Agricultural Origins: Centers and Noncenters; A Near Eastern Reappraisal

Abbo, Shahal; Lev‐Yadun, Simcha; Gopher, Avi

doi:10.1080/07352689.2010.502823

Cited by 126 publications

(78 citation statements)

References 89 publications

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“…Although strong selection with rapid evolution of domestication traits within as little as 100-200 y has been suggested (8,9,29), recent archaeological studies have questioned these conclusions, at least for cereal domestication. Red bars frame the period over which morphological changes associated with domestication are first documented and a short, solid red bar represents the latest time by which domestication occurred.…”

Section: Early Domestication Stagesmentioning

confidence: 96%

“…1 and 2). Although often characterized as rapid and the result of explicit human intention (8,9), domestication is a complex process along a continuum of human, plant, and animal relationships that often took place over a long time period and was driven by a mix of ecological, biological, and human cultural factors (2, 3). The process encompassed a wide range of relationships, from commensalism/mutualism to low-level management, and directed control over reproduction (10,11), although these stages did not necessarily progress in a ratchet-like fashion from wild to domestic.…”

Section: Spatial and Temporal Patterns Of Domesticationmentioning

confidence: 99%

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Current perspectives and the future of domestication studies

Larson

Piperno

Allaby

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

638

544

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It is difficult to overstate the cultural and biological impacts that the domestication of plants and animals has had on our species. Fundamental questions regarding where, when, and how many times domestication took place have been of primary interest within a wide range of academic disciplines. Within the last two decades, the advent of new archaeological and genetic techniques has revolutionized our understanding of the pattern and process of domestication and agricultural origins that led to our modern way of life. In the spring of 2011, 25 scholars with a central interest in domestication representing the fields of genetics, archaeobotany, zooarchaeology, geoarchaeology, and archaeology met at the National Evolutionary Synthesis Center to discuss recent domestication research progress and identify challenges for the future. In this introduction to the resulting Special Feature, we present the state of the art in the field by discussing what is known about the spatial and temporal patterns of domestication, and controversies surrounding the speed, intentionality, and evolutionary aspects of the domestication process. We then highlight three key challenges for future research. We conclude by arguing that although recent progress has been impressive, the next decade will yield even more substantial insights not only into how domestication took place, but also when and where it did, and where and why it did not.The domestication of plants and animals was one of the most significant cultural and evolutionary transitions in the ∼200,000-y history of our species. Investigating when, where, and how domestication took place is therefore crucial for understanding the roots of complex societies. Domestication research is equally important to scholars from a wide range of disciplines, from evolutionary biology to sustainability science (1, 2). Research into both the process and spatiotemporal origins of domestication has accelerated significantly over the past decade through archaeological research, advances in DNA/ RNA sequencing technology, and methods used to recover and formally identify changes in interactions among plants and animals leading to domestication (2-4). In the spring of 2011, 25 scholars with a central interest in domestication and representing the fields of genetics, archaeobotany, zooarchaeology, geoarchaeology, and archaeology met at the National Evolutionary Synthesis Center to discuss recent progress in domestication research and identify challenges for the future. Our goal was to begin reconsidering plant and animal domestication within an integrated evolutionary and cultural framework that takes into account not just new genetic and archaeological data, but also ideas related to epigenetics, plasticity, geneby-environment interactions, gene-culture coevolution, and niche construction. Each of these concepts is relevant to understanding phenotypic change, heritability, and selection, and they are all fundamental components of the New Biology (5) and Expanded Modern Evolutionary Synthesis (6).

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Section: Early Domestication Stagesmentioning

confidence: 96%

Section: Spatial and Temporal Patterns Of Domesticationmentioning

confidence: 99%

Current perspectives and the future of domestication studies

Larson

Piperno

Allaby

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

638

544

View full text Add to dashboard Cite

show abstract

“…Recently there has been considerable debate on domestication as a centric/punctuated process in the cradle of agriculture [20][21][22] versus multiple origins over protracted time periods [23][24][25]. Indeed, domesticated crops could have single or multiple origins, linear or reticulate descent from an ancestral population(s), with gene flow within and between wild and domesticated populations throughout the evolution of the crop.…”

Section: Centers Of Crop Origin and Domestication Speedmentioning

confidence: 99%

“…Both show traces of mosaic eastern and western ancestral origins from opposite ends of the Near Eastern Fertile Crescent. While these regions clearly lie outside a discretely defined core area [21], they do occur within "interacting socio-cultural spheres" [22], making it difficult to be certain about their independent, polyphyletic origin. Apple (Malus domestica) was domesticated 4000-10,000 ybp from M. sieversi in the Central Asian Tian Shan mountains and moved to Europe along the Silk Road, hybridizing bidirectionally with wild relatives (M. orientalis, M. sylvestris) at different time points on route [30].…”

