Scape anatomical studies in populations of Urginea indica Kunth. Liliaceae

The current study presents investigations on the scape anatomical characteristics of Urginea indica population, a geophyte growing in India, Africa and Mediterranean regions. For scape anatomical studies transverse sections of inflorescence axis were taken and studied for the first time. The twelve different population studied revealed that outer most epidermis of inflorescence is covered by thick cuticle. Cortex is differentiated into 3 regions outer chlorenchyma, middle collenchyma and inner parenchyma. But the shape and number of rows of cells vary in different populations collected from various localities of Karnataka. Vascular bundles are arranged in 3 rows, 2 rows in few populations and number. of vascular bundles vary. Larger bundles varies from 5-8, medium 8-12 and smaller bundles 5 to 21 in number. Xylem elements are uniseriate and biseriate in few. Some populations show Myelin structures and cell inclusions, based on their ecological habitat. The distinctions among cross sections of scapes are evident and our findings offer a comprehensive study using anatomical traits for delimitation and diagnosing populations of U.indica providing a platform for further taxonomic investigations.

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New morphological and anatomical data on the genus Fuernrohria (Apiaceae)

Phytotaxa ◽

10.11646/phytotaxa.429.1.3 ◽

2020 ◽

Vol 429 (1) ◽

pp. 48-56

Author(s):

BARIŞ BANİ ◽

DUDU ÖZLEM MAVİ İDMAN

Keyword(s):

Cross Sections ◽

Leaf Sheath ◽

Distribution Area ◽

Morphological Description ◽

Leaf Segment ◽

Vascular Bundles ◽

Anatomical Data ◽

Micromorphological Characters ◽

First Time ◽

Stem Leaf

In this study, morphological and anatomical data (including fruit micromorphological characters) of the genus Fuernrohria were studied and compared with the related genera Grammosciadium, Caropodium and Vinogradovia. The morphological description of Fuernrohria setifolia, which is the only known species in the genus, is expanded. Photos of inflorescences, infructescences and leaves of the species taken from the wild are provided. Leaf segment and mericarps are illustrated, and also the distribution area of the genus is mapped. Anatomical features of root, stem, leaf sheath, leaf segment and fruit are presented with photographs of cross sections for each of them. Vegetative anatomical characteristics of the species and micromorphological description of fruit are given and exhibited for the first time in the present study. The results show that two important diagnostic characters for Fuernrohria are determined for the first time as “shape and size of commissural vittae in mericarps” and “number of vascular bundles in leaf cross section”.

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ON THE MORPHOLOGY AND ANATOMY OF TWO SPECIES OF LEPISORUS (J. SMITH) CHING: L. THUNBERGIANUS (KAULF) CHING, AND L. EXCAVATUS (BORY) CHING

Canadian Journal of Botany ◽

10.1139/b65-167 ◽

1965 ◽

Vol 43 (12) ◽

pp. 1583-1588 ◽

Cited By ~ 3

Author(s):

Prem Khare

Keyword(s):

Vascular Bundles ◽

Anatomical Studies ◽

First Time

Morphological and anatomical studies of two species of Lepisorus (J. Smith) Ching, L. excavatus (Bory) Ching and L. thunbergianus (Kaulf) Ching, are described in detail for the first time. Both the plants are epiphytic with small, creeping rhizomes, bearing branched roots and two rows of simple, lanceolate, glabrous, short-petioled leaves. In both cases the roots are diarch, the rhizomes are dictyostelic, and the petioles have many vascular bundles. Leaves have a T-shaped xylem. Large, rounded exindusiate sori are arranged on either side, close to the midrib, in two rows. Sporangia are leptosporangiate and protected by peltate paraphyses. Monolete, bilateral spores with a two-layered granulate exine are present.

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Micromorphology and anatomy of the flowers of Galanthus nivalis and Leucojum vernum (Amaryllidaceae)

Regulatory Mechanisms in Biosystems ◽

10.15421/022071 ◽

2020 ◽

Vol 11 (3) ◽

Author(s):

O. S. Fishchuk ◽

A. V. Odintsova

Keyword(s):

