Agroecological genomics and participatory science: optimizing crop mixtures for agricultural diversification.

Abstract

Crops based on mixtures of species or genotypes support yield stability by providing multiple ecosystem services. However, the genetic, molecular, and evolutionary dynamics underlying co-adaptation within such mixtures must be understood to optimize beneficial plant-plant interactions. We therefore propose agroecological genomics as an integrated quantitative and population genetics approach that can be combined with cutting-edge omics methods and participatory science. This strategy embraces the heterogeneity of agroecosystems derived from interactions between biotic and physical environmental components such as climate, crop management, and socio-cultural factors by exploiting decentralized research. The integration of such results will reveal the whole-genome patterns of co-adaptation in crop mixtures, leading to greater knowledge of the key traits that drive adaptation as well as to the development of innovative tools for mixed-crop breeding.