Chlorophyll production and chloroplast development in norflurazon‐treated plants
- 1 April 1976
- journal article
- Published by Wiley in Weed Research
- Vol. 16 (2) , 125-129
- https://doi.org/10.1111/j.1365-3180.1976.tb00390.x
Abstract
Summary: The chlorophyll production of wheat (Triticum vulgare L. cv. Mericopa), corn (Zea mays L. cv. Everta), and alfalfa (Medicago sativa L. cv. Saranac), treated with the herbicide 4‐chloro‐5‐methylamino‐2‐(3‐trifluoro‐methylphenyl)pyridazin‐ 3‐one (norflurazon) and grown under high light intensity (10 760 lux) was markedly reduced. Corn and wheat seedlings germinated and grown for 7 days in an agar medium containing 1 mg/1 norflurazon were almost completely bleached. Alfalfa was even more sensitive to norflurazon, 0.1 mg/1 causing almost complete chlorosis. Under low light intensity (10.76 lux) the influence of norflurazon on chlorophyll production was greatly reduced. It is thought that norflurazon inhibits carotenoid synthesis leaving the chlorophyll of the plant subject to photooxidation. Electron micrographs of chloroplasts from green, partially bleached, and bleached areas of corn leaves treated with norflurazon indicate that the herbicide causes progressive deterioration of the lamellar system.Keywords
This publication has 10 references indexed in Scilit:
- The uptake and translocation of 14C-SAN-6706 and 14C-SAN-9789 in Vaccinium macrocarpon cv. Early BlackWeed Research, 1974
- Metabolism of14C-SAN-6706 and14C-Norflurazon in Cranberry PlantsWeed Science, 1974
- A new inhibitor of carotenoid synthesis in higher plants: 4-Chloro-5-(dimethylamino)-2-α,α,α, (trifluoro-m-tolyl)-3(2H)-pyridazinone (Sandoz 6706)Biochemical and Biophysical Research Communications, 1972
- Interactions of Lipoidal Materials and a Pyridazinone Inhibitor of Chloroplast DevelopmentPlant Physiology, 1971
- Chloroplast Development in 4-Chloro-5-(dimethylamino)-2-(α,α,α-trifluoro-m-tolyl)-3 (2H)-pyridazinone (Sandoz 6706)-treated Wheat SeedlingsPlant Physiology, 1970
- Carotenoid synthesis in mustard seedlings as controlled by phytochrome and inhibitorsPlanta, 1970
- Modes of Action of Pyridazinone HerbicidesWeed Science, 1969
- EARLY STAGES IN THE DEVELOPMENT OF PLASTID FINE STRUCTURE IN RED AND FAR-RED LIGHTThe Journal of cell biology, 1964
- THE PHYSIOLOGY OF CHLOROPHYLL FORMATION IN RELATION TO STRUCTURAL CHANGES IN CHLOROPLASTSPhotochemistry and Photobiology, 1963
- Photosynthesis by isolated chloroplasts IV. General concept and comparison of three photochemical reactionsBiochimica et Biophysica Acta, 1956