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Çѱ¹È¯°æ»ý¹°ÇÐȸ / v.20, no.2, 2002³â, pp.130-135
±æÇ×ÀÛ¿ëÀ» ³ªÅ¸³»´Â Trichoderma harzianum SJG-99721ÀÇ ºÐ¸® ¹× ÇüÅÂÇÐÀû Ư¡
( Isolation and Morphological Characterization of Ttichoderma harzianum SJG-99721, a Powerful Biocontrol Agent )
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PDA¹èÁö¿¡¼­ $25^{circ}C$·Î ¹è¾çÇÒ ¶§ Ãʱ⠱ջçÀÇ »öÀº Èò»öÀ» ¶ç°í ÀÖ¾úÀ¸¸ç ¹è¾ç Èı⿡ »ý¼ºµÇ´Â Æ÷ÀÚÀÇ »öÀº £Àº Ǫ¸¥»öÀ» ³ªÅ¸³»°í ÀÖ¾ú´Ù. ½Ã°£´ç ¼ºÀå·üÀº 1.1mmº¸´Ù ºü¸¥ °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç ¼º¼÷ÇÑ Æ÷ÀÚÀÇ ¸ð¾çÀº ºÎµå·´°í ±¸Çü¿¡ °¡±î¿î ¸ð¾çÀ̾ú´Ù. ÀÌ·¯ÇÑ ÇüÅÂÇÐÀû °á°ú´Â ½Ã°£´ç ¼ºÀå·üÀÌ 0.5-0.7mm ÀÌÇÏÀÎ Tricho-derma viride ¹× T. hamatumÀÇ Æ¯Â¡°ú ¼º¼÷ Æ÷ÀÚÀÇ ¸ð¾çÀÌ ½Ç¸°´õ ¸ð¾çÀÎ T. koningii, T longibrachiatum°ú ±¸º°µÇ´Â °á°ú¿´´Ù(Raifai 1969; Seaby 1996; Gams and Bissett 1998). ¶ÇÇÑ Trichoderma harzianumÀÇ ºÐ·ù¿¡ ÀÖ¾î °¡Àå Áß¿äÇÑ ±¸Á¶´Â phialosporeÀÇ ÇüŰ¡ ±¸ÇüÀ̾î¾ß Çϸç, Æ÷ÀÚÀÇ °ÑÀº ºÎµå·´°í Å©±â´Â $2.5-3.0 imes{3.4-4.0}mu{m}$ Á¤µµÀÎ °ÍÀÌ Æ¯Â¡ÀÌ´Ù(Morris and Doyle 1995a, b). ÀÌ·¯ÇÑ °á°ú¸¦ Á¾ÇÕÇÏ¿© ºÐ¸® ±ÕÁÖ¸¦ µ¿Á¤ÇÑ °á°ú Trichoderma harzianumÀ¸·Î È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. Phytophthora capsici¿¡ ´ëÇÑ ºÐ¸® ±ÕÁÖÀÇ ¼ºÀåÀúÇØÁ¤µµ¸¦ ÃøÁ¤ÇÑ °á°ú $27^circ{C}$ÀÇ Á¶°Ç¿¡¼­ °¡Àå ³ôÀº ±æÇ×·ÂÀ» ³ªÅ¸³»¾úÀ¸¸ç ´Ù¸¥ °õÆÎÀÌ¿¡ ´ëÇÑ ¼ºÀå¾ïÁ¦µµ ÀÌ ¿Âµµ¿¡¼­ °¡Àå ³ôÀ» °ÍÀ¸·Î ÆÇ´ÜµÇ¾ú´Ù. ¶ÇÇÑ $31^circ{C}$ À̻󿡼­´Â T. harzianum SJG-99721ÀÇ ¼ºÀå ¼Óµµ°¡ ±Þ¼ÓÈ÷ ¶³¾îÁüÀ» È®ÀÎÇÑ ¹Ù ÀÌ·¯ÇÑ ¼ºÁúÀ» ÀÌ¿ëÇÏ¿© ´ÀŸ¸®¹ö¼¸ÀÇ ±Õ»ç ¹è¾ç½Ã °í¿Â ¹è¾çÀ» ½Ç½ÃÇÒ °æ¿ì Ǫ¸¥°õÆÎÀÌ º´ ¿À¿°À» ±ØÈ÷ Á¦ÇÑÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î ÆÇ´ÜµÇ¾ú´Ù. ¶ÇÇÑ ÀÌ·¯ÇÑ °í¿Â¿¡¼­ÀÇ ¼ºÀå ¼Óµµ Á¦ÇÑÀº ½Ä¹° º´¿ø¼º ¹Ì»ý¹°°úÀÇ ±æÇ× ÀÛ¿ë¿¡¼­µµ ¿µÇâÀ» ¹ÌÄ¡´Â ¸¸Å­ »ý¹°³ó¾àÀ¸·Î¼­ÀÇ »ç¿ëÀº Åä¾ç ¿Âµµ°¡ $30^circ{C}$ ³ÑÁö ¾Ê´Â ±â°£¿¡ ÃÖ´ëÇÑ Åä¾ç ³»¿¡¼­ Áõ½ÄÀÌ ÀÌ·ç¾îÁöµµ·Ï Á¶Ã³ÇØ¾ß ÇÑ´Ù. Áø±Õ¼º ½Ä¹° º´¿ø±ÕÀÇ ¼¼Æ÷º® ºÐÇØÈ¿¼ÒÀÎ extracellular chitinaseÀÇ ³ôÀº Ȱ¼ºµµ¸¦ È®ÀÎÇÔÀ¸·Î¼­ Trichoderma harzianum SJG-99721ÀÇ °­·ÂÇÑ ½Ä¹° º´¿ø±Õ Á¦¾î´É·ÂÀº À̵éÀÇ ³ôÀº chitinaseÀÇ È°¼ºµµ¿¡ ÀÇÇÑ °ÍÀ¸·Î À¯ÃßÇÒ ¼ö ÀÖ¾ú´Ù.
Species of Genus Trichoderma are commercially applied as biological control agents against fungal Pathogens. A powerful biocontrol agent, Trichoderma sp. SJG-99721 was isolated from 305 isolates by morphological characters, chitinase activities and antifungal activities against Phytophthora capsiei. The isolate was identified as Trichoderma harzianum from various features such as growth rate at $27^circ{C}$, significant growth ratio of $27^circ{C}$ to $17^circ{C}$, amount of aerial mycelium, types of branching: system, and disposition patterns of phialide and phialospore. Trichoderma harzianum SJG-99721 have been shown to act as a powerful biological agent against fungal phytopathogens; Botrytis cinerea, Rhizoctonia solani, Phytophthora cryptogea, Phytophthora capsiei, Sclerotinia sclerotiorum, Mycoshaerella melonis, Alternaria sotani, Fusarium oxysporum, Collectotrichum gloesporioodes, Alternaria alternata, Phythium ultimum, Phytophthora drechsleri, Pyricularia grisea.
 
Ű¿öµå
Antifungal agent;Biocontrol agent;Chitinase activity;Phytophathogenic fungi;Trichoderma harzianum;
 
ȯ°æ»ý¹° / v.20, no.2, 2002³â, pp.130-135
Çѱ¹È¯°æ»ý¹°ÇÐȸ
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921492593)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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