Asunto(s)
Frutas/genética , Proteínas de Plantas/genética , Polen/genética , Solanum lycopersicum/fisiología , beta-Fructofuranosidasa/genética , Regulación de la Expresión Génica de las Plantas , Solanum lycopersicum/genética , Proteínas de Plantas/metabolismo , Plantas Modificadas Genéticamente , Polen/crecimiento & desarrollo , Polen/metabolismo , Especies Reactivas de Oxígeno/metabolismo , beta-Fructofuranosidasa/metabolismoRESUMEN
In this study, we produced tomato plants overexpressing an invertase inhibitor gene (Sly-INH) from tomato, using a simple and efficient transient transformation system. Compared with control plants, the expression of Sly-INH was highly upregulated in Sly-INH overexpressing plants, as indicated by real-time polymerase chain reaction (PCR). Physiological analysis revealed that Sly-INH inhibited the activity of cell wall invertase (CWIN), which increased sugar accumulation in tomato fruit. Furthermore, Sly-INH mediated sucrose metabolism by regulating CWIN activity. Our results suggest that invertase activity is potentially regulated by the Sly-INH inhibitor at the post-translational level, and they demonstrate that the transient transformation system is an effective method for determining the functions of genes in tomato.
Asunto(s)
Frutas/fisiología , Plantas Modificadas Genéticamente/enzimología , Solanum lycopersicum/fisiología , Sacarosa/metabolismo , beta-Fructofuranosidasa/antagonistas & inhibidores , beta-Fructofuranosidasa/metabolismo , Activación Enzimática , Inhibidores Enzimáticos/metabolismo , Plantas Modificadas Genéticamente/genética , Distribución Tisular , beta-Fructofuranosidasa/genéticaRESUMEN
The aim of this study was to evaluate the associations between the rs3918396 G>A and rs528557 C>G polymorphisms in the disinterring and metalloproteinase domain 33 (ADAM33) gene and asthma risk. We searched CISCOM, CINAHL, Web of Science, PubMed, Google Scholar, EBSCO, Cochrane Library, and CBM databases from inception through August 1st, 2013 without language restrictions. Meta-analysis was performed using the STATA 12.0 software. Crude odds ratios (ORs) with their 95% confidence intervals (95% CI) were calculated. Thirteen case-control studies were included with a total of 7104 asthma patients and 8172 healthy controls. Our meta-analysis results revealed that ADAM33 rs528557 C>G polymorphism was associated with an increased risk of asthma (all p<0.05). However, we found no correlation between the ADAM33 rs3918396 G>A polymorphism and asthma risk (all p>0.05). Subgroup analysis by ethnicity indicated that the ADAM33 rs528557 C>G polymorphism might be strongly associated with an increased risk of asthma among both Caucasian and Asian populations (All p<0.05). No significant association was found between the ADAM33 rs3918396 G>A polymorphism and the risk of asthma among the studied ethnicities (All p>0.05). The present meta-analysis suggests that the ADAM33 rs528557 C>G polymorphism may contribute to susceptibility to asthma. Thus, the ADAM33 rs528557 C>G polymorphism may be utilized as a biomarker for early diagnosis of asthma.
Asunto(s)
Proteínas ADAM/genética , Asma/genética , Asma/etnología , Predisposición Genética a la Enfermedad , Humanos , Factores de RiesgoRESUMEN
Ceramics of Eu1+xBa2-xCu3O7-delta with x = 0.0, 0.05, 0.1, 0.2, 0.3, 0.4, 0.5 and EuBa2-xPrxCu3O7-delta with x=0.0, 0.05, 0.1, 0.2, 0.3, 0.4 have been synthesized and investigated by X-ray diffraction, resistivity, and Raman spectroscopy. The results show that the transition of crystal structure from orthorhombic to tetragonal occurs and the criticaltemperature decreases withthe increase in doping concentration x. The Raman spectra show that the frequency of the Cu(1)-O(4) stretching mode andthe Cu(2)-(2, 3) out-of-phase mode shifts to higher wave number with increasing doping concentration x.
