The present invention discloses gene targets and methods for the genetic control of lipid accumulation in vegetative (non-seed) portions of plants. Enhanced lipid, e.g. triacylglycerol (TAG), accumulation in vegetative portions of plants may be obtained by down-regulation of activity of At4g24160 or a homolog thereof. Plants, plant parts, seeds comprising down-regulated AT4G24160 activity, or activity of a homolog thereof, are also provided, as well as products prepared therefrom.