Cross Sections ◽

Vascular System ◽

Fleshy Fruit ◽

Vascular Bundles ◽

Inferior Ovary ◽

Dorsal Vein ◽

Poorly Differentiated ◽

Galanthus Nivalis ◽

Significant Addition ◽

First Time

We studied the structure of flowers of Galanthus nivalis and Leucojum vernum using cross-sections and longitudal sections of permanent preparations using a light microscope. Genera Galanthus and Leucojum belong to the Galantheae tribe characterized by a unique combination of features of the family Amaryllidaceae, i.e. absence of septal nectaries, poricidal anthers and fruit – fleshy capsule. Both species are represented in the flora of Ukraine and have the life form of bulb ephemeroid of decidous forests. Microscopic surveys of flowers are considered as an instrument for determining yet unknown structural adaptations of plants to specialized ways of pollination and determining the first stages of morphogenesis of fruit, because many features of the fruit appear already at the stage of flower. We determined that the tepals of both studied species have multi-bundle traces of 8–9 vascular bundles. Apical dehiscence of the anthers occurs due to short longitudinal sutures in the upper part of the anthers. The nectar disk on the roof of the inferior ovary is poorly differentiated, and has no vascular bundles. We associate the indicated peculiarities of the flower structure with the offer of pollen as the main reward of the pollinator during buzz-polination, which has not reported for the studied species. Placentation is axile in the lower part of the ovary and parietal in the upper one. We consider that the gynoecium of the studied species is eusyncarpous. The vascular system of the inferior ovary is composed of three dorsal and three septal veins, paired ventral bundles of carpels, which form the traces of ovules, and also small additional bundles in the wall of the ovary. For the first time, we have determined the presence of airy parenchyma in the ovules, ovary roof, the style and anthers’ connectives and have confirmed their presence in the tepals and the wall of the ovary at the stage of flowering. We found differentiation of the mesocarp into photosynthesizing and airy parenchyma, small sizes of cells of the endocardium in the area of the dorsal vein, bifurcate dorsal bundles of the carpels, which could be considered as adaptation of different stages of morphogenesis of fruit to dehiscence. Anatomical peculiarities of the ovaries of G. nivalis and L. vernum: numerous vascular bundles in the pericarp, thick parenchyma mesocarp with air-filled cavities, non-lignified endocarp at the stage of the flower we consider adaptations to the formation of fleshy fruit. The new data we obtained on the anatomical structure of the flowers is a significant addition of information about anthecological and carpological (post-anthetic) peculiarities of the surveyed species.

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Morphology and anatomy of Hedysarum pannosum (Boiss.) Boiss. (Fabaceae)

Acta Botanica Croatica ◽

10.1515/botcro-2015-0009 ◽

2015 ◽

Vol 74 (1) ◽

pp. 19-29 ◽

Cited By ~ 5

Author(s):

Huseyin Dural ◽

Burcu Yilmaz Citak

Keyword(s):

Cross Sections ◽

Secondary Growth ◽

Morphological Features ◽

Anatomical Studies ◽

Pollen Exine ◽

Exine Ornamentation ◽

First Time

Abstract The aim of this paper is to investigate morphological, anatomical, palynological, fruit and seed micromorphological properties of Hedysarum pannosum (Boiss.) Boiss. A detailed description of the species is reported for the first time in this study. The morphological features of the species have been compared with the results of previous investigations. Anatomical studies have been carried out on cross-sections of roots, stems, leaflets and petioles. The anatomical results show that the plants have secondary growth roots, protruding stems, amphistomatic and equifacial leaves with tannin, triangular shaped petioles. Hedysarum pannosum pollen are tricolpate, prolate and pollen exine ornamentation is reticulate. Fruits have trichomes on their setae and tomentose trichomes have papillae. Seeds are reniform and they have rugolo-reticulate ornamentation.

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Foliar anatomy of Rhynchosia spp. (Leguminosae, Papilionoideae) from Roraima state, northern Brazilian Amazon

Acta Amazonica ◽

10.1590/1809-4392201801691 ◽

2019 ◽

Vol 49 (1) ◽

pp. 28-35

Author(s):

Andréia Silva FLORES ◽

Eduardo de Souza COSTA ◽

Germana Bueno DIAS

Keyword(s):

Cross Sections ◽

Glandular Trichomes ◽

Brazilian Amazon ◽

Morphological Characters ◽

Vascular Bundles ◽

Middle Portion ◽

Foliar Anatomy ◽

Anatomical Characters ◽

Definition Of ◽

First Time

ABSTRACT Comparative studies on the structure of foliar anatomy in four species of Rhynchosia from Roraima state (northern Brazilian Amazon) were carried out to identify additional morphological characters to support the definition of the systematic boundaries among the species. Fully expanded leaves, including the petioles, were collected from the upper nodes of a plant’s stem. Anatomical characters were observed in cross-sections of the middle portion of leaflets and petiole segments. Presence and distribution of glandular trichomes, continuity of sclerenchyma around the vascular bundles in leaflet blades and the conformation of the area between the two ridges of petioles were important characters to distinguish among the species of Rhynchosia. For the first time we report a distinct multicellular gland-like structure which we found in the petioles of three species.

