000			02906nab|a22003737a|4500
001			64510
003			MX-TxCIM
005			20211108145555.0
008			202102s2021||||xxk|||p|op||||00||0|eng|d
022			_a2045-2322 (Online)
024	8		_ahttps://doi.org/10.1038/s41598-021-94317-y
040			_aMX-TxCIM
041			_aeng
100	0		_aDongzhi Li _924735
245	1	0	_aCharacterization of resistance and fitness cost of Descurainia sophia L. populations from Henan and Xinjiang, China
260			_aLondon (United Kingdom) : _bNature Publishing Group, _c2021.
500			_aPeer review
500			_aOpen Access
520			_aDescurainia sophia L. is a notorious weed in winter wheat field and has serious resistance to tribenuron-methyl. Xinjiang is a main wheat production region in China with no information on D. sophia resistance to tribenuron-methyl. Here, resistance levels of D. sophia populations to tribenuron-methyl from Xinjiang and Henan were investigated. In addition, homozygous mutation subpopulations of high resistant D. sophia populations from Xinjiang and Henan were generated and then cross-resistance and fitness cost were determined. Results showed that 5 out of 31 populations from Xinjiang developed resistance to tribenuron-methyl, including two high resistant populations (X30 and X31). While 10 out of 11 populations from Henan showed resistance to tribenuron-methyl, including three high resistant populations (H5, H6 and H7). X30 and X31 shared the same mutation type of Pro197Thr in ALS1, while the mutation type of ALS1 in H5, H6 and H7 were Pro197Ser, Pro197His and Pro197Ala, respectively. The homozygous mutation subpopulations (SX30, SX31, SH5, SH6, SH7) showed cross-resistance to flucarbazone-sodium, bensulfuron methyl and flumetsulam. Under monoculture condition, relative growth rates of SX30, SX31 were higher than susceptible population (SX13), while that in SH5, SH6, SH7 were almost same with SX13. When mix planted with SX13, SX30 and SX31 displayed weaker competitiveness than SX13, while SH5, SH6, SH7 showed stronger competitiveness than SX13. The results suggested that D. sophia from Xinjiang had low resistance frequency to tribenuron-methyl and the high resistant populations had fitness costs.
546			_aText in English
650		7	_2AGROVOC _aDescurainia sophia _924736
650		7	_2AGROVOC _aHerbicide resistance _91144
650		7	_2AGROVOC _aTribenuron-methyl _924737
651		7	_2AGROVOC _93990 _aChina
700	0		_aLanfen Xie _924738
700	0		_aPei Zhang _924739
700	0		_aRunqiang Liu _924740
700	0		_aMingwang Shi _924741
700	0		_aYu Mei _924742
700	0		_aLi Xu _924743
773	0		_gv. 11, art. 14655 _dLondon : Nature Publishing Group, 2021. _x2045-2322 _tNature Scientific Reports _wa58025
856	4		_yClick here to access online _uhttps://doi.org/10.1038/s41598-021-94317-y
942			_cJA _n0 _2ddc
999			_c64510 _d64502