Abastecimiento de nitrógeno en lisianthus (eustoma grandiflorum [raf.] Shinn) cv. Abc2 lavanda

Lisianthus is a species of high economic value due to the attractiveness of its flower, variety of colors and prolonged vase life. However, there is little information regarding its nutrient demands, especially nitrogen. Nitrogen is quantitatively the most important nutrient for the growth of plants. The objectives of the present study were to define nitrogen concentration for optimum growth and quality of lisianthus cv. ABC2 Lavender, to elaborate the curve of nutritional supply of nitrogen to determine the sufficiency concentration, and to determine the distribution of this element within the plant. Lisianthus liners were established in 10 L black polyethylene bags filled with volcanic rock of 3 mm in diameter. The treatments consisted of increasing concentrations of nitrogen: control (no nitrogen), 3, 6, 9, 12, 15 and 18 meq L1; the reminder nutrients were supplied based on Steiner ́s nutrient solution formulation. The experiment was set up in a completely randomized design. The results indicated that for optimum leaf area, height, number of flower buds, dry weight and time to flowering, the best treatment was 6 meq L1 of nitrogen. Concentrations lower than 6 meq L1 and higher than 15 meq L1 caused growth reduction. According to the models for nitrogen supply, the sufficiency range was between 6.4 and 7.4 meq L1, which was associated with a shoot nitrogen concentration of 1.5% to 1.7%, which we proposed as nitrogen sufficiency values for this cultivar. The order of accumulation of biomass was: shootflowersroot; the order of accumulation of nitrogen was: flowersshootroot

A colliding maxillary sinus cancer of adenosquamous carcinoma and small cell neuroendocrine carcinoma - a case report with EGFR copy number analysis

<p>Abstract</p> <p>Background</p> <p>Small cell neuroendocrine carcinoma (SNEC) of maxillary sinus is a rare and aggressive malignancy. A tumor with squamous cell carcinoma, adenocarcinoma and SNEC co-existence is extremely rare.</p> <p>Case presentation</p> <p>We present a colliding tumor of squamous cell, adenocarcinoma and SNEC in maxillary sinus. The clinical features, diagnosis and EGFR flourescence in situ hybridization (FISH) study are presented. A 52-year-old female had a 1-month history of progressing left cheek swelling and purulent rhinorrhea. Magnetic resonance imaging showed a tumor involving left maxilla and orbital floor. Excision of tumor was done and the defect was reconstructed with free flap. The pathology revealed a malignant tumor composed of squamous cell carcinoma, adenocarcinoma and SNEC components. EGFR FISH study showed no gene amplification in 3 components of this tumor. The tumor progressed rapidly and the patient expired at 8 months after surgery.</p> <p>Conclusion</p> <p>A colliding tumor of squamous cell, adenocarcinoma and neuroendocrine carcinoma in maxillary sinus was aggressive in behavior and the treatment response was poor due to the complexity of tumor.</p

BOTÂNICA E FISIOLOGIA/ BOTANY AND PHYSIOLOGY ANTIOXIDANT ACTIVITY AND PHYSICOCHEMICAL PARAMETERS IN ‘CUERNAVAQUEÑA’ MEXICAN PLUM (Spondias purpurea L.) AT DIFFERENT RIPENING STAGES

ABSTRACT Mexican plum (Spondias purpurea L.) ‘Cuernavaqueña’ was harvested at four ripening stages, with the aim of evaluating the concentration of bioactive compounds and antioxidant capacity in the pulp and the epicarp. The highest ethylene production (9.43 mL kg h-1) and total soluble solids concentration (23.9 °Brix) was observed in the fully ripe stage. Titratable acidity was higher in green stage compared to other analyzed ripening stages in both pulp (0.48 %) and epicarp (0.32 %). Fully ripe plum epicarp presented the highest content of total phenols (GAE 190 mg g-1), flavonoids (QE 214 mg g-1), and carotenoids (853 mg g-1) compared to other ripening stages. The antioxidant capacity was higher in the epicarp of the fully ripe fruit compared to the other ripening stages: DPPH (1087 µM TE /100 g), ABTS (1534 µM TE/100 g), and FRAP (1764 µM TE/100 g). Significant correlations (r = 0.60 *** to 0.95 **) between bioactive compounds concentrations and antioxidant activity were obtained

MIBiG 3.0: a community-driven effort to annotate experimentally validated biosynthetic gene clusters

Microbial Biotechnolog