Depletion of Ukraine’s soils threatens long-term global food security
Peer-Reviewed Publication
Updates every hour. Last Updated: 20-Dec-2025 14:11 ET (20-Dec-2025 19:11 GMT/UTC)
Beyond the disruption to Ukraine’s food exports, the war is jeopardising the country’s long-term ability to remain the ‘breadbasket of Europe’, because its soils are gradually losing vital crop nutrients. That is the warning issued by researchers from the UK, Ukraine and the Netherlands who say more nitrogen, phosphorus and potassium* are now being removed from soils via harvested crops than added back in. This is due to reduced access to fertilisers during the war and inefficient farming practices. Military activity has also exacerbated existing degradation and erosion of soils across Ukraine.
In many parts of the world, staple crops such as maize and wheat are dependent on rainfall recycled from land rather than oceans, making them more vulnerable to drought. Researchers at Stanford and the University of California San Diego identified a critical threshold in atmospheric moisture sources that could help predict and prevent future crop failures.
New research shows that modern agriculture is impacting biodiversity inside protected areas in Europe, while some traditional agricultural practices may help preserve it. The Natura 2000 is the largest network of protected areas in the world, established to conserve the most valuables habitats and species in the European Union (EU). Researchers conducted a large-scale survey among Natura 2000 protected area managers across all Europe focusing on management practices, funding and threats to biodiversity facing the Natura 2000 network.
Salicylic acid (SA) plays a pivotal role in plant defense, yet its genetic regulation in tea remains largely unexplored. By analyzing 299 tea accessions through genome-wide association studies (GWAS) and genotyping-by-sequencing (GBS), researchers uncovered a key gene—CsNCED1—that negatively regulates SA-mediated immune responses. Overexpression of this gene increased abscisic acid (ABA) levels and weakened pest resistance by suppressing SA biosynthesis and its receptor signaling pathway. The findings reveal the antagonistic interplay between ABA and SA in determining tea plants’ susceptibility to biotic stress, offering crucial genetic resources for marker-assisted breeding of insect-resistant cultivars.