PSAD — Cucumis sativus

Summary

CSA_3G147780, designated PSAD in cucumber (Cucumis sativus, chromosome 3), encodes a protein of the PsaD_sf family. The product is annotated with oxidoreductase activity acting on iron-sulfur proteins as donors, chlorophyll binding, and protein domain-specific binding. PSAD is localized to the photosystem I reaction center, chloroplast thylakoid membrane, and thylakoid. It is associated with photosynthetic electron transport in photosystem I, light harvesting in photosystem I, photoprotection, response to high and low light intensity, chlorophyll metabolism, protein repair, leaf development, and acquisition of seed longevity. The gene is linked to net photosynthetic rate, photosynthetic rate, seed dormancy, plant growth and development, root morphology, and organ identity. Phenotypic associations include dwarfism, pale green leaves, reduced seed longevity, altered thylakoid membrane architecture, reduced chloroplast grana stacks, and impaired photosynthesis. Related genes in other species link the family to seed longevity, chlorophyll content, quantum yield, and photoinhibition resistance.