The participation of cis-4-cyclohexene-1,2-dicarboximide in the inhibition of light-controlled growth responses

• Published in: Plant science (Limerick) Vol. 67; no. 2; pp. 141 - 149
• Main Authors: Stewart, Ann M., Bewley, J.Derek
• Format: Journal Article
• Language: English
• Published: Shannon Elsevier Ireland Ltd 1990; Elsevier Science
• Subjects: Biological and medical sciences; cell elongation; Fundamental and applied biological sciences. Psychology; inhibitors; light; Physical agents; phytochrome; phytohormones; Plant physiology and development; Vegetative apparatus, growth and morphogenesis. Senescence; cell elongation; inhibitors; phytochrome; light; phytohormones; Monocotyledones; Growth; Red light; Compositae; Raphanus sativus; Spores; Stem; Regulation(control); Cruciferae; Gramineae; Dicotyledones; Angiospermae; Plant growth substance; Lactuca sativa; Elongation; Filicineae; Light effect; Hordeum vulgare; Germination; Plant leaf; Metabolic inhibitor; Pteridophyta; Anemia phyllitidis; Leguminosae; Phaseolus vulgaris; Phytochrome; Spermatophyta
• ISSN: 0168-9452; 1873-2259
• DOI: 10.1016/0168-9452(90)90237-I

cis-4-Cyclohexene-1,2-dicarboximide (CHDC) and several structural analogues inhibit the germination of light-sensitive seeds but not that of non-photoblastic seeds. Other cell elongation processes mediated by red light, viz. fern spore germination, primary leaf unrolling in barley and enlargement of bean leaf discs are also inhibited by CHDC, in a manner which is reversible by benzyladenine (BA) or Ca 2+ ions. Light-inhibited elongation is not reversed by CHDC. The inhibition of growth is not convened to light-mediated systems, however, for growth of lettuce hypocotyls in darkness, and in light on gibberellin, is prevented by CHDC, as is radish hypocotyl growth. Auxin-induced growth of pea stem segments is not inhibited, on the other hand. Other events not related to cell elongation, such as β-amylase and anthocyanin production in mustard cotyledons, are inhibited by CHDC. Thus CHDC, while inhibitory to light-controlled cell elongation will also inhibit other light-mediated processes.