2019
DOI: 10.7717/peerj.6815
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Characterization of introgression from the teosinte Zea mays ssp. mexicana to Mexican highland maize

Abstract: Background The spread of maize cultivation to the highlands of central Mexico was accompanied by substantial introgression from the endemic wild teosinte Zea mays ssp. mexicana, prompting the hypothesis that the transfer of beneficial variation facilitated local adaptation. Methods We used whole-genome sequence data to map regions of Zea mays ssp. mexicana introgression in three Mexican highland maize individuals. We generated a genetic linkage map and performed Quantitative Trait Locus mapping in an F2 popu… Show more

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Cited by 30 publications
(45 citation statements)
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“…There was also evidence for admixture between maize (ancestral node or edge) and both parviglumis and mexicana. Those events are well documented (18,(20)(21). More importantly, both French and Spanish teosintes displayed admixture from the Dent maize reference group (Fig.…”
Section: Footprints Of Admixture From Maize To the European Teosintesmentioning
confidence: 63%
See 1 more Smart Citation
“…There was also evidence for admixture between maize (ancestral node or edge) and both parviglumis and mexicana. Those events are well documented (18,(20)(21). More importantly, both French and Spanish teosintes displayed admixture from the Dent maize reference group (Fig.…”
Section: Footprints Of Admixture From Maize To the European Teosintesmentioning
confidence: 63%
“…The geographical distributions of these two subspecies slightly overlap and hybridization occurs (20). Interestingly, gene flow from mexicana to maize has contributed to highland adaptation of maize landraces (21). Field observations in Mexico describe parviglumis as forming large populations in natural and semi-natural habitats, whereas mexicana is mainly observed as a weed within maize fields, where it can cause severe yield loss (22)(23)(24).…”
Section: Introductionmentioning
confidence: 99%
“…Multiple annotations denoting highland teosinte’s influence were reported within this region. These included pcna2 , involved in plant and inflorescence architecture (Studer et al 2017 ); tu1 , linked to the development of large glumes around individual kernels (Wingen et al 2012 ); an annotated gene predicted to synthesize anthocyanin 5-aromatic acyltransferase, potentially involved in conferring dark leaf sheath pigmentation (Lauter et al 2004 ; Paulsmeyer et al 2018 ); and genes cle24 , phos2 , ss5 , o1 and acco20 , all with potential implications with respect to plant morphology, nutrition, grain development and phytohormone biosynthesis (Gonzalez-Segovia et al 2019 ) (Supplementary Information 16 ). Based on their suggestive functions, these annotations may determine yield quality and quantity, and may have been under indirect farmers’ selection when full, large, and well-developed ears produced in the highlands were favored (Table 3 ).…”
Section: Discussionmentioning
confidence: 99%
“…In the grass family (Poaceae) hybridisation and introgression are well studied mainly for economically important plants, such as wheats 17 , 18 , maize 19 , 20 , rice 21 , 22 , barley 23 , 24 , oats 25 , 26 , rye 27 , 28 , sugarcanes 29 , 30 , and sorghums 31 , 32 . Nowadays new molecular markers and technologies that first came to the field of agriculture are becoming widely used in studies of wild populations with little or no previous genomic information.…”
Section: Introductionmentioning
confidence: 99%