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You searched for: Subject "roots" Remove constraint Subject: "roots" Subject term amino acid metabolism Remove constraint Subject term: amino acid metabolism
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1. Nitrogen Mineralization: Root and Microbial Interactions in Pitch Pine Microcosms

Author:
Robert L. Tate; Laurie O'Reilly; Robert W. Parmelee; Joan G. Ehrenfeld
Source:
Soil Science Society of America journal 1991 v.55 no.4 pp. 1004-1008
ISSN:
0361-5995
Subject:
roots,   etc   ; A horizons; Pinus rigida; Quartzipsamments; acid soils; amino acid metabolism; amino acids; enzyme activity; enzymes; forest ecosystems; forest soils; glucose; microbial biomass; microbial growth; mineralization; nitrogen; nitrogen metabolism; organic horizons; proteolysis; rhizosphere; root growth; sand; seedlings; soil microorganisms;     Show all 24 Subjects
Abstract:
... In forest ecosystems, mineralization of native organic N provides the primary plant N nutrient source. The rate of this N mineralization is affected directly and indirectly by interactions with plant root biomass and is also probably impacted by interactions with the soil microbial community. Thus, the objectives of this study were to evaluate the relationship of N-mineralization rates in an acid ...
DOI:
10.2136/sssaj1991.03615995005500040019x

2. Production of sodium-chloride-tolerant Brassica juncea plants by in vitro selection at the somatic embryo level

Author:
Kirti, P.B.; Hadi, S.; Kumar, P.A.; Chopra, V.L.
Source:
Theoretical and applied genetics 1991 v.83 no.2 pp. 233-237
ISSN:
0040-5752
Subject:
roots,   etc   ; Brassica juncea; salt tolerance; sodium chloride; somatic embryogenesis; embryo (plant); shoots; seed germination; proline; amino acid metabolism; esterases; isozymes;     Show all 12 Subjects
Abstract:
... Somatic embryos, developed from hypocotyl segments of light-grown seedlings of Brassica juncea cv RLM198, were subjected to selection at varying concentrations of sodium chloride (NaCl). Plants were developed from proliferated somatic embryos selected on NaCl-containing medium. The selections were characterized for salt tolerance, esterase isozyme pattern, and proline accumulation. It has been fou ...
DOI:
10.1007/BF00226256
PubMed:
24202363

3. Ammonium assimilation in rice based on the occurrence of 15N and inhibition of glutamine synthetase activity

Author:
Magalhaes, J.R.; Huber, D.M.; Lee, T.C.; Tsai, C.Y.
Source:
Journal of plant nutrition 1995 v.18 no.9 pp. 1861-1873
ISSN:
0190-4167
Subject:
roots,   etc   ; nitrogen metabolism; isotope labeling; nitrogen; Oryza sativa; glutamine; free amino acids; glutamate-ammonia ligase; ammonium sulfate; enzyme inhibitors; enzyme activity; amino acid metabolism; stable isotopes; glutamic acid; shoots;     Show all 15 Subjects
Abstract:
... Assimilation of ammonium (NH4) into free amino acids and total reduced nitrogen (N) was monitored in both roots and shoots of two-week old rice seedlings supplied with 5 mM 99% (15NH4)2SO4 in aerated hydroponic culture with or without a 2 h preincubation with 1 mM methionine sulfoximine (MSX) an inhibitor of glutamine synthetase (GS) activity. 15NH4 was not assimilated into amino acids when the GS ...
DOI:
10.1080/01904169509365028

4. Diurnal variations in growth rate and growth substrate levels of spinach (Spinacia oleracea L.) under nitrogen-limiting conditions

Author:
Buysse, J.; Merckx, R.
Source:
Plant, cell and environment 1995 v.18 no.12 pp. 1419-1426
ISSN:
0140-7791
Subject:
roots,   etc   ; Spinacia oleracea; nitrogen; nutrient deficiencies; nutrient availability; carbohydrate metabolism; glucose; fructose; starch; nitrogen metabolism; amino acid metabolism; free amino acids; shoots; dry matter partitioning; diurnal variation;     Show all 15 Subjects
Abstract:
... Spinach plants were grown in hydroponic culture provided with variable limiting amounts of N. During a complete diurnal cycle, growth of the root and shoot parts, as well as levels of soluble and insoluble sugars and of free amino acids, were monitored. No clear relationship could be detected between the level of N feeding and the levels of free sugars and amino acids. Analysis of variance reveale ...
DOI:
10.1111/j.1365-3040.1995.tb00203.x

5. Regulation of proline accumulation in Arabidopsis thaliana (L.) Heynh during development and in response to desiccation

Author:
Chiang, H.H.; Dandekar, A.M.
Source:
Plant, cell and environment 1995 v.18 no.11 pp. 1280-1290
ISSN:
0140-7791
Subject:
roots,   etc   ; drought; polyethylene glycol; potassium chloride; turgor; proline; water stress; sodium; cytochemistry; amino acid metabolism; leaves; Arabidopsis thaliana; seeds; potassium; sodium chloride; water potential; salinity; free amino acids; flowers;     Show all 19 Subjects
Abstract:
... Significant differences were observed in the amount and proportion of free amino acids in different organs of Arabidopsis thaliana (L.) Heynh, ecotype Columbia. The most notable were found for proline, which formed 17-26% of the total free amino acid concentration in reproductive tissues (floret and seed), but only 1-3% of the total free amino acid concentration in vegetative tissues (rosette leaf ...
DOI:
10.1111/j.1365-3040.1995.tb00187.x

6. Requirement for rhizobial production of 5-aminoimidazole-4-carboxamide ribonucleotide (AICAR) for infection of bean

Author:
Newman, J.D.; Rosovitz, M.J.; Noel, K.D.
Source:
Molecular plant-microbe interactions 1995 v.8 no.3 pp. 407-414
ISSN:
0894-0282
Subject:
roots,   etc   ; adenosine; adenine; biosynthesis; histidine; nucleotides; Phaseolus vulgaris; Rhizobium etli; mutants; nodulation; hypoxanthine; amino acid metabolism; infection;     Show all 13 Subjects
Abstract:
... Exogenous application of the purine precursor 5-aminoimidazole-4-carboxamide (AICA) riboside restores infection and enhances the development of bean (Phaseolus vulgaris) root nodules elicited by Rhizobium etli purine auxotrophs. The uniqueness of AICA riboside as an effector was shown by testing varying concentrations of AICA riboside and purines for this effect, and by examining several mutants d ...
DOI:
10.1094/MPMI-8-0407

7. Differential expression of two P5CS genes controlling proline accumulation during salt-stress requires ABA and is regulated by ABA1, ABI1, and AXR2 in Arabidopsis

