scholarly journals Vegetative and Leaf Anatomical Traits for Taxonomic Delimitation of Salacia L. In Sri Lanka

2021 ◽  
Vol 28 (2) ◽  
pp. 429-439
Author(s):  
WINS Senevirathne ◽  
PI Hettiarachchi ◽  
DMD Yakandawala
Keyword(s):  
Multivariate Analysis ◽  
Sri Lanka ◽  
Correlation Analysis ◽  
Molecular Data ◽  
New Combinations ◽  
Tropical Countries ◽  
Anatomical Data ◽  
Plant Taxon ◽  
Anatomical Characters ◽  
Vegetative Characters

Salacia comprises 200 species throughout the tropical countries. In Sri Lanka, five species of this genus S. chinensis, S. diandra, S. oblonga, S. reticulata and S. acuminatissima are recorded that are considered as the synonyms under S. diandra by Wadhwa in 1996 during the revision of genus. These species are very much similar in vegetative morphology and their flowering is irregular and rare. Due to these reasons, their proper identification and determination are difficult and identification of new combinations of taxonomic characters is necessary. A multivariate analysis was conducted for 98 distinct populations using 20 vegetative and 43 leaf anatomical characters including PCA, PCO, CA, SIMPER and correlation analysis. The results support the recognition of four phenetic groups, which corresponds to species S. chinensis, S. reticulata, S. oblonga and S. diandra. S. acuminatissima that was recognized by Kostermans (1992) was not supported by the analysis and formed a cluster together with S. diandra with no support as a separate cluster. The study failed to recognize any distinct vegetative characters to define these taxa but propose a combination of vegetative or leaf anatomical characters and also highlights the necessity of molecular data to supplement the vegetative and leaf anatomical data to resolve the ambiguity between the S. acuminatissima and S. diandra. Bangladesh J. Plant Taxon. 28(2): 429-439, 2021 (December)

Morphological and molecular characterisation of Aporcelaimellus simplex (Thorne & Swanger, 1936) Loof & Coomans, 1970 and a new concept for Aporcella Andrássy, 2002 (Dorylaimida: Aporcelaimidae)

Nematology ◽  
2013 ◽  
Vol 15 (2) ◽  
pp. 165-178 ◽  
Author(s):  
Sergio Álvarez-Ortega ◽  
Sergei A. Subbotin ◽  
Reyes Peña-Santiago
Keyword(s):  
Molecular Data ◽  
Evolutionary Tree ◽  
Valid Species ◽  
Molecular Characterisation ◽  
New Combinations ◽  
Terminal Portion ◽  
Significant Difference ◽  
European Populations ◽  
Emended Diagnosis

This contribution presents a study of Iberian and Californian populations of Aporcelaimellus simplex, including morphological, morphometric and molecular data. The species is characterised and distinguished by its lip region offset by an expansion, pars refringens vaginae absent, and conical tail with a small but distinct hyaline terminal portion. No significant difference exists between American and European populations. Molecular data and the derived evolutionary tree show a topology in which this species forms a well-supported group with members of Discolaiminae, far from other representatives of Aporcelaimellus. Putting special emphasis in the absence of pars refringens vaginae, A. simplex is transferred to the genus Aporcella. The taxonomy of this genus is revised in depth, with the proposal of an emended diagnosis, the provision of a list of 13 valid species (mostly new combinations from Aporcelaimellus) as well as a key to their identification and a compendium of their main morphometrics. Aporcella debruinae sp. n. is proposed for Aporcelaimellus papillatus apud de Bruin & Heyns, 1992.

Sinalliaria, a new genus of Brassicaceae from eastern China, based on morphological and molecular data

Phytotaxa ◽  
2014 ◽  
Vol 186 (4) ◽  
pp. 188 ◽  
Author(s):  
Ying-Ying Zhou ◽  
HONG-WEI ZHANG ◽  
JIANG-QIN HU ◽  
Xiao-Feng Jin
Keyword(s):  
Dna Sequences ◽  
New Genus ◽  
Eastern China ◽  
Distinct Group ◽  
Morphological Characters ◽  
Molecular Data ◽  
New Combinations ◽  
The Family ◽  
Morphological And Molecular Data ◽  
Seed Testa

Sinalliaria is described here as a new genus of the family Brassicaceae from eastern China, based on the morphological characters and molecular sequences. Sinalliaria differs from the related genus Orychophragmus in having basal leaves petiolate, simple or rarely with 1‒3 lateral lobes (not pinnatisect); cauline leaves petiolate, cordate at base (not sessile, auriculate or amplexicaul at base); petals obovate to narrowly obovate, claw inconspicuous (not broadly obovate, with a claw as along as sepal); siliques truncate (not long-beaked) at apex. The microscopic characters of seed testa also show significant differences between Sinalliaria and Orychophragmus. Phylogenetic evidence from DNA sequences of nuclear ribosomal ITS and plastid region trnL-trnF indicates that Sinalliaria is a distinct group related to Orychophragmus and Raphanus, but these three genera do not form a clade. The new genus Sinalliaria is endemic to eastern China and has only one species and one variety. The new combinations, S. limprichtiana (Pax) X. F. Jin, Y. Y. Zhou & H. W. Zhang and S. limprichtiana var. grandifolia (Z. X. An) X. F. Jin, Y. Y. Zhou & H. W. Zhang are proposed here.

