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The yield variability of 18 crops, representing 70% of global crop area and two-thirds of global calorific intake, is assessed here at the country level for the impacts of weather (temperature and precipitation) and farm management practices (pesticide and fertilizer application, and irrigation).
The online food delivery and takeaway market is growing in China, serving 406 million customers with 10.0 billion orders in 2018. Here, data from an online food delivery platform, life-cycle environmental impacts of packaging and tableware waste generated across 353 cities in China, and scenarios for paper alternatives and tableware sharing are presented.
High-resolution meta-analysis of cheese microbiomes and corresponding volatilomes provide technological and ecological insights for improving cheese production.
The primary source of human exposure to the highly toxic heavy metal cadmium (Cd) is diet. This study identified a gene encoding a P-type heavy metal ATPase 3 (HvHMA3) that is responsible for Cd accumulation in barley grain. A Sukkula-like transposable element was found to play an important role in upregulating the expression of HvHMA3, thereby decreasing Cd accumulation in the grain.
Industrial insect production is expanding, particularly in regions where insects are not traditionally consumed, but food safety standards remain to be established. Here, potential microbiological contaminants from unprocessed insects are investigated, demonstrating a high risk for foodborne illnesses originating from bacterial spores, but low risk from viruses.
Principles of conservation agriculture are widely promoted for sustainable agricultural intensification, but their effects on crop yields in sub-Saharan Africa are poorly understood. A meta-analysis covering 16 countries quantifies such effects and reveals the conditions under which they are maximized.
Livestock greenhouse gas emissions are key to the sustainability of food systems. A spatially explicit analysis of global livestock supply chains shows large variability of nitrogen use efficiency across species, systems, production intensities and the origin and management of animal feed.
Urinary metabolic phenotyping of 1,848 adults in the United States shows that 46 structurally identified metabolites were influenced by intakes of 67 nutrients, and accurately predicted healthy and unhealthy dietary patterns. These urinary biomarkers are diet-derived, stable, measurable and associated with disease risk, thereby representing an advance on traditional ways of obtaining information about dietary patterns.
Variability in the individual response to dietary interventions has been reported. Here a Dietary Metabotype Score is developed to embody those interindividual responses by coupling data from highly controlled dietary studies with urinary metabolic phenotypes. This score may offer a method to target and to enhance dietary response at the individual level, thereby reducing the burden of diet-related disease at the population level.
Phosphorus cycling pathways and their ability to withstand disturbances are crucial to sustainable and sufficient food production. Ecological network analysis applied to a multi-node cycling network in China reveals the sensitivities and entry points for closing the phosphorus cycle.
Affordability of dietary patterns varies across countries, thereby affecting the levels of animal- and plant-based foods required to satisfy nutritional demands. Using an optimization model, Chungchunlam et al. reveal the components of the least-cost nutritious diet in the United States.
Food pantries are part of the emergency food network in the United States, but they are an understudied component of food access. The Pantry Accessibility Index and Individual Accessibility Index developed here allow measurement of the spatiotemporal availability of these services to the food insecure of south-central Indiana.
Food safety is jeopardized by the global trade in contaminated foods. Huang et al. demonstrate how consumer exposure to the toxic chemical polychlorinated biphenyl-153 (PCB-153) can be modelled and identify regions with high consumer PCB-153 exposure resulting from imported fish consumption.
A ‘foodshed’ model indicates the minimum distance between crop production and consumption globally. Results show that most of the world’s population depends on trade to feed themselves, even under different levels of yield gap closure and food loss reduction.
African swine fever (ASF) is diminishing pork production in East Asia, especially China, but the global economic costs of ASF are unclear. Mason-D’Croz et al. model the effect of Chinese ASF outbreak scenarios on the global pork market, predicting pork, beef and poultry price increases and a decline in per capita calorie intake in China.
Animal skeletal muscle cell culture has the potential to provide new protein sources without the need for conventional animal agriculture. Ben-Ayre et. al. address one of the challenges of growing cell-based meat in vitro by using textured soy protein as an extracellular matrix scaffold. This approach allowed three-dimensional skeletal muscle cell development to produce a meat-like product for human consumption.
Policy packages for reducing the environmental impact of food systems were tested for acceptability through conjoint experiments in China, Germany and the United States. Achieving a sustainable food system may involve unpopular measures, but strategic policy bundling may increase citizen support for these measures.
Perennial crops such as fruits and nuts, important to dietary diversity and nutrition, represent almost 40% of California’s agriculture by economic value. Here, the impacts of climate change and ozone on historical and future yields of perennial crops in California are assessed.
Transgenic rice engineered to increase photosynthetic activity through overproduction of ribulose 1,5-bisphosphate carboxylase–oxygenase (Rubisco) shows increased rice yields, with improved nitrogen-use efficiency, in an experimental paddy field.
Understanding the response of agriculture to heat and moisture stress is essential to adapt food systems under climate change. Using newly available satellite soil moisture data, this study finds that the combined influence of soil moisture and atmospheric evaporative demand is important for accurately predicting US maize yields.