autotropismn.

Brit.

/ˌɔːtə(ʊ)ˈtrəʊpɪz(ə)m/, U.S.

/ˌɔdoʊˈtrɑˌpɪz(ə)m/,

/ˌɔdəˈtrɑˌpɪz(ə)m/,

/ˌɑdoʊˈtrɑˌpɪz(ə)m/,

/ˌɑdəˈtrɑˌpɪz(ə)m/

Origin: Formed within English, by compounding. Etymons: auto- comb. form¹, -tropism comb. form.

Etymology: < auto- comb. form¹ + -tropism comb. form. In sense 1 after German Autotropismus ( W. Pfeffer 1893, in Verhandl. der Ges. Deutsch. Naturforscher u. Ärzte i. 84).

1. Botany. The tendency of a plant part, esp. a root or shoot, to grow in a straight line or to retain its normal spatial orientation even in the presence of altered tropic stimuli (such as light or gravity).

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

1897 Bot. Gaz. 23 318 The roots react to..traumatropic stimuli, besides exhibiting rectipetality or autotropism.

1906 A. J. Ewart tr. W. Pfeffer Physiol. Plants III. 249 The lateral shoots assume either a plagiotropic position in virtue of their autotropism or are led into particular positions by various aitiogenic influences.

1937 F. W. Went & K. V. Thimann Phytohormones iv. 178 After only 30 minutes of curving the curvature begins to decrease very rapidly in the uppermost zones, so that they are straight within 2 hours (‘autotropism’).

2006 G. Perbal in G. Clément & K. Slenzka Fund. Space Biol. vi. 278 After a slight stimulation on a centrifuge, the roots show autotropism, i.e., straightening after several hours.

2. Mycology. The tendency of a fungal hypha to grow towards or away from another hypha in the same mycelium, or of the germ-tube of a germinating spore to grow towards or away from a spore of the same species.Autotropism in this sense is frequently described as positive (oriented towards the other hypha or spore), or negative (oriented away from the other hypha or spore).

ΚΠ

1966 Plant Physiol. 41 303 (heading) On Autotropism in Botrytis.

1973 Bot. Rev. 39 373 Strands of three to four hyphae growing parallel to one another were observed quite frequently. This effect could be interpreted as positive autotropism.

2002 D. Moore & L. N. Frazer Essent. Fungal Genetics ii. i 33 During normal mycelial growth vegetative hyphae usually avoid each other (known as negative autotropism). This behavior pattern promotes exploration.

This entry has been updated (OED Third Edition, June 2011; most recently modified version published online December 2021).

单词	autotropism
释义	autotropismn. Brit. /ˌɔːtə(ʊ)ˈtrəʊpɪz(ə)m/, U.S. /ˌɔdoʊˈtrɑˌpɪz(ə)m/, /ˌɔdəˈtrɑˌpɪz(ə)m/, /ˌɑdoʊˈtrɑˌpɪz(ə)m/, /ˌɑdəˈtrɑˌpɪz(ə)m/ Origin: Formed within English, by compounding. Etymons: auto- comb. form¹, -tropism comb. form. Etymology: < auto- comb. form¹ + -tropism comb. form. In sense 1 after German Autotropismus ( W. Pfeffer 1893, in Verhandl. der Ges. Deutsch. Naturforscher u. Ärzte i. 84). 1. Botany. The tendency of a plant part, esp. a root or shoot, to grow in a straight line or to retain its normal spatial orientation even in the presence of altered tropic stimuli (such as light or gravity). 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 1897 Bot. Gaz. 23 318 The roots react to..traumatropic stimuli, besides exhibiting rectipetality or autotropism. 1906 A. J. Ewart tr. W. Pfeffer Physiol. Plants III. 249 The lateral shoots assume either a plagiotropic position in virtue of their autotropism or are led into particular positions by various aitiogenic influences. 1937 F. W. Went & K. V. Thimann Phytohormones iv. 178 After only 30 minutes of curving the curvature begins to decrease very rapidly in the uppermost zones, so that they are straight within 2 hours (‘autotropism’). 2006 G. Perbal in G. Clément & K. Slenzka Fund. Space Biol. vi. 278 After a slight stimulation on a centrifuge, the roots show autotropism, i.e., straightening after several hours. 2. Mycology. The tendency of a fungal hypha to grow towards or away from another hypha in the same mycelium, or of the germ-tube of a germinating spore to grow towards or away from a spore of the same species.Autotropism in this sense is frequently described as positive (oriented towards the other hypha or spore), or negative (oriented away from the other hypha or spore). ΚΠ 1966 Plant Physiol. 41 303 (heading) On Autotropism in Botrytis. 1973 Bot. Rev. 39 373 Strands of three to four hyphae growing parallel to one another were observed quite frequently. This effect could be interpreted as positive autotropism. 2002 D. Moore & L. N. Frazer Essent. Fungal Genetics ii. i 33 During normal mycelial growth vegetative hyphae usually avoid each other (known as negative autotropism). This behavior pattern promotes exploration. This entry has been updated (OED Third Edition, June 2011; most recently modified version published online December 2021). < n.1897
随便看	sarcopside sarcopt sarcopterygian sarcopterygians sarcoptes sarcoptic sarcoptic mange sarcoptid sarcoptides sarcoptids sarcosine sarcosines sarcosinic sarcosoma sarcosomal sarcosome sarcosomes sarcosperm sarcosporidial sarcosporidian sarcosporidians sarcosporidiosis sarcosporidium sarcostosis sarcostyle