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Morphoanatomy of three Indigofera species (Leguminosae-Papilionoideae) in Java, Indonesia

Biodiversitas Journal of Biological Diversity ◽

10.13057/biodiv/d211162 ◽

2020 ◽

Vol 21 (11) ◽

Author(s):

Henta Fugarasti ◽

Muzzazinah MUZZAZINAH ◽

Murni Ramli

Keyword(s):

Secondary Xylem ◽

Optical Microscope ◽

Vascular Bundles ◽

Secondary Phloem ◽

Palisade Parenchyma ◽

Anatomical Studies ◽

Anatomical Features ◽

Cambium Activity ◽

Xylem Elements ◽

Anatomical Characters

Abstract. Fugarasti H, Muzzazinah, Ramli M. 2020. Morphoanatomy of three Indigofera species (Leguminosae-Papilionoideae) in Java Indonesia. Biodiversitas 21: 5531-5538. This study aimed to explore the morphological and detailed anatomical features of the stems, leaves, and roots from three Indonesian Indigofera species. Morphological-anatomical studies of three Indonesian Indigofera species were carried out using embedded microscopic preparations. The anatomical characters of the specimens were observed using a compound optical microscope with magnification 40x, 100x, and 400x. The observation showed the anatomical cross-section of I. tinctoria stem was rectangular, I. suffruticosa was hexagonal, and I. arrecta was rounded. The tissue structures of Indigofera species, from the outside layer, were the epidermis, thin cortex, secondary phloem (narrow or wide), thick secondary xylem, and conspicuous pith in the middle. Whilst, the corner of I. suffruticosa stem contained thick collenchyma. The vascular bundles were the open collateral. The leaves of Indigofera species are made up of the upper epidermis, mesophyll (palisade parenchyma, spongy parenchyma), and the lower epidermis. The vascular bundles were located in the middle, with five or six segments of the xylem elements and small groups of phloem elements, all in the parallel lines. The primary stele type of the roots is actinostele, cambium activity pushed him aside. The vascular bundle of the roots consisted of a dense and tight secondary xylem composed of thick-walled circular vessels (mostly tightly arranged). Data about the morphoanatomy structure of three Indonesian Indigofera species could complement the novelty of the morpho-anatomy information records obtained by previous researchers.

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Histopathologic Differences between Jewish and Arab Population in Israel at First-Time Presentation with Bladder Cancer

BioMed Research International ◽

10.1155/2017/8239601 ◽

2017 ◽

Vol 2017 ◽

pp. 1-4

Author(s):

Ofir Avitan ◽

Zaher Bahouth ◽

Sarel Halachmi ◽

Sagi Shprits ◽

Ismail Masarwa ◽

...

Keyword(s):

Metastatic Disease ◽

Urothelial Cancer ◽

Categorical Variables ◽

Arab Women ◽

Chi Square ◽

Arab Population ◽

Different Populations ◽

Aggressive Tumors ◽

Arab Men ◽

First Time

Background. Pathology of urothelial carcinoma may vary in different populations at diagnosis. Our aim was to evaluate the histopathologic differences between Jewish and Arab patients in Israel at first diagnosis of urothelial cancer. Patients and Methods. We retrospectively collected data of all patients with confirmed urothelial cancer, treated at our department between January 2010 and January 2015. We examined the distribution of the histopathologic data among the studied populations. To compare the categorical variables we used the Chi-Square Pearson test. Comparison of independent variables was made by Student’s t-test. P value below 0.05 was considered significant. Results. The study group included 413 patients, 345 Jews and 68 Arabs. The major differences were that Arab patients were younger (62.61 versus 68.55 years, P=0.001), had more aggressive tumors that were detected at a more advanced stage, and had also a higher rate of metastatic disease (7.4% versus 3.2%, P=0.05). Nonurothelial cell tumors were 2.3 times more prevalent in Arab population. Unlike Jewish population, Arab women had higher rate of invasive/metastatic disease compared with Arab men (40% versus 22.4%). Conclusion. At time of diagnosis the tumors were more aggressive in Arab patients, especially in Arab women. The reasons for those differences constitute a target for a separate research. These results should have an impact on prevention medicine and education of physicians treating mixed populations.

