Animal interface: the generosity of domestication

The chapter engages with historical processes and contemporary conditions of animal domestication, arguing that domestication might best be seen as at least as much an emotive or affective process as an instrumental one. It draws on the notion of `corporeal generosity’ to suggest that there are ongoing, generative and unpredictable flows between human and animal bodies that live in close proximity, and that animal domestication has resulted in unforeseen transformations in the bodies of both human and animal participants. It is also argued that pathogen exchange between different species is one of the most important unforeseen outcomes of domestication- and should be viewed both as a destructive and a generative process

Close, but not close enough? Audience’s reactions to domesticated distant suffering in international news coverage

The interest in audience responses to mediated distant suffering has been growing in the last decade. Earlier research about the mediation of distant suffering was often morally or theoretically based, or textually informed and recent empirical research has often focused on how the theories and text–based studies resonate with empirical research of the audience. Earlier text–based research has found that journalists domesticate news about distant events to bring such events closer by and thus make them more relevant and appealing. Four types to domesticate news about distant suffering were found; emotional domestication, aid–driven domestication, familiarizing the unfamiliar, and “what are the stakes”. These domestication strategies aim to establish a link between the distant event and the national or local context of the viewer to bring distant events closer to home and to invite the audience to care. Knowledge about the actual audience’s reactions towards domesticated news is lacking. Therefore, central to this study is whether, and how domestication strategies on the production side of the news, are recognized and if these, or other domesticating strategies are employed by the audience to be caring and morally engaged towards the distant victims. In order to study this we conducted ten focus groups (N=51) in January and February 2016, where we showed a news item about the earthquake in Nepal which happened nine months before. The empirical analysis is informed by concepts from the fields of moral and social psychology. For one, according to social psychological traditions, differentiation is made between people’s cognitive (rational) and affective (emotional) reactions towards their social environment. In addition, and more specifically, we used the concepts empathy and sympathy, defined in the field of moral– and social psychology to structurally analyze people’s reaction towards the mediated distant suffering. We also used the social psychologically informed concept of ‘denial’ to study people’s less caring reactions towards the mediated suffering. Based on the empirical results, we propose a two–flow model of domestication, consisting of first–level domestication on the production side by journalists, and second–level domestication where the audience themselves uses strategies of domestication to make sense of distant suffering. In addition, not all domestication strategies were equally, or equally successfully employed by the audience for a better understanding of– or moral engagement towards, the suffering

The bracteatus pineapple genome and domestication of clonally propagated crops

Domestication of clonally propagated crops such as pineapple from South America was hypothesized to be a 'one-step operation'. We sequenced the genome of Ananas comosus var. bracteatus CB5 and assembled 513 Mb into 25 chromosomes with 29,412 genes. Comparison of the genomes of CB5, F153 and MD2 elucidated the genomic basis of fiber production, color formation, sugar accumulation and fruit maturation. We also resequenced 89 Ananas genomes. Cultivars 'Smooth Cayenne' and 'Queen' exhibited ancient and recent admixture, while 'Singapore Spanish' supported a one-step operation of domestication. We identified 25 selective sweeps, including a strong sweep containing a pair of tandemly duplicated bromelain inhibitors. Four candidate genes for self-incompatibility were linked in F153, but were not functional in self-compatible CB5. Our findings support the coexistence of sexual recombination and a one-step operation in the domestication of clonally propagated crops. This work guides the exploration of sexual and asexual domestication trajectories in other clonally propagated crops

Genetic analysis of safflower domestication.

