Secretory structures and cytochemical investigation of the leaf of Phlomis fruticosa, a seasonally dimorphic subshrub. Secreting activity of the leaf-originating calluses

Flora ◽  
2007 ◽  
Vol 202 (6) ◽  
pp. 429-436 ◽  
Author(s):  
Αnastasia Nikolakaki ◽  
Nikolaos S. Christodoulakis
Keyword(s):  
Secretory Structures ◽  
Cytochemical Investigation

Studies onBupleurum L. in India I. Secretory structures in the leaves

1986 ◽  
Vol 97 (7-8) ◽  
pp. 479-487
Author(s):  
Chaitali Chakrabarty ◽  
P. K. Mukherjee
Keyword(s):  
Secretory Structures

Effects of light intensity on the anatomical structure, secretory structures, histochemistry and essential oil composition of Aeollanthus suaveolens Mart. ex Spreng. (Lamiaceae)

2021 ◽  
Vol 95 ◽  
pp. 104224
Author(s):  
Suzana Marques Barbosa ◽  
Natalia do Couto Abreu ◽  
Mozaniel Santana de Oliveira ◽  
Jorddy Nevez Cruz ◽  
Eloisa Helena de Aguiar Andrade ◽  
...  
Keyword(s):  
Light Intensity ◽  
Essential Oil ◽  
Essential Oil Composition ◽  
Anatomical Structure ◽  
Oil Composition ◽  
Secretory Structures

scholarly journals Anatomy of the floral, bract, and foliar nectaries of Triumfetta semitriloba (Tiliaceae)

2005 ◽  
Vol 83 (3) ◽  
pp. 279-286 ◽  
Author(s):  
Carlos André Espolador Leitão ◽  
Renata Maria Strozi Alves Meira ◽  
Aristéa Alves Azevedo ◽  
João Marcos de Araújo ◽  
Kellen Lagares Ferreira Silva ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Type A ◽  
Structural Features ◽  
Floral Bract ◽  
Secretory Structures ◽  
Floral Nectary ◽  
Foliar Anatomy ◽  
Weedy Species ◽  
Floral Nectaries

Triumfetta semitriloba Jacq. (Tiliaceae) is a tropical weedy species with floral nectaries and glands located at the margins of the leaves. The objectives of this work were to describe the anatomy of these secretory structures and to analyze their exudates. Sucrose, glucose, and fructose were identified in the product released by these secretory structures, characterizing them as nectaries. The nectaries of T. semitriloba are of a specialized type; a secretory epidermis comprised of pluricellular and multiserial nectariferous trichomes covers a nectariferous parenchyma, vascularized by phloem and xylem. A mass of phenolic compounds occurs in the head cells of the nectariferous trichomes of the foliar and bract nectaries; however, it is absent in trichomes of the floral nectary. The leaf and bract nectaries differed from those from flowers in their length and diameter. Structural features of the nectaries of T. semitriloba are typical of other taxa of the Malvales.Key words: foliar anatomy, histochemistry, Malvales, nectaries, Tiliaceae, Triumfetta semitriloba.

Changes in internal secretory structures of the kidneys and heterogeneity of the medulla in rats with acute water and salt loading

1991 ◽  
Vol 111 (3) ◽  
pp. 407-410
Author(s):  
B. N. Tsibel' ◽  
A. Ya. Terner ◽  
L. Yu. Raevskaya ◽  
L. S. Vasil'eva
Keyword(s):  
Secretory Structures ◽  
Salt Loading

Effect of Melatonin on Telocytes in the Seminal Vesicle of the Soay Ram: An Immunohistochemical, Ultrastructural and Morphometrical Study

2016 ◽  
Vol 203 (1) ◽  
pp. 29-54 ◽  
Author(s):  
Hanan H. Abd-Elhafeez ◽  
Doaa M. Mokhtar ◽  
Ahmed H.S. Hassan
Keyword(s):  
Close Contact ◽  
Intercellular Junctions ◽  
Secretory Activity ◽  
Treated Group ◽  
Control Group ◽  
Secretory Vesicles ◽  
Melatonin Treatment ◽  
Secretory Structures ◽  
Strong Reaction ◽  
Nonbreeding Season

Telocytes (TCs) are a special type of interstitial cell with characteristic cellular processes that are described in many organs. The current study aimed to investigate TCs in seminal vesicles of the Soay ram responding to melatonin treatment during the nonbreeding season by conventional immunohistochemical stains, and to detect the ultrastructural and morphometrical changes of TCs. TCs in the control group showed a broad range of staining affinity and also reacted positively to CD117/c-kit, CD34, desmin, S-100 protein, and progesterone and estrogen receptors alpha, while after melatonin treatment a strong reaction against these 6 antibodies was recorded. Electron microscopically, TCs in the control group were characterized by a small cell body with distinct long cytoplasmic extensions called telopodes (Tps). Tps had alternation of the thin segment (podomers) and dilated segments (podoms), in which the latter accommodate mitochondria, rough endoplasmic reticulum and caveolae. TCs and their Tps were interconnected by homo- and heterocellular junctions and form a wide network to communicate between different cell types. Tps showed close contact with immune cells, progenitor stem cells, smooth muscle cells and other interstitial cells. Melatonin caused a significant increase in the number of TCs, length of Tps, and number and diameter of secretory vesicles. Also, the melatonin-treated group showed exaggerated secretory activity in the form of a massive release of secretory vesicles from Tps. Moreover, Tps showed an increase in their contact with blood and lymphatic capillaries, nerve endings and Schwann cells. In addition, the shedding of secretory structures (exosomes, ectosomes, and multivesicular bodies) was greater from Tps, which were involved in paracrine signaling in the melatonin-treated group. The length and ramifications of Tps together with the intercellular junctions and the releasing of shed vesicles or exosomes assumed an essential role of TCs in intercellular signaling and coordination. On the basis of their distribution and morphology, we investigated whether the different locations of TCs could be associated with different roles.

Protection and attraction: bracts and secretory structures in reduced inflorescences of Malpighiales

Flora ◽  
2016 ◽  
Vol 220 ◽  
pp. 52-62 ◽  
Author(s):  
Karina Bertechine Gagliardi ◽  
Inês Cordeiro ◽  
Diego Demarco
Keyword(s):  
Secretory Structures

scholarly journals Secretory structures in Cochlospermum regium (Schrank) Pilg. (Bixaceae): Distribution and histochemistry

2014 ◽  
Vol 8 (27) ◽  
pp. 947-952 ◽  
Author(s):  
Filho, S.C. Vasconcelos ◽  
A.L.L. Ferreira, ◽  
J.M. Vasconcelos, ◽  
L.S. SILVA, ◽  
L.C.S. Pereira,
Keyword(s):  
Secretory Structures

Hypericum elodes L. (Clusiaceae): The secretory structures of the flower

2004 ◽  
Vol 52 (1) ◽  
pp. 51-57 ◽  
Author(s):  
STEFANIA BOTTEGA ◽  
FABIO GARBARI ◽  
ANNA MARIA PAGNI
Keyword(s):  
Secretory Structures

Cytochemical investigation of long-term stored maize pollen

Euphytica ◽  
1994 ◽  
Vol 72 (1-2) ◽  
pp. 87-94 ◽  
Author(s):  
I. D. Georgieva ◽  
M. M. Kruleva
Keyword(s):  
Maize Pollen ◽  
Cytochemical Investigation
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