Genome-Wide Characterization of Light-Regulated Gene Expression in Reveals Underlying Complex Photobiology.

is a necrotrophic fungus characterized mainly by its wide host range of infected plants. The deletion of the gene (), which encodes for a blue-light receptor/transcription factor, causes a decrease in virulence, particularly when assays are conducted in the presence of light or photocycles. However, despite ample characterization, the extent of the light-modulated transcriptional responses regulated by BcWCL1 remains unknown.

The Gene Expression Browser.

For comprehensive gene expression analyses of the phytopathogenic fungus , which infects a number of plant taxa and is a cause of substantial agricultural losses worldwide, we developed BEB, a web-based gene Expression Browser. This computationally inexpensive web-based application and its associated database contain manually curated RNA-Seq data for . BEB enables expression analyses of genes of interest under different culture conditions by providing publication-ready heatmaps depicting transcript levels, without requiring advanced computational skills.

A comprehensive transcription factor and DNA-binding motif resource for the construction of gene regulatory networks in and .

and are two relevant fungi in agricultural systems. To gain insights into these organisms' transcriptional gene regulatory networks (GRNs), we generated a manually curated transcription factor (TF) dataset for each of them, followed by a GRN inference utilizing available sequence motifs describing DNA-binding specificity and global gene expression data. As a proof of concept of the usefulness of this resource to pinpoint key transcriptional regulators, we employed publicly available transcriptomics data and a newly generated dual RNA-seq dataset to build context-specific and GRNs under two different biological paradigms: exposure to continuous light and confrontation assays.

Genetic and morphological differentiation of Porphyra and Pyropia species (Bangiales, Rhodophyta) coexisting in a rocky intertidal in Central Chile.

A recent molecular taxonomic study along the Chilean coast (18° S-53° S) described 18 candidate species of bladed Bangiales of which only two were formally described. Few studies focused on local genetic and morphological diversity of bladed Bangiales and attempted to determine their intertidal distribution in contrasting habitats, and none were performed in Chile. To delimit intertidal distributions of genetic species, 66 samples of bladed Bangiales were collected at Maitencillo (32° S) in four zones: a rocky platform, a rocky wall, and two boulders zones surrounded by sandy and rocky bottoms, respectively.