FUM1 — Asparagus officinalis

Summary

A4U43_C05F1310, designated AoFUM1, encodes a fumarate hydratase (EC 4.2.1.2) belonging to the fumarate lyase family, with fumarate hydratase activity and protein phosphorylated amino acid binding. In asparagus, this gene is associated with fumarate and malate metabolism, the TCA cycle, nitrate assimilation, regulation of photosynthesis, brassinosteroid-mediated signalling, and pollen tube development. It is linked to protein tetramerization and localised to mitochondria, plastids, the cytosol, Golgi complex, and plant-type vacuole. Associations include leaf composition, seedling growth, organ identity, and nitrate uptake traits. Phenotypic connections involve fumarate accumulation, fumarase activity, photosynthetic efficiency and acclimation to high and low temperature, cold acclimation, nitrogen utilization and assimilation, biomass production, and growth under metal deficiency. Related genes in other species link the family to photosynthetic acclimation to cold, organic acid metabolism, and organ size.