Author:
Strizhov, N.; Abraham, E.; Okresz, L.; Blickling, S.; Zilberstein, A.; Schell, J.; Koncz, C.; Szabados, L.
Source:
plant journal 1997 v.12 no.3 pp. 557-569
ISSN:
0960-7412
Subject:
roots,   etc   ; Arabidopsis thaliana; gene expression; abscisic acid; genes; enzymes; proline; salinity; messenger RNA; water stress; chromosome mapping; cell division; auxins; amino acid metabolism; protein synthesis; nucleotide sequences; amino acid sequences; sodium chloride; cell suspension culture; light; mutation;     Show all 21 Subjects
Abstract:
... Proline is a common compatible osmolyte in higher plants. Proline accumulation in response to water stress and salinity is preceded by a rapid increase of the mRNA level of delta 1-pyrroline-5-carboxylate synthase (P5CS) controlling the rate-limiting step of glutamate-derived proline biosynthesis. P5CS is encoded by two differentially regulated genes in Arabidopsis. Gene AtP5CS1 mapped to chromoso ...
DOI:
10.1046/j.1365-313X.1997.00557.x
PubMed:
9351242

8. Effect of the arbuscular mycorrhizal fungus Glomus fasciculatum on the uptake of amino nitrogen by Lolium perenne

Author:
JEAN BERNARD CLIQUET; PHILIP J. MURRAY; JEAN BOUCAUD
Source:
new phytologist 1997 v.137 no.2 pp. 345-349
ISSN:
0028-646X
Subject:
roots,   etc   ; vesicular arbuscular mycorrhizae; serine; aspartic acid; isotope labeling; Lolium perenne; Glomus fasciculatum; nutrient uptake; biomass production; amino nitrogen; amino acid metabolism; nitrates; shoots;     Show all 13 Subjects
Abstract:
... The ability of ryegrass (Lolium perenne L.) to take up and utilize aspartic acid (Asp) and serine (Ser,), and the effect of colonization of the roots by the arbuscular mycorrhizal (AM) fungus Glomus fasciculatum (Thax. sensu Gerd.) were studied. The seedlings were grown under controlled conditions in a series of micro‐lysimeters. All plants were fed with a nutrient solution containing either nitra ...
DOI:
10.1046/j.1469-8137.1997.00810.x

9. Hyoscyamine and proline accumulation in water-stressed Hyoscyamus muticus 'hairy root' cultures

Author:
Halperin, S.J.; Flores, H.E.
Source:
In vitro cellular & developmental biology 1997 v.33 no.3 pp. 240-244
ISSN:
1054-5476
Subject:
roots,   etc   ; Hyoscyamus muticus; tissue culture; genetic transformation; Rhizobium rhizogenes; water stress; mannitol; proline; amino acid metabolism; putrescine; tropane alkaloids; biosynthesis; osmotic pressure;     Show all 13 Subjects
DOI:
10.1007/s11627-997-0030-x

10. Altered amino acid metabolism in root-knot nematode inoculated cotton plants

Author:
Hedin, P.A.; Creech, R.G.
Source:
Journal of agricultural and food chemistry 1998 v.46 no.10 pp. 4413-4415
ISSN:
0021-8561
Subject:
roots,   etc   ; protein synthesis; Meloidogyne incognita; Gossypium; pest resistance; protein content; amino acid metabolism; infection; plant proteins;     Show all 9 Subjects
Abstract:
... The root-knot nematode (RKN), Meloidogyne incognita (Kofoid and White) Chitwood, is a sedentary endoparasite that retards growth and development of cotton, Gossypium spp. L., by attacking the root system, causing galling, stunting, and other adverse effects. All commercial cultivars have susceptibility to RKN, although they vary in degree of susceptibility. Plant breeding has led to the developmen ...
DOI:
10.1021/jf980411n

11. Ammonia emissions to the atmosphere from leaves of wild plants and Hordeum vulgare treated with methionine sulphoximine

Author:
Pearson, J.; Clough, E.C.M.; Woodall, J.; Havill, D.C.; Zhang, X.H.
Source:
New phytologist 1998 v.138 no.1 pp. 37-48
ISSN:
0028-646X
Subject:
roots,   etc   ; ammonia; gases; glutamate-ammonia ligase; Mercurialis perennis; interspecific variation; stems; Hordeum vulgare; cell walls; amino acid metabolism; Rubus plicatus; ammonium compounds; enzyme inhibitors; emissions; Primulaceae; enzyme activity; pH; chemical constituents of plants; stomata; England; Scotland;     Show all 21 Subjects
DOI:
10.1046/j.1469-8137.1998.00880.x

12. Effects of genetic modification of nitrate reductase expression on 15NO3- uptake and reduction in Nicotiana plants

Author:
Gojon, A.; Dapoigny, L.; Lejay, L.; Tillard, P.; Rufty, T.W.
Source:
Plant, cell and environment 1998 v.21 no.1 pp. 43-53
ISSN:
0140-7791
Subject:
roots,   etc   ; genetic transformation; nitrogen metabolism; nitrate reductase; transgenic plants; nutrient uptake; gene expression; amino acids; Nicotiana tabacum; leaves; genotype; Nicotiana plumbaginifolia; enzyme activity; amino acid metabolism; nitrates; shoots;     Show all 16 Subjects
Abstract:
... The physiological consequences for NO3(-) utilization by the plant of underexpression and overexpression of nitrate reductase (NR) were investigated in nine transformants of Nicotiana tabacum and Nicotiana plumbaginifolia. The in vitro NR activities (NRAs) in both roots and leaves of low- and high-NR tobacco transformants ranged from 5-10% to 150-200%, respectively, of those measured in wild-type ...
DOI:
10.1046/j.1365-3040.1998.00269.x

13. Enhanced carbon dioxide leads to a modified diurnal rhythm of nitrate reductase activity in older plants, and a large stimulation of nitrate reductase activity and higher levels of amino acids in young tobacco plants

Author:
Geiger, M.; Walch-Liu, P.; Engels, C.; Harnecker, J.; Schulze, E.D.; Ludewig, F.; Sonnewald, U.; Scheible, W.R.; Stitt, M.
Source:
Plant, cell and environment 1998 v.21 no.3 pp. 253-268
ISSN:
0140-7791
Subject:
roots,   etc   ; serine; nitrate reductase; age; light intensity; source-sink relationships; carbon dioxide; glucose; nutrient uptake; starch; gene expression; Nicotiana tabacum; fructose; amino acid metabolism; leaves; messenger RNA; photorespiration; glutamine; sucrose; nutrient requirements; photoperiod; glycine (amino acid); enzyme activity; biomass; protein synthesis; diurnal variation; chemical constituents of plants; nitrates;     Show all 28 Subjects
Abstract:
... Higher rates of nitrate assimilation are required to support faster growth in enhanced carbon dioxide. To investigate how this is achieved, tobacco plants were grown on high nitrate and high light in ambient and enhanced (700 micromoles mol-1) carbon dioxide. Surprisingly, enhanced carbon dioxide did not increase leaf nitrate reductase (NR) activity in the middle of the photoperiod. Possible reaso ...
DOI:
10.1046/j.1365-3040.1998.00277.x

