APX — Daucus carota subsp. sativus

Summary

DCAR_018843 (DcAPX) on carrot chromosome 5 encodes a haem peroxidase with L-ascorbate peroxidase activity, also annotated with p-coumarate 3-hydroxylase, siRNA binding, chitosan binding, RNA endonuclease, miRNA binding, chitin binding, histone H2AS1 kinase, transmembrane receptor protein kinase, heme binding, kinase, protein kinase, protein serine/threonine kinase, and metal binding activities. The gene is associated with cellular response to oxidative stress, hydrogen peroxide catabolism, auxin metabolism, lignin anabolism, cell cycle G2/M phase transition, positive regulation of stomatal complex development, leaf patterning, adventitious root development, and gene silencing by miRNA. It localises to peroxisome membrane, chloroplast thylakoid membrane, stress granule, plant-type cell wall, Golgi, plasmodesma, mitochondria, and extracellular regions. DcAPX is linked to bacterial blight disease resistance, viral disease response, aphid response, biomass yield, seed viability, days to flowering, photosynthetic rate, leaf senescence, root length, and ethylene sensitivity. Related genes in other species are associated with drought, heat, salt, oxidative stress tolerance, and pathogen defense.