FHA — Solanum lycopersicum

Summary

SlFHA (SOLYC04G074180.4) on tomato chromosome 4 encodes a cryptochrome/photolyase family protein with DNA (6-4) photolyase activity, CPD photolyase activity, blue light photoreceptor activity, and histone kinase activity. The gene is associated with photoreactive repair, pyrimidine dimer repair, detection of light, flower formation, plastid gene expression, and regulation of post-embryonic development. In tomato, SlFHA has been linked to fruit antioxidant content, vegetative development, internode length, and resistance to Pseudomonas syringae. It is also associated with numerous traits including grain yield, leaf chlorophyll content, carotene content, neoxanthin content, plant dry weight, and responses to light quality, UV, and glyphosate. The protein localizes to chloroplast nucleoids, nuclear bodies, SCF complexes, and the plasma membrane. Studies of related genes in other species connect the family to UV tolerance, hypocotyl growth inhibition, de-etiolation, and phototropic responses.