scholarly journals Observations on the Biology and Anatomy of Myerslopiidae (Hemiptera, Membracoidea)

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Roman Rakitov
Keyword(s):  
Temperate Forests ◽  
Indirect Evidence ◽  
Malpighian Tubules ◽  
Secretory Cells ◽  
Vascular Bundles ◽  
Southern Chile ◽  
Phloem Sap ◽  
Pan Traps

Adults and nymphs ofMapuchea chilensis(Nielson), from the poorly known family Myerslopiidae, were collected from the litter horizon of temperate forests and shrub bogs in southern Chile. The species apparently feeds on roots and creeping stems of angiosperms. Salivary sheaths of captive specimens terminated in vascular bundles. Indirect evidence suggests feeding on phloem sap. Both nymphs and adults are strong jumpers and both actively disperse, as evidenced by their capture in pan traps. The Malpighian tubules of this species produce no brochosomes and, unlike in most previously studied Membracoidea, comprise no specialized secretory segment. Each tubule comprises secretory cells scattered among excretory ones, a condition not previously known among Hemiptera.

The Symptoms and Histopathology of Poisoning by Maneb in Oncopeltus fasciatus (Dallas),

1965 ◽  
Vol 97 (11) ◽  
pp. 1200-1208 ◽  
Author(s):  
R. D. McMullen
Keyword(s):  
Oxygen Consumption ◽  
Malpighian Tubules ◽  
Oncopeltus Fasciatus ◽  
Secretory Cells ◽  
Cell Nuclei ◽  
Gut Epithelium

AbstractManeb (manganous ethylene bisdithiocarhamate) applied topically to Oncopeltus fasciatus nymphs causes death after 7 to 10 days. The gross symptoms of intoxication, histopathology and effect on oxygen consumption are described. Activities such as feeding and walking are slightly reduced after 24 hours and completely inhibited after 3 to 4 days. The tissues most severely affected by the treatment are the secretory cells of the mid-gut epithelium and the cells of the Malpighian tubules. These at first show extreme vacuolization, reduction of the size of cell nuclei and finally cytolysis. Oxygen consumption in vivo is reduced by the treatment.

scholarly journals Struktur Anatomi dan Uji Histokimia Terpenoid dan Fenol Dua Varietas Sirih Hijau (Piper betle L.)

BIOSCIENTIAE ◽  
2021 ◽  
Vol 17 (2) ◽  
pp. 1
Author(s):  
Gusti Puspa Dewi ◽  
Evi Mintowati Kuntorini ◽  
Eny Dwi Pujawati
Keyword(s):  
Copper Acetate ◽  
Anatomical Structure ◽  
Secretory Cells ◽  
Cell Diameter ◽  
Piper Betle ◽  
Vascular Bundles ◽  
Palisade Parenchyma ◽  
Betel Leaf ◽  
Epidermal Tissue ◽  
Pith Parenchyma

This study aims to determine the anatomical structure and histochemical test of terpenoid and phenol compounds in two varieties of green betel plants (Piper betle). Making leaves anatomical structure preparations using the fresh method, testing terpenoid compounds with 5% copper acetate, testing phenol with ferric trichloride 10% and some grains of sodium carbonate. The observations of the anatomical structure of green betel leaf varieties 1 and varieties 2 have similarities consisting of the upper epidermis, upper hypodermis, palisade parenchyma, parenchymal sponges, vascular bundles (xylem and phloem), sclerenchyma, cholenchyma, lower epidermis, lower hypodermis, secretory cells, trichoma, stoma and calcium oxalate crystals, and in varieties 2 look more trichomes. The anatomical structure of the variety 1 betel stem and varieties 2 are arranged from the outside in the direction of the epidermal tissue, colenchymal tissue, cortical bundles, sclerenchyma, cortex, medullary and peripheral vascular files, pith, the central part of the stem is a secretory gland. Phenol in betel vine varieties 1 and varieties 2 is positive in the secretion cell part which is spread in the parenchymal tissue of the mother's leaf bone and lamina, whereas in the stem is spread around the cortex and pith parenchyma. Positive secretion cells contain phenol not as much as secretory cells containing terpenoids. Based on quantitative observations the size of oil cell density and secretion cell diameter, the essential oils contained in the cell secretions in the leaves of variety 1 are more than varieties 2 while in the varieties 2, there are more varieties 1.

scholarly journals FORMS AND AVAILABILITY OF SOIL PHOSPHORUS IN TEMPERATE FORESTS IN SOUTHERN CHILE AND FLANDERS

2003 ◽  
Vol 60 (1) ◽  
Author(s):  
Katleen De Brouwere ◽  
Ann Thijs ◽  
Maarten Hens ◽  
Roel Merckx
Keyword(s):  
Temperate Forests ◽  
Soil Phosphorus ◽  
Southern Chile

Two new species of the ladybird beetle Hong Ślipiński from Chile (Coleoptera: Coccinellidae: Microweiseinae)

