US patent for another MBI bioherbicide
The US biopesticide company, Marrone Bio Innovations (MBI - Davis, California), has been granted a US patent for another bioherbicide active ingredient, thaxtomin. The patent (8,476,195) covers thaxtomin A and similar compounds for use as pre- and post-emergence herbicides against most common weeds in cereals and turf in agricultural and residential settings. Thaxtomins are phytotoxins produced by Streptomyces spp bacteria. MBI received US approval for an S acidiscabies-based bioherbicide, MBI-005, last year (Agrow No 640, p 20). Last month, the company received a US patent for sarmentine, the ai in its bioherbicide, MBI-011 (Agrow No 668, p 30). "We are very excited about the broad activity of thaxtomin, either alone or in a synergistic tank mix. With two herbicide active ingredients now patented we are optimistic that MBI will be able to fill the gaps in the underserved bioherbicide product category," says the company's vice-president of research and development, Dr Phyllis Himmel.