Discontinuities in quinoa biodiversity in the dry Andes an 18 - century perspective based on allelic genotyping

Discontinuities in quinoa biodiversity in the dry Andes an 18 - century perspective based on allelic genotyping

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History and environment shape crop biodiversity, particularly in areas with vulnerable human communities and ecosystems. Tracing crop biodiversity over time helps understand how rural societies cope with anthropogenic or climatic changes. Exceptionally well preserved ancient DNA of quinoa (Chenopodium quinoa Willd.) from the cold and arid Andes of Argentina has allowed us to track changes and continuities in quinoa diversity over 18 centuries, by coupling genotyping of 157 ancient and modern seeds by 24 SSR markers with cluster and coalescence analyses. Cluster analyses revealed clear population patterns separating modern and ancient quinoas. Coalescence-based analyses revealed that genetic drift within a single population cannot explain genetic differentiation among ancient and modern quinoas. The hypothesis of a genetic bottleneck related to the Spanish Conquest also does not seem to apply at a local scale. Instead, the most likely scenario is the replacement of preexisting quinoa gene pools with new ones of lower genetic diversity. This process occurred at least twice in the last 18 centuries: first, between the 6th and 12th centuries— a time of agricultural intensification well before the Inka and Spanish conquests— and then between the 13th century and today—a period marked by farming marginalization in the late 19th century likely due to a severe multidecadal drought. While these processes of local gene pool replacement do not imply losses of genetic diversity at the metapopulation scale, they support the view that gene pool replacement linked to social and environmental changes can result from opposite agricultural trajectories.

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Main Authors: Winkel, Thierry, Aguirre, María Gabriela, Arizio, Carla Marcela, Aschero, Carlos Alberto, Babot, María del Pilar, Benoit, Laure, Burgarella, Concetta, Bertero, Héctor Daniel
Format: Texto biblioteca
Language:eng
Subjects:AGRICULTURAL LAND, AGRICULTURAL WORKER, ALLELE, BIODIVERSITY, BOTTLE NECK, POPULATION, CHENOPODIUM QUINOA, DROUGHT, GENETIC DRIFT, GENETIC VARIABILITY, GENETIC VARIATION, GENOTYPE, NON HUMAN, PLANT GENE, ,
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id KOHA-OAI-AGRO:46128
record_format koha
institution UBA FA
collection Koha
country Argentina
countrycode AR
component Bibliográfico
access En linea
En linea
databasecode cat-ceiba
tag biblioteca
region America del Sur
libraryname Biblioteca Central FAUBA
language eng
topic AGRICULTURAL LAND
AGRICULTURAL WORKER
ALLELE
BIODIVERSITY
BOTTLE NECK
POPULATION
CHENOPODIUM QUINOA
DROUGHT
GENETIC DRIFT
GENETIC VARIABILITY
GENETIC VARIATION
GENOTYPE
NON HUMAN
PLANT GENE

AGRICULTURAL LAND
AGRICULTURAL WORKER
ALLELE
BIODIVERSITY
BOTTLE NECK
POPULATION
CHENOPODIUM QUINOA
DROUGHT
GENETIC DRIFT
GENETIC VARIABILITY
GENETIC VARIATION
GENOTYPE
NON HUMAN
PLANT GENE
spellingShingle AGRICULTURAL LAND
AGRICULTURAL WORKER
ALLELE
BIODIVERSITY
BOTTLE NECK
POPULATION
CHENOPODIUM QUINOA
DROUGHT
GENETIC DRIFT
GENETIC VARIABILITY
GENETIC VARIATION
GENOTYPE
NON HUMAN
PLANT GENE