Section: Centers Of Crop Origin and Domestication Speedmentioning

confidence: 99%

The Impact of Genetic Changes during Crop Domestication

et al. 2018

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Abstract:Humans have domesticated hundreds of plant and animal species as sources of food, fiber, forage, and tools over the past 12,000 years, with manifold effects on both human society and the genetic structure of the domesticated species. The outcomes of crop domestication were shaped by selection driven by human preferences, cultivation practices, and agricultural environments, as well as other population genetic processes flowing from the ensuing reduction in effective population size. It is obvious that any selection imposes a reduction of diversity, favoring preferred genotypes, such as nonshattering seeds or increased palatability. Furthermore, agricultural practices greatly reduced effective population sizes of crops, allowing genetic drift to alter genotype frequencies. Current advances in molecular technologies, particularly of genome sequencing, provide evidence of human selection acting on numerous loci during and after crop domestication. Population-level molecular analyses also enable us to clarify the demographic histories of the domestication process itself, which, together with expanded archaeological studies, can illuminate the origins of crops. Domesticated plant species are found in 160 taxonomic families. Approximately 2500 species have undergone some degree of domestication, and 250 species are considered to be fully domesticated. The evolutionary trajectory from wild to crop species is a complex process. Archaeological records suggest that there was a period of predomestication cultivation while humans first began the deliberate planting of wild stands that had favorable traits. Later, crops likely diversified as they were grown in new areas, sometimes beyond the climatic niche of their wild relatives. However, the speed and level of human intentionality during domestication remains a topic of active discussion. These processes led to the so-called domestication syndrome, that is, a group of traits that can arise through human preferences for ease of harvest and growth advantages under human propagation. These traits included reduced dispersal ability of seeds and fruits, changes to plant structure, and changes to plant defensive characteristics and palatability. Domestication implies the action of selective sweeps on standing genetic variation, as well as new genetic variation introduced via mutation or introgression. Furthermore, genetic bottlenecks during domestication or during founding events as crops moved away from their centers of origin may have further altered gene pools. To date, a few hundred genes and loci have been identified by classical genetic and association mapping as targets of domestication and postdomestication divergence. However, only a few of these have been characterized, and for even fewer is the role of the wild-type allele in natural populations understood. After domestication, only favorable haplotypes are retained around selected genes, which creates a genetic valley with extremely low genetic diversity. These "selective sweeps" can allow mildly deleterious...

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“…http://dx.doi.org/10.1101/070078 doi: bioRxiv preprint first posted online Aug. 19, 2016; domestication (Negassa, 1985;Molina-Cano et al, 1999;Badr et al, 2000;Morrell and Clegg, 2007;Dai et al, 2012). As regards the number and the timescale of domestication events, one school of thought maintains that Neolithic domestication in the Near East has been a rapid centric innovation (Abbo et al, 2010;Heun et al, 2012;Zohary et al, 2012). Conversely, the archaeobotanical evidence and simulation studies prompted development of the so-called protracted domestication model, which postulates that domestication of the Near Eastern crops has been a slow polyphyletic process dispersed over large territories (Allaby et al, 2008;Fuller et al, 2011Fuller et al, , 2012Purugganan and Fuller 2011).…”

Section: Introductionmentioning

confidence: 99%

Targeted re-sequencing reveals the genomic signatures of multiple barley domestications

Pankin

Altmüller

Becker

et al. 2016

Preprint

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Summary• Barley (Hordeum vulgare L.) is an established model to study domestication of the Fertile Crescent cereals. Recent molecular data suggested that domesticated barley genomes consist of the ancestral blocks descending from multiple wild barley populations. However, the relationship between the mosaic ancestry patterns and the process of domestication itself remained unclear.• To address this knowledge gap, we identified candidate domestication genes using selection scans based on targeted resequencing of 433 wild and domesticated barley accessions. We conducted phylogenetic, population structure, and ancestry analyses to investigate the origin of the domesticated barley haplotypes separately at the neutral and candidate domestication loci.• We discovered multiple selective sweeps that occurred on all barley chromosomes during domestication in the background of several ancestral wild populations. The ancestry analyses demonstrated that, although the ancestral blocks of the domesticated barley genomes descended from all over the Fertile Crescent, the candidate domestication loci originated specifically in its eastern and western parts.• These findings provided first molecular evidence in favor of multiple barley domestications in the Levantine and Zagros clusters of the origin of agriculture.

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Agricultural Origins: Centers and Noncenters; A Near Eastern Reappraisal

Cited by 126 publications

References 89 publications

Current perspectives and the future of domestication studies

Current perspectives and the future of domestication studies

The Impact of Genetic Changes during Crop Domestication

Targeted re-sequencing reveals the genomic signatures of multiple barley domestications

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