scholarly journals Comparative leaf morphological analysis of 20 species of Chrysobalanaceae

2015 ◽  
Vol 45 (1) ◽  
pp. 13-20 ◽  
Author(s):  
Marcos Melo CORRÊA ◽  
Veridiana Vizoni SCUDELLER ◽  
Maria Gracimar Pacheco de ARAÚJO
Keyword(s):  
Leaf Morphology ◽  
Morphological Analysis ◽  
Leaf Traits ◽  
Identification Key ◽  
Description Language ◽  
Forest Reserve ◽  
Morphological Studies ◽  
Vegetative Traits

Morphological studies focusing on vegetative traits are useful in identifying species when fertile material is not available. The aim of this study was to assess the application of comparative leaf morphology to identify species of the Chrysobalanaceae family. The morphological observations were made with a stereomicroscope. We used the diaphanization technique for viewing venation details. It is shown the descriptions of the leaf morphology, illustrations and an identification key for 20 species from genera Couepia, Licania and Parinari (Chrysobalanaceae) occurring in the Adolpho Ducke Forest Reserve, Manaus, AM, Brazil. The key was constructed using the DELTA (DEscription Language for TAxonomy) software. Leaf traits such as the presence of intersecondary venation and the type of insertion of secondary veins were recorded for each species. These morphological leaf traits are reliable for identifying species of Chrysobalanaceae

A revision of the extra-Andean Vivianiaceae

Phytotaxa ◽  
2016 ◽  
Vol 246 (1) ◽  
pp. 23 ◽  
Author(s):  
João Paulo Ramos Ferreira ◽  
Gustavo Hassemer ◽  
Sérgio Campestrini ◽  
Maximilian Weigend ◽  
Rafael Trevisan
Keyword(s):  
Leaf Morphology ◽  
Morphological Analysis ◽  
Morphological Characters ◽  
Identification Key ◽  
The Other ◽  
Polymorphic Species

The extra-Andean species of Vivianiaceae are here reviewed. We examine the morphological circumscription of Viviania albiflora (=Caesarea albiflora), evaluating all synonyms listed for this species. Although V. albiflora is a highly polymorphic species, especially regarding leaf morphology, a detailed morphological analysis leads us to conclude that V. linostigma, previously considered as one of its synonyms, needs to be accepted as a species. We noticed that the two species could be reliably differentiated by a trait such as tetramerous flowers for V. linostigma versus pentamerous flowers for V. albiflora. We present the other morphological characters and distribution differences that distinguish it from V. albiflora. All known synonyms of V. albiflora as well as V. linostigma along with the types lost at B herbarium are lectotypfied. An identification key, descriptions, illustrations and lists of synonyms are presented.

scholarly journals Morphological and molecular identifications of three native arbuscular mycorrhizal fungi isolated from the rhizosphere of Elaeis guineensis and Jatropha curcas in Indonesia

2021 ◽  
Vol 22 (11) ◽  
Author(s):  
Maria Viva Rini ◽  
Fitri Yelli ◽  
Darwin Leonardo Tambunan ◽  
Inggar Damayanti
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Molecular Analysis ◽  
Jatropha Curcas ◽  
Mycorrhizal Fungi ◽  
Morphological Analysis ◽  
Agricultural Land ◽  
Elaeis Guineensis ◽  
Arbuscular Mycorrhizal ◽  
Fungal Colonization ◽  
Morphological Studies

Abstract. Rini MV, Yelli F, Tambunan DL, Damayanti I. 2021. Morphological and molecular identifications of three native arbuscular mycorrhizal fungi isolated from the rhizosphere of Elaeis guineensis and Jatropha curcas in Indonesia. Biodiversitas 22: 4940-4947. Molecular analysis has been widely used to provide more accurate identification within arbuscular mycorrhizal fungi (AMF) species than identification based on morphology. However, morphological analysis is essential for a basic preliminary of classification studies. Therefore, a study is needed to complete the identification of AMF isolates through morphological and molecular analyses. This research used three AMF isolates, namely MV 5, MV 17, and MV 18, which were isolated from Indonesian agricultural land. Spore-based taxonomy (shape, size, color, ornamentation, PVLG, and Melzer’s reaction) and fungal colonization on roots of maize trap plants were employed for the morphological studies. AMF species identification was performed using molecular analysis through nested-Polymerase Chain Reaction (PCR) to amplify a fragment of SSU rRNA followed by sequencing and phylogenetic tree construction. Morphological analysis showed that MV 5 had spores borne from the neck of the sporiferous saccule, MV 17 was found to have a bulbous suspensor without a germination shield, and MV 18 had spores borne from subtending hyphae. The SSUR rRNA analysis revealed that MV 5, MV 15, and MV 18 were identified as Acaulospora longula, Gigaspora margarita, and Glomus etunicatum, respectively. Both morphological and molecular methods demonstrated reliable and consistent results that complement AMF taxonomy studies.

