Alleviation effect of GR24, a strigolactone analogue, on low-nitrogen stress in seedlings.

To investigate the efficacy of foliar application of GR24, a strigolactone analogue, in alleviating low-nitrogen stress in , we applied GR24 with different concentrations (0, 1, 5, 10, and 20 μmol·L) to leaves of plants under low nitrogen stress. We evaluated the changes in photosynthetic characteristics of leaves, reactive oxygen metabolism, and nitrogen assimilation in roots. The results showed that shoot biomass of seedling significantly decreased and root-shoot ratio increased under low-nitrogen stress.