| A strain of Pseudomonas ( P . putida HS 1 ) was found to resemble P . putida ( arvilla ) mt 2 in its ability to degrade toluene , m and p xylene , 1 , 2 , 4 trimethylbenzene ( pseudocumene ) , and 3 ethyltoluene via oxidation of a methyl substituent and reactions of the meta fission pathway . ^^^ |