大花金挖耳内生菌的分离和抑菌活性筛选_郭小炜.pdfVIP

, 2007, 27( 2) : 0377- 0383 A cta Bot. Bor eal .-Occid ent . Sin . : 1000-4025( 2007) 02-0377-07 1 1, 2 1 1, 2 1, 2 郭小炜, 冯俊涛 , 易晓华 , 王永宏 , 张 兴 ( 1 , 712100; 2 , 712100) : ( Carp esium macrocep halum ) 92 , 68 , 16 , 8 ; , 22 ; 22 , , H-32 10 H- 18Y- 12G-4G-6 0. 5 mgmL- 1 ( ) , 75% ; , H-32 H- 18J- 1Y- 17G-6 2. 0 mgmL- 1 ( ) , 50% . , H-32H- 18 G-6 . : ; ; : Q93-331 : A Isolation of Entophytes in Carp esi um macrocep ha lum and the Screening of Their Antifungal Activity 1 1, 2 1 1, 2 1, 2 GUO Xi o-w ei , FENG Jun- t o , YI Xi o- hu , WANG Yong-hong , ZHANG Xing ( 1 Bior tion l Pesticide Rese rch nd Development Center, Northw est Sc-i Tech Univer sity of Agriculture nd Forestry, Y ngling, Sh nxi 712100, Chin ; 2 Sh nxi Rese rch C enter of Biopesticide E ngineering nd Technology, Y ngling, Sh nxi 712100, Chin ) Abstract: 92 str ins of entophytes w ere isol ted from stems, le ves, fruits, flow er s nd roots of Carp esium macrocep halum . T hey included 68 str ins of entophytic fungi, 16 str ins of entophytic b cteri , 8 str ins of entophytic ctinomy cetes. The nt gonistic tests of ll these 92 str ins showed th t 22 str ins h ve good nt gonistic ction g inst the p thogens of Fusar ium gr aminear um, Botry tis cirerea, Phy top hthor a cap si- ci, Exserohilum turcicum nd Colletotrichum gloeosp or ioid es ; the fungist sis test show ed th t the ento- phytic b cteri H-32 of ferment tion filtr te t the concentr tion of diluted 10 times nd the entophytic fun- g l H- 18, Y- 12, G-4, G-6 cetone extr cts of mycelium t the concentr tion of 0. 5 mgmL- 1 inhibited hyph grow th of both Botrytis cir ere nd Ex serohilum turcicum for more th n 75%.