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The Mechanics of the Secondary Flows of Viscoelastic Fluids in Non-Circular Straight Tubes and the Mean Transversal Field in Pulsating Flows

10.1115/imece2000-1994 ◽

2000 ◽

Author(s):

Dennis A. Siginer ◽

Mario F. Letelier

Keyword(s):

Secondary Flow ◽

Cross Sections ◽

Viscoelastic Fluids ◽

Secondary Flows ◽

Novel Approach ◽

Transversal Field ◽

Time Domains ◽

Viscoelastic Liquids ◽

First Time ◽

Secondary Flow Field

Abstract A survey of secondary flows of viscoelastic liquids in straight tubes is given including recent work pointing at striking analogies with transversal deformations associated with the simple shearing of solid materials. The importance and implications of secondary flows of viscoelastic fluids in heat transfer enhancement are explored together with the difficulties in detecting weak secondary flows (dilute, weakly viscoelastic solutions) in a laboratory setting. Recent new work by the author and colleagues which explores for the first time the structure of the secondary flow field in the pulsating flow of a constitutively nonlinear simple fluid, whose structure is defined by a series of nested integrals over semi-infinite time domains, in straight tubes of arbitrary cross-sections is summarized. The transversal field arises at the second order of the perturbation of the nonlinear constitutive structure, and is driven by first order terms which define the linearly viscoelastic longitudinal flow in the hierarchy of superposed linear flows stemming from the perturbation of the constitutive structure. Arbitrary conduit contours are obtained through a novel approach to the concept of domain perturbation. Time averaged, mean secondary flow streamline contours are presented for the first time for triangular, square and hexagonal pipes.

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Morphological, Anatomical and Cytological Studies of some Moss Species from Nigeria

Notulae Scientia Biologicae ◽

10.15835/nsb9310056 ◽

2017 ◽

Vol 9 (3) ◽

pp. 404-413

Author(s):

Abolade Oluremi BOLAJI ◽

Julius Olaoye FALUYI

Keyword(s):

Chromosome Numbers ◽

Taxonomic Status ◽

Knowledge Gaps ◽

Moss Species ◽

Anatomical Studies ◽

First Time

Morphological, anatomical and chromosome studies of Hyophila crenulata C, Mull. Ex Dus, Thuidium gratum (P. Beauv) Jaeg., Barbula lambarenensis P. Vard.. Stereophyllum nitense Mitt. and Bryum coronatum Schwaegr from Nigeria, were carried out with a view to bridging some knowledge gaps that exist in their characterization and providing insightful information that could be useful in elucidating their taxonomic status. The morphological and anatomical studies revealed several gametophytic and sporophytic attributes which have not been previously reported and which were diagnostic for the moss species studied. The chromosome studies revealed the chromosome numbers to be Hyophila crenulata n = 4; Thuidium gratum n = 12 (10 + 2 m); Barbula lambarenensis n = 3; Stereophyllum nitense n = 9; and Bryum coronatum n = 10. The study concluded that the details of the morphological and anatomical descriptions as well as the chromosome numbers being reported for the first time in this study for the moss species studied could be very useful in their identification and taxonomic delimitation.

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Performance Evaluation of a Nanomaterial-Based Thermoelectric Generator with Tapered Legs

Global Journal of Energy Technology Research Updates ◽

10.15377/2409-5818.2020.07.5 ◽

2020 ◽

Vol 7 ◽

pp. 48-54

Author(s):

Marilyn A. Ebiringa ◽

John Paul Adimonyemma ◽

Chika Maduabuchi

Keyword(s):

Cross Sections ◽

Thermoelectric Generator ◽

Bulk Material ◽

Electrical Energy ◽

Ansys Software ◽

Thermoelectric Effects ◽

Trapezoidal Shape ◽

Solar Radiation Intensity ◽

Geometry Configuration ◽

First Time

A thermoelectric generator (TEG) converts thermal energy to electricity using thermoelectric effects. The amount of electrical energy produced is dependent on the thermoelectric material properties. Researchers have applied nanomaterials to TEG systems to further improve the device’s efficiency. Furthermore, the geometry of the thermoelectric legs has been varied from rectangular to trapezoidal and even X-cross sections to improve TEG’s performance further. However, up to date, a nanomaterial TEG that uses tapered thermoelectric legs has not been developed before. The most efficient nanomaterial TEGs still make use of the conventional rectangular leg geometry. Hence, for the first time since the conception of nanostructured thermoelectrics, we introduce a trapezoidal shape configuration in the device design. The leg geometries were simulated using ANSYS software and the results were post-processed in the MATLAB environment. The results show that the power density of the nanoparticle X-leg TEG was 10 times greater than that of the traditional bulk material semiconductor X-leg TEG. In addition, the optimum leg geometry configuration in a nanomaterial-based TEG is dependent on the operating solar radiation intensity.

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