NAA对蜜环菌生长及CAT、SOD活性影响的研究

EFFECT OF NAA ON THE GROWTH OF Armillaria mellea MYCELIUM AND ON THE ACTIVITIES OF CATALASE AND SUPEROXIDE DISMUTASE

低浓度（低于30mg／L）的α－萘乙酸（NAA）能刺激密环菌的生长，其生长量可提高0～47．1％；并促进密环菌中SOD（超氧化物歧化酶）和CAT（过氧化氢酶）活性提高，随NAA处理浓度的增加及时间的延长（0～12d）2酶活性随之增强。过高浓度则2酶活性提高率下降，但仍高于对照。10mg／LNAA处理12dSOD活性提高61．1％，处理16dCAT活性提高54．7％。10mg／LNAA处理时可提高密环菌中可溶性蛋白质含量13．0％～17．4％。

Low concentraion of naphthale acetic acid (NAA) (< 30mg/L) stimulated not only the growth of Armiltaria mellea (Vahl ex Fr. ) Quel with an inreing rate at 0 - 47. 1 %, but also enhanced its suPeroxide dismutase (SOD) and catalase (CAT) activities. It was foun tha the activities of the two enzymes increased as the concentration of NAA increased (0 - 10mg/L) and as the treating time (0 - 18 dsys) prolonged. However, excaseive high concentration of NAA reduced the increasing rate of the two enzymes' activities, but they were still higher than the controls. Treating Armillaria mellea with 10mg/L NAA for 12 days, the SOD activities increase by 61. 1 %. And treating A. mellea for 16 days CAT activities increased by 54. 7%. In addition, treaing A. mellea with NAA at 10mg/L increased souble proteins of A. mellea by 13. 0% - 17. 0 %.