Is euro area lowflation here to stay? Insights from a time‐varying parameter model with survey data

We build a time-varying parameter model that jointly explains the dynamics of euro area inflation and inflation expectations. Our goal is to explain the weak inflation during the post-financial crisis economic recovery of 2013-2019. We find that the inclusion of survey data leads to a more muted decline of trend inflation in recent years and more economic slack. Moreover, the impact of economic slack and import prices on inflation has recently strengthened, and survey respondents updated their beliefs more actively over the financial crisis period. Our model compares well against restricted specifications in terms of forecast performance and marginal likelihood

Mathematic model for simulating anthocyanin composition during grape ripening: Another way of phenotyping

Anthocyanins are responsible for grape color, an important quality factor for market acceptance. The relative proportion of cyanidin-based (cyanidin- and peonidin-derivatives) and delphinidin-based (delphinidin-, malvidin- and petunidinderivatives) anthocyanins largely determines the color variation among red/purple/blue colored grape varieties. Anthocyanin biosynthesis is under complex regulation by nutrients, hormones, and environmental cues sensed by the berry. However, the physiological mechanisms underlying these regulations are poorly understood. A dynamic model was developed to simulate the developmental anthocyanin composition in two genotypes and different carbon and nitrogen conditions. This model describes the flux partitioning by basic chemical reaction rules with total anthocyanin as input and reaction rates as parameters. Data were gathered from two experiments, which studied the developmental changes in anthocyanin composition. The model was calibrated for two cultivars under a given growth condition and then validated by applying the model to other conditions for the same cultivar. The model can successfully simulate all the observed modifications in anthocyanin composition throughout berry ripening. This provides an alternative way of phenotyping by dissecting a complicated trait (anthocyanin content and composition) into developmentally stable traits (model parameters)

Low source-sink ratio reduces reserve starch in grapevine woody canes and modulates sugar transport and metabolism at transcriptional and enzyme activity levels

Severe leaf removal decreases storage starch and sucrose in grapevine cv. Cabernet Sauvignon fruiting cuttings and modulates the activity of key enzymes and the expression of sugar transporter genes.The work was supported by European Union Funds (INTERACT-NORTE-01-0145-FEDER-000017-Linha VitalityWineON 0013), Portuguese national funds (FCT-Portuguese Foundation for Science and Technology) under the Project UID/AGR/04033/2013 and the Conseil Interprofessionnel du Vin de Bordeaux (CIVB, France) under the Project CANOGRAPE N 44233. HN (SFRH/BPD/ 115518/2016) was supported by postdoctoral grant from FCT.info:eu-repo/semantics/publishedVersio