Antibacterial Activity of Sirodesmin PL Phytotoxin: Application to the Selection of Phytotoxin-Deficient Mutants

Selection of phytotoxin producing rhizobacteria.

In order to select phytotoxin producing rhizobacteria to control weed plants, twenty five bacterial strains previously isolated from the rhizospheres of various plants were grown in a liquid medium and, after cell removal by centrifugation, the liquid phases were freeze-dried and the products were extracted with ethyl acetate/methanol. The extracts were concentrated to dryness under vacuum and ...

Assessment of Resistance to Antibiotics in Pseudomonas syringae pv. syringae Phytotoxin Secretion Mutants

comparison of catalytic activity of heteropoly compounds in the synthesis of bis(indolyl)alkanes.

heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...

Sulfide as a soil phytotoxin—a review

In wetland soils and underwater sediments of marine, brackish and freshwater systems, the strong phytotoxin sulfide may accumulate as a result of microbial reduction of sulfate during anaerobiosis, its level depending on prevailing edaphic conditions. In this review, we compare an extensive body of literature on phytotoxic effects of this reduced sulfur compound in different ecosystem types, an...

The Active Site on the Phytotoxin of Corynebacterium sepedonicum.

Corynebacterium sepedonicum produces an extracellular phytotoxic glycopeptide that possesses a capacity to wilt plant cuttings. It has been previously demonstrated that the integrity of some of the membranes of the host cells is destroyed, suggesting the possibility that a biologically active site is present on the toxin molecule. The toxin was chemically altered in the following ways and then ...