aerotropic
English edit
Etymology edit
aero- + -tropic, see also aerotropism.
Pronunciation edit
- Rhymes: -ɒpɪk
Adjective edit
aerotropic (not comparable)
- (biology) growing towards higher concentrations of oxygen
- 1950, Walter Stiles, An Introduction to the Principles of Plant Physiology:
- According to him, roots are positively aerotropic, a root executing a curvature tending to bring the apex in the direction of the highest oxygen concentration, while pollen tubes growing in water are in this sense negatively aerotropic.
- 1894, American Microscopical Society, Proceedings of the American Microscopical Society:
- The branches of the main root tend to be aerotropic, whether they are in shallow water or mud or deeply submerged.
- 1921, Frederic Edward Clements, Aeration and Air-content: The Rôle of Oxygen in Root Activity:
- The horizontal growth of the roots upon the water is an aerotropic movement determined by the high oxygen-content of the uppermost water-layer.
- 1972, Excerpta botanica: Taxonomica et chorologica. Sectio A:
- The lower portion of this aerotropic root-branch bears numerous laterals which grow downward, in a positively geotropic direction.
Translations edit
growing towards higher oxygen levels