Crop wild relatives (CWR) are wild plant taxa closely related to a crop. They represent an important source of genetic diversity for the improvement of agronomic traits. In the context of the One Health Initiative, temperate fruit trees are essential for human nutrition and health, yet CWR resources have hitherto been underused. Moreover, fruit tree long lifespan and a current production dominated by a few cultivars make them particularly vulnerable to the effects of global changes. To address this challenge, the FRUITDIV project will monitor, characterise, use, and conserve the diversity of emblematic fruit tree CWR, with a particular emphasis on Malus, Pyrus and Prunus. To better characterise the genetic and phenotypic diversity of CWR fruit trees and identify favourable traits for future introgression into cultivars, FRUITDIV will use a combination of floristic, ethnogeography and population genomics on genebanks and historical European hotspots of diversity. We will then develop new multiomics-based breeding strategies that combine marker-assisted introgression for traits of interest (e.g. resilience, resistance to pests and diseases, fruit quality) with pangenomic prediction and a reduction of CWR-associated genetic load. In addition to breeding programs, FRUITDIV will also work with networks of farmers and associations to help characterise CWR progeny in various pedo-climatic conditions in Europe. An European-wide online platform that provides genotyping and phenotyping data for free will be implemented to promote the use of CWR genitors by breeders and farmers and help disseminate plant material of interest for various usages and cultivation systems. Overall, the FRUITDIV multi-actor approach involving geneticists, forestry officers, germplasm curators, farmers and citizens, will foster the in- and ex-situ conservation of CWR and promote sustainable agricultural practices across Europe.

Over 30% of EU citizens at vulnerable stages and situations in life are at increased risk to transgress from healthy weight to overweight and further to obesity. Though many interventions to tackle obesity have been proposed, they have rarely been effective. The aim of HealthyW8 is to advance the efficacy of current and future efforts and investments in obesity prevention initiatives across Europe. Most interventions suffer from not adapting to personal context (e.g. socioeconomic aspects, host-biological factors, environment, dietary preferences, fitness level etc.), focus only on diet or physical activity alone, do especially overlook emotional aspects, and fail to engage and motivate the user. Thus, initiatives on obesity prevention in policy and practice are often of marginal impact. HealthyW8 will address these shortcomings by iteratively developing, together with stakeholders, a digital-based healthy lifestyle recommender for evidence-based, tailored interventions and tools including a human digital twin to bridge the gap between science, societal actors and stakeholders (e.g. healthcare professionals, food industries, policymakers) and EU citizens. The targeted populations are those undergoing transitions, i.e. schoolchildren (5-10 y, and their parents), young adults (18-25 y) and the elderly (>65 y). In the mid-term, we estimate that with 200,000 HealthyW8 users, we will prevent 10,000 obesity cases/y. In the long run, the impact will be maximized through adopting the project’s proposed methodology, platform and tools by as many EU institutions and entities as possible. HealthyW8 is a highly experienced, synergistic and complementary consortium that will built on a previously developed digital dietary app (LIFANA) and draw on transdisciplinary research in pan-EU multicentre pilots and long-term randomized control trials to achieve its overarching objective of increasing impact of current and future obesity prevention interventions and policies in the EU.