Proline metabolism and transport in maize seedlings at low water potential.

@article{Raymond2002ProlineMA,
  title={Proline metabolism and transport in maize seedlings at low water potential.},
  author={Marjorie J Raymond and Nicholas Smirnoff},
  journal={Annals of botany},
  year={2002},
  volume={89 Spec No},
  pages={813-23}
}
The growing zone of maize seedling primary roots accumulates proline at low water potential. Endosperm removal and excision of root tips rapidly decreased the proline pool and greatly reduced proline accumulation in root tips at low water potential. Proline accumulation was not restored by exogenous amino acids. Labelling root lips with [14C]glutamate and [14C]proline showed that the rate of proline utilization (oxidation and protein synthesis) exceeded the rate of biosynthesis by five-fold at… CONTINUE READING