 Journal: Pest Manag . Sci . Citation: V : 00 ( 00 ) P : 0000-00 Year: 0000 Type: ARTICLE Literature: oryza Field: abstract Doc ID: pub00000000 Accession (PMID): 00000000 Abstract: From paddy field observations in 0000 and 0000 , fenoxaprop-P-ethyl resistance in Chinese sprangletop ( Leptochloa chinensis ( L ) Nees ) has been studied using information collected from 00 sites in the Saphan-Sung district of Bangkok , Thailand . The resistant Chinese sprangletop was found in nine rice fields , whereas the susceptible Chinese sprangletop was found in only two rice fields . In greenhouse experiments , both fenoxaprop-P-ethyl-resistant and susceptible Chinese sprangletop from the same location were investigated for 00% growth reduction based on phytotoxicity , plant height and fresh and dry weight . The resistant Chinese sprangletop showed apparent resistance at 00-00 days after herbicide application at a rate of 00 . 0-000 . 0 g AI ha ( -0 ) . The resistance index of resistant Chinese sprangletop was 00-00 times higher than that of the susceptible Chinese sprangletop . In addition , Chinese sprangletop did not exhibit multiple resistance to oxadiazon , propanil and quinclorac . According to acetyl-CoA carboxylase ( ACCase ) assays , the level of ACCase specific activity in the resistant Chinese sprangletop was significantly higher than that in the susceptible Chinese sprangletop . Similarly , the ACCase activity of the resistant Chinese sprangletop was 00 times less sensitive to fenoxaprop-P-ethyl than that of the susceptible Chinese sprangletop , based on the I00 values . The present study of the mechanism responsible for resistance in the biotypes investigated indicated that there was a close association between the concentration-response at the whole-plant level and ACCase sensitivity to fenoxaprop-P-ethyl , and resistance to fenoxaprop-P-ethyl was conferred by a modified ACCase at the target site , as suggested by higher specific activity and less sensitivity to the herbicide . Matching Sentences: [ Sen. 0, subscore: 0.00 ]: From paddy field observations in 0000 and 0000 , fenoxaprop-P-ethyl resistance in Chinese sprangletop ( Leptochloa chinensis ( L ) Nees ) has been studied using information collected from 00 sites in the Saphan-Sung district of Bangkok , Thailand . The resistant Chinese sprangletop was found in nine rice fields , whereas the susceptible Chinese sprangletop was found in only two rice fields . In greenhouse experiments , both fenoxaprop-P-ethyl-resistant and susceptible Chinese sprangletop from the same location were investigated for 00% growth reduction based on phytotoxicity , plant height and fresh and dry weight . The resistant Chinese sprangletop showed apparent resistance at 00-00 days after herbicide application at a rate of 00 . 0-000 . 0 g AI ha ( -0 ) . The resistance index of resistant Chinese sprangletop was 00-00 times higher than that of the susceptible Chinese sprangletop . In addition , Chinese sprangletop did not exhibit multiple resistance to oxadiazon , propanil and quinclorac . According to acetyl-CoA carboxylase ( ACCase ) assays , the level of ACCase specific activity in the resistant Chinese sprangletop was significantly higher than that in the susceptible Chinese sprangletop . Similarly , the ACCase activity of the resistant Chinese sprangletop was 00 times less sensitive to fenoxaprop-P-ethyl than that of the susceptible Chinese sprangletop , based on the I00 values . The present study of the mechanism responsible for resistance in the biotypes investigated indicated that there was a close association between the concentration-response at the whole-plant level and ACCase sensitivity to fenoxaprop-P-ethyl , and resistance to fenoxaprop-P-ethyl was conferred by a modified ACCase at the target site , as suggested by higher specific activity and less sensitivity to the herbicide . [ Sen. 0, subscore: 0.00 ]: From paddy field observations in 0000 and 0000 , fenoxaprop-P-ethyl resistance in Chinese sprangletop ( Leptochloa chinensis ( L ) Nees ) has been studied using information collected from 00 sites in the Saphan-Sung district of Bangkok , Thailand . The resistant Chinese sprangletop was found in nine rice fields , whereas the susceptible Chinese sprangletop was found in only two rice fields . In greenhouse experiments , both fenoxaprop-P-ethyl-resistant and susceptible Chinese sprangletop from the same location were investigated for 00% growth reduction based on phytotoxicity , plant height and fresh and dry weight . The resistant Chinese sprangletop showed apparent resistance at 00-00 days after herbicide application at a rate of 00 . 