NH4 + toxicity in higher plants: A critical review

Journal of Plant Physiology

Volumn 159, Issue 6, 2002, Pages 567-584

  Britto, Dev T ^a   Kronzucker, Herbert J ^a  

^a UNIVERSITY OF TORONTO   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

AMMONIA; BIOCHEMISTRY; CELLS; ECOLOGY; PH EFFECTS; TOXICITY;

BIOSPHERE;

PLANTS (BOTANY);

EMBRYOPHYTA;

EID: 0036299311     PISSN: 01761617     EISSN: None     Source Type: Journal    
DOI: 10.1078/0176-1617-0774     Document Type: Article

References (316)

1. Onion response to ammoniated peat and ammonium sulfate in relation to ammonium toxicity
2. Effect of time of application and nitrate: Ammonium ratio on maize grain yield, grain nitrogen concentration and soil mineral nitrogen concentration in a semi-arid region
3. Intracellular pH regulation in Ricinus communis grown with ammonium or nitrate as N source: The role of long-distance transport
4. Ammonium nutrition in Ricinus communis: Its effect on plant growth and the chemical composition of the whole plant, xylem and phloem saps
5. Functions of the vacuole in higher plant cells
6. + as inorganic nitrogen source
7. Nitrogen acquisition in four coexisting species from an upland acidic grassland
8. 2 fixation and nitrite reduction
9. Laboratory experiment to assess plant responses to environmental stresses
10. Ammonium accumulation and ethylene evolution by tomato infected with root-knot nematode and grown under different regimes of plant nutrition
11. Foliar ammonium accumulation as an index of stress in plants
12. Interrelations of ammonium toxicity and ethylene action in tomato
13. Induction of tomato stem and leaf lesions and potassium deficiency by excessive ammonium nutrition
14. Ammonium and salt inhibition of some physiological processes associated with seed germination
15. Gas and ion exchanges in wheat roots after nitrogen supply
16. 2 concentration: The roles of root physiology and architecture
17. Effect of mixed N nutrition on nutrient accumulation, partitioning, and productivity of corn
18. Difference in zeaxanthin formation in nitrate- and ammonium-grown Phaseolus vulgaris
19. The AM and FM of calcium signalling
20. A dynamic whole-plant model of integrated metabolism of nitrogen and carbon. 1. Comparative ecological implications of ammonium-nitrate interactions
21. Inhibition of photosynthesis in barley with decreased levels of chloroplastic glutamine synthetase activity
22. 2 fixation in barley deficient in glutamine synthetase and/or glutamate synthase
23. Capacity of cytochrome and alternative path in coupled and uncoupled root respiration of Pisum and Plantago
24. Ammonium and nitrate nutrition in Plantago lanceolata and Plantago major L. ssp. major. I. Aspects of growth, chemical composition and root respiration
25. Ammonium and nitrate nutrition in Plantago lanceolata L. and Plantago major L. ssp. major. III. Nitrogen metabolism
26. Nitrification and denitrification in a white spruce forest in southwest Alberta, Canada
27. 31P-NMR spectroscopy and chlorophyll fluorescence
28. Sodium transport and salt tolerance in plants
29. Impacts of tropospheric ozone and airborne nitrogenous pollutants on natural and semi-natural ecosystems: A commentary
30. The effects of air-borne nitrogen pollutants on species diversity in natural and semi-natural European vegetation
31. Root system architecture and receptivity to mycorrhizal infection infection in seedlings of Cedrus atlantica as affected by nitrogen source and concentration
32. Effects of ammonium and aluminum on the development and nutrition of Pinus nigra in hydroculture
33. A comparison between ammonium and nitrate nutrition of young sugar beet plants grown in nutrient solutions at constant acidity. 2. Effect of light and carbohydrate supply
34. 3. An evaluation of recent proposals
35. + cycling: A cellular hypothesis to explain ammonium toxicity in plants
