scholarly journals Induction of Crassulacean Acid Metabolism in Mesembryanthemum crystallinum by High Salinity: Mass Increase and de Novo Synthesis of PEP-Carboxylase

1987 ◽  
Vol 83 (4) ◽  
pp. 915-919 ◽  
Author(s):  
Roswitha Höfner ◽  
Luz Vazquez-Moreno ◽  
Klaus Winter ◽  
Hans J. Bohnert ◽  
Jürgen M. Schmitt
Keyword(s):  
Crassulacean Acid Metabolism ◽  
Acid Metabolism ◽  
High Salinity ◽  
De Novo ◽  
Mesembryanthemum Crystallinum ◽  
De Novo Synthesis ◽  
Pep Carboxylase ◽  
Mass Increase

Induction of Crassulacean Acid Metabolism in Mesembryanthemum: Mass Increase and De-Novo Synthesis of Pep Carboxylase

1987 ◽  
pp. 669-669
Author(s):  
J. M. Schmitt ◽  
R. Höfner ◽  
C. B. Michalowski ◽  
S. W. Olson ◽  
L. Vazquez-Moreno ◽  
...  
Keyword(s):  
Crassulacean Acid Metabolism ◽  
Acid Metabolism ◽  
De Novo ◽  
De Novo Synthesis ◽  
Pep Carboxylase ◽  
Mass Increase

Effect of Different CO2 Regimes on the Induction of Crassulacean Acid Metabolism in Mesembryanthemum crystallinum L

1979 ◽  
Vol 6 (6) ◽  
pp. 589 ◽  
Author(s):  
K Winter
Keyword(s):  
Water Stress ◽  
Phosphoenolpyruvate Carboxylase ◽  
Crassulacean Acid Metabolism ◽  
Acid Metabolism ◽  
High Salinity ◽  
Stomatal Closure ◽  
Initial Step ◽  
Mesembryanthemum Crystallinum ◽  
Initial Event ◽  
Response To Water

Induction of crassulacean acid metabolism (CAM) in Mesembryanthemum crystallinum in response to high salinity was studied in plants grown in different CO2 regimes to determine whether the induction of CAM could be controlled by CO2 supply in the light and dark; a possible consequence of stomatal closure in response to water stress. The activity of extractable phosphoenolpyruvate carboxylase (EC 4.1.1.31) and the nocturnal change in malate content were followed at frequent intervals after onset of the treatments. The results suggest that the initial event during the induction of CAM is a change in the biochemical apparatus, indicated by the activity of phosphoenolpyruvate carboxylase, which then leads to the day/night fluctuations of malate synthesis typical of CAM. This initial step is not controlled by the availability of CO2 in the light or dark.

scholarly journals Induction of PEP Carboxylase and Crassulacean Acid Metabolism by Gibberellic Acid in Mesembryanthemum crystallinum

2001 ◽  
Vol 42 (2) ◽  
pp. 236-239 ◽  
Author(s):  
Lonnie J. Guralnick ◽  
Maurice S. B. Ku ◽  
Gerald E. Edwards ◽  
Darren Strand ◽  
Brandon Hockema ◽  
...  
Keyword(s):  
Gibberellic Acid ◽  
Crassulacean Acid Metabolism ◽  
Acid Metabolism ◽  
Mesembryanthemum Crystallinum ◽  
Pep Carboxylase

scholarly journals Transcriptional profiles of organellar metabolite transporters during induction of crassulacean acid metabolism in Mesembryanthemum crystallinum

2005 ◽  
Vol 32 (5) ◽  
pp. 451 ◽  
Author(s):  
Shin Kore-eda ◽  
Chiyuki Noake ◽  
Masahisa Ohishi ◽  
Jun-ichi Ohnishi ◽  
John C. Cushman
Keyword(s):  
Crassulacean Acid Metabolism ◽  
Acid Metabolism ◽  
Expression Patterns ◽  
Transcript Abundance ◽  
Transport Processes ◽  
Mesembryanthemum Crystallinum ◽  
Water Deficit Stress ◽  
Diurnal Changes ◽  
Metabolite Transport ◽  
Leaf Tissues

Metabolite transport across multiple organellar compartments is essential for the operation of crassulacean acid metabolism (CAM). To investigate potential circadian regulation of inter-organellar metabolite transport processes, we have identified eight full-length cDNAs encoding an organellar triose phosphate / Pi translocator (McTPT1), a phosphoenolpyruvate / Pi translocator (McPPT1), two glucose-6-phosphate / Pi translocators (McGPT1, 2), two plastidic Pi translocator-like proteins (McPTL1, 2), two adenylate transporters (McANT1, 2), a dicarboxylate transporter (McDCT2), and a partial cDNA encoding a second dicarboxylate transporter (McDCT1) in the model CAM plant, Mesembryanthemum crystallinum L. We next investigated day / night changes in steady-state transcript abundance of each of these transporters in plants performing either C3 photosynthesis or CAM induced by salinity or water-deficit stress. We observed that the expression of both isogenes of the glucose-6-phosphate / Pi translocator (McGPT1, 2) was enhanced by CAM induction, with McGPT2 transcripts exhibiting much more pronounced diurnal changes in transcript abundance than McGPT1. Transcripts for McTPT1, McPPT1, and McDCT1 also exhibited more pronounced diurnal changes in abundance in the CAM mode relative to the C3 mode. McGPT2 and McDCT1 transcripts exhibited sustained oscillations for at least 3 d under constant light and temperature conditions suggesting their expression is under circadian clock control. McTPT1 and McGPT2 transcripts were preferentially expressed in leaf tissues in either C3 or CAM modes. The leaf-specific and / or circadian controlled gene expression patterns are consistent with McTPT1, McGPT2 and McDCT1 playing CAM-specific metabolite transport roles.

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