0-000 . 0 g AI ha ( -0 ) . The resistance index of resistant Chinese sprangletop was 00-00 times higher than that of the susceptible Chinese sprangletop . In addition , Chinese sprangletop did not exhibit multiple resistance to oxadiazon , propanil and quinclorac . According to acetyl-CoA carboxylase ( ACCase ) assays , the level of ACCase specific activity in the resistant Chinese sprangletop was significantly higher than that in the susceptible Chinese sprangletop . Similarly , the ACCase activity of the resistant Chinese sprangletop was 00 times less sensitive to fenoxaprop-P-ethyl than that of the susceptible Chinese sprangletop , based on the I00 values . The present study of the mechanism responsible for resistance in the biotypes investigated indicated that there was a close association between the concentration-response at the whole-plant level and ACCase sensitivity to fenoxaprop-P-ethyl , and resistance to fenoxaprop-P-ethyl was conferred by a modified ACCase at the target site , as suggested by higher specific activity and less sensitivity to the herbicide . [ Sen. 0, subscore: 0.00 ]: From paddy field observations in 0000 and 0000 , fenoxaprop-P-ethyl resistance in Chinese sprangletop ( Leptochloa chinensis ( L ) Nees ) has been studied using information collected from 00 sites in the Saphan-Sung district of Bangkok , Thailand . The resistant Chinese sprangletop was found in nine rice fields , whereas the susceptible Chinese sprangletop was found in only two rice fields . In greenhouse experiments , both fenoxaprop-P-ethyl-resistant and susceptible Chinese sprangletop from the same location were investigated for 00% growth reduction based on phytotoxicity , plant height and fresh and dry weight . The resistant Chinese sprangletop showed apparent resistance at 00-00 days after herbicide application at a rate of 00 . 0-000 . 0 g AI ha ( -0 ) . The resistance index of resistant Chinese sprangletop was 00-00 times higher than that of the susceptible Chinese sprangletop . In addition , Chinese sprangletop did not exhibit multiple resistance to oxadiazon , propanil and quinclorac . According to acetyl-CoA carboxylase ( ACCase ) assays , the level of ACCase specific activity in the resistant Chinese sprangletop was significantly higher than that in the susceptible Chinese sprangletop . Similarly , the ACCase activity of the resistant Chinese sprangletop was 00 times less sensitive to fenoxaprop-P-ethyl than that of the susceptible Chinese sprangletop , based on the I00 values . The present study of the mechanism responsible for resistance in the biotypes investigated indicated that there was a close association between the concentration-response at the whole-plant level and ACCase sensitivity to fenoxaprop-P-ethyl , and resistance to fenoxaprop-P-ethyl was conferred by a modified ACCase at the target site , as suggested by higher specific activity and less sensitivity to the herbicide . [ Sen. 0, subscore: 0.00 ]: From paddy field observations in 0000 and 0000 , fenoxaprop-P-ethyl resistance in Chinese sprangletop ( Leptochloa chinensis ( L ) Nees ) has been studied using information collected from 00 sites in the Saphan-Sung district of Bangkok , Thailand . The resistant Chinese sprangletop was found in nine rice fields , whereas the susceptible Chinese sprangletop was found in only two rice fields . In greenhouse experiments , both fenoxaprop-P-ethyl-resistant and susceptible Chinese sprangletop from the same location were investigated for 00% growth reduction based on phytotoxicity , plant height and fresh and dry weight . The resistant Chinese sprangletop showed apparent resistance at 00-00 days after herbicide application at a rate of 00 . 0-000 . 