A colored plastid other than a chloroplast, typically containing a yellow or orange pigment.
- In ripening fruit, chloroplasts develop into chromoplasts and there are large changes in stromule number and morphology, particularly in the inner mesocarp cells.
- Although control of gene expression at the transcriptional level is a key regulatory mechanism controlling carotenogenesis in chromoplasts, it is not the only one.
- Conversion of chloroplasts to chromoplasts occurs well before flower opening and thus before the reproductive function of the flower commences.
Late 19th century: from chromo-2 'color' + Greek plastos 'formed'.
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