• International Journal of Industrial Entomology and Biomaterials
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• 제14권2호
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• pp.75-80
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• 2007

Ethanolic extracts of twenty-one plant species were tested in vitro for their fungitoxic properties against leaf spot causing pathogen of mulberry Myrothecium roridum by poisoned food technique. Ethanolic extracts of twenty-plant spp. reduced mycelial growth of M. roridum significantly except E. pulcherrima. Highest inhibition of M. roridum colony growth observed in 10% extracts of E. citriodora (49.45%) followed by D. metel (39.45%), Chromolaena odoratum (25.56%) and A. sativum (25.00%). Among the concentration tested, 10% concentration was found significantly higher effective on reducing colony growth followed by 5 and 2.5%. Aqueous extract fresh leaves/bulb of seven short-listed plant spp. (inhibition>15% in ethanolic extracts) revealed that D. metel inhibited (23.43%) followed by E. citriodora (14.66%), C. odoratum (13.53%). On dry leaf extracts D. metel was found more effective than E. citriodora. The results indicated that D. metel, E. citriodora, C. odoratum and A. sativum having high fungitoxicity against M. roridum and ethanolic extract found more effective than aqueous extract.

• Archives of Pharmacal Research
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• 제16권1호
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• pp.62-67
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• 1993

A series of 12 pyrimidine derivatives were prepared and tested in vitro against growth, sporulation and nucleic acids of Fusarium oxysporum f. sp. lycopersici and Helminthosporium oryzae. Intorduction of thiazole ring together with two aryl groups to 2-aminopyrimidine induced drastic toxicity for both fungi. Pyrimidine derivatives with aryl groups were less toxic. Nitro groups were found to enhance the toxicity of the pyrimidine derivatives especially when substituted in ortho-position of the aryl groups. Inhibition of nudeic acids synthesis of both fungi was attributed mainly to the presence of thiazole ring.

• 농약과학회지
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• 제10권3호
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• pp.165-171
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• 2006

2-이미노-1,3-티아졸린 유도체의 분자수정에 의하여 새로운 3-아미노-2-벤질이미노-1,3-티아졸린 화합물 라이브러리를 parallel 합성법에 의해서 합성하고, 대표적인 식물병 6종에 대한 살균력(100 ppm)을 조사하였다. 이들 유도체의 특징은 2-이미노-1,3-티아졸린 골격의 2위치의 이미노기에 벤질기가 3위치에 아미노기가 각각 치환된 것이다. 합성된 화합물 중 일부가 토마토 역병과 벼 도열병에 대하여 선택적인 살균 활성을 나타냈다. 살균력은 벤질기의 3,4-디클로로페닐기에서 기인한 것으로 생각된다.