LDH — Cucumis sativus

Summary

CsLDH (CSA_5G161940) encodes an L-lactate dehydrogenase with NAD+ activity, belonging to the L-lactate/malate dehydrogenase family. In cucumber, this gene is associated with diverse biological processes including anaerobic respiration, ethanol fermentation, pyruvate breakdown, lactate metabolism, the TCA cycle, and response to abscisic acid. It has been linked to seed germination, embryogenesis, cell death, and nitrogen fixation. The encoded protein localizes to the cytosol and plasmalemma. Trait associations include root fresh weight, root length, lateral root number, respiration rate, and oxygen deficit response. Studies of related genes in other species connect the LDH family to hypoxia tolerance, fruit size, chlorophyll content, plant height, and sugar content, though these relationships are not yet established in cucumber.