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Any of several cytoplasmic organelles, such as chloroplasts, that contain genetic material, have a double membrane, and are often pigmented. Plastids are found in plants, algae, and certain other eukaryotic organisms and have various physiological functions, such as the synthesis and storage of food.

[From Greek plastis, plastid-, feminine of plastēs, molder, from plastos, molded; see plastic.]

plas·tid′i·al (plăs-tĭd′ē-əl) adj.


relating to a plastid
References in periodicals archive ?
Such plant based systems can represent ideal for the expression of protein in transient systems driven by well contained infectious vectors, or in stable transgenic systems based on nuclear or plastidial transformation (Buonaguro et al.
The two pathways of terpenoid synthesis in plants are not fully independent, as evidence of cross-talk between IPP in the cytosolic and plastidial pathways have been found (Hemmerlin et al.