14. Field and laboratory experiments on net uptake of nitrate and ammonium by the roots of spruce (Picea abies) and beech (Fagus sylvatica) trees

Author:
ARTHUR GESSLER; STEPHAN SCHNEIDER; DOMINIK VON SENGBUSCH; PAUL WEBER; ULRIKE HANEMANN; CHRISTIAN HUBER; ANDREAS ROTHE; KARL KREUTZER; HEINZ RENNENBERG
Source:
new phytologist 1998 v.138 no.2 pp. 275-285
ISSN:
0028-646X
Subject:
roots,   etc   ; soil temperature; seasonal variation; nitrates; soil chemistry; nutrient uptake; Picea abies; amino acid metabolism; aspartic acid; glutamine; arginine; ammonium compounds; phloem; gamma-aminobutyric acid; Fagus sylvatica; asparagine; ions; nutrient-nutrient interactions; nutrient availability; chemical constituents of plants; glutamic acid; Germany;     Show all 22 Subjects
Abstract:
... During the vegetation periods 1994 and 1995, net uptake of nitrate and ammonium by roots of adult spruce (Picea abies (L.) Karst) and beech (Fagus sylvatica L.) trees was studied at a field site exposed to high loads of N (‘Höglwald’, Germany). In addition, uptake experiments were carried out under controlled conditions with young spruce and beech trees grown at normal N supply. In the field, nitr ...
DOI:
10.1046/j.1469-8137.1998.00107.x

15. Mutations in Arabidopsis thaliana genes involved in the tryptophan biosynthesis pathway affect root waving on tilted agar surfaces

Author:
Rutherford, R.; Gallois, P.; Masson, P.H.
Source:
plant journal 1998 v.16 no.2 pp. 145-154
ISSN:
0960-7412
Subject:
roots,   etc   ; Arabidopsis thaliana; mutants; tryptophan; amino acid metabolism; genes; root systems; agarose; growing media; aminobenzoic acids; seedlings; shoots; oxo-acid-lyases; hydro-lyases; mutation; phenotype; indole acetic acid;     Show all 17 Subjects
Abstract:
... Arabidopsis thaliana roots grow in a wavy pattern upon a slanted surface. A novel mutation in the anthranilate synthase alpha 1 (ASA1) gene, named trp5-2(wvc1), and mutations in the tryptophan synthase alpha and beta 1 genes (trp3-1 and trp2-1, respectively) confer a compressed root wave phenotype on tilted agar surfaces. When trp5-2(wvc1) seedlings are grown on media supplemented with anthranilat ...
DOI:
10.1046/j.1365-313x.1998.00279.x
PubMed:
9839461

16. Nitrate reductase, phosphoenolpyruvate carboxylase, and glutamine synthetase in annual ryegrass as affected by salinity and nitrogen

Author:
Sagi, M.; Dovrat, A.; Kipnis, T.; Lips, H.
Source:
Journal of plant nutrition 1998 v.21 no.4 pp. 707-723
ISSN:
0190-4167
Subject:
roots,   etc   ; ammonium nitrate; sodium nitrate; application rate; nitrate reductase; salinity; phosphoenolpyruvate carboxylase; nitrogen; organic acids and salts; glutamate-ammonia ligase; cations; nutrient solutions; chemical constituents of plants; enzyme activity; amino acid metabolism; ammonium sulfate; Lolium multiflorum; shoots;     Show all 18 Subjects
Abstract:
... The concentration of organic acids, organic nitrogen (N), nitrate (NO3), and total cations increased in annual ryegrass (Lolium multiflorum Lam.) with salinity and N concentration in the growth medium. Increasing salinity and N in the growth medium induced changes in the level of key enzymes of N assimilation and organic acids: nitrate reductase (NR, EC 1.6.6.1), phosphoenolpyruvate carboxylase (P ...
DOI:
10.1080/01904169809365437

17. Photosynthate costs associated with the utilization of different nitrogen-forms: influence on the carbon balance of plants and shoot-root biomass partitioning

Author:
Zerihun, A.; McKenzie, B.A.; Morton, J.D.
Source:
New phytologist 1998 v.138 no.1 pp. 1-11
ISSN:
0028-646X
Subject:
roots,   etc   ; Phaseolus vulgaris; nitrogen; carbon; dry matter partitioning; shoots; amino acid metabolism; glucose; protein synthesis; pH; nitrates; glutamine; ammonium compounds; photosynthates; root shoot ratio;     Show all 15 Subjects
DOI:
10.1046/j.1469-8137.1998.00893.x

18. The influence of elevated rhizosphere dissolved inorganic carbon concentrations on respiratory O2 and CO2 flux in tomato roots

Author:
Van der Westhuizen, M.M.; Cramer, M.D.
Source:
Journal of experimental botany 1998 v.49 no.329 pp. 1977-1985
ISSN:
0022-0957
Subject:
roots,   etc   ; gas exchange; ion transport; carbon; carbon dioxide; rhizosphere; nutrient uptake; electron transfer; anions; potassium cyanide; nutrient solutions; plasma membrane; amino acid metabolism; oxygen; phosphoenolpyruvate carboxylase; enzyme inhibitors; enzyme activity; Solanum lycopersicum var. lycopersicum; carbonate dehydratase; nutrient availability; biochemical pathways; nitrates; salicylic acids;     Show all 23 Subjects
Abstract:
... Respiratory CO2 and O2 flux were measured in hydroponically grown Lycopersicon esculentum (L.) Mill. cv. F144 plants at either low (0 micromole mol-1) or elevated CO2 concentrations (>2000 micromole mol-1) supplied to the roots. In NO2--fed plants the consumption of O2 and the engagement of the alternative pathway were increased by elevated dissolved inorganic carbon (DIC=CO2+ HCO3-) concentration ...
DOI:
10.1093/jxb/49.329.1977

19. Transport of amino acids with special emphasis on the synthesis and transport of asparagine in the Illinois Low Protein and Illinois High Protein strains of maize

