haptotropismn.
/ˌhaptə(ʊ)ˈtrəʊpɪz(ə)m/, /ˌhaptə(ʊ)ˈtrɒpɪz(ə)m/, U.S. /ˌhæptəˈtroʊpɪzəm/, /ˌhæptəˈtrɑpɪzəm/ Botany.
The movement or directional growth of plants or plant organs (as the tendrils of climbing plants) in response to the stimulus of touch. Also called thigmotropism.
ΘΚΠ
the world > plants > part of plant > growth, movement, or curvature of parts > [noun] > tropisms
heliotropism1854
geotropism1873
apheliotropism1880
apogeotropism1880
nyctitropism1880
paraheliotropism1881
hydrotropism1882
selenotropism1883
selenotropy1883
rheotropism1884
orthotropism1885
plagiotropism1886
geotropy1888
haptotropism1888
aerotropism1889
phototropy1892
autotropism1897
plagiotropy1898
thermotropism1898
traumatropism1898
phototropism1899
gravitropism1969
1888 Jrnl. Royal Microsc. Soc. 260 The special object of the present inquiry is to determine..the causes of the sensitiveness to contact, the set of movements termed by Errera haptotropism.
1906 New Phytologist 5 226 The haptotropism of a tendril, however, resembles the ordinary tropisms in as much as the stimulus determines the plane of curvature.
1965 P. Bell & D. Coombe tr. Strasburger's Textbk. Bot. (new ed.) 375 Many plants..are sensitive to touch... This phenomenon is termed haptotropism (thigmotropism).
2000 Internat. Jrnl. Plant Sci. 161 759/2 An additional feature..is the irritability of stamens in response to touch (haptotropism).
Derivatives
haptoˈtropic adj.
ΘΚΠ
the world > plants > part of plant > growth, movement, or curvature of parts > [adjective] > undergoing tropism
geotropic1875
heliotropic1875
paratonic1875
apheliotropic1880
apogeotropic1880
nyctitropic1880
paraheliotropic1880
plagiotropic1882
phototropic1883
selenotropic1883
rheotropic1884
orthotropic1885
thermotropic1885
haptotropic1888
traumatropic1898
plagiotropous1900
aphototropic1903
orthotropous1909
1888 Jrnl. Royal Microsc. Soc. 260 These haptotropic curvatures of Phycomyces are always accompanied by a peculiar change in the distribution of the protoplasm.
1916 Bull. Torrey Bot. Club 43 23 The rate of conduction would be 0.2mm. per second, which is faster than any instance given for the haptotropic reaction of tendrils.
1995 G. Lawlor & D. W. Lawlor tr. H. Mohr & P. Schopfer Plant Physiol. 525/2 As soon as the axis touches or rubs against a mechanical resistance a haptotropic growth movement occurs.
This entry has been updated (OED Third Edition, December 2013; most recently modified version published online March 2022).
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n.1888