Diversity of Convolvulaceae from Meruoca Massif, Ceará, Brazil

Rodriguésia ◽  
2021 ◽  
Vol 72 ◽  
Author(s):  
Diego Santos ◽  
Marlene Feliciano Figueiredo ◽  
Maria Teresa Buril ◽  
Elnatan Bezerra de Souza
Keyword(s):  
Atlantic Forest ◽  
Geographic Distribution ◽  
Morphological Analysis ◽  
Deciduous Forest ◽  
The State ◽  
Identification Key ◽  
Dry Forest ◽  
Diagnostic Characters ◽  
Taxonomic Treatment ◽  
Northwest Region

Abstract We present the taxonomic treatment of Convolvulaceae for the Meruoca Massif, located in the Northwest region of the Ceará state, where there are remnants of Tropical Pluvial Sub-deciduous Forest (Dry Forest) and Tropical Pluvial-Nebular Rainforest (Wet Forest). The present study was based on the morphological analysis of specimens collected in the field and from the collections EAC, HUEFS, HUVA, PEUFR, and SPF. We recorded 24 species distributed in four genera: Ipomoea (18 species), Jacquemontia (three species), Distimake (two species), and Camonea (one species). We report the first records of I. cearensis for Atlantic Forest and I. aristolochiifolia to the state of Ceará. The taxonomic treatment includes identification key, morphological descriptions, geographic distribution, taxonomic and ecological comments, the period of flowering and fruiting, and photos and illustrations of the diagnostic characters.

Morphological Features and Markedness in the Old French Noun Declension

1987 ◽  
Vol 32 (2) ◽  
pp. 143-197 ◽  
Author(s):  
Douglas C. Walker
Keyword(s):  
Internal Structure ◽  
Morphological Analysis ◽  
Morphological Structure ◽  
Old French ◽  
Morphological Features ◽  
Historical Change ◽  
General Properties ◽  
Morphological Studies ◽  
Adjectival Inflection

In the evolution of morphological studies, morphological features and markedness have come to play increasingly important rôles. Feature notation in morphology allows the development of the notion of natural morphological class, renders explicit much of the internal structure of paradigms and permits the exploitation, suitably adapted, of many of the results obtained in phonology. Markedness considerations, particularly when linked to general theories of morphology, again highlight morphological structure, constrain the variety of permitted analyses, and indicate, at least in part, the expected direction of historical change. In the sections to follow, I will present an analysis of Old French nominal and adjectival inflection which makes key use of morphological features and the differences between the marked and unmarked values of these features. This study will be particularly concerned with constraining the morphological analysis of Old French and conversely, with using Old French data to investigate more general properties of morphological systems.

Let’s make Pulvigera great again: re-circumscription of a misunderstood group of Orthotrichaceae that diversified in North America

2020 ◽  
Vol 193 (2) ◽  
pp. 180-206 ◽  
Author(s):  
Francisco Lara ◽  
Isabel Draper ◽  
Maren Flagmeier ◽  
Juan Antonio Calleja ◽  
Vicente Mazimpaka ◽  
...  
Keyword(s):  
North America ◽  
Phylogenetic Reconstruction ◽  
Morphological Diversity ◽  
Morphological Characters ◽  
Identification Key ◽  
Marquesas Islands ◽  
Morphological Studies ◽  
Taxonomic Framework

Abstract Orthotrichum lyellii was described in 1878 based on the crisped leaves with plane margins on its elongated and branched stems, and on the presence of brood-bodies. In Europe, these characters remain constant, but in North America several similar forms lacking propagules have been described either at the specific or infraspecific level. These were all reduced to synonyms of O. lyellii. In 2015, Orthotrichum was divided, and O. lyellii was transferred to Pulvigera, a genus thus far considered to be monospecific. In this study, the variability of P. lyellii is analysed in an integrative taxonomic framework. Morphological studies on > 200 specimens, including the nomenclatural types of the taxa previously described, were combined with biogeographical and ecological evidence and with a phylogenetic reconstruction of 39 terminals based on five molecular loci. All the sources of evidence suggest the existence of four different taxa in North America, one also present on the Marquesas Islands. The study of type materials led to their identification as P. lyellii and three other taxa previously described from North America, Orthotrichum papillosum, O. lyellii var. howei and O. pringlei. These taxa differ from each other in taxonomically significant morphological characters of the gametophyte and sporophyte. The morphological diversity has led us to reinterpret Pulvigera, and to amend its description. Nomenclatural changes for the reinstated taxa are proposed, and full descriptions and an identification key for Pulvigera spp. in North America are provided.

