positive regulation of gene expression positive regulation of response to stimulus positive regulation of RNA metabolic process regulation of production of miRNAs involved in gene silencing by miRNA positive regulation of production of miRNAs involved in gene silencing by miRNA Any process that activates or increases the frequency, rate or extent of production of miRNAs involved in gene silencing by miRNA. positive regulation of gene silencing by miRNA, production of miRNAs positive regulation of miRNA processing positive regulation of miRNA-mediated gene silencing, production of miRNAs positive regulation of microRNA-mediated gene silencing, production of microRNAs positive regulation of production of microRNAs involved in gene silencing by microRNA up regulation of gene silencing by miRNA, production of miRNAs up regulation of miRNA processing up regulation of miRNA-mediated gene silencing, production of miRNAs up regulation of microRNA-mediated gene silencing, production of microRNAs up regulation of production of miRNAs involved in gene silencing by miRNA up regulation of production of microRNAs involved in gene silencing by microRNA up-regulation of gene silencing by miRNA, production of miRNAs up-regulation of miRNA processing up-regulation of miRNA-mediated gene silencing, production of miRNAs up-regulation of microRNA-mediated gene silencing, production of microRNAs up-regulation of production of miRNAs involved in gene silencing by miRNA up-regulation of production of microRNAs involved in gene silencing by microRNA upregulation of gene silencing by miRNA, production of miRNAs upregulation of miRNA processing upregulation of miRNA-mediated gene silencing, production of miRNAs upregulation of microRNA-mediated gene silencing, production of microRNAs upregulation of production of miRNAs involved in gene silencing by miRNA upregulation of production of microRNAs involved in gene silencing by microRNA positive regulation of gene silencing by miRNA