36. Pathogenesis of acute hepatic encephalopathy
37. 2-scavenging enzymes and leaf chlorosis are enhanced in magnesium- and potassium-deficient leaves, but not in phosphorus-deficient leaves
38. Magnesium deficiency and high light intensity enhance activities of superoxide dismutase, ascorbate peroxidase, and glutathione reductase in bean leaves
39. Response of potatoes to nitrogen concentrations differ with nitrogen forms
40. Characterization and regulation of ammonium transport systems in Citrus plants
41. + on growth and metabolism of French bean
42. Expression of characterisitics of ammonium nutrition as affected by pH of the root medium
43. Involvement of endogenous plant hormones in the effect of mixed nitrogen source on growth and tillering of wheat
44. Effect of nitrogen form on growth and composition of tomato and pea tissue
45. Nutrient solution growth of sorghum and corn in mineral nutrition studies
46. Effect of ammonium or nitrate nutrition on net photosynthesis, growth, and activity of the enzymes nitrate reductase and glutamine synthetase in blueberry, raspberry and strawberry
47. Nitrate utilization and nitrogen status in English woodland communities
48. Toxic effects of urea on plants
49. Growth and ion uptake by wheat supplied with nitrogen as nitrate, or ammonium, or both
50. The influence of nitrate and ammonium nutrition on the growth of wheat (Triticum aestivum) and maize (Zea mays) plants
51. Amine uncoupling of energy transfer in chloroplasts
52. Growth and nutrition of carob plants as affected by nitrogen sources
53. A weakly voltage-dependent, nonselective cation channel mediates toxic sodium influx in wheat
54. Differential effects of ammonium and nitrate on three heathland species
55. Growth and nutrient uptake of Douglas-fir seedlings at different rates of ammonium supply, with or without additional nitrate and other nutrients
56. Growth and the efficiency of root respiration of Pisum sativum as dependent on the source of nitrogen
57. The inhibition of ammonium uptake by nitrate in wheat
58. 2-dependent acidification of the leaf vacuole upon illumination
59. Ammonium toxicity and nitrate response of axenically grown Dactylorhiza incarnata seedlings
60. Performance of four Dactylorhiza species over a complex trophic gradient
61. Metabolic regulation of the alkaline effect of nitrate utilization in plants
62. Growth and chloroplast ultrastructure of two citrus rootstock seedlings in response to ammonium and nitrate nutrition
63. Glutamine synthetase in Scots pine seedlings and its control by blue light and light absorbed by phytochrome
64. Plant-microbial interactions
65. Interspecies differences in the preference of ammonium and nitrate in vascular plants
66. Importance of ammonium and nitrate to the performance of herb-layer species from deciduous forests in southern Sweden
67. Effects of atmospheric ammonia on vegetation - A review
68. On the gaseous exchange of ammonia between leaves and the environment. Determination of the ammonia compensation point
69. Ethylene evolution and ammonium accumulation by nutrient-stressed tomato plants
70. Ethylene evolution and ammonium accumulation by nutrient-stressed tomatoes grown with inhibitors of ethylene synthesis or action
71. Ethylene evolution and ammonium accumulation by tomato plants with various nitrogen forms and regimes of acidity. I
72. Ethylene evolution and ammonium accumulation by tomato plants under water and salinity stresses. II
73. Inward and outward transport of ammonium in roots of maize and sorghum: Contrasting effects of methionine sulphoximine
74. Source and magnitude of ammonium generation in maize roots
75. A comparative study of ammonium toxicity at different constant pH of the nutrient solution
76. Nitrate transporters in plants: Structure, function and regulation
77. + ratio on strawberry plants. 1. Growth, flowering, and root development