scholarly journals Multivariate genome-wide association study of leaf shape in a Populus deltoides and P. simonii F1 pedigree

PLoS ONE ◽  
2021 ◽  
Vol 16 (10) ◽  
pp. e0259278
Author(s):  
Wenguo Yang ◽  
Dan Yao ◽  
Hainan Wu ◽  
Wei Zhao ◽  
Yuhua Chen ◽  
...  
Keyword(s):  
Leaf Morphology ◽  
Mixed Model ◽  
Linear Mixed Model ◽  
Populus Deltoides ◽  
Leaf Shape ◽  
Leaf Traits ◽  
Leaf Length ◽  
Moderate Number ◽  
Genome Wide ◽  
Poplar Leaf

Leaf morphology exhibits tremendous diversity between and within species, and is likely related to adaptation to environmental factors. Most poplar species are of great economic and ecological values and their leaf morphology can be a good predictor for wood productivity and environment adaptation. It is important to understand the genetic mechanism behind variation in leaf shape. Although some initial efforts have been made to identify quantitative trait loci (QTLs) for poplar leaf traits, more effort needs to be expended to unravel the polygenic architecture of the complex traits of leaf shape. Here, we performed a genome-wide association analysis (GWAS) of poplar leaf shape traits in a randomized complete block design with clones from F1 hybrids of Populus deltoides and Populus simonii. A total of 35 SNPs were identified as significantly associated with the multiple traits of a moderate number of regular polar radii between the leaf centroid and its edge points, which could represent the leaf shape, based on a multivariate linear mixed model. In contrast, the univariate linear mixed model was applied as single leaf traits for GWAS, leading to genomic inflation; thus, no significant SNPs were detected for leaf length, measures of leaf width, leaf area, or the ratio of leaf length to leaf width under genomic control. Investigation of the candidate genes showed that most flanking regions of the significant leaf shape-associated SNPs harbored genes that were related to leaf growth and development and to the regulation of leaf morphology. The combined use of the traditional experimental design and the multivariate linear mixed model could greatly improve the power in GWAS because the multiple trait data from a large number of individuals with replicates of clones were incorporated into the statistical model. The results of this study will enhance the understanding of the genetic mechanism of leaf shape variation in Populus. In addition, a moderate number of regular leaf polar radii can largely represent the leaf shape and can be used for GWAS of such a complicated trait in Populus, instead of the higher-dimensional regular radius data that were previously considered to well represent leaf shape.

Morphological studies on renewable castor oil-based nanocomposites with modified clay and MWCNTs as fillers

2020 ◽  
pp. 096739112093524
Author(s):  
Anupama Mogha ◽  
Anupama Kaushik
Keyword(s):  
Electron Microscopy ◽  
Castor Oil ◽  
Chemical Structure ◽  
Morphological Analysis ◽  
X Ray Diffraction ◽  
Multiwalled Carbon ◽  
X Ray ◽  
Morphological Studies ◽  
Transmission Electron ◽  
Commercial Applications

This research presents an analysis of castor oil-based polymer nanocomposites that can be used for numerous commercial applications. Due to the versatile chemical structure of castor oil, it can replace the petrochemical products and hence can be optimized as nontoxic bioresource for the production of nanocomposites with the incorporation of nanofillers in small quantities. It can be directly used as polyol resource without any chemical alteration for synthesis of polyurethane (PU) nanocomposites. The prepared PU nanocomposites were characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, wide angle X-ray diffraction, transmission electron microscopy (TEM), and mechanical properties. The compositional and structural studies indicate the formation of PU linkages and well dispersion of clay and multiwalled carbon nanotubes between the polymer–nanofiller phase, as shown by the morphological analysis using TEM. Also, there is an increase in the tensile strength and Young’s modulus values with the increase in the filler content.

scholarly journals Heterochronic origin of spherical fusulinid foraminifera in the late Paleozoic

Paleobiology ◽  
2020 ◽  
pp. 1-19
Author(s):  
Yukun Shi
Keyword(s):  
Morphological Analysis ◽  
Late Paleozoic ◽  
Morphological Development ◽  
The Novel ◽  
Morphological Novelty ◽  
Morphological Studies ◽  
Developmental Age ◽  
Ontogenetic Trajectory ◽  
Ancestral States ◽  
Hard Structures