Author:
Lohaus, G.; Buker, M.; Hussmann, M.; Soave, C.; Heldt, H.W.
Source:
Planta 1998 v.205 no.2 pp. 181-188
ISSN:
0032-0935
Subject:
roots,   etc   ; nitrate reductase; malic acid; aspartate-ammonia ligase; starch; varieties; gene expression; amino nitrogen; hexoses; amino acid metabolism; root shoot ratio; leaves; Zea mays; messenger RNA; seeds; sucrose; strain differences; translocation (plant physiology); phloem; xylem; enzyme activity; asparagine; chemical constituents of plants; protein content;     Show all 24 Subjects
Abstract:
... In order to understand the metabolic processes governing the protein content in maize grains, we compared metabolic parameters of the two maize strains Illinois High Protein (IHP) and Illinois Low Protein (ILP), which differ largely in their relative starch and protein content. The activity of nitrate reductase (NR) and the transcription level of asparagine synthetase, two enzymes that play a cent ...
DOI:
10.1007/s004250050310

20. Proline accumulation in maize (Zea mays L.) primary roots at low water potentials. II. Metabolic source of increased proline deposition in the elongation zone

Author:
Verslues, P.E.; Sharp, R.E.
Source:
Plant physiology 1999 v.119 no.4 pp. 1349-1360
ISSN:
0032-0889
Subject:
roots,   etc   ; Zea mays; biosynthesis; isotope labeling; water potential; seedlings; ornithine; proline; histochemistry; active transport; amino acid metabolism; glutamic acid;     Show all 12 Subjects
Abstract:
... The proline (Pro) concentration increases greatly in the growing region of maize (Zea mays L.) primary roots at low water potentials (psi(w)), largely as a result of an increased net rate of Pro deposition. Labeled glutamate (Glu), ornithine (Orn), or Pro was supplied specifically to the root tip of intact seedlings in solution culture at high and low psi(w) to assess the relative importance of Pr ...

21. Ammonium and nitrate assimilation in Narcissus roots

Author:
Ruamrungsri, S.; Ikarashi, T.; Ohyama, T.
Source:
Journal of horticultural science & biotechnology 2000 v.75 no.2 pp. 223-227
ISSN:
1462-0316
Subject:
roots,   etc   ; Narcissus; cultivars; nitrates; nutrient uptake; isotope labeling; asparagine; glutamine; nitrogen metabolism; amino acid metabolism; application rate; duration; ammonium compounds;     Show all 13 Subjects

22. Identification of an Arabidopsis thaliana mutant accumulating threonine resulting from mutation in a new dihydrodipicolinate synthase gene

Author:
Sarrobert, C.; Thibaud, M.C.; Contard-David, P.; Gineste, S.; Bechtold, N.; Robaglia, C.; Nussaume, L.
Source:
plant journal 2000 v.24 no.3 pp. 357-367
ISSN:
0960-7412
Subject:
roots,   etc   ; promoter regions; hydro-lyases; threonine; phenotype; gene expression; amino acid metabolism; Arabidopsis thaliana; lysine; aspartic acid; pyruvic acid; mutation; amino acid sequences; toxicity; biosynthesis; mutants; reporter genes; beta-glucuronidase;     Show all 18 Subjects
DOI:
10.1046/j.1365-313x.2000.00884.x
PubMed:
11069709

23. Increasing tryptophan synthesis in a forage legume Astragalus sinicus by expressing the tobacco feedback-insensitive anthranilate synthase (ASA2) gene

Author:
Cho, H.J.; Brotherton, J.E.; Song, H.S.; Widholm, J.M.
Source:
Plant physiology 2000 v.123 no.3 pp. 1069-1076
ISSN:
0032-0889
Subject:
roots,   etc   ; Nicotiana tabacum; Astragalus sinicus; tryptophan; amino acid metabolism; oxo-acid-lyases; gene expression; transgenic plants; complementary DNA; genetic transformation; enzyme activity; leaves; stems; promoter regions; nucleic acid hybridization; tissue culture; application rate;     Show all 17 Subjects
Abstract:
... A cDNA clone that encodes a feedback-insensitive anthranilate synthase (AS), ASA2, isolated from a 5-methyl-tryptophan (Trp) (5MT)-resistant tobacco cellline under the control of the constitutive cauliflower mosaic virus 35S promoter, was introduced into the forage legume Astragalus sinicus by Agrobacterium rhizogenes with kanamycin selection. The 35S-ASA2 gene was expressed constitutively as demo ...
PubMed:
10889256
PubMed Central:
PMC59070

24. RETRACTION: Inhibition of plant asparagine synthetase by monoterpene cineoles.

Author:
Romagni, J.G.; Duke, S.O.; Dayan, F.E.
Source:
Plant physiology 2000 v.123 no.2 pp. 725-732
ISSN:
0032-0889
Subject:
roots,   etc   ; asparagine; nutrient transport; application rate; nitrogen; seedlings; Lactuca sativa; cineole; isomers; enzyme inhibitors; cinmethylin; structure-activity relationships; plant physiology; amino acid metabolism;     Show all 14 Subjects

25. Regulation of high-affinity nitrate transporter genes and high-affinity nitrate influx by nitrogen pools in roots of barley

Author:
Vidmar, J.J.; Zhuo, D.; Siddiqi, M.Y.; Schjoerring, J.K.; Touraine, B.; Glass, A.D.M.
Source:
Plant physiology 2000 v.123 no.1 pp. 307-318
ISSN:
0032-0889
Subject:
roots,   etc   ; Hordeum vulgare; nitrates; nutrient uptake; ion transport; nitrogen; nitrogen content; nutrient transport; genes; seedlings; amino acids; messenger RNA; amino acid metabolism;     Show all 13 Subjects
PubMed:
10806247
PubMed Central:
PMC59004

26. Expression of a Pseudomonas putida aminotransferase involved in lysine catabolism is induced in the rhizosphere

Author:
Espinosa-Urgel, M.; Ramos, J.L.
Source:
Applied and environmental microbiology 2001 v.67 no.11 pp. 5219-5224
ISSN:
0099-2240
Subject:
roots,   etc   ; lysine; rhizosphere; Zea mays; transaminases; luciferase; root exudates; gene expression; nucleotide sequences; reporter genes; bioluminescence; mutants; amino acid metabolism; Pseudomonas putida;     Show all 14 Subjects
Abstract:
... Using a transposon carrying a promoterless lux operon to generate transcriptional fusions by insertional mutagenesis, we have identified a Pseudomonas putida gene with increased expression in the presence of corn root exudates. Expression of the transcriptional fusion, induced by the amino acid lysine, was detected in P. putida in the rhizosphere of plants as well as in response to seed exudates. ...
DOI:
10.1128/AEM.67.11.5219-5224.2001
PubMed:
11679348
PubMed Central:
PMC93293