Cordyceps dipterigena. [Descriptions of Fungi and Bacteria].

1979 ◽  
Author(s):  
B. L. K. Brady
Keyword(s):  
Sri Lanka ◽  
South America ◽  
Geographical Distribution ◽  
New Guinea ◽  
North Central ◽  
Tropical Countries

Abstract A description is provided for Cordyceps dipterigena. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Diptera (Muscidae). GEOGRAPHICAL DISTRIBUTION: Widespread in tropical countries; Sri Lanka, Indonesia, New Guinea, North, Central and South America, Japan, Ghana.

scholarly journals Total evidence phylogeny of Pontederiaceae (Commelinales) sheds light on the necessity of its recircumscription and synopsis of Pontederia L.

PhytoKeys ◽  
2018 ◽  
Vol 108 ◽  
pp. 25-83 ◽  
Author(s):  
Marco O. O. Pellegrini ◽  
Charles N. Horn ◽  
Rafael F. Almeida
Keyword(s):  
Molecular Data ◽  
Identification Key ◽  
Total Evidence ◽  
New Combinations ◽  
Identification Keys

A total evidence phylogeny for Pontederiaceae is herein presented based on new morphological and previously published molecular data. Our results led us to re-circumscribe Pontederia to include Monochoria, Pontederias.s. and the polyphyletic Eichhornia. We provide the needed ten new combinations and 16 typifications, arrange a total of 25 accepted species (six representing re-established names) in 5 new subgenera. Furthermore, we provide an identification key for the two genera accepted by us in Pontederiaceae, an identification key to the subgenera, identification keys to the species of each subgenus and commentaries on Pontederias.l., as well as for each subgenus and each species.

scholarly journals How Web Shops Impact Consumer Behavior?

2021 ◽  
Vol 15 (3) ◽  
pp. 350-356
Author(s):  
Helena Štimac ◽  
Ivan Kelić ◽  
Karla Bilandžić
Keyword(s):  
Multivariate Analysis ◽  
Linear Regression ◽  
Correlation Analysis ◽  
Reliability Analysis ◽  
Online Shopping ◽  
Customer Behavior ◽  
Descriptive Statistics ◽  
Firm Reputation ◽  
Marketing Actions ◽  
The Impact

The behavior of e-customers is quite unpredictable, which raises additional questions about this topic. The purpose of the paper is to conduct research on e-customers, understand the impact of marketing actions on e-customer behavior and understand the unpredictability of e-customers. Research was conducted on the Mlinar web shop that sells cakes. 284 respondents/buyers had the opportunity to solve questionnaires about behavior after purchase and consumption of product. Different methods have been used in the analysis - descriptive statistics, multivariate analysis (reliability analysis, correlation analysis and linear regression) and analysis of variance (ANOVA). The results showed that most examinees were satisfied with online shopping on the Mlinar web shop and that they are impulsive when online shopping. Saving time is the main reason to buy on a web shop. Research proved that variables such as firm reputation/perceived value, e-satisfaction and online services positively affect the creation of e-loyalty in their users.

Nomenclatural novelties in the fern genus Tectaria (Tectariaceae)

Phytotaxa ◽  
2014 ◽  
Vol 178 (3) ◽  
pp. 225 ◽  
Author(s):  
Shi-Yong Dong
Keyword(s):  
Molecular Data ◽  
New Combinations

Based on recent molecular data and morphology, here I propose eight new combinations and five new names to accommodate the species of Heterogonium in Tectaria.

scholarly journals Insights on The Morphological and Phylogenetic Delimitation of Dacrymyces Nees

2021 ◽  
Author(s):  
Renato Lúcio Mendes Alvarenga ◽  
Tatiana Baptista Gibertoni
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Molecular Data ◽  
Morphological Features ◽  
New Combinations ◽  
Dna Analyses ◽  
Homogeneous Composition ◽  
Morphological And Molecular Data