Zootaxa ◽  
2013 ◽  
Vol 3616 (4) ◽  
pp. 387-395 ◽  
Author(s):  
GUILLERMO GONZÁLEZ ◽  
HERMES E. ESCALONA
Keyword(s):  
New Species ◽  
Temperate Forests ◽  
Subtropical Forest ◽  
Female Specimen ◽  
Southern Chile ◽  
Single Female ◽  
Ladybird Beetle ◽  
Two New Species

The ladybird beetle genus Hong Ślipiński was previously known from a single female specimen from a subtropical forest in South East Queensland, Australia. Hong guerreroi sp. nov. and H. slipinskii sp. nov. from a temperate forests of Central and Southern Chile are described and illustrated. A key for the species of the genus and complementary characters, in-cluding the first description of males, are provided.

scholarly journals Comparative structure of the osmophores in the flowers of Stanhopea graveolens Lindley and Cycnoches chlorochilon Klotzsch (Orchidaceae)

2012 ◽  
Vol 65 (2) ◽  
pp. 11-22 ◽  
Author(s):  
Sebastian Antoń ◽  
Magdalena Kamińska ◽  
Małgorzata Stpiczyńska
Keyword(s):  
Electron Microscopy ◽  
Cell Walls ◽  
Lipid Droplets ◽  
Secretory Cells ◽  
Vascular Bundles ◽  
Scent Glands ◽  
Euglossine Bees ◽  
Dense Cytoplasm ◽  
Transmission Electron ◽  
Comparative Structure

The structure of the osmophores in <i>Stanhopea graveolens</i> and <i>Cycnoches chlorochilon</i> was studied by means of light microscopy (LM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The scent glands are located in the basal part of the labellum. The surface of the osmophores is wrinkled or rugose, which increases the area of fragrance emission. On the surface of the epidermis, remnants of secretion are noticeable in <i>S. graveolens</i>, but these are absent in <i>C. chlorochilon</i>. The osmophore tissue is composed of secretory epidermal cells and several layers of subepidermal parenchyma, and it is supplied by vascular bundles that run in ground parenchyma. The secretory cells have large nuclei, a dense cytoplasm with numerous ER profiles, lipid droplets, and plastids with a substantial amount of starch, which are probably involved in the synthesis of volatile substances. In the cell walls of the osmophore cells, numerous pits with plasmodesmata occur that are likely to take part in symplastic transport of the scent compounds. The structure of the osmophores is similar in both investigated species. Both <i>S. graveolens</i> and <i>C. chlorochilon</i> are pollinated by euglossine bees, and such similarity results from adaptation to effective scent emission and attraction of pollinators.

scholarly journals The structure of the spur nectary in Dendrobium finisterrae Schltr. (Dendrobiinae, Orchidaceae)

2012 ◽  
Vol 64 (1) ◽  
pp. 19-26 ◽  
Author(s):  
Magdalena Kamińska ◽  
Małgorzata Stpiczyńska
Keyword(s):  
Electron Microscopy ◽  
Cell Walls ◽  
Single Layer ◽  
Secretory Cells ◽  
Vascular Bundles ◽  
Nectar Guides ◽  
Floral Nectary ◽  
Transmission Electron ◽  
Secretory Tissue ◽  
The One

To date, the structure of the nectary spur of <i>Dendrobium finisterrae</i> has not been studied in detail, and the present paper compares the structural organization of the floral nectary in this species with the spurs of other taxa. The nectary spur of <i>D. finisterrae</i> was examined by means of light microscopy (LM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). It is composed of a single layer of secretory epidermis and several layers of small and compactly arranged subepidermal secretory cells. The secretory cells have thick cellulosic cell walls with primary pits. The secretory tissue is supplied by vascular bundles that run beneath in ground parenchyma and are additionally surrounded by strands of sclerenchymatous fibers. The flowers of the investigated species displayed morphological features characteristic of bee-pollinated taxa, as they are zygomorphic, creamy-green coloured with evident nectar guides. They also emit a weak but nice scent. However, they possess some characters attributed to bird-pollinated flowers such as a short, massive nectary spur and collenchymatous secretory tissue that closely resembles the one found in the nectaries of certain species that are thought to be bird-pollinated. This similarity in anatomical organization of the nectary, regardless of geographical distribution and phylogeny, strongly indicates convergence and appears to be related to pollinator-driven selection.

scholarly journals Morphology, histochemical test, potential, and conservation effort of Alpinia warburgii K. Schum., a native species to Sulawesi

2021 ◽  
Vol 948 (1) ◽  
pp. 012014
Author(s):  
Trimanto ◽  
L Hapsari
Keyword(s):  
Native Species ◽  
Cell Structure ◽  
Morphological Characteristics ◽  
Anatomical Study ◽  
Anatomical Structure ◽  
Ex Situ ◽  
Secretory Cells ◽  
Vascular Bundles ◽  
Conservation Effort ◽  
Histochemical Tests