27. Free amino acids in walnut kernels and young seedlings

Author:
Mapelli, S.; Brambilla, I.; Bertani, A.
Source:
Tree physiology 2001 v.21 no.17 pp. 1299-1302
ISSN:
0829-318X
Subject:
roots,   etc   ; seed germination; Juglans regia; stems; free amino acids; seedlings; nutrient availability; citrulline; alanine; cotyledons; embryo (animal); translocation (plant physiology); chemical constituents of plants; xylem; amino acid metabolism; leaves;     Show all 16 Subjects
Abstract:
... We investigated the composition of free amino acids in walnut (Juglans regia L.) seeds (embryo and cotyledons). We also examined xylem transport of free amino acids in young seedlings grown in the absence of external nutrients. A relatively high concentration of free alanine was found in seed tissue, whereas a relatively high concentration of citrulline was detected in young seedlings. Citrulline ...
DOI:
10.1093/treephys/21.17.1299
PubMed:
11696417

28. The rhizofiltration of sodium from hydroponic fluid using scented geraniums

Author:
Garnett, M.R.; Murch, S.J.; Krishnaraj, S.; Dixon, M.A.; Saxena, P.K.
Source:
Water, air, and soil pollution 2002 v.140 no.1/4 pp. 343-366
ISSN:
0049-6979
Subject:
roots,   etc   ; salt tolerance; salinity; phytotoxicity; fluorescence; free amino acids; bioremediation; proline; hydroponics; photosystem II; Pelargonium; nutrient solutions; sodium chloride; chemical constituents of plants; plant physiology; chlorophyll; amino acid metabolism; shoots;     Show all 18 Subjects

29. Enhancement of the primary flavor compound methional in potato by increasing the level of soluble methionine

Author:
Di, R.; Kim, J.; Martin, M.N.; Leustek, T.; Jhoo, J.; Ho, C.T.; Tumer, N.E.
Source:
Journal of agricultural and food chemistry 2003 v.51 no.19 pp. 5695-5702
ISSN:
0021-8561
Subject:
roots,   etc   ; genetic transformation; gene transfer; lyases; biosynthesis; complementary DNA; transgenic plants; Agrobacterium radiobacter; Solanum tuberosum; gene expression; tubers; potatoes; methionine; flavor compounds; food composition; enzyme activity; amino acid metabolism; leaves;     Show all 18 Subjects
Abstract:
... The primary flavor compound in potato, methional, is synthesized from methionine by the Strecker degradation reaction. A major problem associated with potato processing is the loss of methional. Methional or its precursor, methionine, is not added back during potato processing due to high costs of production. A novel approach to enhance the methional level in processed potato would be to increase ...
DOI:
10.1021/jf030148c

30. In vitro reconstitution of rice anthranilate synthase: distinct functional properties of the alpha subunits OASA1 and OASA2

Author:
Kanno, T.; Kasai, K.; Ikejiri-Kanno, Y.; Wakasa, K.; Tozawa, Y.
Source:
Plant molecular biology 2004 v.54 no.1 pp. 11-23
ISSN:
0167-4412
Subject:
roots,   etc   ; Oryza sativa; rice; complementary DNA; structural genes; oxo-acid-lyases; nucleotide sequences; amino acid sequences; enzyme activity; transcription (genetics); messenger RNA; tryptophan; amino acid metabolism; leaves;     Show all 14 Subjects
Abstract:
... Anthranilate synthase (AS) is a key enzyme in the biosynthesis of various indole compounds including tryptophan. AS consists of two subunits, alpha and beta, and converts chorismate to anthranilate. Two or more AS alpha-subunit genes have been identified and characterized in several land plants. Although alpha subunits of AS induced by elicitation have been suggested to play significant roles in s ...
PubMed:
15159631

31. Phosphoenolpyruvate carboxykinase in cucumber plants is increased both by ammonium and by acidification, and is present in the phloem

Author:
Zhi-Hui Chen; Robert P. Walker; László I. Técsi; Peter J. Lea; Richard C. Leegood
Source:
Planta 2004 v.219 no.1 pp. 48-58
ISSN:
0032-0935
Subject:
roots,   etc   ; Cucumis sativus; NAD (coenzyme); acidification; amino acid metabolism; amino acids; ammonium chloride; butyric acid; carbon; carbon dioxide; cells; cotyledons; cucumbers; energy requirements; flowers; gluconeogenesis; immunohistochemistry; pH; petioles; phloem; phosphoenolpyruvate carboxylase; protons; seedlings; stems; tricarboxylic acid cycle; vascular bundles;     Show all 26 Subjects
Abstract:
... In cucumber (Cucumis sativus L.), phosphoenolpyruvate carboxykinase (PEPCK) was shown by activity measurements and immunoblots to be present in leaves, stems, roots, flowers, fruit and seed. However, immunolocalisation showed that it was present only in certain cell types. PEPCK was present in the companion cells of the adaxial phloem of minor veins, the adaxial and abaxial phloem of larger veins, ...
DOI:
10.1007/s00425-004-1220-y
PubMed:
14991407

32. Constitutively High Expression of the Histidine Biosynthetic Pathway Contributes to Nickel Tolerance in Hyperaccumulator Plants

Author:
Ingle, Robert A.; Mugford, Sam T.; Rees, Jonathan D.; Campbell, Malcolm M.; Smith, J. Andrew C.
Source:
plant cell 2005 v.17 no.7 pp. 2089-2106
ISSN:
1040-4651
Subject:
roots,   etc   ; messenger RNA; pentosyltransferases; complementary DNA; Alyssum montanum; gene expression; nucleotide sequences; nickel; metal tolerance; amino acid metabolism; histidine; hyperaccumulators;     Show all 12 Subjects
Abstract:
... Plants that hyperaccumulate Ni exhibit an exceptional degree of Ni tolerance and the ability to translocate Ni in large amounts from root to shoot. In hyperaccumulator plants in the genus Alyssum, free His is an important Ni binding ligand that increases in the xylem proportionately to root Ni uptake. To determine the molecular basis of the His response and its contribution to Ni tolerance, transc ...
DOI:
10.1105/tpc.104.030577
PubMed:
15923352
PubMed Central:
PMC1167554

33. Ectopic Expression of an Amino Acid Transporter (VfAAP1) in Seeds of Vicia narbonensis and Pea Increases Storage Proteins

Author:
Rolletschek, Hardy; Hosein, Felicia; Miranda, Manoela; Heim, Ute; Götz, Klaus-Peter; Schlereth, Armin; Borisjuk, Ljudmilla; Saalbach, Isolde; Wobus, Ulrich; Weber, Hans
Source:
Plant physiology 2005 v.137 no.4 pp. 1236-1249
ISSN:
0032-0889
Subject:
roots,   etc   ; plant biochemistry; plant response; Pisum sativum; metabolites; plant proteins; carbohydrate metabolism; faba beans; nutrient uptake; dry matter accumulation; gene expression; amino acids; amino acid metabolism; storage proteins; plant growth; Vicia faba; seeds; Vicia narbonensis; plant genetics; biosynthesis; transgenes; transgenic plants; amino acid transporters; biochemical pathways; globulins;     Show all 25 Subjects
Abstract:
... Storage protein synthesis is dependent on available nitrogen in the seed, which may be controlled by amino acid import via specific transporters. To analyze their rate-limiting role for seed protein synthesis, a Vicia faba amino acid permease, VfAAP1, has been ectopically expressed in pea (Pisum sativum) and Vicia narbonensis seeds under the control of the legumin B4 promoter. In mature seeds, sta ...
DOI:
10.1104/pp.104.056523
PubMed:
15793070
PubMed Central:
PMC1088317