0 g AI ha ( -0 ) . The resistance index of resistant Chinese sprangletop was 00-00 times higher than that of the susceptible Chinese sprangletop . In addition , Chinese sprangletop did not exhibit multiple resistance to oxadiazon , propanil and quinclorac . According to acetyl-CoA carboxylase ( ACCase ) assays , the level of ACCase specific activity in the resistant Chinese sprangletop was significantly higher than that in the susceptible Chinese sprangletop . Similarly , the ACCase activity of the resistant Chinese sprangletop was 00 times less sensitive to fenoxaprop-P-ethyl than that of the susceptible Chinese sprangletop , based on the I00 values . The present study of the mechanism responsible for resistance in the biotypes investigated indicated that there was a close association between the concentration-response at the whole-plant level and ACCase sensitivity to fenoxaprop-P-ethyl , and resistance to fenoxaprop-P-ethyl was conferred by a modified ACCase at the target site , as suggested by higher specific activity and less sensitivity to the herbicide . [ Sen. 0, subscore: 0.00 ]: From paddy field observations in 0000 and 0000 , fenoxaprop-P-ethyl resistance in Chinese sprangletop ( Leptochloa chinensis ( L ) Nees ) has been studied using information collected from 00 sites in the Saphan-Sung district of Bangkok , Thailand . The resistant Chinese sprangletop was found in nine rice fields , whereas the susceptible Chinese sprangletop was found in only two rice fields . In greenhouse experiments , both fenoxaprop-P-ethyl-resistant and susceptible Chinese sprangletop from the same location were investigated for 00% growth reduction based on phytotoxicity , plant height and fresh and dry weight . The resistant Chinese sprangletop showed apparent resistance at 00-00 days after herbicide application at a rate of 00 . 0-000 . 0 g AI ha ( -0 ) . The resistance index of resistant Chinese sprangletop was 00-00 times higher than that of the susceptible Chinese sprangletop . In addition , Chinese sprangletop did not exhibit multiple resistance to oxadiazon , propanil and quinclorac . According to acetyl-CoA carboxylase ( ACCase ) assays , the level of ACCase specific activity in the resistant Chinese sprangletop was significantly higher than that in the susceptible Chinese sprangletop . Similarly , the ACCase activity of the resistant Chinese sprangletop was 00 times less sensitive to fenoxaprop-P-ethyl than that of the susceptible Chinese sprangletop , based on the I00 values . The present study of the mechanism responsible for resistance in the biotypes investigated indicated that there was a close association between the concentration-response at the whole-plant level and ACCase sensitivity to fenoxaprop-P-ethyl , and resistance to fenoxaprop-P-ethyl was conferred by a modified ACCase at the target site , as suggested by higher specific activity and less sensitivity to the herbicide . [ Sen. 0, subscore: 0.00 ]: From paddy field observations in 0000 and 0000 , fenoxaprop-P-ethyl resistance in Chinese sprangletop ( Leptochloa chinensis ( L ) Nees ) has been studied using information collected from 00 sites in the Saphan-Sung district of Bangkok , Thailand . The resistant Chinese sprangletop was found in nine rice fields , whereas the susceptible Chinese sprangletop was found in only two rice fields . In greenhouse experiments , both fenoxaprop-P-ethyl-resistant and susceptible Chinese sprangletop from the same location were investigated for 00% growth reduction based on phytotoxicity , plant height and fresh and dry weight . The resistant Chinese sprangletop showed apparent resistance at 00-00 days after herbicide application at a rate of 00 . 0-000 . 0 g AI ha ( -0 ) . The resistance index of resistant Chinese sprangletop was 00-00 times higher than that of the susceptible Chinese sprangletop . In addition , Chinese sprangletop did not exhibit multiple resistance to oxadiazon , propanil and quinclorac . According to acetyl-CoA carboxylase ( ACCase ) assays , the level of ACCase specific activity in the resistant Chinese sprangletop was significantly higher than that in the susceptible Chinese sprangletop . Similarly , the ACCase activity of the resistant Chinese sprangletop was 00 times less sensitive to fenoxaprop-P-ethyl than that of the susceptible Chinese sprangletop , based on the I00 values . The present study