Abstract Alpinia warburgii is a species of the Zingiberaceae family native to Sulawesi. This study aims to characterize the plant morphology; analyze the anatomical structure, histochemical localization, and secretory cell structure of the rhizome; also discuss the potential and conservation effort of the species. Anatomical study and histochemical tests were observed microscopically using the fresh preparation method and wet mounted slide. Histochemical tests carried out include starch, protein, lipid, tannin, alkaloid, and flavonoid. This study is considered the first report of histochemical tests on A. warburgii. The main morphological characteristics of A. warburgii are perennial herbaceous; inflorescence terminal and raceme; flowers white, labellum obovate with red lines in the middle, and flanked by light green edges; fruit globose, green when young and yellow when ripe. The rhizome anatomical structure comprises the epidermis, endodermis, hypodermis, parenchyma, cortex, and vascular bundles, classified as closed collateral type. Histochemical tests showed positive localization for starch, protein, alkaloids, flavonoids, and tannins. The density of flavonoids secretory cells is higher than tannins and alkaloids, which indicates its potential as medicine to be associated with antioxidant, antimicrobial, antiinflammation, and anticancer. In addition to in-situ, ex-situ conservation effort through propagation is also important to maintain the species.

scholarly journals First report of an arboreal scorpion (Bothriuridae: Urophonius) from the temperate forests of southern Chile

2011 ◽  
Vol 75 (2) ◽  
pp. 187-191 ◽  
Author(s):  
Jaime Pizarro-Araya ◽  
Andrés A Ojanguren-Affilastro ◽  
Lorenzo Prendini
Keyword(s):  
Temperate Forests ◽  
Southern Chile ◽  
First Report

The extraction of photosynthate high in [11C]sucrose and its translocation in sunflower stems

1980 ◽  
Vol 58 (1) ◽  
pp. 100-107 ◽  
Author(s):  
D. B. Hayden ◽  
D. S. Fensom ◽  
R. G. Thompson
Keyword(s):  
Half Life ◽  
Indirect Evidence ◽  
Phloem Transport ◽  
Water Soluble ◽  
Vascular Bundles ◽  
Soluble Extract ◽  
Xylem Transport ◽  
Phloem Translocation ◽  
Water Soluble Extract ◽  
The Individual

A technique has been developed to biosynthesize a water-soluble extract of 11C-labelled photosynthate high in [11C]sucrose. The extract can be produced in less than 1 half-life (20 min) and is of high activity. When 11C-labelled extract was fed to the individual vascular bundles of other living plants, 11C was taken up and translocated, and on the basis of direct and indirect evidence it was largely in the form of [11C]sucrose.11C-labelled extract, if fed to a flap or gentle scraping on the surface of a sunflower stem (or corn, cow-parsnip, pine, or elm) was translocated both apically and basally from the feed point. Incisions into xylem vessels produced very rapid tracer movements which seemed to be associated with xylem vessel liquid cavitation and also transpiration pull. Shallower cuts produced translocation patterns similar to 11CO2 leaf feedings and are thought to be largely in the phloem. Phloem transport was blocked by ice chilling; xylem transport was only slightly affected by ice, if at all. Phloem translocation profiles often displayed steps at the front of mass flow, and later appeared to have peaks of activity moving along them. The movements were sometimes rapid (>6 cm min−1) and appeared to be complex, as if different channels were conducting at different speeds in parallel.

scholarly journals Morphology, anatomy and ultrastructure of yarrow (Achillea millefolium L.) floral nectaries

2012 ◽  
Vol 59 (1) ◽  
pp. 17-28 ◽  
Author(s):  
Aneta Sulborska ◽  
Elżbieta Weryszko-Chmielewska
Keyword(s):  
Cell Ultrastructure ◽  
Achillea Millefolium ◽  
Secretory Cells ◽  
Vascular Bundles ◽  
Cell Nuclei ◽  
Golgi Bodies ◽  
Glandular Cells ◽  
A Cell ◽  
Electron Microscopes ◽  
Big Cell

The studies focused on the morphological and anatomical features as well as those related to the ultrastructure of nectary cells <i>Achillea millefolium</i> Asteraceae family. The nectary presence was confirmed only in the disk flowers at the pistil style base. The micromorphology of nectaries was investigated in SEM, and structure was observed in a light and transmission electron microscopes. A number of layers composing a gland, the size and shape of epidermal and glandular cells were determined. The secretory cell ultrastructure was analyzed. The discoidal nectary gland observed from above had a pentagonal shape, 181.5 µm height and 299.4 µm diameter. It was built of the monolayer epidermis and 6 layers of the secretory cells on average. The glandular cells appeared to be bigger (27 µm) than the epidermal cells (22 µm), a cell shape in both tissues differed as well. The nectar secretion occured through the modified stomata. The stomata cells were at distinguishable greater size and raised above the surface of epidermis. The nectaries were supplied by the vascular bundles running from the pistil style up to the nectary base, not getting into the gland. In the cells of the nectary epidermis observed in TEM the big cell nuclei, numerous plastids, mitochondria and vacuoles with fibrous secretion deposits and vesicular structures were found. In the cells of the nectary secretory tissue there were dense cytoplasm, many plastids, mitochondria, Golgi bodies and the extensive network of the endoplasmic reticulum.

Sign in / Sign up

Export Citation Format

Share Document