Search Results - "Havir, E.A"

Comparisons of soybean urease isolated from seed and tissue culture by Polacco, J C, Havir, E A

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Photorespiratory toxicity in autotrophic cell cultures of a mutant of Nicotiana sylvestris lacking serine: Glyoxylate aminotransferase activity by McHale, N.A. (Connecticut Agricultural Experiment Station, New Haven (USA). Dept. ofBiochemistry and Genetics), Havir, E.A, Zelitch, I

“…Procedures were devised for heterotrophic culture and autotrophic establishment of protoplast-derived cell cultures from the sat mutant of Nicotiana sylvestris…”
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Photosynthetic properties of an Arabidopsis thaliana mutant possessing a defective PsbS gene by Peterson, R.B., Havir, E.A.

“…We describe the properties of npq4-9, a new mutant of Arabidopsis thaliana (L.) Heynh. with reduced nonphotochemical quenching (NPQ) capacity that possesses a…”
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multiphasic nature of nonphotochemical quenching: implications for assessment of photosynthetic electron transport based on chlorophyll fluorescence by Peterson, R.B, Havir, E.A

“…Defining a quantitative relationship between chlorophyll a fluorescence yield and Photosystem II (PS II) function is important to photosynthesis research…”
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Manipulation of catalase levels produces altered photosynthesis in transgenic tobacco plants by Brisson, L.F, Zelitch, I, Havir, E.A

“…Constructs containing the cDNAs encoding the primary leaf catalase in Nicotiana or subunit 1 of cottonseed (Gossypium hirsutum) catalase were introduced in the…”
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Oxalate metabolism by tabacco leaf discs by Havir, E.A

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Regulation of catalase activity in leaves of Nicotiana sylvestris by high CO sub 2 by Havir, E.A., McHale, N.A.

“…The effect of high CO{sub 2} (1% CO{sub 2}/21% O{sub 2}) on the activity of specific forms of catalase (CAT-1, -2, and -3) in seedling leaves of tobacco…”
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The in vivo and in vitro inhibition of catalase from leaves of Nicotiana sylvestris by 3-amino-1,2,4-triazole by Havir, E.A. (Connecticut Agricultural Experiment Station, New Haven, CT)

“…Seedlings of tobacco (Nicotiana sylvestris) were treated in vivo with 0.03 to 20 millimolar 3-amino-1,2,4-triazole (aminotriazole). There was a rapid loss of…”
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Regulation of catalase activity in leaves of Nicotiana sylvestris by high CO2 by Havir, E.A, McHale, N.A

“…The effect of high CO2 (1% CO2/21% O2) on the activity of specific forms of catalase (CAT-1, -2, and -3) EA Havir, NA McHale [1987] Plant Physiol 84: 450-455)…”
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Enhanced-peroxidatic activity in specific catalase isozymes of tobacco, barley, and maize by Havir, E.A. (Connecticut Agricultural Experiment Station, New Haven, CT), McHale, N.A

“…Separation of catalase isozymes from leaf extracts of three diverse plant species (Nicotiana sylvestris, Zea mays, Hordeum vulgare L) revealed a distinct…”
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Purification and characterization of an isozyme of catalase with enhanced-peroxidatic activity from leaves of Nicotiana sylvestris by Havir, E A, McHale, N A

“…Two isozymes of catalase (EC 1.11.1.6), one with typically low peroxidatic activity (CAT-1) and the other with enhanced-peroxidatic activity (EP-CAT or CAT-3)…”
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mutant of Nicotiana sylvestris deficient in serine glyoxylate aminotransferase activity. Callus induction and photorespiratory toxicity in regenerated plants by McHale, N.A, Havir, E.A, Zelitch, I

“…A photorespiration mutant of Nicotiana sylvestris lacking serine: glyoxylate aminotransferase activity was isolated in the M2 generation following EMS…”
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Inactivation of serine:glyoxylate and glutamate:glyoxylate aminotransferases from tobacco leaves by glyoxylate in the presence of ammonium ion by Havir, E.A

“…Serine:glyoxylate and glutamate:glyoxylate aminotransferases (SGAT and GGAT), which catalyze the formation of glycine from glyoxylate during photorespiration,…”
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Modification of L-phenylalanine ammonia-lyase in soybean cell suspension cultures by 2-aminooxyacetate and L-2-aminooxy-3-phenylpropionate by Havir, E.A

“…Suspension-cultured cells of soybean (Glycine max (L.) Merr. cv. Kanrich) produce large amounts of phenylalanine ammonia-lyase (PAL; EC 4.3.1.5), the first…”
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Phenylalanine ammonia-lyase: purification and characterization from soybean cell suspension cultures by Havir, E A

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L-phenylalanine ammonia-lyase. IV. Evidence that the prosthetic group contains a dehydroalanyl residue and mechanism of action by Hanson, K R, Havir, E A

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Oxalate metabolism by tobacco leaf discs [Formation from glyoxylate, decarboxylation, photorespiratory carbon dioxide formation] by HAVIR, E. A

“…The turnover rate of oxalate in leaf discs of Nicotiana tabacum, var Havana Seed, during photosynthesis was estimated to be 1 to 2 micromoles per gram fresh…”
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L-Phenylalanine ammonia-lyase (maize, potato, and Rhodotorula glutinis) Explaining the kinetic effects of substrate modification by linear free-energy relationships by Hanson, K R, Havir, E A

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L-phenylalanine ammonia-lyase (maize), evidence for a common catalytic site for L-phenylalanine and L-tyrosine by Havir, E.A, Reid, P.D, Marsh, H.V

“…L-Phenylalanine ammonia-lyase (E. C. 4.3.1.5) from maize is active with L-tyrosine and L-phenylalanine and exhibits atypical Michaelis-Menten kinetics with…”
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L-phenylalanine ammonia-lyase (mazie); partial purification and response to gibberellic acid and cycloheximide of L-phenylalanine and L-tyrosine ammonia-lyase activities by Reid, P.D, Havir, E.A, Marsh, H.V

“…Extracts of maize leaf sheath tissue deaminate both L-phenylalanine and L-tyrosine. The activities with both substrates are enhanced by treating the plant with…”
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