scholarly journals Comparative Foliar Epidermal Studies in Coix lacryma-jobi L. andCoix aquatica Roxb. (Poaceae)

2009 ◽  
Vol 1 (1) ◽  
pp. 37-40 ◽  
Author(s):  
Rinku Jitendrakumar DESAI ◽  
Vinay Madhukar RAOLE ◽  
Arun Omprakash ARYA
Keyword(s):  
Light Microscopy ◽  
Species Identification ◽  
Foliar Analysis ◽  
Abaxial Epidermis ◽  
Diagnostic Characters ◽  
Pointed Apex ◽  
Adaxial Epidermis ◽  
The Cross ◽  
Micromorphological Characters ◽  
Diagnostic Importance

As micromorphological knowledge was not available for Coix aquatica Roxb., the foliar epidermal studies were carried out for Coix lacryma-jobi L. and Coix aquatica Roxb. with the aim of determining the patterns of variation in their epidermal characteristics and assessing their value in species identification. Comparative foliar analysis was carried out by using light microscopy, after following routine scraping method. The characters of diagnostic importance in the identification of C. aquatica are the sparsely distributed prickle hairs with long pointed apex in the abaxial epidermis and dumbbell shaped silica cells in both the epidermises. The diagnostic characters for C. lacryma-jobi are the cross shaped silica cells and dumbbell shaped on the abaxial and adaxial epidermis respectively. The observed differences in certain micromorphological characters helps in identification of presently studied two species of Coix.

Clausospicula, a new Australian genus of grasses (Poaceae, Andropogoneae)

1991 ◽  
Vol 4 (2) ◽  
pp. 391
Author(s):  
M Lazarides ◽  
J Lenz ◽  
L Watson
Keyword(s):  
Cell Walls ◽  
Transverse Section ◽  
Northern Territory ◽  
Vascular Bundles ◽  
Monotypic Genus ◽  
Prominent Feature ◽  
Abaxial Epidermis ◽  
Diagnostic Characters ◽  
Adaxial Epidermis

Clausospicula, a new monotypic genus from the Darwin and Gulf District, Northern Territory, Australia, is described and illustrated. Its diagnostic characters include cleistogamous spikelets, reduced panicles, racemes and spikelets, and pedicelled spikelets which are poorly developed and deciduous, or suppressed. Also, the glumes of the bisexual spikelet are awned and slightly keeled or without keels. A prominent feature is the extension of the peduncle into an appendage to which the callus of the bisexual spikelet is attached. The epidermis is notable for its distinct costal and intercostal zones, rectangular intercostal long-cells with tessellated, pitted cell walls, stomata inserted beneath the overlapping interstomatals and arranged in definite rows bordering the costal zones, the presence of macrohairs, narrow microhairs 39–46.5 µm long, silica-celllcork-cell pairs with dumbbell-shaped silica bodies costally and butterfly-shaped silica bodies intercostally. The transverse section shows a distinct midrib with the vascular bundles arranged in a conventional arc abaxially and colourless tissue adaxially, and a symmetrically ordered lamina. The primary vascular bundles are accompanied by sclerenchyma as girders abaxially and adaxially; the adaxial epidermis is extensively bulliform and the abaxial epidermis is of bulliform-like cells.

New diagnostic characters of Kolhymorbis angarensis (Dybowski & Grochmalicki, 1925) (Gastropoda: Pulmonata: Planorbidae)

2009 ◽  
Vol 18 (2) ◽  
pp. 191-195
Author(s):  
E.V. Soldatenko
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Light Microscopy ◽  
Diagnostic Characters ◽  
Copulatory Apparatus ◽  
Scanning Electron

The radula morphology and the anatomy of the copulatory apparatus in Kolhymorbis angarensis were examined using light microscopy, scanning electron microscopy (SEM) and histological methods. Kolhymorbis angarensis was shown to have the stylet and the penial sac with a glandular appendage (flagellum), the characteristics, previously unknown for any species of this genus. The significance of these findings for the taxonomy of the genus is discussed.

scholarly journals The role of electron microscopy in kidney lesions: A review of its diagnostic importance

2013 ◽  
Vol 3 (5) ◽  
pp. 411-415
Author(s):  
AD Pant ◽  
K Solez
Keyword(s):  
Electron Microscopy ◽  
Light Microscopy ◽  
Renal Biopsy ◽  
Renal Pathology ◽  
Malignant Diseases ◽  
The World ◽  
Kidney Lesions ◽  
Diagnostic Importance

