GDH — Lactuca sativa
Summary
LsDHE4 (GDH) on lettuce chromosome 4 encodes a glutamate dehydrogenase with both NAD⁺ and NADP⁺ activities, placing it in the Glu/Leu/Phe/Val/Trp dehydrogenase family. The gene is associated with glutamate breakdown, amino acid metabolic processes, and responses to nitrogen compounds, nitrogen starvation, basic pH, cold, and salinity. Its product localises to mitochondria and cytosol. Lettuce-specific associations link LsDHE4 to respiration rate and photosynthetic rate. Studies of related genes in other species connect the family to a wide range of agronomic traits, including root and leaf nitrogen content, nitrate content, plant and shoot dry weight, fruit weight, plant height, chlorophyll and carotenoid content, net photosynthetic rate, water use efficiency, starch and protein content, proline content, and cadmium concentration.
Annotations
- Chromosome
- 4
- Related genes
- GDH, DHE4, F19C24.7
- GO terms
- salinity response, L-glutamate Dehydrogenase (NADP+) Activity, glutamate breakdown, GO:0006537, Cellular Response To Nitrogen Starvation, L-glutamate Dehydrogenase (NAD+) Activity, response to basic pH, Amino Acid Metabolic Process
- Publications
- PMID:17126728, PMID:10791819, PMID:25761119, PMID:16292661, PMID:19689774, PMID:39573986, PMID:11181711, PMID:18089549
- Traits
- RP GH, net photosynthetic rate, photochemical quenching, Chl a (exact), leaf nitrogen content, shoot dry weight, root nitrogen content, root dry weight