78. Enhanced rates of cleavages and development for sheep zygotes cultured to the blastocyst stage in vitro in absence of serum and somatic cells: Amino acids, vitamins and culturing embryos in groups stimulate development
79. Ammonium and nitrate uptake by Eucalyptus nitens: Effects of pH and temperature
80. Simultaneous measurement of ammonium, nitrate and proton fluxes along the length of eucalypt roots
81. Intracellular pH regulation in maize root tips exposed to ammonium at high external pH
82. Influence of ammonium supply on growth, mineral nutrient and polyamine contents of young maize plants
83. Physiological and biochemical processes related to ammonium toxicity in higher plants
84. The response of some ecologically distinct plant species to nitrate- and to ammonium-nitrogen
85. Nitrogen nutrition of Douglas-fir (Pseudotsuga menziesii), on strongly acid sandy soil. I. Growth, nutrient uptake and ionic balance
86. Rhizosphere pH along different root zones of Douglas-fir (Pseudotsuga menziesii), as affected by source of nitrogen
87. Nature and characterization of ammonium effects on wheat and tomato
88. Metabolic detoxification of ammonia in tissues of higher plants
89. Studies of the uptake of nitrate in barley. 4. Electrophysiology
90. Molecular and physiological aspects of nitrate uptake in plants
91. Nitrogen and base cation uptake in seedlings of Acer pseudoplatanus and Calamagrostis villosa exposed to an acidified environment
92. Influence of ammonium and extracellular pH on the amino and organic acid contents of suspension culture cells of Acer pseudoplatanus
93. The response of some ecologically distinct plant species to nitrate- and to ammonium-nitrogen
94. Seasonal and annual variation in nitrogen mineralization and nitrification along an elevational gradient in New Mexico
95. Nitrogen deposition and its contribution to nitrogen cycling and associated soil processes
96. -
97. Inhibitory effects of ammoniacal nitrogen on growth of radish plants. II. Investigation on the possible causes of ammonium toxicity to radish plants and its reversal by nitrate
98. Essentiality of ammonium for cranberry nutrition
99. + channel in bullfrog oxyntic cells
100. Responses in primary astrocytes and C6-glioma cells to ammonium chloride and dibutyryl cyclic-AMP
101. The effect of ammonium chloride on metabolism of primary neurons and neuroblastoma cells in vitro
102. Review of interaction of ammonium-nitrate and potassium nutrition of crops
103. Effect of nitrogen sources on the chemical components in young plants
104. Macroalgal canopies contribute to eelgrass (Zostera marina) decline in temperate estuarine ecosystems
105. Reduced N-15-nitrogen transport through arbuscular mycorrhizal hyphae to Triticum aestivum L. supplied with ammonium vs. nitrate nutrition
106. Ammonium and nitrate nutrition of plants
107. Flexibility of chloroplast metabolism
108. Fast cytoplasmic pH regulation in acid-stressed leaves
109. Photorespiration is essential for the protection of the photosynthetic apparatus of C3 plants against photoinactivation under sunlight
110. Mixed nitrogen nutrition and productivity of wheat grown in hydroponics
111. Factors controlling nitrate and ammonium accumulation in mustard (Sinapis alba) seedlings
112. Measurement of net fluxes of ammonium and nitrate at the surface of barley roots using ion-selective microelectrodes. II. Patterns of uptake along the root axis and evaluation of the microelectrode flux estimation technique
113. 2+ and pH
114. Effects of ammonium on elemental nutrition of red spruce and indicator plants grown in acid soil
115. Structure, function and regulation of ammonium transporters in plants
116. The effects of urea, biuret ammonia on germination and early growth of corn
117. + in plant tissue, xylem sap, and apoplastic fluid
118. 2 fixation in leaves of tomato plants grown with ammonium and nitrate as nitrogen sources
