photomorphogenesisn.
/ˌfəʊtə(ʊ)mɔːfə(ʊ)ˈdʒɛnᵻsɪs/, U.S. /ˈˌfoʊdoʊˌmɔrfəˈdʒɛnəsəs/ Botany.
The growth and development of plant tissues and structures as influenced by light (esp. independently of photosynthesis).
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photomorphogenesis1957
1957 Amer. Jrnl. Bot. 44 18/2 At least the final steps in chlorophyll synthesis are not directly concerned with photomorphogenesis.
1959 A. W. Galston in R. B. Withrow Photoperiodism ii. 156 An understanding of the nature of the inhibitor and of the mechanism of light control of its synthesis may shed some light on the intermediary biochemistry of photomorphogenesis.
1975 Nature 10 Jan. 94/2 Profound changes in the activity of many plant enzymes occur during photomorphogenesis, the response of dark-grown plants to light.
2000 Nature 14 Dec. 810/1 The goal of this process, called photomorphogenesis, is the establishment of a body plan that allows the plant to be an efficient photosynthetic machine under varying light conditions.
This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).
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n.1957