tuber

(noun)

a fleshy, thickened, underground stem of a plant, usually containing stored starch, as for example a potato or arrowroot

Related Terms

Examples of tuber in the following topics:

  • Stem Modifications

    • Tubers are modified stems that may store starch, as seen in the potato.
    • Tubers arise as swollen ends of stolons, and contain many adventitious or unusual buds (familiar to us as the "eyes" on potatoes).
    • Shown are (a) ginger (Zingiber officinale) rhizomes, (b) a carrion flower (Amorphophallus titanum) corm (c) Rhodes grass (Chloris gayana) stolons, (d) strawberry (Fragaria ananassa) runners, (e) potato (Solanum tuberosum) tubers, and (f) red onion (Allium) bulbs.

  • Asexual Reproduction in Plants

    • A potato is a stem tuber, while parsnip propagates from a taproot.
    • (d) Potato plants form fleshy stem tubers.
    • Each eye in the stem tuber can give rise to a new plant.

  • Viroids

    • The first viroid to be identified was the potato spindle tuber viroid (PSTVd) .
    • Finally, transgenic expression of the noninfectious hpRNA of potato spindle tuber viroid develops all the corresponding viroid like symptoms.

  • Anatomy of the Pancreas

    • 1: Head of pancreas 2: Uncinate process of pancreas 3: Pancreatic notch 4: Body of pancreas 5: Anterior surface of pancreas 6: Inferior surface of pancreas 7: Superior margin of pancreas 8: Anterior margin of pancreas 9: Inferior margin of pancreas 10: Omental tuber 11: Tail of pancreas 12: Duodenum.

  • Root Modifications

    • Storage roots (for example, taproots and tuberous roots) are modified for food storage.

  • Transportation of Photosynthates in the Phloem

    • Seeds, tubers, and bulbs can be either a source or a sink, depending on the plant's stage of development and the season.
    • They are also directed to tubers for storage.

  • Prions and Viroids

    • These potatoes have been infected by the potato spindle tuber viroid (PSTV).

  • Dietary Fiber

    • Soluble fiber is found in varying quantities in all plant foods including legumes (peas, soybeans, lupins, and other beans), oats, rye, chia, and barley, some fruits and fruit juices (including prune juice, plums, berries, bananas, and the insides of apples and pears), certain vegetables such as broccoli, carrots, and Jerusalem artichokes, root tubers and root vegetables such as sweet potatoes and onions (skins of these are also sources of insoluble fiber), psyllium seed husk (a mucilage soluble fiber) and flax seeds, and nuts (almonds are the highest in dietary fiber).

  • Polysaccharides

    • Starch is a polymer of glucose, found in roots, rhizomes, seeds, stems, tubers and corms of plants, as microscopic granules having characteristic shapes and sizes.

  • Third Declension