Which plastid stores lipids?
Plastid diversity reflects differentiation of proplastids in meristems according to tissue identity and developmental signals regulated by light, hormones and transcription factors. Elaioplasts are specialized non-photosynthetic leucoplasts lacking chlorophyll that function in lipid storage and metabolism crucial for reproduction. They are abundant in oil seeds like Brassica, citrus exocarp oil glands, and anther tapetum where lipid reserves for pollen coat tryphine formation and pollinator attraction are needed. Ultrastructurally they contain numerous electron-dense plastoglobuli and oil drop
Ref: Wise & Hoober, The Structure and Function of Plastids, Chapter 9: Classification of Leucoplasts and Elaioplasts.