119. Nitrate ammonium ratio required for pH homeostasis in hydroponically grown soybean
120. Mineral nutrient requirements of Vaccinium vitisidaea and V. myrtillus
121. Inhibition of photosynthetic electron transport and photophosphorylation
122. Endogenous ammonium generation in maize roots and its relationship to other ammonium fluxes
123. The scale of nutrient heterogeneity around individual plants and its quantification with geostatistics
124. Growth suppression and raised tissue chloride contents in ammonium-fed marigold, petunia and salvia
125. Ammonia, glutamine, and asparagine: A carbon-nitrogen interface
126. Ammonium in plant material: Real or artifact?
127. 2
128. Response of primary N metabolism to the N source
129. Characteristics of ammonium uptake by rice cells in suspension culture
130. Carbon and nitrogen metabolism in barley (Hordeum vulgare L.) mutants lacking ferredoxin-dependent glutamate synthase
131. Influence of ammonium and nitrate nutrition on the cation-anion balance and nitrogen and carbohydrate metabolism of white mustard plants grown in dilute nutrient solutions
132. Ionic balance in different tissues of tomato plant in relation to nitrate, urea or ammonium nitrogen
133. + across biological membranes
134. Patterns of nitrogen mineralization and nitrification in floodplain successional soils along the Tanana River, interior Alaska
135. Nitrogen deposition and forest expansion in the northern Great Plains
136. Differential ammonia-elicited changes of cytosolic pH in root hair cells of rice and maize as monitored by 2′,7′-bis-(2-carboxyethyl)-5 (and -6)-carboxyfluorescein-fluorescence ratio
137. Ammonium ingestion prevents depletion of hepatic energy metabolites induced by acute ammonium intoxication
138. Protective action of M- and N-cholinoceptor blockers in acute ammonium intoxication
139. Ammonium and nitrate in the nitrogen economy of some conifers growing in Douglas-fir communities of the Pacific North-West of America
140. Photoinduced quenching of chlorophyll fluorescence in intact chloroplasts and algae
141. Uncouplers of spinach chloroplast photosynthetic phosphorylation
142. Respiration during photosynthesis
143. Compartmentation and flux characteristics of ammonium in spruce
144. + efflux in spruce roots: A test case for phase identification in compartmental analysis
145. + influx in spruce
146. Conifer root discrimination against soil nitrate and the ecology of forest succession
147. + influx and long-distance N translocation in rice: Insights into feedback processes
148. Nitrate-ammonium synergism in rice: A subcellular analysis
149. Inhibition of nitrate uptake by ammonium in barley. Analysis of component fluxes
150. Ammonium toxicity and the real cost of transport
151. Does ammonium affect accumulation of starch in rhizomes of Phragmites australis (Cav) Tin ex Steud?
152. Comparison of the effects of nitrate and ammonium forms of nitrogen on auxin content in roots and the growth of plants under different temperature conditions
153. Element uptake by mycorrhizal soybean from sewage-sludge-treated soil
154. Solute content and energy status of roots of barley plants cultivated at different pH on nitrate- or ammonium-nitrogen
155. Ecological aspects of nitrogen assimilation
156. 14N-nuclear magnetic resonance spectroscopy
157. Diurnal modulation of phosphoenolpyruvate carboxylation in pea leaves and roots as related to tissue malate concentrations and to the nitrogen source
158. Effect of nitrogen source on growth response to salinity stress in maize and wheat
159. A photosynthetic and N investigation of the differential growth response of barley to nitrate, ammonium, and nitrate + ammonium nutrition
160. The relationship of soil and leaf nutrients to rice leaf oranging
161. Effect of nitrate and ammonium on long distance transport in cucumber plants
162. Physiological aspects of ammonium and nitrate fertilization
163. Inhibition of nitrifying bacteria, nitrification, and mineralization of spoil soils as related to their successsional stages
164. Proteinase activities and loss of nitrogen in the senescing leaves of field-grown rice (Oryza sativa L.)
165. Ammonium assimilation in different plant species as affected by nitrogen form and pH control in solution culture
166. Tomato growth and mineral composition as influenced by nitrogen form and light intensity
167. Tomato growth and nutrient uptake patterns as influenced by nitrogen form and light intensity
168. Ammonium toxicity development in tomato plants relative to nitrogen form and light intensity
169. Growth, free amino acids, and mineral composition of tomato plants in relation to nitrogen form and growing media
170. Similarities in response of maize genotypes to water logging and ammonium toxicity
171. Growth and nitrogen metabolism of Catasetum fimbriatum (Orchidaceae) grown with different nitrogen sources
172. Acute ammonia toxicity is mediated by the NMDA type of glutamate receptors
173. The range of free amino acids and amides in tomato plants and the effects of nitrate or ammonium as nutrients
174. Ammonium and nitrate uptake rates and rhizosphere pH in non-mycorrhizal roots of Norway roots (Picea abies L. Karst.)
