shown to have arisen from various parts of Hypericum, apparently suddenly, probably as the result of a genetic switch, the action of which can also be reversed. The formerly segregated genera with this floral syndrome should therefore all be re-incorporated in Hypericum. This necessitates the re-establishment of one section, namely Hypericum sect. Elodea, and recognition of two new sections within Hypericum, namely Hypericum sect. Lianthus and Hypericum sect. Thornea, which are proposed here.       The remaining species have resolved in various places in recent molecular phylogenetic trees that differ from each other and from the classification adopted in the monograph. In particular, in molecular results the herbaceous species with ‘3’ (i.e. 2+2+1) stamen fascicles all form a single clade; whereas, in the traditional treatment adopted in the monograph, they form three distinct, distantly related groups.            In light of recent molecular studies, Hypericum is now interpreted to comprise two distinct groups (respectively mainly Old World and mainly New World) that differ in the presence or absence of dark (hypericin-containing) glands and in the arrangement of the stamen fascicles. These two clades are described as subgenera, with the New World clade named Hypericum subgenus Brathys. By drawing attention to this grouping, the molecular work has improved on the monograph.

Phylogeny and taxonomy of Meeboldia, Sinodielsia and their relatives (Apiaceae: Apioideae) inferred from nrDNA ITS, plastid DNA intron (rpl16 and rps16) sequences and morphological characters

Phytotaxa ◽  
2021 ◽  
Vol 482 (2) ◽  
pp. 121-142
Author(s):  
WEI GOU ◽  
XIAN-LIN GUO ◽  
SONG-DONG ZHOU ◽  
XING-JIN HE
Keyword(s):  
Phylogenetic Trees ◽  
Morphological Characteristics ◽  
Deep Understanding ◽  
Plastid Dna ◽  
Morphological Characters ◽  
Nuclear Ribosomal Dna ◽  
Nrdna Its ◽  
Relationship Of ◽  
The Relationship ◽  
Ribosomal Dna Sequence

Meeboldia H.Wolff, Sinodielsia H.Wolff and their relatives (Apiaceae: Apioideae) are similar in morphology, of which taxonomic treatments were controversial. In this study, the nuclear ribosomal DNA sequence (ITS) and two plastid DNA markers (rps16 and rpl16) were applied to reconstruct phylogenetic trees. The results demonstrated that Meeboldia and Sinodielsia formed a monophyletic group in phylogenetic trees and their highly similar morphological characteristics in taproot, basal leaves, calyx teeth, ribs, and vittae of fruits also confirmed their close relationships. Consequently, the following results were obtained: (1) Sinodielsia should be merged into Meeboldia; (2) Sinodielsia delavayi was confirmed conspecific with Meeboldia yunnanensis and renamed as Meeboldia delavayi (Franch.) W.Gou & X.J.He; (3) Sinodielsia thibetica was away from other Sinodielsia species; (4) Sinodielsia microloba was a member of Meeboldia and renamed as Meeboldia microloba (Kljuykov) W.Gou & X.J.He; (5) The name of Sinodielsia clade was suggested to be replaced by Hymenidium clade. We applied multiple approaches to explore the relationship of morphologically similar taxa, which will facilitate a deep understanding of taxonomy and species diversity of Apiaceae.

Phylogenetic position of the genera Caryandoides, Paratoacris, Fer and Longchuanacris (Orthoptera:Acrididae) revealed by complete mitogenome sequences

2021 ◽  
Vol 35 (7) ◽  
pp. 725
Author(s):  
Xiang Zeng ◽  
Haiyang Xu ◽  
Jingxiao Gu ◽  
Benyong Mao ◽  
Zhilin Chen ◽  
...  
Keyword(s):  
Next Generation Sequencing ◽  
Bayesian Inference ◽  
Phylogenetic Trees ◽  
Morphological Characters ◽  
Phylogenetic Position ◽  
Depth Study ◽  
Complete Mitogenome ◽  
Relationship Of ◽  
The Relationship ◽  
Generation Sequencing

Many taxa in the Acrididae have controversial phylogenetic positions. A typical example of such controversies is the phylogenetic positions of the genera Caryandoides, Paratoacris, Fer and Longchuanacris, as well as some other related taxa, which were placed in Oxyinae by some authors, but were considered members of the subfamily Catantopinae by others. In this study, the complete mitogenomes of nine species were sequenced using next-generation sequencing, the characteristics of the newly sequenced mitogenomes are presented briefly, and the phylogeny of the Oxyinae and Catantopinae are reconstructed using a selected dataset of mitogenome sequences under maximum likelihood and Bayesian inference frameworks. The results show that the four controversial genera were consistently assigned to the subfamily Oxyinae rather than Catantopinae in all phylogenetic trees deduced from different datasets under different frameworks, and this finding is entirely consistent with their morphological characters. Therefore, it is more appropriate to place them in Oxyinae rather than Catantopinae. In addition, the results from our analysis also confirm the membership of the genus Apalacris in Coptacrinae rather than Catantopinae, and indicate the uncertainty in the phylogenetic position of the genus Traulia, and a more in-depth study is necessary to resolve the relationship of Traulia with other catantopine groups or Coptacrinae.