34. Fermentative metabolism is induced by inhibiting different enzymes of the branched-chain amino acid biosynthesis pathway in pea plants

Author:
Zabalza, A.; Gonzalez, E.M.; Arrese-Igor, C.; Royuela, M.
Source:
Journal of agricultural and food chemistry 2005 v.53 no.19 pp. 7486-7493
ISSN:
0021-8561
Subject:
roots,   etc   ; Pisum sativum; peas; amino acid metabolism; branched chain amino acids; enzymes; enzyme activity; fermentation; plant physiology; enzyme inhibitors; herbicidal properties; chlorsulfuron; imazethapyr;     Show all 13 Subjects
Abstract:
... The inhibition of branched-chain amino acid (BCAA) biosynthesis was evaluated in pea plants in relation to the ability for induction of fermentative metabolism under aerobic conditions. Chlorsulfuron and imazethapyr (inhibitors of acetolactate synthase, ALS, EC 4.1.3.18) produced a strong induction of pyruvate decarboxylase (PDC, EC 4.1.1.1) and alcohol dehydrogenase (ADH, EC 1.1.1.1) activities a ...
DOI:
10.1021/jf050654x

35. Expression of the Arabidopsis feedback-insensitive anthranilate synthase holoenzyme and tryptophan decarboxylase genes in Catharanthus roseus hairy roots

Author:
Hong, S.B.; Peebles, C.A.M.; Shanks, J.V.; San, K.Y.; Gibson, S.I.
Source:
Journal of biotechnology 2006 v.122 no.1 pp. 28-38
ISSN:
0168-1656
Subject:
roots,   etc   ; Catharanthus roseus; transgenic plants; genetic transformation; Rhizobium rhizogenes; gene transfer; Arabidopsis thaliana; carboxy-lyases; complementary DNA; gene expression; amino acid metabolism; tryptophan; tryptamine; biosynthesis; enzyme activity;     Show all 15 Subjects
DOI:
10.1016/j.jbiotec.2005.08.008

36. Nitrogen Assimilation Studies Using 15N in Soybean Plants Treated with Imazethapyr, an Inhibitor of Branched-Chain Amino Acid Biosynthesis

Author:
Zabalza, A.; Gaston, S.; Ribas-Carbo, M.; Orcaray, L.; Igal, M.; Royuela, M.
Source:
Journal of agricultural and food chemistry 2006 v.54 no.23 pp. 8818-8823
ISSN:
0021-8561
Subject:
roots,   etc   ; Glycine max; soybeans; amino acid metabolism; branched chain amino acids; nitrogen metabolism; nitrogen; stable isotopes; imazethapyr; nitrates; nitrate nitrogen; nutrient uptake; translocation (plant physiology); leaves; nitrate reductase; enzyme activity; enzyme inhibition;     Show all 17 Subjects
Abstract:
... The pattern of nitrogen assimilation in soybean plants treated with a herbicide that inhibits branched-chain amino acid biosynthesis was evaluated by 15N isotopic analysis. The herbicide imazethapyr caused a strong decrease in nitrate uptake by roots, partly due to a reduced stomatal conductance. The inhibition of 15N uptake was accompanied by a decrease in the 15N content in the plant and, concom ...
DOI:
10.1021/jf0618224

37. Glutamate in plants: metabolism, regulation, and signalling

Author:
Forde, Brian G.; Lea, Peter J.
Source:
Journal of experimental botany 2007 v.58 no.9 pp. 2339-2358
ISSN:
0022-0957
Subject:
roots,   etc   ; ammonia; ion channels; glutamate dehydrogenase; soil nutrients; transaminases; arginine; deamination; glutamate synthase (NADH); glutamate-ammonia ligase; biochemical pathways; glutamates; signal transduction; genes; receptors; amino acid metabolism; glutamic acid; soil-plant interactions;     Show all 18 Subjects
Abstract:
... Glutamate occupies a central position in amino acid metabolism in plants. The acidic amino acid is formed by the action of glutamate synthase, utilizing glutamine and 2-oxoglutarate. However, glutamate is also the substrate for the synthesis of glutamine from ammonia, catalysed by glutamine synthetase. The α-amino group of glutamate may be transferred to other amino acids by the action of a wide r ...
DOI:
10.1093/jxb/erm121
PubMed:
17578865

38. The Molecular Basis of Shoot Responses of Maize Seedlings to Trichoderma harzianum T22 Inoculation of the Root: A Proteomic Approach

Author:
Shoresh, Michal; Harman, Gary E.
Source:
Plant physiology 2008 v.147 no.4 pp. 2147-2163
ISSN:
0032-0889
Subject:
roots,   etc   ; ionization; seedlings; plant pathogens; genes; mass spectrometry; shoots; two-dimensional gel electrophoresis; plant diseases and disorders; proteome; cell walls; biological control agents; starch; root inoculation; disease resistance; photosynthesis; Trichoderma lixii; gene expression regulation; amino acid metabolism; plant growth; Zea mays; corn; induced resistance; proteins; protein synthesis; stress response; desorption;     Show all 27 Subjects
Abstract:
... Trichoderma spp. are effective biocontrol agents for several soil-borne plant pathogens, and some are also known for their abilities to enhance systemic resistance to plant diseases and overall plant growth. Root colonization with Trichoderma harzianum Rifai strain 22 (T22) induces large changes in the proteome of shoots of maize (Zea mays) seedlings, even though T22 is present only on roots. We c ...
DOI:
10.1104/pp.108.123810
PubMed:
18562766
PubMed Central:
PMC2492612

39. Arginine metabolism in roots and leaves of apple (Malus domestica Borkh.): The tissue-specific formation of both nitric oxide and polyamines

Author:
Gao, Hua-Jun; Yang, Hong-Qiang; Wang, Jia-Xi
Source:
Scientia horticulturae 2009 v.119 no.2 pp. 147-152
ISSN:
0304-4238
Subject:
roots,   etc   ; Malus domestica; apples; leaves; arginine; amino acid metabolism; nitric oxide; polyamines; nitric oxide synthase; biochemical pathways; arginine decarboxylase; arginase; ornithine decarboxylase; developmental stages; plant development; plant age; spatial variation;     Show all 17 Subjects
Abstract:
... In addition to serving as an important nitrogen reserve, l-Arginine participates in various physiological processes in plants. In plants, like in animals, nitric oxide (NO) is synthesized through nitric oxide synthase (NOS) pathway, while polyamines (PAs) are through arginine decarboxylase (ADC) and/or arginase-ornithine decarboxylase (ODC) pathway in arginine metabolism. In this study, arginine m ...
DOI:
10.1016/j.scienta.2008.07.034

