The present invention relates generally to the field of molecular biology and concerns a method for enhancing various economically important yield-related traits in plants. More specifically, the present invention concerns a method for enhancing yield-related traits in plants by modulating expression in a plant of a nucleic acid encoding an O-FUT polypeptide, or a By-Pass (BPS) polypeptide, or a SIZ1 polypeptide, or a bZIP-S polypeptide, or a SPA15-like polypeptide. The present invention also concerns plants having modulated expression of a nucleic acid encoding an O-FUT polypeptide, or a By-Pass (BPS) polypeptide, or a SIZ1 polypeptide, or a bZIP-S polypeptide, or a SPA15-like polypeptide, which plants have enhanced yield-related traits relative to control plants. The invention also provides hitherto unknown an O-FUT, or By-Pass (BPS) polypeptide, or SIZ1, or bZIP-S, or SPA15-like-encoding nucleic acids, and constructs comprising the same, useful in performing the methods of the invention.