scholarly journals About species relationship of Galium trifidum section Aparinoides in Asian Russia

2021 ◽  
Vol 20 (1) ◽  
pp. 352-356
Author(s):  
E. A. Pinzhenina
Keyword(s):  
Related Species ◽  
Morphological Characters ◽  
Morphological Features ◽  
Closely Related Species ◽  
Species Relationship ◽  
Relationship Of

The morphological features of representatives of the section Aparinoides (Rubiaceae) are presented. In AsianRussia, the section is represented by five species: Galium palustre, G. trifidum, G. baicalense, G. ruprechtii, G. brandegeei.It was revealed that closely related species of the Aparinoides section differ in the shape and pubescence of the leaf, inflorescence, pubescence of peduncles, the location of pedicels relative to the branches, the number of corolla lobes, the shapeof the corolla lobes, and sculpture of the mericarp pericarp. Morphological characters can be used to differentiate closelyrelated species of the Aparinoides section.

scholarly journals Molecular and morphological study of the genus Senecio L. (Asteraceae: Senecioneae) in Iran

Genetika ◽  
2018 ◽  
Vol 50 (2) ◽  
pp. 403-419
Author(s):  
Rosa Eftekharian ◽  
Masoud Sheidai ◽  
Farideh Attar ◽  
Zahra Noormohammadi ◽  
Somayyeh Ghasemzadeh-Baraki
Keyword(s):  
Phylogenetic Trees ◽  
Morphological Characters ◽  
Reticulate Evolution ◽  
Mazandaran Province ◽  
Species Relationship ◽  
Specific Hybridization ◽  
The Family ◽  
Molecular Phylogenetic ◽  
Phylogenetic Evolution ◽  
First Time

The genus Senecio (Asteraceae, Senecioneae) with about 1250 species is one of the largest genera in the family. Due to historical and present time inter-specific hybridization and reticulate evolution in the genus, the morphological and molecular phylogenetic evolution are disjunct. The genus contains 17 species belonging to four sections, sect. Crociseris, sect. Quadridentati, sect. Jacobaea and sect. Senecio, in Iran out of which, six are endemic. Therefore, the present study was performed with the aim to provide data on the above issues. In general, ISSR molecular markers could delimit the studied Senecio species and revealed the species relationships, but did not support any of the sections. The ITS and cp-DNA sequencing of six species of S. iranicus, S. vulcanicus, S. kotschyanus, S. paulsenii subsp. khorasanicus and S. joharchii were obtained for the first time. S-DIVA suggests three possible ancestral ranges, of Kordestan (A), Mazandaran (G), and West-Azarbayejan (D), for Sececio species in Iran. These areas are located in the western parts of Iran. Mazandaran province played important role in the speciation process that led to the formation of endemic Sececio species in the country, while, Kordestan and West-Azarbayejan are the main road for the entrance of Sececio species from Europe via neighboring countries. The morphological characters used could also delimit the four sections of the genus Senecio. However, ISSR, cp-DNA and nuclear genes sequences-based phylogenetic trees portrayed the species relationship much different from that of morphological dendrogram.

scholarly journals Anatomy study of the genus Cirsium Mill. in Iran

2018 ◽  
Vol 62 (1) ◽  
pp. 37-43
Author(s):  
Masoud Sheidai ◽  
Saeedeh Shojaei ◽  
Fahimeh Koohdar
Keyword(s):  
Gene Flow ◽  
Phylogenetic Relationship ◽  
Interspecific Hybrids ◽  
Molecular Study ◽  
Issr Markers ◽  
Ecological Conditions ◽  
Anatomical Characters ◽  
Relationship Of ◽  
Rapd And Issr ◽  
Molecular Characters

The genus Cirsium Mill. (Asteraceae) also known as plume thistles with about 250 perennial, biennial or rarely annual spiny species is a phylogenetically unresolved and paraphyletic genus. Cirsium species grow in different ecological conditions and tend to form interspecific hybrids. Some species are morphologically very similar and need to be delineated by additional anatomical and molecular characters. About 28 Cirsium species have been reported in Flora Iranica; they were classified in five sections. Taxonomic investigation of these species was confined to morphology and molecular study of RAPD and ISSR markers. The present study carried out anatomical investigation (leaf and stem characters) of Cirsium species in the country. PCoA analysis of anatomical characters could delimit the studied species and the grouping obtained was almost in agreement with morphological and sectional delineation of the genus. The results obtained are in agreement with several other investigations and all together suggestive of the continued gene flow and introgression between Cirsium species that make taxonomy and phylogenetic relationship of the species difficult.