Electron microscopy is a technology which was at one time widely used for renal as well as non-renal benign and malignant diseases, but its use has been rapidly declining as hospitals all over the world cut down on expenses. This leaves the renal pathologist with only light microscopy and immunofl uorescence at his disposal to diagnose diseases. Few studies have stated the importance of electron microscopy in routine renal biopsy reporting. We look at different cases where electron microscopy has been helpful in diagnosis and review the literature to assess the role this investigative modality still has to play in modern renal pathology. Journal of Pathology of Nepal (2013) Vol. 3, No.1, Issue 5, 411-415 DOI: http://dx.doi.org/10.3126/jpn.v3i5.7871

Currhaeus, a new genus of net-winged beetles and phylogenetic analysis of Eurrhacini (Coleoptera: Lycidae: Lycinae)

Zootaxa ◽  
2020 ◽  
Vol 4869 (3) ◽  
pp. 387-403
Author(s):  
ELYNTON ALVES DO NASCIMENTO ◽  
TAMIRES DINIZ BRESSAN ◽  
MILADA BOCAKOVA
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Maximum Likelihood ◽  
Species Identification ◽  
Male Genitalia ◽  
New Genus ◽  
Morphological Data ◽  
Key To Species ◽  
Diagnostic Characters ◽  
Parsimony Trees

A new genus of Neotropical Lycidae, Currhaeus gen. nov., is herein proposed as the second Eurrhacini genus lacking parameres in male genitalia. Seven new species are described: Currhaeus striatus sp. nov., C. nigroapicalis sp. nov., C. championi sp. nov., C. tabascensis sp. nov., C. ruschii sp. nov., C. polegattoi sp. nov., and C. paranaensis sp. nov. Illustrations of diagnostic characters and a key to species identification are presented. Parsimony and maximum likelihood analyses of morphological data demonstrated that Currhaeus gen. nov. belongs in the crown Eurrhacini. Implied weighting parsimony trees recovered Currhaeus as sister to Eurrhacus Waterhouse. 

scholarly journals Description of six new large species of Argentinomyia Lynch-Arribálzaga, 1891 and redescription of Talahua fervida (Fluke, 1945) (Diptera, Syrphidae, Syrphinae)

ZooKeys ◽  
2020 ◽  
Vol 929 ◽  
pp. 19-51
Author(s):  
Augusto L. Montoya ◽  
Marta Wolff
Keyword(s):  
New Species ◽  
Costa Rica ◽  
Species Identification ◽  
Male Genitalia ◽  
Large Species ◽  
Diagnostic Characters ◽  
Taxonomic Key

The morphological similarities between five new large Argentinomyia species and Talahua fervida Fluke are characterized and presented. Six new species of Argentinomyia (10–12 mm long) are described: Argentinomyia andina Montoya & Wolff, sp. nov. (Colombia), Argentinomyia choachi Montoya, sp. nov. (Colombia), Argentinomyia quimbaya Montoya & Wolff, sp. nov. (Colombia), Argentinomyia huitepecensis Montoya, sp. nov. (México), Argentinomyia puntarena Montoya, sp. nov. (Costa Rica), and Argentinomyia talamanca Thompson, sp. nov. (Costa Rica). The genus Talahua Fluke is re-diagnosed and, Talahua fervida redescribed. A taxonomic key and a comparison of diagnostic characters are presented. Photographs of head, abdominal and wing maculae patterns, as well as illustrations of male genitalia are provided for species identification.

scholarly journals Fruit micromorphology in the Umbelliferae in Siberia and patterns of morphological diversity in the family

2020 ◽  
Vol 19 (1) ◽  
pp. 44-48
Author(s):  
T. A. Ostroumova
Keyword(s):  
Cell Wall ◽  
Species Identification ◽  
Morphological Traits ◽  
Morphological Diversity ◽  
Epicuticular Wax ◽  
Cell Form ◽  
Cell Arrangement ◽  
The Family ◽  
Cultivated Species ◽  
Micromorphological Characters

Fruit micromorphology of all 98 native, adventive, and cultivated species of the Umbelliferae of Siberiawas studied. We described simple hairs (size, shape, fine relief of cell wall, and tufted hairs), multicellular spines andglochidia, cell arrangement, cell form, fine relief (cuticular foldings), epicuticular wax, and stomata. We discuss thediversity of micromorphological characters and their value for species identification and taxonomy. We state numerousexamples of parallel variability of morphological traits in different subdivisions of the family

scholarly journals Morphological Characterization and Transcriptional Regulation of Corolla Closure in Ipomoea purpurea