40. Comparative Analysis of Expression Profiles in Shoots and Roots of Tomato Systemically Infected by Tomato spotted wilt virus Reveals Organ-Specific Transcriptional Responses

Author:
Catoni, Marco; Miozzi, Laura; Fiorilli, Valentina; Lanfranco, Luisa; Accotto, Gian Paolo
Source:
Molecular plant-microbe interactions 2009 v.22 no.12 pp. 1504-1513
ISSN:
0894-0282
Subject:
roots,   etc   ; tomatoes; plant viruses; plant tissues; plant diseases and disorders; ethylene; microarray technology; shoots; signal transduction; transcription (genetics); gene expression; secondary metabolites; resistance mechanisms; abscisic acid; amino acid metabolism; Tomato spotted wilt orthotospovirus; Solanum lycopersicum var. lycopersicum;     Show all 17 Subjects
Abstract:
... Tomato (Solanum lycopersicon), a model species for the family Solanaceae, is severely affected by Tomato spotted wilt virus (TSWV) worldwide. To elucidate the systemic transcriptional response of plants to TSWV infection, microarray experiments were performed on tomato. Parallel analysis of both shoots and roots revealed organ-specific responses, although the virus was present in similar concentra ...
DOI:
10.1094/MPMI-22-12-1504
PubMed:
19888816

41. Differences in C metabolism of ash species and provenances as a consequence of root oxygen deprivation by waterlogging

Author:
Jaeger, Carsten; Gessler, Arthur; Biller, Steffen; Rennenberg, Heinz; Kreuzwieser, Jürgen
Source:
Journal of experimental botany 2009 v.60 no.15 pp. 4335-4345
ISSN:
0022-0957
Subject:
roots,   etc   ; Fraxinus angustifolia; Fraxinus excelsior; alanine; alcoholic fermentation; amino acid metabolism; carbohydrates; carbon dioxide; flooded conditions; flooding tolerance; forest management; gamma-aminobutyric acid; hypoxia; metabolites; oxygen; photosynthesis; plant adaptation; provenance; riparian forests; seedlings; soil; stress response; trees;     Show all 23 Subjects
Abstract:
... The waterlogging tolerance and the physiological responses to this stress were tested in seedlings of Fraxinus angustifolia, an ash tree inhabiting riparian forests, and two provenances of the closely related Fraxinus excelsior, one derived from a riparian forest (FER) and one from a mountainous region (FEM). Besides visible damage, physiological parameters reflecting adaptations of plants to wate ...
DOI:
10.1093/jxb/erp268
PubMed:
19717531

42. Differential Response of Gray Poplar Leaves and Roots Underpins Stress Adaptation during Hypoxia

Author:
Kreuzwieser, Jürgen; Hauberg, Jost; Howell, Katharine A.; Carroll, Adam; Rennenberg, Heinz; Millar, A. Harvey; Whelan, James
Source:
Plant physiology 2009 v.149 no.1 pp. 461-473
ISSN:
0032-0889
Subject:
roots,   etc   ; Populus canescens; carbon; hypoxia; shoots; fermentation; cell walls; starch; cellulose; metabolome; amino acid metabolism; leaves; messenger RNA; nitrogen metabolism; energy; nutrient transport; sucrose; phloem; physiological response; biosynthesis; nitrogen; biochemical pathways;     Show all 22 Subjects
Abstract:
... The molecular and physiological responses of gray poplar (Populus x canescens) following root hypoxia were studied in roots and leaves using transcript and metabolite profiling. The results indicate that there were changes in metabolite levels in both organs, but changes in transcript abundance were restricted to the roots. In roots, starch and sucrose degradation were altered under hypoxia, and c ...
DOI:
10.1104/pp.108.125989
PubMed:
19005089
PubMed Central:
PMC2613732

43. Effect of synthetic cyclopentane β,β'-triketones on amino acid metabolism in roots of buckwheat (Fagopyrum esculentum Moench.) seedlings

Author:
Demina, E. A.; Tishchenko, L. Ya.; Shestak, O. P.; Novikov, V. L.; Anisimov, M. M.
Source:
Applied biochemistry and microbiology 2009 v.45 no.1 pp. 87-92
ISSN:
0003-6838
Subject:
roots,   etc   ; Fagopyrum esculentum; alanine; amino acid metabolism; buckwheat; gamma-aminobutyric acid; germination; glutamine; proline; root growth; seedlings; seeds; stress tolerance;     Show all 13 Subjects
Abstract:
... Germination of buckwheat seeds in solutions of synthetic mono- and tricyclic cyclopentane β,β'-triketones of various concentrations was accompanied by inhibition of seedling root growth and changes in the contents of glutamate, γ-aminobutyric acid, proline, glutamine, and alanine. The monocyclic triketone also affected the amount of isoleucine. It is likely that the increase in proline content is ...
DOI:
10.1134/S0003683809010153

44. The Nematode Resistance Allele at the rhg1 Locus Alters the Proteome and Primary Metabolism of Soybean Roots

Author:
Afzal, Ahmed J.; Natarajan, Aparna; Saini, Navinder; Iqbal, M. Javed; Geisler, Matt; El Shemy, Hany A.; Mungur, Rajsree; Willmitzer, Lothar; Lightfoot, David A.
Source:
Plant physiology 2009 v.151 no.3 pp. 1264-1280
ISSN:
0032-0889
Subject:
roots,   etc   ; Glycine max; Heterodera glycines; alleles; amino acid metabolism; chronic diseases; gas chromatography; giant cells; glucose-6-phosphate isomerase; isogenic lines; loci; mass spectrometry; metabolites; protein degradation; proteins; proteome; soybeans; systemic acquired resistance; trypsin; two-dimensional gel electrophoresis;     Show all 20 Subjects
Abstract:
... Heterodera glycines, the soybean cyst nematode (SCN), causes the most damaging chronic disease of soybean (Glycine max). Host resistance requires the resistance allele at rhg1. Resistance destroys the giant cells created in the plant's roots by the nematodes about 24 to 48 h after commencement of feeding. In addition, 4 to 8 d later, a systemic acquired resistance develops that discourages later i ...
DOI:
10.1104/pp.109.138149
PubMed:
19429603
PubMed Central:
PMC2773059

