Diurnal variation in uptake and xylem contents of inorganic and assimilated N under continuous and interrupted N supply to Phleum pratense and Festuca pratensis

• Published in: Journal of experimental botany Vol. 54; no. 381; pp. 431 - 444
• Main Authors: Macduff, J. H., Bakken, A. K.
• Format: Journal Article
• Language: English
• Published: Oxford Oxford University Press 01.01.2003; OXFORD UNIVERSITY PRESS; Oxford Publishing Limited (England)
• Subjects: Absorption. Translocation of ions and substances. Permeability; Agronomy. Soil science and plant productions; Amino acids; ammonium; Ammonium nitrate; Biological and medical sciences; Circadian Rhythm; cytoplasm; diurnal variation; Diurnal variations; Dry matter; Economic plant physiology; efflux; Festuca; Festuca - metabolism; Festuca pratensis; Fundamental and applied biological sciences. Psychology; Gramineae; Grasses; influx; ion uptake; Key words: Amino acids; Light; metabolism; nitrate; Nitrates; Nitrates - metabolism; nitrogen; Nitrogen - metabolism; nitrogen content; nutrient availability; Nutrient solutions; nutrient transport; nutrient uptake; Nutrition. Photosynthesis. Respiration. Metabolism; Phleum; Phleum - metabolism; Phleum pratense; Photophase; Plant growth; Plant physiology and development; Plant roots; Plants; potassium; Quaternary Ammonium Compounds; Quaternary Ammonium Compounds - metabolism; Research Papers: Plants and the Environment; Roots; Scotophase; Transpiration; Water and solutes. Absorption, translocation and permeability; Xylem; xylem composition; Monocotyledones; Ammonium; Xylem; potassium; Phleum pratense; Available nutrient; Amino acids; Nitrates; nitrate; Inorganic element; Festuca pratensis; Regulation(control); Absorption; Gramineae; Angiospermae; Chemical composition; xylem composition; ion uptake; Nutrition; Root; influx; Diurnal variation; Nitrogen; Metabolism; efflux; Aminoacid; Nutrient; Spermatophyta; Application method; Fodder crop; Cytoplasm

Compensation by dark‐period uptake of NH4+ and NO3– in the grasses Phleum pratense L. and Festuca pratensis Huds. following N deprivation during the preceding light period was investigated in flowing solution culture under an artificial 10/14 h light/dark cycle. N was supplied as either NO3–, NH4+ o...