›› 1998, Vol. 41 ›› Issue (-1): 49-54.

• RESEARCH PAPERS • Previous Articles     Next Articles

A PRELIMINARY STUDY ON THE PRORERTIES OF CARBOXYLESTERASE IN TRICHOGRAMMA DENDROLIMI AND T. CHILONIS

Zong Jing Gao Xiwu Zheng Bingzong Zhang Fan Sun Guangzhi   

  • Online:1998-12-20 Published:1998-12-20
  • Contact: Gao Xiwu

Abstract: The biochemical and toxicological properties of carboxylesterase (CarE) were investigated in Trichogramma dendrolimi and T. chilonis. The optimal reaction time of Care with a-NA was 40 minutes. The Care activity mainly distributed in 0-1OD/(mg.min)in T. dendrolimi and1-4OD/(mg. Rain)in T. chilonis respectively. The comparison of Michaelis constants (Km) ofCare between T. dendrolimi and T. chilonis indicated that the affinity of the latter to substrate was stronger than that of the former. There was no significant difference of Care inhibition between T. denclrolimi and T. chilonis when used paraoxon as inhibitor. The inhibition of paraoxon to the carboxylesterase of T. dendrolimi was much stronger than that of TPP.

Key words: Trichogramma dendrolimi, T. chilonis, carboxylesterase, insecticide