New species and findings of Pagastia Oliver (Diptera: Chironomidae: Diamesinae) from Central Asia, with DNA barcoding of known species of the genus

Zootaxa ◽  
2021 ◽  
Vol 4951 (3) ◽  
pp. 559-570
Author(s):  
EUGENYI A.  MAKARCHENKO ◽  
ALEXANDER A. SEMENCHENKO ◽  
DMITRY M. PALATOV
Keyword(s):  
New Species ◽  
Central Asia ◽  
Cytochrome Oxidase ◽  
Phylogenetic Trees ◽  
Morphological Characters ◽  
Molecular Data ◽  
Adult Males ◽  
Cytochrome Oxidase Subunit ◽  
Oxidase Subunit ◽  
Coi Sequences

Chironomids of the genus Pagastia Oliver (Diamesinae, Diamesini) from the mountains of Central Asia are revised using both morphological characters and molecular data. Illustrated descriptions of the adult male Pagastia (P.) caelestomontana sp. nov. from Kirgizstan and Tajikistan, P. (P.) hanseni sp. nov. from Tajikistan, and record of a finding apparently a new species P. (P.) aff. lanceolata (Tokunaga) from Tajikistan as well as an updated a key to the determination of the adult males of all known species of Pagastia are provided. A phylogenetic framework is reconstructed based on two mitochondrial genes cytochrome oxidase subunit I (COI) sequences of 34 samples belonging to 7 species of the genus Pagastia and cytochrome oxidase subunit II (COII) available for most samples. Phylogenetic trees of some known species of the genus Pagastia were reconstructed using the combined dataset and Bayesian inference (BI) and Maximum Likelihood (ML) methods. The interspecific K2P distances between seven Pagastia species including P. (P.) caelestomontana sp. nov., P. (P.) hanseni sp. nov. and undescribed P. (P.) aff. lanceolata (Tokunaga) are 6.3–13.2 which corresponding to species level. 

Relationship of Religiosity to Death Anxiety of Middle-Aged Males

1984 ◽  
Vol 54 (3) ◽  
pp. 811-822 ◽  
Author(s):  
Ann M. Downey
Keyword(s):  
Principal Components Analysis ◽  
Principal Components ◽  
Death Anxiety ◽  
Control Variable ◽  
Fear Of Death ◽  
Curvilinear Relationship ◽  
Middle Aged ◽  
Probability Sample ◽  
Components Analysis ◽  
Relationship Of

The purpose of this study was to determine how religiosity was related to death anxiety among a group of middle-aged men. A non-probability sample of 237 male volunteers between the ages of 40 and 59 yr. of whom 88.7% were engaged in professional occupations completed a questionnaire composed of various research instruments. A single composite score for religiosity was obtained through a principal-components analysis of 13 items selected, adjusted, and compiled by Downey (1980) from various religiosity scales. Boyar's Fear of Death Scale assessed death anxiety, while “experience of death” was measured by three items and was utilized as a control variable in determining the association between religiosity and death anxiety. Analysis indicated that “experience of death” or the amount of contact the male has had with death was not related to death anxiety. Data did not support the prediction that those males who were less religious would exhibit higher scores on death anxiety than would those men who were more religious. Further analyses demonstrated a curvilinear relationship between religiosity and death anxiety. The middle-aged men who were moderately religious evidenced a significantly higher fear of death than the men who were either low or high in religiosity.

scholarly journals Relationships among cultivated peas and their wild relatives: Molecular and morphological characterization

2019 ◽  
Vol 48 (4) ◽  
pp. 1011-1019
Author(s):  
Fatih Hanci ◽  
Esra Cebeci
Keyword(s):  
Molecular Study ◽  
Morphological Characters ◽  
Morphological Characterization ◽  
Local Varieties ◽  
Ssr Loci ◽  
Taxonomic Groups ◽  
Clustering Pattern ◽  
Polymorphism Level ◽  
Different Sources ◽  
Simple Sequence

This study was conducted to determine relationship between some wild pea accessions (Pisum fulvum L., P. abyssinicum L., P. sativum var. elatius), local varieties (P. sativum var. sativum L. and P. sativum var. arvense L.) and commercial varieties “Boogie” and “Rondo”. The genetic diversity was evaluated with 14 simple sequence repeat markers and 50 morphological characters. The results of morphology indicated that, genotypes showed a clustering pattern based on the taxonomic groups when considering only flower characters and all morphological characters. During the molecular study, a total of 48 alleles were obtained. Used all primers showed polymorphism in accessions. The number of alleles varied between 2 - 6 among 14 SSR loci revealing the polymorphism level of markers. Similarity coefficient (Dice’s) ranged from 0.100 to 0.800 with an average of 0.378. A dendrogram grouped the 15 genotypes into two main clusters. This information can be utilized for genetic analysis, genotype identification from different sources and development of improved germplasm.

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