TY - GEN AU - Hill,P W AU - Raven,J A AU - Sutton,M A TI - Leaf age-related differences in apoplastic NH(4)(+) concentration, pH and the NH(3) compensation point for a wild perennial SN - 0022-0957 PY - 2002///0426 KW - Ammonia KW - metabolism KW - Cytoplasm KW - chemistry KW - Extracellular Space KW - Hydrogen-Ion Concentration KW - Magnoliopsida KW - Models, Biological KW - Nitrogen KW - Photosynthesis KW - physiology KW - Plant Leaves KW - Quaternary Ammonium Compounds KW - Time Factors N1 - Publication Type: Journal Article; Research Support, Non-U.S. Gov't ER -