Abstract Heterochrony describes acceleration, displacement, and/or retardation of descendants’ development events compared with ancestral states and has often been cited as an important process to bring about morphological novelty. It was coined one-and-a-half centuries ago and has been discussed by both paleobiologists and biologists frequently ever since. Many types of fossil organisms preserve aspects of their development histories in their bones or shells that have been used for heterochrony analyses, with body size being used as a developmental age indicator, despite questions being raised regarding this practice. For organisms whose hard structures consist of multiple chambers, or that contain growth lines, age information suggested by these structures independently can facilitate ontogenetic modeling. In this way, relations among size, shape, and age can be established to document patterns of morphological development. Morphological analysis of pseudoschwagerine fusulinids, a fossil foraminifera group that developed a morphologically novel spherical shell, along with their presumptive triticitid ancestors illustrates this approach to heterochrony analysis. Ontogenetic trajectory comparisons of four major pseudoschwagerine genera, as well as those of triticitids, document relations between their shapes, sizes, and developmental ages. A complex of heterochronic patterns, including peramorphic predisplacement, hypermorphosis, and acceleration, characterize pseudoschwagerine development and appear to be responsible for the novel appearance of large, inflated fusiform and spherical tests in these late Paleozoic benthic foraminifera. The morphometric approach employed in this investigation could be applied widely in the quantitative morphological studies of development histories in a variety of other fossil groups.

scholarly journals The first electronic polytomous key to the world species of the subgenus Typhlodromus (Anthoseius) De Leon (Acari: Phytoseiidae)

Zootaxa ◽  
2012 ◽  
Vol 3451 (1) ◽  
pp. 46
Author(s):  
FABIO AKASHI HERNANDES ◽  
SERGE KREITER ◽  
MARIE-STÉPHANE TIXIER
Keyword(s):  
Web Site ◽  
Identification Key ◽  
Free Software ◽  
Description Language ◽  
World Species ◽  
The Family ◽  
The World ◽  
Identification Of Species ◽  
World Level ◽  
The Web

This paper describes the first polytomous computerised identification key within the family Phytoseiidae. It applies to thefemales of the world species of the subgenus Typhlodromus (Anthoseius) De Leon. This group is one of the largest withinthe family Phytoseiidae and the sub-family Typhlodrominae, with nearly 350 species currently recognised worldwide. Noidentification tool of these species exists at the world level, which makes their identification very difficult and unsecure.Thirty five characters were used to characterise each of the 343 species. Among these characters, 14 are discrete and 21are continuous. The polytomous key was constructed using the free software DELTA 1.04 (DEscription Language forTAxonomy) and is freely available at the web site: http://www1.montpellier.inra.fr/CBGP/phytoseiidae/anthoseiuskeypresentation.html. We hope that this work will open new perspectives for the identification of species ofother genera (especially the largest ones, e.g. Neoseiulus, Euseius, Amblyseius) which contains more than 150 species andfor which no key presently exists. We also expect that the present work will make the identification of the world speciesof Typhlodromus (Anthoseius) easier and more secure. Finally, we expect a contribution from the whole Phytoseiidae scientist community to improve subsequent versions of the key.

The fruit flies (Diptera, Tephritidae) of the Madeira archipelago with the description of a new Oedosphenella Frey

Zootaxa ◽  
2020 ◽  
Vol 4810 (3) ◽  
pp. 559-575
Author(s):  
ANDREIA PENADO ◽  
JOHN SMIT ◽  
ANTÓNIO FRANQUINHO AGUIAR ◽  
DÉLIA CRAVO ◽  
CARLA REGO ◽  
...  
Keyword(s):  
New Species ◽  
Morphological Analysis ◽  
Fruit Flies ◽  
Identification Key ◽  
Madeira Island ◽  
Comparative Morphological Analysis ◽  
Madeira Archipelago ◽  
Senior Synonym ◽  
A New Species ◽  
New Distribution

A checklist of the tephritid fauna (Diptera: Tephritidae) from Madeira archipelago is presented, including 17 known species and new distribution records for Porto Santo and Desertas Islands. An identification key to Madeira Tephritidae species with detailed illustrations is also provided. A new species of Oedosphenella Frey 1936, discovered in Madeira Island in 2004, is described as Oedosphenella bob sp. n. This genus is redefined and a key to the known species is provided. Comparative morphological analysis revealed that Bevismyia basuto Munro 1957 from Malawi should be included in the genus Oedosphenella. Therefore, we consider the genus name Oedosphenella Frey 1936 to be a senior synonym of Bevismyia Munro 1957 syn.n.  

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