( However ( , ( ( ( the ( commercial preparations ) ) ( of ( this bacterium ) ) ) ( ( ( ( is ( extracted ( from ( Japanese ( beetle grubs ) ) ) ) ) and ) ( is ( ( most active ) ( against ( this species ) ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB However)) (, ,) (NP (NP (DT the) (JJ commercial) (NNS preparations)) (PP (IN of) (NP (DT this) (NN bacterium)))) (VP (VP (VBZ is) (VP (VBN extracted) (PP (IN from) (NP (JJ Japanese) (NN beetle) (NNS grubs))))) (CC and) (VP (VBZ is) (ADJP (ADJP (RBS most) (JJ active)) (PP (IN against) (NP (DT this) (NN species)))))) (. .)))
However, the commercial preparations of this bacterium is extracted from Japanese beetle grubs and is most active against this species.
(ROOT (S (NP (NNS Bacteria)) (VP (VBP are) (NP (NP (DT the) (RBS most) (JJ numerous) (NNS species)) (PP (IN on) (NP (DT the) (NN planet))))) (. .)))