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Çѱ¹ÀܵðÇÐȸ / v.19, no.2, 2005³â, pp.85-94
Çѱ¹Àܵ𿡠¹ß»ýÇÑ ´Þ¶ó½ºÆÌ º´ÀÇ ÁÖ¿ä ¿øÀαÕÀÎ Sclerotinia homoeocarpaÀÇ µ¿Á¤ ¹× Ư¼º
( Identification and Characteristics of Sclerotinia homoeocarpa Causing Dollar Spot Disease in Zoysiagrass )
¹Ú´ë¼·;±è°æ´ö;¿°ÁÖ¸³;¿Àº´¼®;¹Úº´¼±; »ï¼º¿¡¹ö·£µå(ÁÖ)Àܵð ȯ°æ¿¬±¸¼Ò;»ï¼º¿¡¹ö·£µå(ÁÖ)Àܵð ȯ°æ¿¬±¸¼Ò;»ï¼º¿¡¹ö·£µå(ÁÖ)Àܵð ȯ°æ¿¬±¸¼Ò;±Û·»·Î½º °ñÇÁŬ·´;±Û·»·Î½º °ñÇÁŬ·´;
 
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À§¿¡¼­ °ñÇÁÀåÀÇ ¾È¾ç ÁßÁö À̺´ ÀÙ¿¡¼­ ºÐ¸®ÇÑ º´¿ø±ÕÀÎ ´Þ¶ó½ºÆÌ À¯»ç º´¿ø±ÕÀ» ºÐ¸® µ¿Á¤ÇÏ¿´´Ù. 2000³âµµ ±¹³»¿¡ óÀ½ º¸°íµÈ ÀÌÈÄ ÇöÀç±îÁö ¶Ñ·ÇÇÏ°Ô ÁøÀüµÈ ¿¬±¸°¡ º¸°í µÇÁö ¾Ê¾Æ ÇâÈÄ »çÀü ¿¹¹æ°ú ¹ß»ý½Ã ¹æÁ¦ ¹ýÀ» °­±¸Çϱâ À§ÇÔ°ú ¾Æ¿ï·¯ ÄÚ½º°ü¸®ÀÚÀÇ ¸é¹ÐÇÑ °ü½ÉÀ» À¯µµÇϱâ À§ÇÏ¿© º´¿ø±Õ ºÐ¸®, µ¿Á¤ ¹× Ư¼ºÀ» ÇÑÁöÇü Àܵð(Agyostis palustris Huds. cv Penncross)¿¡¼­ ¹ß»ýÇÏ´Â ´Þ¶ó½ºÆÌ º´¿ø±Õ°ú ºñ±³ ½ÇÇèÀ» ½Ç½ÃÇÏ¿´´Ù. 1. ±âÁ¸¿¡ ¾Ë·ÁÁø °Íó·³ Sclerotinia homoeocarpa ¿¡¼­ º¸ÀÌ´Â ¿Âµµ¿¡ ´ëÇÑ ¹Î°¨µµ¸¦ »õ·Î¿î º´¿ø¼º Scz1 ±ÕÁÖ¿¡¼­µµ º¼ ¼öÀÖ¾î Æ¯Á¤¿Âµµ¿¡¼­ÀÇ »ýÀå¾ïÁ¦´Â ¾È¾ç ÁßÁö ´Þ¶ó½ºÆÌ º´ÀÇ ¹ßº´ÇÏ´Â ½Ã±â»Ó¸¸ ¾Æ´Ï¶ó º´¹æÁ¦°ü¸®¿¡ µµ¿òÀÌ µÉ °ÍÀ¸·Î »ý°¢µÈ´Ù. 2. º´¿ø±Õ ±Õ»ç Ư¼º¿¡¼­ ÀüÀÚÇö¹Ì°æ»çÁøÀ¸·Î´Â ±¸º°Çϱ⠾î·Á¿üÀ¸³ª, PDA¹èÁö»ó¿¡¼­ÀÇ Scz1¿Í Scz2 »ö»óÀº µ¿ÀÏÇÑ ¹Ý¸é Scb1±Õ»ç»ö»ó°ú´Â Â÷À̰¡ ³²À¸·Î ÇâÈÄ °£´ÜÇÏ°Ô ±Õ»ç»ö»óÀ¸·Î ½Äº°ÀÌ ¿ëÀÌ ÇÒ °ÍÀÌ´Ù. 3. ½ÇÇè½Ç»ó¿¡¼­ º´¿ø±ÕÀÇ ¾àÁ¦ ¹Î°¨µµ ÃøÁ¤°á°ú´Â ÀÌÇÁ·Îµð¿Â°ú ÇÁ·ÎÇÇÄÚ³ªÁ¹ ¾àÁ¦°¡ ¿ì¼öÇÏ¿´´Ù. 4. º´ Á¢Á¾ ½ÇÇèÀ» ÅëÇÏ¿© ºÐ¸®µÈSczl ±ÕÁÖ°¡ ¾È¾ç ÁßÁö¿¡ ´ëÇÑ ±âÁÖ Æ¯À̼ºÀ» º¸ÀÓÀ¸·Î Á¶ÀÌ½Ã¾Æ ´Þ¶ó½ºÆÌÀÇ ÁÖ¿ä º´¿ø±ÕÀ¸·Î ¹àÇôÁ³´Ù. 5. Scz1ÀÇ º´¿ø¼ºÀº ¾È¾ç ÁßÁö¿¡ ´ëÇÑ ±âÁÖ Æ¯À̼ºÀÌ ³ôÀº °ÍÀ¸·Î ¹àÇôÁ³´Ù.
A fungal isolate was newly collected from Zoysiagrass 'Anyang-Joongji' in small circular patches on a fairway ofa golf course in Korea, which seriously occurred during the early summer period of 2005. The isolate presented on PDAmedium, named Scz1, was closely identical to Sclerotinia homoeocarpa, a casual fungus of dollar spot disease, in