37 research outputs found
Giant right ventricular fibroma co-existing atrial septal defect in a 15 year old girl
No full textThe most common benign cardiac tumours are the myxomas, the rhabdomyomas, and the fibromas, with the latter 2 variants being the most common tumours encountered in children. The size and location of tumours within the heart create a variety of clinical findings, such as murmurs, chest pain, tachyarrythmias, and congestive cardiac failure. Nowadays, the tumours are usually diagnosed by echocardiography, magnetic resonance imaging and cardiac catheterization. Surgical excision is the treatment of choice if the tumour causes either arrhythmia or cavitary obstruction. In this report, we describe a giant ventricular fibroma co-existing with an atrial septal defect in a girl aged 15 years. © 2009 Cambridge University Press.De Cobelli F, 2005, CIRCULATION, V112, pE242, DOI 10.1161-CIRCULATIONAHA.104.487231; Dulac Y, 2006, ARCH PEDIATRIE, V13, P1416, DOI 10.1016-j.arcped.2006.06.023; LIN TY, 2004, J CLIN ONCOL, V22, P1153; NATARAJAN P, 1982, CATHETER CARDIO DIAG, V8, P267, DOI 10.1002-ccd.1810080309; Ohashi T, 2006, ANN THORAC SURG, V82, P1512, DOI 10.1016-j.athoracsur.2006.01.101; Paraskevaidis IA, 2003, J THORAC CARDIOV SUR, V126, P913, DOI 10.1016-S0022-5223(03)00356-8; PARMLEY LF, 1988, ANN THORAC SURG, V45, P455; WILLIAMS DB, 1992, J THORAC CARDIOVASC, V84, P23022
L-GLUTATHIONE-REDUCED ENHANCES IN VITRO ROOTING OF APPLE ROOTSTOCK MM106 (Malus domestica Borkh.)
No full textResponses of trifoliate orange (Poncirus trifoliata (L.) Raf.) to continuously and gradually increasing NaCl concentration
No full textThe effect of continuous or gradual stress due to NaCl on in vitro growth, proline and sugar accumulation and nutrient acquisition of trifoliate orange (Poncirus trifoliata (L.) Raf.) explants was studied. Apical shoot tips obtained from previous subculture were transferred to a Murashige and Skoog nutrient medium for proliferation and were exposed to continuous or gradual salinity stress for 42 days. The salt used to induce salinity was NaCl added in six concentrations: 0, 50, 100, 150, 200 and 300 mM. Gradual salinization was achieved by transferring the explants sequentially every week to the above mentioned NaCl concentrations. Most salt treatments had a negative effect on the growth