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- W2352802707 abstract "In order to study the molecular mechanism of sensitivity difference in common wheat weeds to tribenuron-methyl, the control effects and molecular difference on ALS and GSTs of 4 wheat weeds to tribenuron-methyl were preliminarily determined. It showed that the sensitivity of Euphorbia helioscopia L. to tribenuron-methyl was the smallest, and Descurainia sophia L. was the strongest. IC50 of tribenuron-methyl to Descurainia sophia L., Capsella bursa-pastoris L., Galium aparine L. and Euphorbia helioscopia L. were 0.29, 1.07, 8.47 and 123.16g ai/hm2, respectively. In vitro, IC50 of Descurainia sophia L. and Euphorbia helioscopia L.’s ALS were respectively 6.40 and 54.90mgai/L. In vivo, ALS specific activities of Descurainia sophia L. were all lower than that of contemporaneous comparisons and decreased to 31.20% of it’s comparison when it was the 9th day after treated with tribenuron-methyl. Although ALS specific activities of Euphorbia helioscopia L. in the first 2 days were slightly falling, it had a rapid increasing tendency on the 3rd day and reached the peak value which was 2.90 times higher than that of comparison on the 4th day, then it renewed the normal level. GSTs activity differed in 4 wheat weeds; after treated with tribenuron-methyl, GSTs relative activities of Euphorbia helioscopia L. and Galium aparine L had obvious enhancement on the 1st day and reached the peak value 1.23, 1.25 on the 4th day, it remained a higher level; although GSTs relative activity of Capsella bursa-pastoris L. and Descurainia sophia L. reached respectively their peak values on the 3rd day and 5th day, the values were all lower than 1 in most days. It was induced that the two important reasons of wheat weeds had different sensitivity to tribenuron-methyl were the difference of sensitivity of ALS and the metabolizing mechanism of GSTs." @default.
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- W2352802707 date "2007-01-01" @default.
- W2352802707 modified "2023-09-27" @default.
- W2352802707 title "Molecular basis of sensitivity difference in wheat weeds to tribenuron-methyl" @default.
- W2352802707 hasPublicationYear "2007" @default.
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