2021 ◽  
Vol 12 ◽  
Author(s):  
Peipei Zhang ◽  
Mingyue Sun ◽  
Xiaoqiong Wang ◽  
Runjiu Guo ◽  
Yuchu Sun ◽  
...  
Keyword(s):  
Gene Expression ◽  
Time Course ◽  
High Temperature Stress ◽  
Degradation Pathway ◽  
Morning Glory ◽  
Abaxial Epidermis ◽  
Flower Opening ◽  
Bulliform Cells ◽  
Ipomoea Purpurea ◽  
Adaxial Epidermis

Corolla closure protects pollen from high-temperature stress during pollen germination and fertilization in the ornamental plant morning glory (Ipomoea purpurea). However, the morphological nature of this process and the molecular events underpinning it remain largely unclear. Here, we examined the cellular and gene expression changes that occur during corolla closure in the I. purpurea. We divided the corolla closure process into eight stages (S0–S7) based on corolla morphology. During flower opening, bulliform cells appear papillate, with pigments in the adaxial epidermis of the corolla. These cells have distinct morphology from the smaller, flat cells in the abaxial epidermis in the corolla limb and intermediate of the corolla. During corolla closure, the bulliform cells of the adaxial epidermis severely collapse compared to cells on the abaxial side. Analysis of transparent tissue and cross sections revealed that acuminate veins in the corolla are composed of spiral vessels that begin to curve during corolla closure. When the acuminate veins were compromised, the corolla failed to close normally. We performed transcriptome analysis to obtain a time-course profile of gene expression during the process from the open corolla stage (S0) to semi-closure (S3). Genes that were upregulated from S0 to S1 were enriched in the polysaccharide degradation pathway, which positively regulates cell wall reorganization. Senescence-related transcription factor genes were expressed beginning at S1, leading to the activation of downstream autophagy-related genes at S2. Genes associated with peroxisomes and ubiquitin-mediated proteolysis were upregulated at S3 to enhance reactive oxygen species scavenging and protein degradation. Therefore, bulliform cells and acuminate veins play essential roles in corolla closure. Our findings provide a global understanding of the gene regulatory processes that occur during corolla closure in I. purpurea.

Morphotaxonomy of the Simulium (Simulium) tuberosum species group (Diptera: Simuliidae) in Thailand

Zootaxa ◽  
2009 ◽  
Vol 2048 (1) ◽  
pp. 31-46 ◽  
Author(s):  
UBON TANGKAWANIT ◽  
CHALIOW KUVANGKADILOK ◽  
VISUT BAIMAI ◽  
PETER H. ADLER
Keyword(s):  
Species Identification ◽  
Species Group ◽  
Diagnostic Characters ◽  
Identification Keys ◽  
Unknown Species ◽  
Males And Females

Seventeen cytogenetically distinct taxa of the Simulium (Simulium) tuberosum species group in Thailand were examined morphologically, including Simulium doipuiense (cytoforms A and B), S. manooni, S. rufibasis, S. setsukoae, S. tani (cytoforms A-I), S. weji, S. yuphae, and one unknown species. Identification keys to larvae, pupae, males, and females are provided, along with diagnostic characters for each taxon and a morphology-based phylogeny.

Morphology and epidermal characters of Ginkgo pilifera Samyl. leaves and distribution of this species in the Late Cretaceous of Northern Asia

Palaeobotany ◽  
2016 ◽  
Vol 7 ◽  
pp. 5-37
Author(s):  
L. B. Golovneva
Keyword(s):  
River Basin ◽  
Cell Walls ◽  
Western Siberia ◽  
Leaf Shape ◽  
Northeastern Russia ◽  
Abaxial Epidermis ◽  
Adaxial Epidermis ◽  
Subsidiary Cells ◽  
Periclinal Walls ◽  
Kolyma River

