phototrophyn.

Brit.

/ˈfəʊtəʊˌtrəʊfi/, U.S.

/ˈfoʊdoʊˌtroʊfi/

Origin: Formed within English, by compounding. Etymons: photo- comb. form, -trophy comb. form.

Etymology: < photo- comb. form + -trophy comb. form. Compare phototrophic adj.In sense 1 after German Phototrophie (J. Wiesner 1895, in Sitzungser. der kaiserl. Akad. der Wissensch. 104 687 (note)). Although the sense might suggest a confusion with slightly earlier phototropy n. 1, reference to differential nutrition as a cause of differential growth seems to have been intended.

Biology.

†1. Unequal growth of plant organs attributed to an unequal supply of nutrients resulting from the influence of light. Cf. phototropy n. 1. Obsolete. rare.

ΚΠ

1896 Jrnl. Royal Microsc. Soc. 326 In relation to the cause of the unequal supply of nutriment which results in unequal growth, we may have phototrophy, geotrophy, or hydrotrophy.

2. Microbial nutrition utilizing light as the chief source of energy.

ΘΚΠ

the world > plants > by nutrition or respiration > [noun] > photosynthesis

photosyntax1893

photosynthesis1893

phototrophy1947

photosystem1964

1947 Cold Spring Harbor Symp. Quant. Biol. 11 302 The following terminology is hereby proposed to characterize nutritional types [of microorganism]... A. Phototrophy. Energy chiefly provided by photochemical reaction. 1. Photolithotrophy... 2. Photoorganotrophy... B. Chemotrophy. Energy provided entirely by dark chemical reaction.

1955 Amer. Naturalist 89 161 Mutations from auxotrophy to phototrophy may or may not require the complete synthesis of growth factor-synthesizing enzymes.

1998 M. A. S. McMenamin Garden of Ediacara v. 136 Supplemental nutrition by phototrophy via microbial symbionts is also likely if these organisms were translucent and resided in the photic zone.

This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).

单词	phototrophy
释义	phototrophyn. Brit. /ˈfəʊtəʊˌtrəʊfi/, U.S. /ˈfoʊdoʊˌtroʊfi/ Origin: Formed within English, by compounding. Etymons: photo- comb. form, -trophy comb. form. Etymology: < photo- comb. form + -trophy comb. form. Compare phototrophic adj.In sense 1 after German Phototrophie (J. Wiesner 1895, in Sitzungser. der kaiserl. Akad. der Wissensch. 104 687 (note)). Although the sense might suggest a confusion with slightly earlier phototropy n. 1, reference to differential nutrition as a cause of differential growth seems to have been intended. Biology. †1. Unequal growth of plant organs attributed to an unequal supply of nutrients resulting from the influence of light. Cf. phototropy n. 1. Obsolete. rare. ΚΠ 1896 Jrnl. Royal Microsc. Soc. 326 In relation to the cause of the unequal supply of nutriment which results in unequal growth, we may have phototrophy, geotrophy, or hydrotrophy. 2. Microbial nutrition utilizing light as the chief source of energy. ΘΚΠ the world > plants > by nutrition or respiration > [noun] > photosynthesis photosyntax1893 photosynthesis1893 phototrophy1947 photosystem1964 1947 Cold Spring Harbor Symp. Quant. Biol. 11 302 The following terminology is hereby proposed to characterize nutritional types [of microorganism]... A. Phototrophy. Energy chiefly provided by photochemical reaction. 1. Photolithotrophy... 2. Photoorganotrophy... B. Chemotrophy. Energy provided entirely by dark chemical reaction. 1955 Amer. Naturalist 89 161 Mutations from auxotrophy to phototrophy may or may not require the complete synthesis of growth factor-synthesizing enzymes. 1998 M. A. S. McMenamin Garden of Ediacara v. 136 Supplemental nutrition by phototrophy via microbial symbionts is also likely if these organisms were translucent and resided in the photic zone. This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022). < n.1896
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