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RISS 인기검색어
- 검색키워드
- 주제어 : Propanil (검색결과 6 건)
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제초제 Propanil 및 그 분해산물인 DCA(3,4-dichloroaniline)와 Humic Monomer들과의 산화적 짝지움반응
권태동,김장억,Kwon, Tae-Dong,Kim, Jang-Eok 한국응용생명화학회 1998 Applied Biological Chemistry (Appl Biol Chem) Vol.43 No.4
제초제 propanil(3',4'-dichloropropionanilide)과 그 분해산물인 DCA(3,4-dichloroaniline)가 laccase, horseradish peroxidase(HRP) 및 birnessite에 의하여 중개된 oxidative coupling에 의하여 토양 유기물의 구성성분에 병합될 수 있는지를 알기 위하여 토양 유기물의 monomer들과의 반응성을 조사하였다. Propanil 또는 DCA가 단독으로 존재하는 반응조건에서는 산화환원촉매들에 의하여 이들의 전환이 거의 이루어지지 않았거나 상당히 낮은 수준이었다. 그러나 humic monomer들이 있을 때 laccase와 HRP의 경우 propanil은 syringic acid와 DCA는 catechol과 높은 전환율을 나타내었으며, birnessite의 경우 DCA는 protocatechuic acid와 높은 전환율을 나타내었다. DCA의 전환율은 laccase의 경우 catechol과 pH 8.0에서 24시간 동안 반응시킬 때, HRP의 경우 catechol과 pH 3.0에서 2시간 동안 반응시킬 때 가장 높았고, birnessite의 경우 protocatechuic acid와 pH 5.0에서 2시간 동안 반응시킬 때 가장 높았다. Humic monomer의 농도를 증가시킬수록 DCA의 전환율도 증가하였다. Humic monomer 대신 dissolved organic carbon(DOC)이 있을 때 laccase는 DCA를 거의 전환시키지 못 하였으나, HRP는 DCA의 전환율을 크게 증가시켰고, birnessite는 큰 영향을 미치지 않았다. DCA의 전환율은 laccase 단독으로 있을 때 보다 birnessite와 공존할 경우 약 5배 가량 증가된 반면, HRP와 birnessite가 공존할 경우에는 증가되지 않았다. The herbicide propanil and its metabolite, DCA were incubated with oxidative catalysts in the presence or absence of humic monomers to evaluate the incorporation of them into humic substances. Propanil and DCA underwent little or no transformation by oxidatve catalysts in the absence of humic monomers. In the presence of humic monomers, the most effective co-substrate for transformation of propanil was syringic acid by laccase and HRP, that of DCA was catechol by laccase and HRP, and protocatechuic acid by birnessite. The transformation of DCA was the highest when it was incubated with catechol at pH 8.0 during 24 hrs by laccase, and with catechol at pH 3.0 during 2 hrs by HRP, and with protocatechuic acid at pH 5.0 during 2 hrs by birnessite. The DCA transformation increased with increasing concentration of humic monomers. The transformation of DCA was increased with about 5 times when it was incubated with lactase and birnessite together than lactase alone, but that of it was not effected when it was incubated with HRP and birnessite together. When DCA was incubated with dissolved organic carbon in the presence of oxidative catalysts, the transformation of it was not increased by laccase and birnessite but increased by HRP.
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Resistance mechanism of Leptochloa chinensis Nees to propanil
Sahid, Ismail B.,Karso, Juliana,Chuah, Tse-Seng The Korean Society of Weed Science and The Turfgra 2011 Weed Biology and Management Vol.11 No.2
The resistance mechanism of Leptochloa chinensis Nees to propanil was investigated, based on propanil metabolism, aryl acylamidase activity, and chlorophyll fluorescence at the 8 week growth stage of L. chinensis. The concentration of propanil in the leaf and culm extracts of the resistant (R) and susceptible (S) biotypes, as measured by gas chromatography (GC), was found to increase after propanil treatment.The concentration of propanil in the leaf and culm extracts of the S biotype at 72 h was 1.55 and 0.49 ${\mu}g\;mL^{-1}$, respectively. However, a lower concentration of propanil was observed in the R biotype, as compared to that in the S biotype. The residue of 3,4-dichloroaniline, as measured by GC, was detected only in the leaf extracts of the R biotype. In contrast, no residue of 3,4-dichloroaniline was observed in the S biotype. The level of aryl acylamidase in the leaf tissue extracts of the R biotype was ~140% higher than that in the S biotype. The fluorescence studies showed that propanil inhibited the quantum efficiency of the photosystem II in both the R and S biotypes after 2 h of incubation time. However, when the leaf disks were transferred and incubated in deionized water for 48 h, the quantum efficiency increased in the R biotype but decreased in the S biotype. These results suggest that propanil metabolism, enhanced by aryl acylamidase activity, is the most likely factor contributing towards the mechanism of propanil resistance in L. chinensis plants at the 8 week growth stage.
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원옥재(Ok Jae Won),박기웅(Kee Woong Park),박수혁(Su Hyuk Park),엄민용(Min Yong Eom),강광식(Kwang Sik Kang) 충남대학교 농업과학연구소 2015 농업과학연구 Vol.42 No.2
This study was conducted to evaluate the efficacy of herbicide in winter cereal crops, barley and wheat. The efficacy of soil-applied herbicides, linuron EC and pendimethalin, thiobencarb GR was greater than that of butachlor EC. Linuron EC controlled average 95% and pendimethalin, thiobencarb GR controlled average 97% within 150 days after soil-applied treatment. When compared with untreated control, no visual injuries were detected at single and double dosage of linuron EC and pendimethalin, thiobencarb GR. The yield of barley increased in linuron EC and wheat increased in pendimethalin, thiobencarb GR treatments when compared with butachlor EC. The efficacy of foliage treatment, bentazone+propanil ME was greater than that of bentazone SL. Bentazone+propanil ME controlled average 96% in barley and 97% in wheat, within 30 days after foliage treatment. When compared with untreated control, no visual injuries were detected at single and double dosage of bentazone+propanil ME. The yield of barley and wheat increased in bentazone+propanil ME treatments when compared with bentazone SL. Based on these data, combinations of these herbicides could be applied to provide effective weed management in barley and wheat field.
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원옥재(Ok Jae Won),박기웅(Kee Woong Park),박수혁(Su Hyuk Park),엄민용(Min Yong Eom),강광식(Kwang Sik Kang) 충남대학교 농업과학연구소 2015 Korean Journal of Agricultural Science Vol.42 No.2
This study was conducted to evaluate the efficacy of herbicide in winter cereal crops, barley and wheat. The efficacy of soil-applied herbicides, linuron EC and pendimethalin, thiobencarb GR was greater than that of butachlor EC. Linuron EC controlled average 95% and pendimethalin, thiobencarb GR controlled average 97% within 150 days after soil-applied treatment. When compared with untreated control, no visual injuries were detected at single and double dosage of linuron EC and pendimethalin, thiobencarb GR. The yield of barley increased in linuron EC and wheat increased in pendimethalin, thiobencarb GR treatments when compared with butachlor EC. The efficacy of foliage treatment, bentazone+propanil ME was greater than that of bentazone SL. Bentazone+propanil ME controlled average 96% in barley and 97% in wheat, within 30 days after foliage treatment. When compared with untreated control, no visual injuries were detected at single and double dosage of bentazone+propanil ME. The yield of barley and wheat increased in bentazone+propanil ME treatments when compared with bentazone SL. Based on these data, combinations of these herbicides could be applied to provide effective weed management in barley and wheat field.
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