Amaranthus hybridus L. ssp. hybridus in an archaeological site from the initial mid-Holocene in the Southern Argentinian Puna

Arreguez, Guillermo A.; Martínez, Jorge G.; Ponessa, Graciela I.

doi:10.1016/j.quaint.2013.02.035

Cited by 15 publications

(12 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…quitensis y/o A. quitensis (Sauer, 1967;Costea et al, 2001). Se han encontrado semillas y microfósiles con antigüedades que van desde 7000 A. P. hasta el período Inka, lo cual sugiere que tanto sus versiones silvestres como domesticadas han sido aprovechadas por los grupos humanos para fines alimenticios, decorativos y medicinales (Babot, 2011;Arreguez et al, 2013;García et al, 2014;López et al, 2015). En Antofagasta de la Sierra, Noroeste Argentino, microrestos de Amaranthus caudatus han sido registrados hacia el 4500 A. P. (Arreguez et al, 2013).…”

Section: Antecedentes De Los Ta Xones Recuper Ados En Topaterunclassified

Evidencias Arqueobotanicas Tempranas en El Oasis De Calama, El Cementerio Topater 1 (Formativo Medio, 500 Ac-100 Dc, Desierto De Atacama, Norte De Chile)

McRostie

Gallardo

Vidal

et al. 2019

Darwiniana, nueva serie

View full text Add to dashboard Cite

The management of domestic camelids, and the income and cultivation of plants are some of the distinctive features of the Formative period in the Atacama Desert (ca. 3000-1450 A. P.). The increase and regularity of exchange alliances, stabilize a new way of life in which the relationship with the territory acquires new dimensions, while amplifying or at least making more visible the interaction of societies with the plant world. In this article we describe the archaeobotanical record of the Topater 1 cemetery of the oasis of Calama (Loa river), belonging to the middle Formative and dated by radiocarbon around 400 and 200 B. C. The excellent preservation and diversity of plant resources offered, contributes to the knowledge of the archaeobotanical repertoire in the Central-South Andes and to a better understanding of the existing idiosyncrasies during this regional period. The emergence of the first agro-silvopastoril societies of the Atacama Desert is foreseen.

show abstract

Section: Antecedentes De Los Ta Xones Recuper Ados En Topaterunclassified

Evidencias Arqueobotanicas Tempranas en El Oasis De Calama, El Cementerio Topater 1 (Formativo Medio, 500 Ac-100 Dc, Desierto De Atacama, Norte De Chile)

McRostie

Gallardo

Vidal

et al. 2019

Darwiniana, nueva serie

View full text Add to dashboard Cite

show abstract

“…Amaranth is an ancient crop because archaeological evidence in Northern Argentina suggested that wild amaranth seeds were collected and used for human consumption during the initial mid‐Holocene (8000–7000 bp; Arreguez et al . ). In the Aztec empire, amaranth was a highly valued crop and tributes were collected from the farmers that were nearly as high as for maize (Sauer ).…”

Section: Introductionmentioning

confidence: 97%

Genomic and phenotypic evidence for an incomplete domestication of South American grain amaranth (Amaranthus caudatus)

2017

View full text Add to dashboard Cite

The domestication syndrome comprises phenotypic changes that differentiate crops from their wild ancestors. We compared the genomic variation and phenotypic differentiation of the two putative domestication traits seed size and seed colour of the grain amaranth Amaranthus caudatus, which is an ancient crop of South America, and its two close wild relatives and putative ancestors A. hybridus and A. quitensis. Genotyping 119 accessions of the three species from the Andean region using genotyping by sequencing (GBS) resulted in 9485 SNPs that revealed a strong genetic differentiation of cultivated A. caudatus from its two relatives. A. quitensis and A. hybridus accessions did not cluster by their species assignment but formed mixed groups according to their geographic origin in Ecuador and Peru, respectively. A. caudatus had a higher genetic diversity than its close relatives and shared a high proportion of polymorphisms with their wild relatives consistent with the absence of a strong bottleneck or a high level of recent gene flow. Genome sizes and seed sizes were not significantly different between A. caudatus and its relatives, although a genetically distinct group of A. caudatus from Bolivia had significantly larger seeds. We conclude that despite a long history of human cultivation and selection for white grain colour, A. caudatus shows a weak genomic and phenotypic domestication syndrome and proposes that it is an incompletely domesticated crop species either because of weak selection or high levels of gene flow from its sympatric close undomesticated relatives that counteracted the fixation of key domestication traits.

show abstract

“…The taxonomic differentiation of amaranth species is based on morphological traits, in particular on the appearance flower and inflorescence morphology (Sauer 1967). Archaeological findings show that amaranth seeds were collected already 8,000 years ago in South America (Arreguez et al 2013) and 6,000 years ago in North America (MacNeish 1965). Historical accounts suggest that grain amaranths were of similar importance for the agriculture of pre-Colombian societies as maize (Sauer 1967), but amaranth cultivation rapidly declined after the Spanish conquest of the Americas.…”

Section: Introductionmentioning

confidence: 99%

Parallel Seed Color Adaptation during Multiple Domestication Attempts of an Ancient New World Grain

Stetter

Vidal-Villarejo

Schmid

2019

Molecular Biology and Evolution

View full text Add to dashboard Cite

Thousands of plants have been selected as crops, yet, only a few are fully domesticated. The lack of adaptation to agroecological environments of many crop plants with few characteristic domestication traits potentially has genetic causes. Here, we investigate the incomplete domestication of an ancient grain from the Americas, amaranth. Although three grain amaranth species have been cultivated as crop for millennia, all three lack key domestication traits. We sequenced 121 crop and wild individuals to investigate the genomic signature of repeated incomplete adaptation. Our analysis shows that grain amaranth has been domesticated three times from a single wild ancestor. One trait that has been selected during domestication in all three grain species is the seed color, which changed from dark seeds to white seeds. We were able to map the genetic control of the seed color adaptation to two genomic regions on chromosome 3 and 9, employing three independent mapping populations.Within the locus on chromosome 9, we identify a MYB-like transcription factor gene, a known regulator for seed color variation in other plant species. We identify a soft selective sweep in this genomic region in one of the crops species but not in the other two species. The demographic analysis of wild and domesticated amaranths revealed a population bottleneck predating the domestication of grain amaranth. Our results indicate that a reduced level of ancestral genetic variation did not prevent the selection of traits with a simple genetic architecture but may have limited the adaptation of complex domestication traits.

show abstract

Amaranthus hybridus L. ssp. hybridus in an archaeological site from the initial mid-Holocene in the Southern Argentinian Puna

Cited by 15 publications

References 6 publications

Evidencias Arqueobotanicas Tempranas en El Oasis De Calama, El Cementerio Topater 1 (Formativo Medio, 500 Ac-100 Dc, Desierto De Atacama, Norte De Chile)

Evidencias Arqueobotanicas Tempranas en El Oasis De Calama, El Cementerio Topater 1 (Formativo Medio, 500 Ac-100 Dc, Desierto De Atacama, Norte De Chile)

Genomic and phenotypic evidence for an incomplete domestication of South American grain amaranth (Amaranthus caudatus)

Parallel Seed Color Adaptation during Multiple Domestication Attempts of an Ancient New World Grain

Contact Info

Product

Resources

About