parameters of explants. Sodium concentration of explants increased in all NaCl treatments compared to control and it was higher in the treatments with gradual exposure to salinity. Potassium concentration was reduced, mostly in the treatments with continuous exposure. Calcium and Mg concentrations increased in all saline treatments. In general, the high salinity level in the substrate enhanced the proline and sugar concentrations of the studied explants. In conclusion, salinity had significant impacts on the growth and chemical status of P. trifoliata
Response to increasing rates of boron and NaCl on shoot proliferation and chemical composition of in vitro kiwifruit shoot cultures
No full textFACTORS AFFECTING PROLIFERATION AND ROOTING IN VITRO OF THE PEACH ROOTSTOCK GF-677 AND OF PETUNIA (PETUNIA HYBRIDA)
No full textTHE FACTORS STUDIED IN THIS PH.D THESIS WHICH AFFECT PROLIFERATION AND ROOTING OF IN VITRO CULTURES ARE THE PLANT SPECIES, THE KIND OF PLANT MATERIAL USED, THE TIME OF TANSPLANTING, THE GROWTH REGULATORS USED AND IN GENERAL THE CHEMICAL COMPOSITION OF CULTURE MEDIUM. OTHER FACTORS INCLUDE TEMPERATURE AND CHEMICAL COMPOSITION OF THE ATMOSPHERE OF CULTURE VESSELS, I.E. CONCENTRATION OF ETHYLENEAND CO2. FOR BETTER UNDERSTANDING OF THE EFFECT OF ETHYLENE AND CO2 ON PROLIFERATION AND ROOTING, TWO SPECIES TESTED, NAMELY THE PEACH-ALMOND HYBRID (GF-677)WHICH IS WOODY SPECIES AND PETUNIA HYBRIDA PLANTS (A HERBACEOUS AND ANUAL SPECIES). FROM THIS RESEARCH WE CONCLUDED THAT THE MOST SUITABLE PLANT PART FOR THEINITIATION OF IN VITRO CULTURES OF GF-677 ARE THE HERBACEOUS SHOOT TIPS DERIVED FROM TREES IN CONTAINERS GROWN INTO A GREENHOUSE, DURING WINTER. FROM THE TESTED CYTOKININS BENZYLADENINE (BΑ) GAVE A GREATEST NUMBER OF PLANTLETS IN COMPARISON TO 2IP AT 1 MG/1. HOWEVER, 2IP GAVE LONGER PLANTLETS. THE PLANTLETS OF GF-677 START TO ROOT 12 DAYS AFTER TRANSFERING TO THE ROOTING MEDIUM CONTAINING IBA OR A-NAA. THE PERCENTAGE OF ROOTING WAS 100% AND IBA PRODUCED MORE ROOTS PER PLANT. WHEN SENESCENT CULTURES OF GF-677 WERE EXPOSED TO 3 C FOR 3 WEEKS THEIR PROLIFERATION RATE INCREASED TO 17,6 SHOOTS/CULTURE. ON THE CONTRARY EXPOSURE TO 22 C HAD AS A CONSEQUENCE THE DEATH OF SENESCENT CULTURES. WHEN THE CULTURES WERE PROVIDED WITH ETHYLENE AT A CONCENTRATION OF 0,1 PPM OR AFTER CLOSURE OF CULTURE VESSELS WITH RUBBER STOPPERS THE RATE OF PROLIFERATION AND THE PERCENTAGE OF ROOTING INCREASED. PETUNIA RESPONDED TO 10 PPM ETHYLENE AND GAVE 5 TIMES MORE ROOTS IN COMPARISON TO ZERO ETHYLENE. CO2 AT A CONCENTRATION OF 0,5% IN THEATMOSPHERE OF CULTURE VESSELS OF GF-677 INCREASED BY 50% THE WEIGHT OF CULTURES AND IN SOME CASES THE NUMBER AND LENGTH OF SHOOTS.