Genomic evidence is increasingly underpinning that hybridization between taxa is commonplace, challenging our views on the mechanisms that maintain their boundaries. Here, we focus on seven catadromous eel species (genus Anguilla), and use genome-wide sequence data from more than 450 individuals sampled across the tropical Indo-Pacific, morphological information, and three newly assembled draft genomes to compare contemporary patterns of hybridization with signatures of past gene flow across a time-calibrated phylogeny. We show that the seven...

Bacteria that exhibit ionic-liquid (IL) tolerance are useful in chemical industries using renewable carbon sources pretreated by ILs to produce biofuels and fine chemicals. Although an IL, 1-butyl-3-methylimidazolium chloride ([BMIM]Cl), has a remarkable ability to solubilize wood components, [BMIM]Cl inhibits the growth of various bacterial hosts useful for bioconversion. We previously isolated a 10% [BMIM]Cl-tolerant bacterium Bacillus amyloliquefaciens CMW1. Here we report novel mechanisms of tolerance to [BMIM]Cl in strain CMW1 and a novel major...