AGRICULTURAL LAND
AGRICULTURAL WORKER
ALLELE
BIODIVERSITY
BOTTLE NECK
POPULATION
CHENOPODIUM QUINOA
DROUGHT
GENETIC DRIFT
GENETIC VARIABILITY
GENETIC VARIATION
GENOTYPE
NON HUMAN
PLANT GENE
Winkel, Thierry
Aguirre, María Gabriela
Arizio, Carla Marcela
Aschero, Carlos Alberto
Babot, María del Pilar
Benoit, Laure
Burgarella, Concetta
Bertero, Héctor Daniel
Discontinuities in quinoa biodiversity in the dry Andes an 18 - century perspective based on allelic genotyping
description History and environment shape crop biodiversity, particularly in areas with vulnerable human communities and ecosystems. Tracing crop biodiversity over time helps understand how rural societies cope with anthropogenic or climatic changes. Exceptionally well preserved ancient DNA of quinoa (Chenopodium quinoa Willd.) from the cold and arid Andes of Argentina has allowed us to track changes and continuities in quinoa diversity over 18 centuries, by coupling genotyping of 157 ancient and modern seeds by 24 SSR markers with cluster and coalescence analyses. Cluster analyses revealed clear population patterns separating modern and ancient quinoas. Coalescence-based analyses revealed that genetic drift within a single population cannot explain genetic differentiation among ancient and modern quinoas. The hypothesis of a genetic bottleneck related to the Spanish Conquest also does not seem to apply at a local scale. Instead, the most likely scenario is the replacement of preexisting quinoa gene pools with new ones of lower genetic diversity. This process occurred at least twice in the last 18 centuries: first, between the 6th and 12th centuries— a time of agricultural intensification well before the Inka and Spanish conquests— and then between the 13th century and today—a period marked by farming marginalization in the late 19th century likely due to a severe multidecadal drought. While these processes of local gene pool replacement do not imply losses of genetic diversity at the metapopulation scale, they support the view that gene pool replacement linked to social and environmental changes can result from opposite agricultural trajectories.
format Texto
topic_facet
AGRICULTURAL LAND
AGRICULTURAL WORKER
ALLELE
BIODIVERSITY
BOTTLE NECK
POPULATION
CHENOPODIUM QUINOA
DROUGHT
GENETIC DRIFT
GENETIC VARIABILITY
GENETIC VARIATION
GENOTYPE
NON HUMAN
PLANT GENE
author Winkel, Thierry
Aguirre, María Gabriela
Arizio, Carla Marcela
Aschero, Carlos Alberto
Babot, María del Pilar
Benoit, Laure
Burgarella, Concetta
Bertero, Héctor Daniel
author_facet Winkel, Thierry
Aguirre, María Gabriela
Arizio, Carla Marcela
Aschero, Carlos Alberto
Babot, María del Pilar
Benoit, Laure
Burgarella, Concetta
Bertero, Héctor Daniel
author_sort Winkel, Thierry
title Discontinuities in quinoa biodiversity in the dry Andes an 18 - century perspective based on allelic genotyping
title_short Discontinuities in quinoa biodiversity in the dry Andes an 18 - century perspective based on allelic genotyping
title_full Discontinuities in quinoa biodiversity in the dry Andes an 18 - century perspective based on allelic genotyping
title_fullStr Discontinuities in quinoa biodiversity in the dry Andes an 18 - century perspective based on allelic genotyping
title_full_unstemmed Discontinuities in quinoa biodiversity in the dry Andes an 18 - century perspective based on allelic genotyping
title_sort discontinuities in quinoa biodiversity in the dry andes an 18 - century perspective based on allelic genotyping
url http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=46128
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http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
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spelling KOHA-OAI-AGRO:461282023-10-24T12:37:37Zhttp://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=46128http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=AAGDiscontinuities in quinoa biodiversity in the dry Andes an 18 - century perspective based on allelic genotypingWinkel, ThierryAguirre, María GabrielaArizio, Carla MarcelaAschero, Carlos AlbertoBabot, María del PilarBenoit, LaureBurgarella, ConcettaBertero, Héctor Danieltextengapplication/pdfHistory and environment shape crop biodiversity, particularly in areas with vulnerable human communities and ecosystems. Tracing crop biodiversity over time helps understand how rural societies cope with anthropogenic or climatic changes. Exceptionally well preserved ancient DNA of quinoa (Chenopodium quinoa Willd.) from the cold and arid Andes of Argentina has allowed us to track changes and continuities in quinoa diversity over 18 centuries, by coupling genotyping of 157 ancient and modern seeds by 24 SSR markers with cluster and coalescence analyses. Cluster analyses revealed clear population patterns separating modern and ancient quinoas. Coalescence-based analyses revealed that genetic drift within a single population cannot explain genetic differentiation among ancient and modern quinoas. The hypothesis of a genetic bottleneck related to the Spanish Conquest also does not seem to apply at a local scale. Instead, the most likely scenario is the replacement of preexisting quinoa gene pools with new ones of lower genetic diversity. This process occurred at least twice in the last 18 centuries: first, between the 6th and 12th centuries— a time of agricultural intensification well before the Inka and Spanish conquests— and then between the 13th century and today—a period marked by farming marginalization in the late 19th century likely due to a severe multidecadal drought. While these processes of local gene pool replacement do not imply losses of genetic diversity at the metapopulation scale, they support the view that gene pool replacement linked to social and environmental changes can result from opposite agricultural trajectories.History and environment shape crop biodiversity, particularly in areas with vulnerable human communities and ecosystems. Tracing crop biodiversity over time helps understand how rural societies cope with anthropogenic or climatic changes. Exceptionally well preserved ancient DNA of quinoa (Chenopodium quinoa Willd.) from the cold and arid Andes of Argentina has allowed us to track changes and continuities in quinoa diversity over 18 centuries, by coupling genotyping of 157 ancient and modern seeds by 24 SSR markers with cluster and coalescence analyses. Cluster analyses revealed clear population patterns separating modern and ancient quinoas. Coalescence-based analyses revealed that genetic drift within a single population cannot explain genetic differentiation among ancient and modern quinoas. The hypothesis of a genetic bottleneck related to the Spanish Conquest also does not seem to apply at a local scale. Instead, the most likely scenario is the replacement of preexisting quinoa gene pools with new ones of lower genetic diversity. This process occurred at least twice in the last 18 centuries: first, between the 6th and 12th centuries— a time of agricultural intensification well before the Inka and Spanish conquests— and then between the 13th century and today—a period marked by farming marginalization in the late 19th century likely due to a severe multidecadal drought. While these processes of local gene pool replacement do not imply losses of genetic diversity at the metapopulation scale, they support the view that gene pool replacement linked to social and environmental changes can result from opposite agricultural trajectories.AGRICULTURAL LANDAGRICULTURAL WORKERALLELEBIODIVERSITYBOTTLE NECKPOPULATIONCHENOPODIUM QUINOADROUGHTGENETIC DRIFTGENETIC VARIABILITYGENETIC VARIATIONGENOTYPENON HUMANPLANT GENEPlos One

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