000			02642nab a22003737a 4500
999			_c63112 _d63104
001			63112
003			MX-TxCIM
005			20211006072314.0
008			202101s2020||||xxk|||p|op||||00||0|eng|d
022			_a0022-0957
022			_a1460-2431 (Online)
024	8		_ahttps://doi.org/10.1093/jxb/eraa500
040			_aMX-TxCIM
041			_aeng
100	0		_aLong Li _99678
245	1	0	_aGenetic insights into natural variation underlying salt tolerance in wheat
260			_aOxford (United Kingdom) : _bOxford University Press, _c2020.
500			_aPeer review
500			_aCorrecte proof
520			_aDeveloping salt-tolerant crop varieties is one of the important approaches to cope with increasing soil salinization worldwide. In this study, a diversity panel of 323 wheat accessions and 150 doubled haploid lines were phenotyped for salt-responsive morphological and physiological traits across two growth stages. The comprehensive salt tolerance of each wheat accession was evaluated based on principal component analysis. A total of 269 associated loci for salt-responsive traits and/or salt tolerance indices were identified by genome-wide association studies using 395 675 single nucleotide polymorphisms, among which 22 overlapping loci were simultaneously identified by biparental quantitative trait loci mapping. Two novel candidate genes ROOT NUMBER 1 (TaRN1) and ROOT NUMBER 2 (TaRN2) involved in root responses to salt stress fell within overlapping loci, showing different expression patterns and a frameshift mutation (in TaRN2) in contrasting salt-tolerant wheat genotypes. Moreover, the decline in salt tolerance of Chinese wheat varieties was observed from genetic and phenotypic data. We demonstrate that a haplotype controlling root responses to salt stress has been diminished by strong selection for grain yield, which highlights that linkage drag constrains the salt tolerance of Chinese wheat. This study will facilitate salt-tolerant wheat breeding in terms of elite germplasm, favorable alleles and selection strategies.
546			_aText in English
650		7	_aArtificial Selection _2AGROVOC _98685
650		7	_aQuantitative Trait Loci _2AGROVOC _91853
650		7	_aSalt tolerance _2AGROVOC _98150
650		7	_aWheat _gAGROVOC _2 _91310
700	0		_aZhi Peng _917918
700	0		_aXinguo Mao _94593
700	0		_aJingyi Wang _94594
700	0		_aChaonan Li _917919
700	0		_aXiaoping Chang _94598
700	0		_aRuilian Jing _92023
773	0		_tJournal of Experimental Botany _gIn press _dOxford (United Kingdom) : Oxford University Press, 2020. _x0022-0957 _wu444540
942			_cJA _n0 _2ddc