Phenomena and Processes

Gravitropism

The directional growth of organisms in response to gravity. In plants, the main root is positively gravitropic (growing downwards) and a main stem is negatively gravitropic (growing upwards), irrespective of the positions in which they are placed. Plant gravitropism is thought to be controlled by auxin (AUXINS), a plant growth substance. (From Concise Dictionary of Biology, 1990)

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

The directional growth of organisms in response to gravity. In plants, the main root is positively gravitropic (growing downwards) and a main stem is negatively gravitropic (growing upwards), irrespective of the positions in which they are placed. Plant gravitropism is thought to be controlled by auxin (AUXINS), a plant growth substance. (From Concise Dictionary of Biology, 1990)

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See Also

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Synonyms

3 entry terms
  • Gravitropisms
  • Geotropism
  • Geotropisms

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Aspects Covered

6 allowable subheadings

Indexed with the subheadings drug effects, ethics, genetics, immunology, physiology, radiation effects.

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Indexing Annotation

directional growth of a plant in response to gravity

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History Note

95

MeSH Hierarchy

Tree Numbers

  1. G07.345.249.845w.400w
  2. G15.920w.400w

AMA Style

References

  1. National Library of Medicine. Gravitropism. Medical Subject Headings (MeSH). 2026. Unique ID D018522. http://id.nlm.nih.gov/mesh/2026/D018522
  2. Gravitropism. In: Wikipedia. https://en.wikipedia.org/wiki/Gravitropism
  3. Gravitropism. In: Wikidata. https://www.wikidata.org/wiki/Q276985