175. Mechanism of ammonia and ammonium ion toxicity in animal cells: Transport across cell membranes
176. Vacuoles as storage compartments for nitrate in barley leaves
177. Respiratory stress in cucumber roots treated with ammonium or nitrate nitrogen
178. Changes of starch synthestase activity of cucumber leaves during ammonium toxicity
179. Evidence for cotransport of nitrate and proton in maize roots. I. Effects of nitrate on the membrane potential
180. Growth inhibition of hybridoma cells by ammonium ion: Correlation with effects on intracellular pH
181. Toxicity of decomposing corn residues to cotton germination and seedling growth
182. - transport across the plasma membrane of Arabidopsis thaliana root hairs: Kinetic control by pH and membrane voltage
183. Ammonium toxicity: Description of the syndrome in Sinapis alba and the search for its causation
184. Die Wirkung der Ammoniumsalze in ihrer Abhängigkeit von der Wasserstoffionenkonzentration II
185. A comparative study of fluxes and compartmentation of nitrate and ammonium in early-successional tree species
186. A comparative kinetic analysis of nitrate and ammonium influx in two early-successional tree species of temperate and boreal forest ecosystems
187. 2+ release from thapsigargin-sensitive intracellular stores
188. Ammonium toxicity in different cell lines
189. ATP-dependent potassium channel from rat liver mitochondria - Inhibitory analysis, channel clusterization
190. - stoichiometries
191. Different ammonium-ion uptake, metabolism and detoxification efficiencies in two Lemnaceae: A nitrogen-15 nuclear magnetic resonance study
192. Elevation of glutathione levels by ammonium ions in primary cultures of rat astrocytes
193. Redistribution of extractable nutrients following disc trenching on Luvisols and Brunisols in Saskatchewan
194. + concentration in leaves of oilseed rape
195. The ammonium hypothesis - An additional explanation to the forest dieback in Europe
196. + transporter from plants
197. A re-evaluation of the ATP: NADPH budget during C-3 photosynthesis: A contribution from nitrate assimilation and its associated respiratory activity?
198. Primary nitrogen assimilation in higher plants and its regulation
199. pH and buffer capacities of apoplastic and cytoplasmic cell compartments in leaves
200. Species dynamics and nutrient accumulation during early primary succession in coastal sand dunes
201. Influence of ammonium on fine root development and rhizosphere pH of Douglas-fir seedlings in sand
202. Promotion of assimilation of ammonium ions by simultaneous application of nitrate and ammonium ions in radish plants
203. The deposition of atmospheric ammonia and its effects on plants
204. Physiological responses of the opportunistic macroalgae Cladophora vagabunda (L.) van den Hoek and Gracilaria tikvahiae (MacLachlan) to environmental disturbances associated with eutrophication
205. Blueberry response to ammonium nitrogen and nitrate nitrogen
206. Analysis of the membrane potential of rat- and mouse-liver mitochondria by flow cytometry and possible applications
207. Effects of ammonium and nitrate nutrition with and without pH adjustment on tomato growth, ion composition, and water relations