ΟΙ ΠΑΡΑΓΟΝΤΕΣ ΠΟΥ ΜΕΛΕΤΗΘΗΚΑΝ ΣΤΗΝ ΠΑΡΟΥΣΑ ΔΙΔΑΚΤΟΡΙΚΗ ΔΙΑΤΡΙΒΗ ΚΑΙ ΟΙ ΟΠΟΙΟΙ ΕΠΗΡΕΑΖΟΥΝ ΤΗ ΒΛΑΣΤΟΓΕΝΕΣΗ ΚΑΙ ΡΙΖΟΓΕΝΕΣΗ ΣΕ IN VITRO ΚΑΛΛΙΕΡΓΕΙΕΣ ΕΙΝΑΙ ΤΟ ΕΙΔΟΣ ΤΟΥ ΦΥΤΙΚΟΥ ΥΛΙΚΟΥ, Η ΕΠΟΧΗ ΛΗΨΗΣ ΤΟΥ ΥΠΟΣΤΡΩΜΑΤΟΣ, Η ΘΕΡΜΟΚΡΑΣΙΑ ΚΑΙ Η ΣΥΝΘΕΣΗ ΤΗΣ ΑΤΜΟΣΦΑΙΡΑΣ ΤΩΝ ΣΩΛΗΝΩΝ, ΔΗΛΑΔΗ Η ΣΥΓΚΕΝΤΡΩΣΗ Σ'ΑΥΤΗ ΤΟΥ ΑΙΘΥΛΕΝΙΟΥ ΚΑΙ ΤΟΥ CO2. ΓΙΑ ΠΛΗΡΕΣΤΕΡΗ ΚΑΤΑΝΟΗΣΗ ΤΟΥ ΡΟΛΟΥ ΤΟΥ CO2 ΚΑΙ ΤΟΥ ΑΙΘΥΛΕΝΙΟΥ ΣΤΗ ΒΛΑΣΤΟΓΕΝΕΣΗ ΚΑΙ ΡΙΖΟΓΕΝΕΣΗ ΧΡΗΣΙΜΟΠΟΙΗΘΗΚΑΝ 2 ΕΙΔΗ ΤΟ GF-677 (ΥΒΡΙΔΙΟ ΡΟΔΑΚΙΝΙΑΣ ΧΑΜΥΓΔΑΛΙΑ) ΚΑ ΠΕΤΟΥΝΙΑ (ΠΟΩΔΕΣ ΕΤΗΣΙΟ ΦΥΤΟ). ΑΠΟ ΤΗ ΜΕΛΕΤΗ ΑΥΤΗ ΠΡΟΕΚΥΨΕ ΟΤΙ ΤΟ ΚΑΤΑΛΛΗΛΟΤΕΡΟ ΥΛΙΚΟ ΓΙΑ ΤΟΝ IN VITRO ΠΟΛΛΑΠΛΑΣΙΑΣΜΟ ΤΟΥ GF-677 ΕΙΝΑΙ ΟΙ ΠΟΩΔΕΙΣ ΒΛΑΣΤΙΚΕΣ ΚΟΡΥΦΕΣ ΑΠΟ ΔΕΝΔΡΥΛΛΙΑ ΠΟΥ ΔΙΑΤΗΡΟΥΝΤΑΙ ΤΟ ΧΕΙΜΩΝΑ ΜΕΣΑ ΣΕ ΘΕΡΜΟΚΗΠΙΟ. ΑΠΟ ΤΙΣ ΚΥΤΟΚΙΝΙΝΕΣ Η ΒΑ ΕΔΩΣΕ ΜΕΓΑΛΥΤΕΡΟ ΑΡΙΘΜΟ ΒΛΑΣΤΩΝ ΣΕ ΣΧΕΣΗ ΜΕ ΤΗΝ 2ΙΡ ΟΜΩΣ ΣΕ ΣΥΓΚΕΝΤΡΩΣΗ 1 ΜG/1 ΕΔΩΣΕ ΠΙΟ ΕΠΙΜΗΚΕΙΣ ΒΛΑΣΤΟΥΣ. ΕΠΙΣΗΣ Ο ΜΕΓΙΣΤΟΣ ΑΡΙΘΜΟΣ ΒΛΑΣΤΩΝ ΕΞΑΣΦΑΛΙΣΤΗΚΕ ΜΕ Ο,01 MG/1 IAA. Η ΡΙΖΟΒΟΛΙΑ ΤΟΥ GF-677 ΑΡΧΙΖΕΙ ΤΗ 12Η ΗΜΕΡΑ ΣΕ ΥΠΟΣΤΡΩΜΑ WPM ΚΑΙ ΦΘΑΝΕΙ ΤΟ 100%. ΑΠΟ ΤΙΣ ΑΥΞΙΝΕΣ Η ΙΒΑ ΕΔΩΣΕ ΜΕΓΑΛΥΤΕΡΟ ΑΡΙΘΜΟ ΡΙΖΩΝ ΣΕ ΣΧΕΣΗ ΜΕ ΤΟ Α-ΝΑΑ. ΕΚΘΕΣΗ ΦΘΙΝΟΥΣΩΝ ΚΑΛΛΙΕΡΓΕΙΩΝ ΤΟΥ GF- 677 ΣΕ 3 C ΕΠΙ 3 ΕΒΔΟΜΑΔΕΣ ΑΥΞΗΣΕ ΤΗΝ ΟΡΓΑΝΟΓΕΝΕΤΙΚΗ ΙΚΑΝΟΤΗΤΑ (17,6 ΒΛΑΣΤΟΙ) ΕΝΩ ΣΕ 22 C ΟΙ ΚΑΛΛΙΕΡΓΕΙΕΣ ΔΕΝ ΑΝΑΒΛΑΣΤΗΣΑΝ. ΧΟΡΗΓΗΣΗ ΑΙΘΥΛΕΝΙΟΥ ΣΕ ΣΥΓΚΕΝΤΡΩΣΗ 0,1 ΡΡΜ 'Η ΚΛΕΙΣΙΜΟ ΤΩΝ ΣΩΛΗΝΩΝ ΙΣΤΟΚΑΛΛΙΕΡΓΕΙΑΣ ΜΕ ΕΛΑΣΤΙΚΟ ΠΩΜΑ ΑΥΞΗΣΕ ΤΟΝ ΑΡΙΘΜΟ ΤΩΝ ΒΛΑΣΤΩΝ ΣΤΟ GF-677 ΚΑΘΩΣ ΚΑΙ ΤΟ ΠΟΣΟΣΤΟ ΡΙΖΟΒΟΛΙΑΣ. ΣΤΗΝ ΠΕΤΟΥΝΙΑ ΜΕ 10 ΡΡΜ ΑΙΘΥΛΕΝΙΟΥ Ο ΑΡΙΘΜΟΣ ΡΙΖΩΝ ΥΠΕΡΠΕΝΤΑΠΛΑΣΙΑΣΤΗΚΕ ΤΟ CO2 ΣΕ ΣΥΓΚΕΝΤΡΩΣΗ0,1-0,5% ΣΕ IN VITRO ΚΑΛΛΙΕΡΓΕΙΕΣ ΤΟΥ GF-677 ΑΥΞΗΣΕ ΚΑΤΑ 50% ΤΟ ΒΑΡΟΣ ΤΩΝ ΚΑΛΛΙΕΡΓΕΙΩΝ ΚΑΘΩΣ ΚΑΙ ΤΟΝ ΑΡΙΘΜΟ ΚΑΙ ΜΗΚΟΣ ΒΛΑΣΤΩΝ ΣΕ ΟΡΙΣΜΕΝΕΣ ΜΟΝΟ ΠΕΡΙΠΤΩΣΕΙΣ
Ιn vitro plant regeneration from leaf explants of the cherry rootstocks CAB-6P, Gisela 6, and MxM 14 using sodium nitroprusside
No full textEffects of exogenous l-arginine on in vitro rooting, chlorophyll, carbohydrate, and proline concentrations in the sweet cherry rootstock M × M 14 (Prunus avium L. × Prunus mahaleb L.)
