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Starch grains in potato cells

Starch grains in potato cells

B100/0039

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Credit

DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY

Caption

False-colour scanning electron micrograph of a slice through a raw potato, Solanum tuberosum, showing starch grains, or amyloplasts (red), within their cellular compartments. Due to the angle of sectioning some cells show no starch grains. Starch is synthesised from sucrose, a sugar formed in the leaves during photosynthesis & transported to the tuber (potato) via the phloem (vascular tissue). It is used as a store of energy for the later development of buds on the surface of the potato. Starch grains are large (the biggest here being 50 microns across), larger than most plant cells. Magnification: X80 at 6x4.

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