208. Ammonium uptake and cellular alkalanisatin in roots of Arabidopsis thaliana: The involvement of cytoplasmic calcium
209. Antioxidants and manganese deficiency in needles of Norway spruce (Picea abies L.) trees
210. Structure and function of tomato leaf chloroplasts during ammonium toxicity
211. Nitrogen source regulation of growth and photosynthesis in Beta vulgaris L.
212. Methylammonium transport in Phaseolus vulgaris leaf slices
213. Nitrogen assimilation and transport in vascular land plants in relation to intracellular pH regulation
214. + uptake in roots of Arabidopsis thaliana: Evidence for regulation by root glutamine levels
215. Glutamine synthetase and ferredoxin-dependent glutamate synthase expression in the maize (Zea mays) root primary response to nitrate. Evidence for an organ-specific response
216. Field and laboratory experiments on net uptake of nitrate and ammonium by the roots of spruce (Picea abies) and beech (Fagus sylvatica) trees
217. Consequences of high loads of nitrogen for spruce (Picea abies) and beech (Fagus sylvatica) forests
218. Inhibition of nitrification by climax ecosystems
219. Ammonium and nitrate uptake by soybean during recovery from nitrogen deprivation
220. Ammonium assimilation by young plants of Hordeum vulgare in light and darkness - Effects on respiratory oxygen consumption by roots
221. Permeability of ammonia, methylamine and ethylamine in the cyanobacterium Synechococcus R-2 (Anacystis nidulans) PCC7942
222. Estimation of ammonium ion distribution between cytoplasm and vacuole using nuclear magnetic resonance spectroscopy
223. The influence of nitrogen nutrition on the accumulation of free amino acids in root tissue of Urtica dioica and their apical transport of xylem sap
224. Physiology and ecology of nitrogen nutrition
225. The regulation of ammonia uptake in Chara australis
226. A response-regulator homologue possibly involved in nitrogen signal transduction mediated by cytokinin in maize
227. Nitrate and ammonium nutrition in plants
228. Nitrate regulation of zeatin riboside levels in barley roots - Effects of inhibitors of N assimilation and comparison with ammonium
229. Influence of nitrate on uptake of ammonium by nitrogen-depleted soybean: Is the effect located in roots or shoots?
230. Comparison of the uptake of nitrate and ammonium by rice seedlings. Influences of light, temperature, oxygen concentration, exogenous sucrose, and metabolic inhibitors
231. Morphology and physiology of the seminal root-system of young maize (Zea mays L.) plants as influenced by a locally restricted nitrate supply
232. Expression of an inward-rectifying potassium channel by the Arabidopsis KAT1 cDNA
233. The influence of ammonium in nutrient solution on growth and metabolism of cucumber plants
234. Physiological regulation of plant-atmosphere ammonia exchange
235. The regulation of ammonium translocation in plants
236. Ammonium uptake by Chlorella
237. Ammonium tolerance and carbohydrate status in maize cultivars
238. + ATPase
239. + of leucine stimulated islets
240. Mechanisms of nitrate uptake by higher plants
241. Vacuolar pH oscillations in mesophyll cells accompany oscillations of photosynthesis in leaves - Interdependence of cellular compartments, and regulation of electron flow in photosynthesis
242. Cytokinin biochemistry in relation to leaf senescence. 6. Effect of nitrogenous nutrients on cytokinin levels and senescence of tobacco leaves
243. -
244. The occurrence of nitrate reductase in the leaves of woody plants
245. Transport of methylammonium and ammonium ions by Elodea densa
246. Intracellular pH and its regulation
247. Response of chemoautotrophic nitrifiers to forest cutting
248. Potassium channels in the plasmalemma of Nitella cells at rest
249. Replacement of nitrate by ammonium as the nitrogen source increases the salt sensitivity of pea plants. 1. Ion concentrations in roots and leaves
250. Replacement of nitrate by ammonium as the nitrogen source increases the salt sensitivity of pea plants. 2. Intercellular and intracellular solute compartmentation in leaflets
251. High rates of nitrification and nitrate turnover in undisturbed coniferous forests
252. The interaction between elevated carbon dioxide and nitrogen nutrition: The physiological and molecular background
253. + ratio on photosynthetic rates, nitrate reductase activity and chloroplast ultrastructure in three cultivars of red pepper (Capsicum annuum L.)