No full textRoot-reducing capacity, rhizosphere acidification, peroxidase and catalase activities and nutrient levels of Citrus taiwanica and C. volkameriana seedlings, under Fe deprivation conditions
No full text– The Fe deficiency created by either deprivation of Fe, low Fe supply or addition of CaCO3/NaHCO3 to Hoagland nutrient solution resulted in significant changes of the physiological and biochemical parameters of the rootstocks C. taiwanica and C. volkameriana. For instance, the lack of Fe and low Fe supply of 3 mM Fe-EDDHA induced an increase in the Fe root-reducing capacity and rhizosphere acidification. Seedlings treated with adequate Fe (20 mM Fe-EDDHA) showed a decline in the Fe-reducing capacity and in rhizosphere acidification. Fe deficiency was associated with a significant decline in peroxidase and catalase activities. Fe deprivation conditions increased the concentration of N, P, Ca, Mg and Mn and reduced the concentration of Fe and Zn in young leaves of both rootstocks. C. volkameriana was found to be more sensitive to Fe chlorosis than C. taiwanica.– Impact de la privation de Fe sur la capacité racinaire de réduction, l’acidification rhizosphérique, l’activité de peroxidase et catalase ainsi que sur le niveau nutritif chez le Citrus taiwanica et le C. volkameriana. Le déficit en fer provoqué par la privation, l’apport à faible dose ou l’addition de CaCO3/NaHCO3 provoque des modifications physiologiques et biochimiques chez les souches du C. taiwanica et du C. volkameriana. Par exemple, le déficit en fer induit une augmentation de la capacité racinaire de réduction du Fe, ainsi qu’une acidification de la rhizosphère. Des plants de semis présentent une diminution de la capacité de réduction du fer lorsqu’ils sont traités avec une quantité suffisante de Fe (20 mM MM Fe-EDDHA). Le déficit en fer est associé à l’activité de la catalase et de la peroxidase. Il est également observé que la privation de Fe augmente la concentration de N, P, Ca, Mg, Mn et diminue celle de Fe et de Zn chez les feuilles jeunes des deux souches. C. volkameriana est plus sensible à la chlorose en fer que C. taiwanica
Inhibitory effects of riboflavin (Vitamin B2) on the in vitro rooting and nutrient concentration of explants of peach rootstock GF 677 (Prunus amygdalus×P. persica)
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