Alpha 2.0
Login Register
» Articles » PMID: 16658402

Diurnal Variations in Photosynthetic Products and Nitrogen Metabolism in Expanding Leaves

Overview
Journal Plant Physiol
Specialty Physiology
Date 1973 Apr 1
PMID 16658402
Citations 11
Authors
B T Steer
Affiliations
Soon will be listed here.
Abstract

Expanding leaves of Capsicum frutescens L. cv. California Wonder, Cucumis melo L. cv. Hales Best, and Citrus sinensis L. Osbeck cv. Washington Navel showed a marked diurnal periodicity in the incorporation of (14)C from photosynthetically fixed (14)CO(2) into amino acids. Incorporation was virtually nil at the beginning of the photoperiod, reached a maximum in the 6th to 7th hour and decreased during the latter part of the photoperiod. In Capsicum frutescens this was apparently a reflection of the availability of reduced nitrogen controlled by the activity of nitrate reductase in the leaves. This also controlled the periodicity of the incorporation of (14)C into fraction I protein. Possible control mechanisms and the relation of nitrogen metabolism to the periodicity of leaf expansion growth are discussed.

Citing Articles

Wheat photosystem II heat tolerance responds dynamically to short- and long-term warming.

Posch B, Hammer J, Atkin O, Bramley H, Ruan Y, Trethowan R J Exp Bot. 2022; .

PMID: 35604885 PMC: 9127437. DOI: 10.1093/jxb/erac039.

Photosynthate translocation in Capsicum annuum.

Steer B, Pearson C Planta. 2014; 128(2):155-62.

PMID: 24430691 DOI: 10.1007/BF00390317.

Daily changes in nitrate uptake and metabolism in Capsicum annuum.

Pearson C, Steer B Planta. 2014; 137(2):107-12.

PMID: 24420626 DOI: 10.1007/BF00387546.

Intracellular Carbon Partitioning in Chlamydomonas reinhardtii.

Klein U Plant Physiol. 1987; 85(4):892-7.

PMID: 16665826 PMC: 1054364. DOI: 10.1104/pp.85.4.892.

Carbon Accumulation during Photosynthesis in Leaves of Nitrogen- and Phosphorus-Stressed Cotton.

Radin J, Eidenbock M Plant Physiol. 1986; 82(3):869-71.

PMID: 16665124 PMC: 1056222. DOI: 10.1104/pp.82.3.869.

References
1.
Beevers L, Schrader L, Flesher D, Hageman R . The Role of Light and Nitrate in the Induction of Nitrate Reductase in Radish Cotyledons and Maize Seedlings. Plant Physiol. 1965; 40(4):691-8. PMC: 550363. DOI: 10.1104/pp.40.4.691. View
2.
Carr D, Pate J . Ageing in the whole plant. Symp Soc Exp Biol. 1967; 21:559-99. View
3.
Noguchi M, Tamaki E . Studies on nitrogen metabolism in tobacco plants. A. II. Diurnal variation in the amino acid composition of tobacco leaves. Arch Biochem Biophys. 1962; 98:197-205. DOI: 10.1016/0003-9861(62)90173-x. View
4.
Kanazawa T, Kirk M, Bassham J . Regulatory effects of ammonia on carbon metabolism in photosynthesizing Chlorella pyrenoidosa. Biochim Biophys Acta. 1970; 205(3):401-8. DOI: 10.1016/0005-2728(70)90106-4. View
5.
Bassham J . The control of photosynthetic carbon metabolism. Science. 1971; 172(3983):526-34. DOI: 10.1126/science.172.3983.526. View