There is a direct link between allantoin concentration and cadmium tolerance in Arabidopsis.

摘要: Allantoin, an important intermediate of ureide metabolism, has been the subject investigation recently due to its dual function in nitrogen recycling and abiotic stress response plants. Allantoin appears be dominant accumulating different stresses, mutants containing elevated allantoin concentrations exhibit a stress-tolerant phenotype limited reactive oxygen species (ROS) generation. Here we describe involvement attempt explain regulatory mechanism(s) underlying Growth wild type Col-0 seedlings presence exogenous improved root elongation Cd treatment. treatment seeds increases superoxide dismutase activity causing enhanced seed germination seedling growth following exposure. Additionally, allantoinase-overexpressed (ALNox) lines, with lower levels allantoin, exhibited more susceptibility than Arabidopsis, implying that there is positive correlation between concentration resistance Growing ABA-insensitive (abi) on allantoin-containing media comparison abi their wild-type backgrounds demonstrated potential does not require ABA at but may ABA-dependent later stages growth, suggesting crosstalk allantoin-mediated signalling pathway