BackgroundSafflower (Carthamus tinctorius L.) is an oilseed crop in the Compositae (a.k.a. Asteraceae) that is valued for its oils rich in unsaturated fatty acids. Here, we present an analysis of the genetic architecture of safflower domestication and compare our findings to those from sunflower (Helianthus annuus L.), an independently domesticated oilseed crop within the same family.We mapped quantitative trait loci (QTL) underlying 24 domestication-related traits in progeny from a cross between safflower and its wild progenitor, Carthamus palaestinus Eig. Also, we compared QTL positions in safflower against those that have been previously identified in cultivated x wild sunflower crosses to identify instances of colocalization.ResultsWe mapped 61 QTL, the vast majority of which (59) exhibited minor or moderate phenotypic effects. The two large-effect QTL corresponded to one each for flower color and leaf spininess. A total of 14 safflower QTL colocalized with previously reported sunflower QTL for the same traits. Of these, QTL for three traits (days to flower, achene length, and number of selfed seed) had cultivar alleles that conferred effects in the same direction in both species.ConclusionsAs has been observed in sunflower, and unlike many other crops, our results suggest that the genetics of safflower domestication is quite complex. Moreover, our comparative mapping results indicate that safflower and sunflower exhibit numerous instances of QTL colocalization, suggesting that parallel trait transitions during domestication may have been driven, at least in part, by parallel genotypic evolution at some of the same underlying genes

Genetic, evolutionary and plant breeding insights from the domestication of maize.

The natural history of maize began nine thousand years ago when Mexican farmers started to collect the seeds of the wild grass, teosinte. Invaluable as a food source, maize permeated Mexican culture and religion. Its domestication eventually led to its adoption as a model organism, aided in large part by its large chromosomes, ease of pollination and growing agricultural importance. Genome comparisons between varieties of maize, teosinte and other grasses are beginning to identify the genes responsible for the domestication of modern maize and are also providing ideas for the breeding of more hardy varieties

Domestication as innovation : the entanglement of techniques, technology and chance in the domestication of cereal crops

The origins of agriculture involved pathways of domestication in which human behaviours and plant genetic adaptations were entangled. These changes resulted in consequences that were unintended at the start of the process. This paper highlights some of the key innovations in human behaviours, such as soil preparation, harvesting and threshing, and how these were coupled with genetic ‘innovations’ within plant populations. We identify a number of ‘traps’ for early cultivators, including the needs for extra labour expenditure on crop-processing and soil fertility maintenance, but also linked gains in terms of potential crop yields. Compilations of quantitative data across a few different crops for the traits of nonshattering and seed size are discussed in terms of the apparently slow process of domestication, and parallels and differences between different regional pathways are identified. We highlight the need to bridge the gap between a Neolithic archaeobotanical focus on domestication and a focus of later periods on crop-processing activities and labour organization. In addition, archaeobotanical data provide a basis for rethinking previous assumptions about how plant genetic data should be related to the origins of agriculture and we contrast two alternative hypotheses: gradual evolution with low selection pressure versus metastable equilibrium that prolonged the persistence of ‘semi-domesticated’ populations. Our revised understanding of the innovations involved in plant domestication highlight the need for new approaches to collecting, modelling and integrating genetic data and archaeobotanical evidence

Soil domestication by rice cultivation results in plant-soil feedback through shifts in soil microbiota.

BackgroundSoils are a key component of agricultural productivity, and soil microbiota determine the availability of many essential plant nutrients. Agricultural domestication of soils, that is, the conversion of previously uncultivated soils to a cultivated state, is frequently accompanied by intensive monoculture, especially in the developing world. However, there is limited understanding of how continuous cultivation alters the structure of prokaryotic soil microbiota after soil domestication, including to what extent crop plants impact soil microbiota composition, and how changes in microbiota composition arising from cultivation affect crop performance.ResultsWe show here that continuous monoculture (> 8 growing seasons) of the major food crop rice under flooded conditions is associated with a pronounced shift in soil bacterial and archaeal microbiota structure towards a more consistent composition, thereby domesticating microbiota of previously uncultivated sites. Aside from the potential effects of agricultural cultivation practices, we provide evidence that rice plants themselves are important drivers of the domestication process, acting through selective enrichment of specific taxa, including methanogenic archaea, in their rhizosphere that differ from those of native plants growing in the same environment. Furthermore, we find that microbiota from soils domesticated by rice cultivation contribute to plant-soil feedback, by imparting a negative effect on rice seedling vigor.ConclusionsSoil domestication through continuous monoculture cultivation of rice results in compositional changes in the soil microbiota, which are in part driven by the rice plants. The consequences include a negative impact on plant performance and increases in greenhouse gas emitting microbes