Light, chlorophyll, carboxylase activity and CO2 fixation at various depths in the chlorenchyma of <i>Opuntia ficus-indica</i> (L.) Miller under current and elevated CO2
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Diel Patterns of Water Potential Components for the Crassulacean Acid Metabolism Plant Opuntia ficus-indica when Well-Watered or Droughted.
Under well-watered conditions, chlorenchyma acidity in cladodes of Opuntia ficus-indica increased substantially at night, fully accounting for the 0.26-megapascal nocturnal increase in osmotic pressure in the outer 2 millimeters. Osmotic pressure in the inner part of the chlorenchyma and in the water-storage parenchyma did not change significantly over 24-hour periods. Three months of drought d...
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The rates and extents of hydrolysis of alpha(S)- and beta-caseins from bovine, caprine, and ovine sodium caseinates produced by an enzymatic extract of the fruit of Opuntia ficus-indica, (L.) Miller were evaluated and compared with those produced by a commercial animal rennet. A mechanistic model based on a pseudo-first-order enzymatic reaction, in the presence of first-order deactivation of th...
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Whole-cell CO2 fixation and ribulose 1,5-bisphosphate carboxylase/oxygenase (RubisCO) activity were determined in Rhodobacter sphaeroides wild-type and mutant strains. There is no obvious difference in the levels of whole-cell CO2 fixation for the wild type, a form I RubisCO deletion mutant, and a form II RubisCO deletion mutant. No ribulose 1,5-bisphosphate-dependent CO2 fixation was detected ...
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Identification and Differentiation between Hoodia gordonii (Masson) Sweet ex Decne., Opuntia ficus indica (L.) P. Miller, and Related Hoodia Species Using Microscopy and PCR Vaishali Joshi a; Natascha Techen a; Brian E. Scheffler b; Ikhlas A. Khan a a National Center for Natural Products, Research and Research Institute of Pharmaceutical Sciences Department of Pharmacognosy, School of Pharmacy,...
متن کاملConserved and divergent rhythms of crassulacean acid metabolism-related and core clock gene expression in the cactus Opuntia ficus-indica.
The cactus Opuntia ficus-indica is a constitutive Crassulacean acid metabolism (CAM) species. Current knowledge of CAM metabolism suggests that the enzyme phosphoenolpyruvate carboxylase kinase (PPCK) is circadian regulated at the transcriptional level, whereas phosphoenolpyruvate carboxylase (PEPC), malate dehydrogenase (MDH), NADP-malic enzyme (NADP-ME), and pyruvate phosphate dikinase (PPDK)...
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