45. Time course analysis of gene expression over 24 hours in Fe-deficient barley roots

Author:
Nagasaka, Seiji; Takahashi, Michiko; Nakanishi-Itai, Reiko; Bashir, Khurram; Nakanishi, Hiromi; Mori, Satoshi; Nishizawa, Naoko K.
Source:
Plant molecular biology 2009 v.69 no.5 pp. 621-631
ISSN:
0167-4412
Subject:
roots,   etc   ; Hordeum vulgare; amino acid metabolism; barley; biosynthesis; circadian rhythm; diurnal variation; enzymes; gene expression; gene expression regulation; genes; iron; messenger RNA; methionine; microarray technology; nutrient deficiencies; nutrient uptake; phytosiderophores; secretion; sulfates; sulfur; transporters;     Show all 22 Subjects
Abstract:
... Typical for a graminaceous plant, barley secretes mugineic acid-family phytosiderophores (MAs) to acquire iron (Fe). Under Fe-deficient conditions, MAs secretion from barley roots increases markedly. Secretion shows a diurnal pattern, with a clear peak 2-3 h after sunrise and cessation within a few hours. Microarray analyses were performed to profile the Fe deficiency-inducible genes in barley roo ...
DOI:
10.1007/s11103-008-9443-0
PubMed:
19089316

46. Cloning and characterization of a SnRK1-encoding gene from Malus hupehensis Rehd. and heterologous expression in tomato

Author:
Li, Guangjie; Peng, Futian; Zhang, Lin; Shi, Xingzheng; Wang, Zhaoyan
Source:
Molecular biology reports 2010 v.37 no.2 pp. 947-954
ISSN:
0301-4851
Subject:
roots,   etc   ; Malus hupehensis; amino acid metabolism; amino acids; carbohydrate metabolism; complementary DNA; genes; leaves; nucleotides; open reading frames; quantitative polymerase chain reaction; rapid amplification of cDNA ends; starch; stems; tomatoes;     Show all 15 Subjects
Abstract:
... Sucrose non-fermenting-1-related protein kinase-1 (SnRK1) plays an important role in metabolic regulation in plant. To understand the molecular mechanism of amino acids and carbohydrate metabolism in Malus hupehensis Rehd. var. pinyiensis Jiang (Pingyi Tiancha, PYTC), a full-length cDNA clone encoding homologue of SnRK1 was isolated from PYTC by Rapid Amplification of cDNA Ends (RACE). The clone, ...
DOI:
10.1007/s11033-009-9734-9
PubMed:
19680782

47. Complexity and coordination of root growth at low water potentials: recent advances from transcriptomic and proteomic analyses

Author:
YAMAGUCHI, MINEO; SHARP, ROBERT E.
Source:
Plant, cell and environment 2010 v.33 no.4 pp. 590-603
ISSN:
0140-7791
Subject:
roots,   etc   ; amino acid metabolism; cell walls; corn; flavonoids; phenolic compounds; proteomics; reactive oxygen species; root growth; soy protein; soybeans; transcriptomics; water stress;     Show all 13 Subjects
Abstract:
... Progress in understanding root growth regulation and adaptation under water-stressed conditions is reviewed, with emphasis on recent advances from transcriptomic and proteomic analyses of maize and soybean primary roots. In both systems, kinematic characterization of the spatial patterns of cell expansion within the root elongation zone showed that at low water potentials, elongation rates are pre ...
DOI:
10.1111/j.1365-3040.2009.02064.x
PubMed:
19895398

48. Identification of genes regulated by ammonium availability in the roots of maritime pine trees

Author:
Canales, Javier; Flores-Monterrosso, Arantxa; Rueda-López, Marina; Avila, Concepción; Cánovas, Francisco M.
Source:
Amino acids 2010 v.39 no.4 pp. 991-1001
ISSN:
0939-4451
Subject:
roots,   etc   ; Pinus pinaster; amino acid metabolism; asparagine; biosynthesis; conifers; databases; diet therapy; gene expression; gene expression regulation; microarray technology; nitrates; nitrogen; nutrition; proteins; suppression subtractive hybridization; unigenes;     Show all 17 Subjects
Abstract:
... Conifers have a preference for ammonium over nitrate as the main inorganic nitrogen source. However, it is unknown how changes in nitrogen nutrition may affect transcription profiles. In this study, microarray analysis and suppressive subtraction hybridization were used to identify differentially expressed genes in the roots of maritime pine exposed to changes in ammonium availability. A total of ...
DOI:
10.1007/s00726-010-0483-9
PubMed:
20140468

49. Physiological responses and comparative transcriptional profiling of maize roots and leaves under imposition and removal of aluminium toxicity

Author:
Li, You-Zhi; Lu, Hai-Feng; Fan, Xian-Wei; Sun, Chang-Bin; Qing, Dong-Jin; Dong, Hai-Tao; Wang, Liang
Source:
Environmental and experimental botany 2010 v.69 no.2 pp. 158-166
ISSN:
0098-8472
Subject:
roots,   etc   ; Zea mays; grain crops; phytotoxicity; metabolic detoxification; corn; transcription (genetics); biochemical pathways; water stress; metal tolerance; aluminum; inbred lines; type III secretion system; gene expression regulation; amino acid metabolism; leaves;     Show all 16 Subjects
Abstract:
... So far, the tolerance mechanisms of plant tolerance to aluminium (Al) toxicity are still controversial. This will require an interdisciplinary approaches integrating genetic, molecular, and physiological investigations. To lay a foundation for studying mechanism of whole maize plant tolerance to Al stress (AS) and growth recovery by removal of Al toxicity (RAT), temporal physiological responses an ...
DOI:
10.1016/j.envexpbot.2010.03.009

50. Alteration of mitochondrial protein complexes in relation to metabolic regulation under short-term oxidative stress in Arabidopsis seedlings

Author:
Toshihiro Obata; Annemarie Matthes; Susanne Koszior; Martin Lehmann; Wagner L. Araújo; Ralph Bock; Lee J. Sweetlove; Alisdair R. Fernie
Source:
Phytochemistry 2011 v.72 no.10 pp. 1081-1091
ISSN:
0031-9422
Subject:
roots,   etc   ; Arabidopsis; NADP (coenzyme); alanine transaminase; amino acid metabolism; carbon; enzyme activity; glyceraldehyde-3-phosphate dehydrogenase; glycolysis; malic enzyme; messenger RNA; monodehydroascorbate reductase (NADH); oxidative stress; proteins; seedlings; translation (genetics); tricarboxylic acids;     Show all 17 Subjects
Abstract:
... Plants reconfigure their metabolic network under stress conditions. Changes of mitochondrial metabolism such as tricarboxylic acid (TCA) cycle and amino acid metabolism are reported in Arabidopsis roots but the exact molecular basis underlying this remains unknown. We here hypothesise the reassembly of enzyme protein complexes to be a molecular mechanism for metabolic regulation and tried in the p ...
DOI:
10.1016/j.phytochem.2010.11.003
PubMed:
21146842