May 2025 — A comprehensive new chapter published in Sustainable Production of Root and Tuber Crops highlights the urgent global challenge of potato late blight, a devastating plant disease caused by Phytophthora infestans. Authored by an international team of scientists led by Utpal Dey, Dedat Prismantoro, Febri Doni, and colleagues, the paper reviews historical, biological, and technological advances in managing this destructive pathogen.
Late blight is notorious for triggering the Irish famine of the 1840s, and it remains a major barrier to food security today. The disease can wipe out entire potato or tomato fields within weeks, leading to annual economic losses exceeding $6 billion worldwide. Yield losses range from 10% in India to 100% in Pakistan, with severe outbreaks reported across Africa, Asia, Europe, and the Americas.
The study details the biology of P. infestans, its rapid genetic variability, and its ability to adapt to environmental changes. Advances in pathogenomics have revealed how the pathogen uses effector molecules to overcome plant defenses. Management strategies have evolved from heavy reliance on fungicides—which pose environmental and health risks—to integrated approaches combining cultural practices (like crop rotation), resistant varieties, biological control, and precision monitoring tools.
The Importance
Potato is the world’s third most important food crop after rice and wheat, feeding more than a billion people. With climate change intensifying favorable conditions for late blight, the disease threatens both global food supplies and farmer livelihoods.
This review underscores the need for cross-disciplinary strategies that integrate molecular biology, plant breeding, and sustainable agricultural practices. It also calls for stronger international collaboration to track pathogen evolution and deploy resistant cultivars tailored to local conditions. Importantly, reducing reliance on fungicides through eco-friendly methods will help protect both ecosystems and human health.
Connection to the Sustainable Development Goals (SDGs)
The research directly supports SDG 2: Zero Hunger, which emphasizes ending hunger, achieving food security, and promoting sustainable agriculture. By addressing one of the most destructive crop diseases, the study provides pathways to safeguard yields, stabilize farmer incomes, and ensure the availability of nutritious food.
Strengthening late blight management will not only protect potato production but also contribute to global food resilience in the face of climate change and population growth.
Looking Ahead
The authors stress the importance of advanced genomics, early detection technologies, and integrated pest management (IPM) in future control efforts. Investing in resistant varieties, environmentally safe biocontrol agents, and predictive modeling could transform late blight management from reactive to proactive.
As the study concludes, tackling late blight requires a global paradigm shift—from chemical dependency to sustainable, science-driven solutions that protect both crops and the environment.
Link journal: Late blight research global paradigm shifts | 15 | Sustainable Product
05/Bio/2025
