PCBs are still a problem for some marine life

S. Vignieri
2016 Science  
Plant probiotics to the rescue S ome soils protect crops against their microbial attackers without any pesticides or fungicides. Cha et al. investigated the microbial and biochemical basis of this effect in a patch of soil that excluded fungal wilt on strawberry plants, despite 15 years of monoculture. Mixing in the protective soil transferred this suppressive effect into neighboring disease-ridden soils, which gained increasingly better disease-control capacity with successive growing cycles.
more » ... ve growing cycles. A strain of Streptomyces bacteria, a group renowned for producing antibiotics, emerged as the chief agent that suppressed the pathogenic fungi. The Streptomyces produced an interesting large heat-stable thiopeptide antibiotic with antifungal properties. Thus, much like the development of probiotics to combat gut diseases, probiotics for soil should be feasible. -CA
doi:10.1126/science.351.6274.677-c fatcat:ynxchgt6hrczdjjorpdiem5dty