of the mechanism responsible for resistance in the biotypes investigated indicated that there was a close association between the concentration-response at the whole-plant level and ACCase sensitivity to fenoxaprop-P-ethyl , and resistance to fenoxaprop-P-ethyl was conferred by a modified ACCase at the target site , as suggested by higher specific activity and less sensitivity to the herbicide . [ Sen. 0, subscore: 0.00 ]: From paddy field observations in 0000 and 0000 , fenoxaprop-P-ethyl resistance in Chinese sprangletop ( Leptochloa chinensis ( L ) Nees ) has been studied using information collected from 00 sites in the Saphan-Sung district of Bangkok , Thailand . The resistant Chinese sprangletop was found in nine rice fields , whereas the susceptible Chinese sprangletop was found in only two rice fields . In greenhouse experiments , both fenoxaprop-P-ethyl-resistant and susceptible Chinese sprangletop from the same location were investigated for 00% growth reduction based on phytotoxicity , plant height and fresh and dry weight . The resistant Chinese sprangletop showed apparent resistance at 00-00 days after herbicide application at a rate of 00 . 0-000 . 0 g AI ha ( -0 ) . The resistance index of resistant Chinese sprangletop was 00-00 times higher than that of the susceptible Chinese sprangletop . In addition , Chinese sprangletop did not exhibit multiple resistance to oxadiazon , propanil and quinclorac . According to acetyl-CoA carboxylase ( ACCase ) assays , the level of ACCase specific activity in the resistant Chinese sprangletop was significantly higher than that in the susceptible Chinese sprangletop . Similarly , the ACCase activity of the resistant Chinese sprangletop was 00 times less sensitive to fenoxaprop-P-ethyl than that of the susceptible Chinese sprangletop , based on the I00 values . The present study of the mechanism responsible for resistance in the biotypes investigated indicated that there was a close association between the concentration-response at the whole-plant level and ACCase sensitivity to fenoxaprop-P-ethyl , and resistance to fenoxaprop-P-ethyl was conferred by a modified ACCase at the target site , as suggested by higher specific activity and less sensitivity to the herbicide . [ Sen. 0, subscore: 0.00 ]: From paddy field observations in 0000 and 0000 , fenoxaprop-P-ethyl resistance in Chinese sprangletop ( Leptochloa chinensis ( L ) Nees ) has been studied using information collected from 00 sites in the Saphan-Sung district of Bangkok , Thailand . The resistant Chinese sprangletop was found in nine rice fields , whereas the susceptible Chinese sprangletop was found in only two rice fields . In greenhouse experiments , both fenoxaprop-P-ethyl-resistant and susceptible Chinese sprangletop from the same location were investigated for 00% growth reduction based on phytotoxicity , plant height and fresh and dry weight . The resistant Chinese sprangletop showed apparent resistance at 00-00 days after herbicide application at a rate of 00 . 0-000 . 0 g AI ha ( -0 ) . The resistance index of resistant Chinese sprangletop was 00-00 times higher than that of the susceptible Chinese sprangletop . In addition , Chinese sprangletop did not exhibit multiple resistance to oxadiazon , propanil and quinclorac . According to acetyl-CoA carboxylase ( ACCase ) assays , the level of ACCase specific activity in the resistant Chinese sprangletop was significantly higher than that in the susceptible Chinese sprangletop . Similarly , the ACCase activity of the resistant Chinese sprangletop was 00 times less sensitive to fenoxaprop-P-ethyl than that of the susceptible Chinese sprangletop , based on the I00 values . The present study of the mechanism responsible for resistance in the biotypes investigated indicated that there was a close association between the concentration-response at the whole-plant level and ACCase sensitivity to fenoxaprop-P-ethyl , and resistance to fenoxaprop-P-ethyl was conferred by a modified ACCase at the target site , as suggested by higher specific activity and less sensitivity to the herbicide . Score: 0.00 Title: Field study on exposure and health effects of an organophosphate pesticide for maintaining registration in the Philippines . 