ERD5 — Asparagus officinalis

Summary

AoERD5 (A4U43_C04F9540) on asparagus chromosome 4 encodes a proline oxidase (EC 1.5.5.2) with FAD binding and proline oxidase activity, localised to mitochondria. The gene is associated with proline breakdown, somatic embryogenesis, embryogenesis, cellular response to hypoxia, response to oxidative stress, osmotic response, cell differentiation, defence response to bacteria, and response to thirst. It has been linked to respiration rate, photosynthetic rate, proline accumulation, proline 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 connect the proline dehydrogenase family to traits including drought recovery, leaf relative water content, shoot dry weight, proline content, net photosynthetic rate, chlorophyll content, plant height, disease tolerance, and salt tolerance, as well as phenotypes such as decreased root elongation under low water potential, oxidative stress tolerance, and freezing tolerance.