ERD5 — Brassica napus

Summary

BnERD5 (ERD5, PRO1, PDH1) on chromosome C09 of oilseed rape (Brassica napus) encodes a proline oxidase with a FAD-linked oxidoreductase-like domain, placing it in the proline dehydrogenase family. The enzyme is localised to mitochondria and is associated with proline breakdown, spore germination, response to boron, heme anabolism, metabolic burst, response to AOS, cellular response to hypoxia, oxidative stress, defence response to bacteria, and response to thirst. The gene has been connected to root and shoot fresh weight, net photosynthetic rate, proline content, and salt tolerance (SALTTL). Phenotypic associations include proline accumulation and metabolism, growth under water deficit, hypersensitive response, NADP/NADPH ratio, root elongation at low water potential, dehydration response, drought tolerance, and abiotic stress response. Studies of related genes in other species link the family to leaf water potential, amino acid content, heterosis, osmotic and oxidative stress responses, disease tolerance, freezing tolerance, and salt tolerance.