Abstract Dacrymycetes has four families and 13 genera, few of them with molecular data available and then usually polyphyletic in phylogenetic analyses. Dacrymyces Nees is one of the polyphyletic genera in Dacrymycetes and it was introduced to accommodate one species, D. stillatus Nees. The morphological features of the genus are a homogeneous composition of the intra-structure and an amphigenous or superior hymenium. In this study, we included Neotropical specimens in the phylogeny of the Dacrymycetes and Dacrymyces s.s. is emended to include species with resupinate basidiomata, unilateral hymenium and heterogeneous context. In this new delimitation, the new species Dacrymyces flavobrunneus is described using morphological and molecular data and three new combinations (D. ceraceus comb. nov., D. maxidorii comb. nov. and D. spathularia comb. nov.) are proposed based on DNA analyses.

scholarly journals RAS Mutations Are the Predominant Molecular Alteration in Poorly Differentiated Thyroid Carcinomas and Bear Prognostic Impact

2009 ◽  
Vol 23 (10) ◽  
pp. 1715-1715
Author(s):  
Marco Volante ◽  
Ida Rapa ◽  
Manoj Gandhi ◽  
Gianni Bussolati ◽  
Daniela Giachino ◽  
...  
Keyword(s):  
Multivariate Analysis ◽  
Diagnostic Criteria ◽  
Molecular Data ◽  
Genetic Alteration ◽  
Prognostic Impact ◽  
Genetic Event ◽  
Thyroid Carcinomas ◽  
Ras Mutations ◽  
Poorly Differentiated Carcinoma ◽  
Poorly Differentiated

ABSTRACT Context Poorly differentiated carcinomas represent an aggressive group of thyroid tumors with controversial classification placement and poorly understood pathogenesis. Molecular data in this group of tumors are extremely heterogeneous, possibly reflecting different inclusion criteria. Recently homogeneous diagnostic criteria have been proposed by our group (Turin proposal) that need to be complemented by detailed molecular characterization. Objective The objective of the study was to define a comprehensive molecular typing of poorly differentiated thyroid carcinomas classified following homogeneous diagnostic criteria. Design Sixty-five cases of poorly differentiated carcinoma selected following the Turin proposal have been screened for N-, K-, H-RAS, BRAF, RET/PTC1 and 3, and PAX8/PPARγ mutations-rearrangements using alternative techniques and in two different laboratories. Molecular data were compared with clinical pathological parameters and survival by univariate and multivariate analysis. Results RAS mutations in codon 61 were by far the most common genetic alteration in poorly differentiated carcinomas (23% of cases), with all mutation in NRAS except one in the HRAS gene. A single BRAF mutation was found in a poorly differentiated carcinoma with a residual component of a tall cell variant of papillary carcinoma. No KRAS, RET/PTC, or PAX8/PPARγ genetic alteration was detected. In this series, the presence of RAS mutations was a unique negative prognostic parameter at multivariate analysis. Conclusions The present study demonstrates that strictly classified poorly differentiated carcinomas are genetically homogeneous, RAS mutations being the almost exclusive genetic event. Moreover, the detection of RAS mutations might be clinically relevant for the prognostic stratification of these tumors.

scholarly journals Phylogenetic implications of the anatomical study of the Amburaneae clade (Fabaceae: Faboideae)

2020 ◽  
Vol 194 (1) ◽  
pp. 69-83
Author(s):  
João Pedro Silvério Pena Bento ◽  
Edna Scremin-Dias ◽  
Flávio Macedo Alves ◽  
Vidal De Freitas Mansano ◽  
Ângela Lúcia Bagnatori Sartori
Keyword(s):  
Vascular System ◽  
Phylogenetic Analyses ◽  
Glandular Trichomes ◽  
Anatomical Study ◽  
Molecular Data ◽  
Secretory Structures ◽  
Phylogenetic Implications ◽  
Secretory Cavities ◽  
Morphological And Molecular Data ◽  
Vegetative Characters

Abstract Phylogenetic analyses of early-diverging Faboideae have indicated that genera previously positioned in distinct tribes are instead closely related, e.g. in the Amburaneae clade, and the relatively recent rearrangements of many genera into clades has hampered the identification of morphological synapomorphies for previously unrecognized clades. Our aims are to evaluate anatomical vegetative characters of leaflets attached to reproductive features in the Amburaneae clade, to identify new synapomorphies for the clade and subclades, to identify characters supporting intergeneric relationships and diagnostic characters for the genus and species and to provide information about the morphology and histochemistry of secretory structures. The study was based on the anatomy of the leaflet of 19 species of the Amburaneae clade. Papillae cells, the presence of vascular system units and hypodermis are shared features of Amburaneae. Anatomical characters of the leaflet can be diagnostic at the generic and specific levels in Amburaneae. Secretory structures found in the clade are secretory cavities, secretory channels, idioblasts, mucilaginous epidermal cells and glandular trichomes. The broader concept of Amburaneae is reinforced here by morphological and molecular data, with the identification of new synapomorphies. Our dataset supports the intergeneric relationships resolved by molecular data.

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