Researchers Unveil Promising Solution to Combat Agricultural Threat

Researchers at King Abdullah University of Science and Technology (KAUST) have discovered a potentially game-changing approach to mitigating the impact of Striga hermonthica, a parasitic weed that poses a significant threat to global food security, particularly in Sub-Saharan Africa. By developing formulated strigolactone analogs, the team has shown that it is possible to induce suicidal germination in Striga seeds, reducing emergence by up to 77% in greenhouse studies and by 80% in mini-field trials.

Key Takeaways:

• The research found that germination of Striga seeds relies heavily on signaling molecules released by host roots, primarily strigolactones (SLs).
• Suicidal germination is an effective strategy for reducing Striga seed banks, and the team has developed suitably formulated SL analogs for field application.
• Laboratory germination bioassays showed a significant induction of Striga seed germination, reaching up to 56%.
• Greenhouse pot studies demonstrated a reduction in Striga emergence by up to 77%.
• Mini- and field trials in different infested fields recorded reductions in Striga emergence of up to 80% and 65%, respectively.
• The formulated strigolactone analogs, MP3 and Nijmegen-1, showed promise as effective tools for Striga management in Kenyan agriculture.
• The research concluded that the formulated SL analogs have the potential to reduce Striga infestation in maize fields in Kenya and are promising candidates for use by farmers.

Statistics:

• Reduction in Striga emergence in greenhouse pot studies: up to 77%.
• Reduction in Striga emergence in mini-field trials: up to 80%.
• Reduction in Striga emergence in field trials: up to 65%.
• Number of days for Striga seed germination to occur: 1-42 days (median: 10 days).
• Emergence rate of Striga seeds in laboratory germination bioassays: up to 56%.
• Number of infested fields used in mini- and field trials: 5.

Sources:

• Evaluation of formulated strigolactone analogs for Striga management in Kenyan agriculture. Journal of Agriculture and Food Research, 2025, 21():101921. Publisher: Elsevier. doi-org.sdpl.idm.oclc.org/10.1016/j.jafr.2025.101921
• NewsRx. King Abdullah University of Science and Technology (KAUST) Researchers Advance Knowledge in Agriculture and Food Research (Evaluation of formulated strigolactone analogs for Striga management in Kenyan agriculture). Food Weekly News. June 12, 2025; p 150.