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You searched for: Journal Plant physiology Remove constraint Journal: Plant physiology Publication Year 1997 Remove constraint Publication Year: 1997 Subject dose response Remove constraint Subject: dose response Subject transcription (genetics) Remove constraint Subject: transcription (genetics) Text Availability Citation in PubAg Remove constraint Text Availability: Citation in PubAg
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1. Cold acclimation and freezing tolerance. A complex interaction of light and temperature

Author:
Gary, G.R.; Chauvin, L.P.; Sarhan, F.; Huner, N.P.A.
Source:
Plant physiology 1997 v.114 no.2 pp. 467-474
ISSN:
0032-0889
Subject:
messenger RNA; dose response; redox reactions; net assimilation rate; light intensity; acclimation; Secale cereale; gene expression; transcription (genetics); frost resistance; photosynthesis; genes; temperature; plant morphology; chloroplasts
Abstract:
... By comparing growth under five different temperature and irradiance regimes (20 degrees C and 800, 250, and 50 micromoles m-2 s-1 and 5 degrees C and 250 and 50 micromoles m-2 s-1), we have examined the effects of light, temperature, and the relative reduction state of photosystem II on plant morphology, freezing tolerance (lethal temperature at which freezing injury occurs [LT50]), transcript lev ...

2. Regulation of the accumulation and reduction of nitrate by nitrogen and carbon metabolites in maize seedlings

Author:
Sivasankar, S.; Rothstein, S.; Oaks, A.
Source:
Plant physiology 1997 v.114 no.2 pp. 583-589
ISSN:
0032-0889
Subject:
Zea mays; seedlings; roots; shoots; nitrate reduction; nitrogen; carbon; metabolites; asparagine; glutamine; sucrose; dose response; nutrient uptake; nitrate reductase; enzyme activity; nitrite reductase; aspartate-ammonia ligase; genes; gene expression; transcription (genetics)
Abstract:
... The accumulation and reduction of nitrate in the presence of the nitrogen metabolites asparagine (Asn) and glutamine (Gln) and the carbon metabolite sucrose (Suc) were examined in maize (Zea mays L.) seedlings in an attempt to separate their effects on the nitrate uptake system and the nitrate reduction system. After 8 h of exposure to nitrate in the presence of 1 mM Asn, tissue nitrate accumulati ...

3. Regulation of the cinnamate 4-hydroxylase (CYP73A1) in Jerusalem artichoke tubers in response to wounding and chemical treatments

Author:
Batard, Y.; Schalk, M.; Pierrel, M.A.; Zimmerlin, A.; Durst, F.; Werck-Reichhart, D.
Source:
Plant physiology 1997 v.113 no.3 pp. 951-959
ISSN:
0032-0889
Subject:
protein synthesis; dose response; phytochrome; genetic code; oxygenases; stress response; phenobarbital; cinnamic acid; tubers; gene expression; transcription (genetics); genes; clofibrate; enzyme activity; chemical treatment; benzopyrenes; Helianthus tuberosus
Abstract:
... trans-Cinnamate 4-hydroxylase (C4H) is a plant-specific cytochrome (P450) that is encoded by the gene CYPZ3A and catalyzes the second step of the multibranched phenylpropanoid pathway. Increases in C4H activity in response to physical and chemical stresses have been well documented, but the mechanism of these increases has never been studied in detail. This paper reports on the regulatory mechanis ...