254. Ammonium, nitrate, and proton fluxes along the maize root
255. Nitrate uptake and reduction in higher and lower plants
256. Cellular compartmentation of ammonium assimilation in rice and barley
257. Root hormones and plant growth
258. L-carnitine protects fish against acute ammonia toxicity
259. +
260. Nitrogen utilization by plant species from acid heathland soils. 1. Comparison between nitrate and ammonium nutrition at constant low pH
261. Nitrate reductase and glutamine synthetase activities in relation to growth and nitrogen assimilation in red oak and red ash seedlings: Effects of N-forms, N concentration and light intensity
262. Ammonium uptake in Lemna gibba G 1, related membrane potential changes, and inhibition of anion uptake
263. Simultaneous influx of ammonium and potassium into maize roots: Kinetics and interactions
264. Nitrogen loading from watersheds to estuaries: Verification of the Waquoit Bay Nitrogen Loading Model
265. Influence of nitrate and ammonium nutrition on the uptake, assimilation, and distribution of nutrients in Ricinus communis
266. Soil acidification from atmospheric ammonium sulfate in forest canopy throughfall
267. Ecosystem effects of atmospheric deposition of nitrogen in the Netherlands
268. Nitrogen mineralization and nitrification in successional ecosystems on the Tanana River floodplain, interior Alaska
269. Air pollution as a possible cause for the decline of some phanerogamic species in the Netherlands
270. Response of conifer seedlings to nitrate and ammonium sources of nitrogen
271. Response of Douglas-fir seedlings to nitrate and ammonium nitrogen sources under various environmental conditions
272. Toxicity of ammonia to plants
273. Nitrogen on microbial and global scales
274. Effects of excessive ammonium deposition on the nutritional status and condition of pine needles
275. Impact of artificial, ammonium-enriched rainwater on soils and young coniferous trees in a greenhouse. 1. Effects on the soils
276. Impact of artificial, ammonium-enriched rainwater on soils and young coniferous trees in a greenhouse. 2. Effects on the trees
277. Ammonium toxicity in eelgrass Zostera marina
278. The effect of N-nutrients on the acceptor pool of PS I and thylakoid energization as measured by chlorophyll fluorescence of Dunaliella salina
279. + pump activity
280. Photoreduction by fresh and aged chloroplasts: Requirements for ascorbate and 2,6-dichlorophenol indophenol with aged chloroplasts
281. Some effects of ammonia on plant metabolism and a possible mechanism for ammonia toxicity
282. Beyond global warming: Ecology and global change
283. A comparative analysis of potential nitrification and nitrate mobility in forest ecosystems
284. Human domination of Earth's ecosystems
285. Effects of exogenously supplied ammonium on root development of Scots Pine (Pinus sylvestris L.) seedlings
286. Different effects of supplied ammonium on glutamine synthetase activity in mustard (Sinapis alba) and pine (Pinus sylvestris) seedlings
287. The molecular physiology of ammonium uptake and retrieval
288. Rapid effects of nitrogen form on leaf morphogenesis in tobacco
289. Potassium homeostasis in vacuolate plant cells
290. Amine uniport at the plasmalemma of charophyte cells I. Current-voltage curves, saturation kinetics, and effects of unstirred layers
291. Amine uniport at the plasmalemma of charophyte cells II. Ratio of matter to charge transported and permeability of free base
292. +
293. + influx across the plasmalemma
294. Ammonium uptake by rice roots. III. Electrophysiology
295. Cytokinins in enhanced growth and tillering of wheat induced by mixed nitrogen source
296. Effect of N source on concentration of Rubisco in Eucalyptus diversicolor, as measured by capillary electrophoresis
297. Effect of ammonium and nitrate nutrition on protein level and exudate composition
298. Intracellular measurement of ammonium in Chara corallina using ion-selective microelectrodes
299. Influence of nitrogen on germination and early development of broomrape (Orobanche spp.)
300. + channel in the plasma membrane of rye roots
301. 13N-ammonium fluxes in the roots of barley and squash seedlings
302. Oxygen reduction in the Mehler reaction is insufficient to protect photosystems I and II of leaves against photoinactivation
303. Differential pH restoration after ammonia-elicited vacuolar alkalisation in rice and maize root hairs as measured by fluorescence ratio
304. The growth of tomato seedlings in relation to the form of the nitrogen supply
305. +-ATPase activity of barley roots by ammonium treatment
306. Effect of low root medium pH on net proton release, root respiration, and root growth of corn (Zea mays L.) and broad bean (Vicia faba L.)
307. Light-dependent proton transport into mesophyll vacuoles of leaves of C-3 plants as revealed by pH-indicating fluorescent dyes: A reappraisal
308. Acquisition and assimilation of gaseous ammonium as revealed by intracellular pH changes in leaves of higher plants
309. The effect of organic manure and potassium in preventing ammonium toxicity in barley
310. +-grown Phaseolus vulgaris L.
311. Nature of substances in phloem
312. + ratio and light intensity