The soybean aphid, Aphis glycines Matsumura, is a new pest of soybean, Glycine max (L.) Merr., in North America. It has become widespread on soybean in North America since it was first identified in the Midwest in 2000. Species of Rhamnus L. (buckthorn) are the primary hosts of A. glycines, and soybean is known as a secondary host. There is limited information about the secondary host range of ...

L-glycine and L-cysteine, exhibit strong inhibition of partial purified PPO of wild pear. The concentration of L-glycine inhibiting PPO activity by 50% (IC ) was 0.8 and 0.5 mM for catechol oxidation and 50 0.75 and 0.5 mM for pyrogallol oxidation at pH 5 and 7, respectively. IC for L-cysteine calculated, 0.6 and 0.35 50 for catechol oxidation and 0.55 and 0.75 mM for pyrogallol oxidation at pH...