Inflorescence and floral ontogeny in Jasminum fruticans (Oleaceae)

2011 ◽  
Vol 59 (5) ◽  
pp. 498 ◽  
Author(s):  
Mohammad Reza Dadpour ◽  
Somayeh Naghiloo ◽  
Somayeh Faridi Neycharan

The inflorescence and floral ontogeny of the oleaceous tropical bush, Jasminum fruticans L. were studied using epi-illumination light microscopy and compared with other Oleaceae. The flowers are arranged in a thyrsoid inflorescence with a determinate pattern of development. Deviations from the common pathway of floral ontogeny in Oleaceae observed in J. fruticans are characterised by pentamery in calyx and corolla, diagonal position of sepals, some deviation from acropetal and simultaneous initiation of floral organs. Sepals are helically initiated, beginning with the abaxial sepal. Formation of petal lobes from the ring meristem also is not simultaneous with the initiation of three petals before the others. Concurrently with the formation of corolla ring, two stamens are initiated sequentially. Two median carpels are the last organs to be initiated. Unusual features of organ enlargement include the quincuncial-imbricate aestivation of the corolla and formation of trichomes on the distal portion of petals and stamens.

Green ◽  
2015 ◽  
Vol 5 (1-6) ◽  
Author(s):  
Rosaria Ciriminna ◽  
Lorenzo Albanese ◽  
Francesco Meneguzzo ◽  
Mario Pagliaro

AbstractProvided that LED street lighting is guided by quality principles, outdoor illumination using light-emitting diodes will have a significant global impact helping to reduce carbon dioxide emissions, save relevant amounts of electricity and enhance the quality of life in cities as well as in remote areas. This study summarizes recent findings providing guidelines for further progress in this crucially important technology on the common pathway to sustainable development.


2006 ◽  
Vol 7 (3) ◽  
pp. 236
Author(s):  
M. Rugina ◽  
R. Jurcut ◽  
A. Salageanu ◽  
C. Jurcut ◽  
I. Caras ◽  
...  

2003 ◽  
Vol 67 (6) ◽  
pp. 403-408 ◽  
Author(s):  
Keith K. Vaux ◽  
Nathanial C.O. Kahole ◽  
Kenneth Lyons Jones
Keyword(s):  

Obesity ◽  
2012 ◽  
Vol 20 (5) ◽  
pp. 1048-1056 ◽  
Author(s):  
Eva Pardina ◽  
Roser Ferrer ◽  
Joaquín Rivero ◽  
Juan A. Baena-Fustegueras ◽  
Albert Lecube ◽  
...  

Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 2562-2562
Author(s):  
Georg Obermayer ◽  
Taras Afonyushkin ◽  
Florian Puhm ◽  
Michael Schwameis ◽  
Bernd Jilma ◽  
...  

Abstract Increasing evidence demonstrates an important role for immune functions in coagulation and thrombosis, and both microbial and sterile triggers have been implicated in these responses. Oxidation-specific epitopes (OSE) are products of lipid peroxidation that are present on oxidized low-density lipoproteins and dying cells, and represent important sterile triggers of inflammation in cardiovascular diseases. We have previously shown that a large part of naturally occurring IgM antibodies have specificity for OSEs and that 50% of circulating procoagulant microvesicles (MV) carry OSEs, such as malondialdehyde-adducts (MDA), on their surface. Because OSE-specific natural IgM bind MVs and increased levels of circulating MVs have been implicated in an increased thrombotic risk, we studied the capacity of these antibodies in directly modulating the procoagulant potential of MVs in vitro and in vivo. We first showed that increasing concentrations of three different monoclonal IgM antibodies with specificity for MDA (LR04, NA17, E014) significantly delayed MV-induced fibrin formation in plasma, while an MDA-specific IgG antibody or F(ab')2 fragments of LR04 had no effect. Moreover, peak thrombin generation of normal, factor VII- or factor XII- deficient microvesicle poor plasma (MVPP) substituted with tissue factor positive MVs was significantly reduced in the presence of LR04 but not a control IgM antibody, indicating that it exerts its effect on the common pathway of the coagulation cascade. A similar anticoagulatory effect of LR04 was observed in freshly drawn whole blood analyzed by rotational thrombelastometry. Addition of LR04, compared to a control IgM antibody, increased clotting time, clot formation time, and the time to reach maximum clot firmness, and decreased maximum clot firmness. Finally, in a murine pulmonary embolism model, we could show that 30-minute survival of mice that received intravenous injections of epinephrine together with pro-coagulant MVs derived from the pancreatic cancer cell line HPAFII was significantly increased in mice co-injected with LR04 compared to controls. Our study identifies an inhibitory role of MDA-specific IgM antibodies in MV-induced coagulation. These effects are exerted on the common pathway of the coagulation cascade and require the intact structure of IgM antibodies. The findings may offer novel diagnostic and therapeutic approaches in the prevention and treatment of thrombosis. Disclosures No relevant conflicts of interest to declare.


1990 ◽  
Vol 38 (2) ◽  
pp. 173 ◽  
Author(s):  
MA Ali ◽  
S Sakurai ◽  
SP Collin

The retinas of seven galaxiid species collected from different habitats in Tasmania were investigated by light microscopy. There are remarkable differences between Galaxias and Paragalaxias species. The retinas of Galaxias species are characterised by a less dense retinal epithelial pigment (REP), large numbers of short and long rods, the presence of a tapetum, and stable (non-responsive) single cones in dark-adapted specimens. On the other hand, the common retinal features in Paragalaxias species include few large rods and many cones, the presence of a tapetum, lower summation and a pattern of retinomotor responses not unlike that of most other teleosts. There is no striking retinal feature that could be related to differences in their clear or turbid habitats. In spite of its probably being nocturnal, the retinal structure of P. dissimilis is basically similar to that of other diurnal Paragalaxias species. Some of the ecological constraints placed upon these species are also discussed.


1984 ◽  
Vol 62 (6) ◽  
pp. 1172-1176 ◽  
Author(s):  
Renn Tumlison ◽  
V. Rick McDaniel

Examination of the genitalia of male bobcats collected in Arkansas revealed the common occurrence of bacula. The preformed architecture of dense connective tissue and cartilage was evident in juveniles (<1 year). Observed morphological variation in adults was partially ascribed to ontogeny. Maximum dimensions observed were 7.6 mm (length) and 3.1 mm (width). The distal portion of the baculum is a narrow shaft, while the proximal region is expanded and bifurcated ventrally. A vertical septum separates two vacuities in the base of the baculum. These vacuities house the primarily adipose ends of the corpora cavernosa. Morphology of the baculum of the bobcat is similar to that of the European lynx, and, while different from other felids, it indicates validity of the genus Lynx.


Sign in / Sign up

Export Citation Format

Share Document