cool season turf grasses such as creeping bentgrass. Hereby, this study was accomplished to characterize the isolate and compare it with the fungus, named Scb1, isolated from dollar spot-infected creeping bentgrass (Agrostis palustris Huds. cv Penncross). On PDAmedium, individual mycelial appearance of three isolates was very similar except for the pigment. Mycelial pigments of Scz1 and Scz2 (another analogous isolate collected) were light pinkish on the reverse side of PDA medium but that of Scb1 was dark brownish. In a microscopic study, three isolates were barely distinguishable in the appearance of mycelia. As expected, in the temperaturesensitivity assay, all pathogens were very delicate to $32^{circ}C$ above but not to $30^{circ}C$ below, in which was explained to be one of typical characteristics in S. homoeocarpa. In an artificial inoculation assay, disease symptoms including leaf spots in Zoysiagrass were appeared within 6-7 days after inoculation through the hand inoculation method with the isolate-infested soil. Then the fungus was re-identified from the infected leaf tissues. Interestingly, inoculation of isolate Scz1 gave rise to distinct symptoms in only Zoysiagrass but not in creeping bentgrass 'Penncross' and Kentucky bluegrass 'Midnight'. The observation might be involved in host specific pathogenecity of S. homoeocarpa Scz1 to Zoysiagrass. In a chemical sensitivity assay for the isolate, Scz1, showed a high mycelial inhibition against two fungicides, iprodione and propiconazole. All results described above suggest that S. homoeocarpa Scz1 is a primary pathogen of Zoysia dollar spot disease.
 
Ű¿öµå
Dollar spot disease;ZoysiaDollar Spot;Sclerotinia homoeocarpa;
 
Çѱ¹ÀܵðÇÐȸÁö / v.19, no.2, 2005³â, pp.85-94
Çѱ¹ÀܵðÇÐȸ
ISSN : 1229-3253
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200511722610987)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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