In the result of investigation of new findings, the variability of leaf shape and epidermal characters of Ginkgo pilifera Samyl. were studied. Geographical and stratigraphic ranges of this species were analyzed on the base of new material and earlier published data. This species was described by Samylina (1967) from the upper part of the Timmerdyakh Formation exposed in the Lena-Vilyui depression in Eastern Siberia. After that many new occurrences of this species were reported. G. pilifera was widely distributed from late Albian to Maastrichtian in Asian part of the Siberian-Canadian paleogeographical region. The earliest occurrence was documented from the late Albian-lower Turonian deposits of the Krivorechenskaya Formation, Grebenka River basin, Northeastern Russia. Approximately in the same time (in the Cenomanian) remains of G. pilifera appeared in the lower part of the Timmerdyakh Formation in the Lena-Vilyui depression. In Western Siberia in the late Albian and Cenomanian other species of Ginkgo were found: G. sertensis N. Nosova et Golovn. and G. chlonoviae N. Nosova et Golovn. were described from the Kiya Formation and G. ragosinii N. Nosova et Golovn. and G. tjukansis Kiritch. were described from the Simonovo Formation. In the Turonian and Coniacian G. pilifera was discovered in the upper part of the Timmerdyakh Formation, in the Valizhgen Formation of Yelistratov peninsula in Penzhina Bay area, in volcanogenic deposits of the Kolyma River basin and in the Derevyannye Gory Formation of New Siberia Island. In the Santonian-Campanian this species was reported from the Arkagala Formation of the Kolyma River basin and from two localities in the Amur River basin: from upper part of the Kundur Formation in Russia and from the Taipinglinchang Formation in China. The last occurrence is the most southern finding of this species. In Maastrichtian G. pilifera penetrated in Western Siberia, that significantly increased its area in western direction. The most variable character in G. pilifera morphology is the leaf shape. Leaves change from entire to deep-dissected into several wide lobes with rounded or truncate apices. Dissected forms occured from late Albian to Coniacian and predominated in the Krivorechenskaya (late Albian-lower Turonian) and the Valizhgen (Turonian-Coniacian) Formations Northeastern Russia.During Santonian-Maastrichtian only entire forms were distributed. The variability of epidermal characters is insignificant. The most variable characters are degree of undulation of the anticlinal cell walls, degree of development of cuticular thickenings and number of stomata on adaxial epidermises and number of trichomes on of abaxial and adaxial epidermises. The specific diagnosis of this species was emended. Remains of G. pilifera occur in allochtonous taphocenosis together with other plants characteristic to riparian habitats. Probably, this species was confined to river valleys and was not connected with swamp environments.Paleoecological implication of great number of papillae and trichomes is steel unclear. Emended diagnosis. Leaves broadly fan-shaped, entire with undulate upper margin with several shallow incisions, or, more rarely, dissected into several wide lobes with rounded or truncate apices. Leaves amphistomatic. Anticlinal cell walls of adaxial epidermis sinuous with amplitude up to 2–3 μm; in costal zones sometimes slightly sinuous or straight. Periclinal walls with cuticular dome-shaped thickenings and rare trichomes. Number and development of cuticular thickenings vary in different areas of leaf lamina and in different leaves. Weak development of thickenings usually correlates with increased number of trichomes. Stomata at abaxial epidermis rare; the papillae of subsidiary cells do not cover the stoma completely. Anticlinal cell walls of abaxial epidermis slightly sinuous or straight. Periclinal walls usually with papillae (12-20 μm long), more rarely, smooth. Trichomes (up to 60–100 μm long) occur rather often. Big trichomes usually consist of 2-3 cells. Stomata at adaxial epidermis orientated irregularly, without formation of regular rows, surrounded by five to seven subsidiary cells. Each subsidiary cell bears a proximal papilla up to 15–25 μm long. These papillae completely cover the stoma.

scholarly journals Effects of Preplantation Phosphate on the Inner Morphology of Sugarcane Leaves

2019 ◽  
pp. 1-7
Author(s):  
Lucas Aparecido Manzani Lisboa ◽  
Reges Heinrichs ◽  
Paulo Alexandre Monteiro de Figueiredo
Keyword(s):  
Block Design ◽  
Essential Element ◽  
Vessel Diameter ◽  
Monoammonium Phosphate ◽  
Abaxial Epidermis ◽  
Adaxial Epidermis ◽  
Internal Morphology ◽  
Randomized Block Design

Phosphorus is considered an essential element for sugarcane, assuming great importance in rooting, tillering and final stem yield. In order to evaluate the effects of pre-planting phosphating on the internal morphology of sugarcane leaves, an experiment with the RB867515 variety was carried out in a randomized block design with 4 replications, in a factorial scheme 2x4, being two sources of phosphorus (decanted phosphate and monoammonium phosphate) and four doses of phosphorus (0; 80; 120; 160 kg ha-1 P2O5). At 120, 240 and 362 days after planting the following characteristics were evaluated: Abaxial epidermis thickness, adaxial epidermis thickness, mesophyll thickness, phloem vessel diameter and phloem vessel diameter. Phosphorus doses influenced the development of sugarcane leaf-bearing vessels at harvest. Concentrations above 160 kg ha-1 the P2O5 presented lower mean phloem diameter values in sugarcane leaves. Concentrations with 80 kg ha-1 the P2O5 presented greater xylem diameter in sugarcane leaves.

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