Effect of elevated CO 2 on growth and crassulacean-acid-metabolism activity of Kalanchoë pinnata under tropical conditions

Planta ◽  
1997 ◽  
Vol 201 (4) ◽  
pp. 389-396 ◽  
Author(s):  
Klaus Winter ◽  
Andreas Richter ◽  
Bettina Engelbrecht ◽  
Juan Posada ◽  
Aurelio Virgo ◽  
...  
Keyword(s):  
Crassulacean Acid Metabolism ◽  
Acid Metabolism ◽  
Tropical Conditions ◽  
Kalanchoe Pinnata

scholarly journals CRASSULACEAN ACID METABOLISM UNDER NATURAL TROPICAL CONDITIONS

1968 ◽  
Vol 67 (4) ◽  
pp. 883-897 ◽  
Author(s):  
T. R. MILBURN ◽  
D. J. PEARSON ◽  
N. A. NDEGWE
Keyword(s):  
Crassulacean Acid Metabolism ◽  
Acid Metabolism ◽  
Tropical Conditions

Research note: Large gene family of phosphoenolpyruvate carboxylase in the crassulacean acid metabolism plant Kalanchoe pinnata (Crassulaceae) characterised by partial cDNA sequence analysis

2005 ◽  
Vol 32 (5) ◽  
pp. 467 ◽  
Author(s):  
Hans H. Gehrig ◽  
Joshua A. Wood ◽  
Mary Ann Cushman ◽  
Aurelio Virgo ◽  
John C. Cushman ◽  
...  
Keyword(s):  
Gene Family ◽  
Phosphoenolpyruvate Carboxylase ◽  
Crassulacean Acid Metabolism ◽  
Cdna Sequence ◽  
Acid Metabolism ◽  
Sequence Similarity ◽  
Vascular Plant ◽  
Polymorphism Analysis ◽  
Kalanchoe Pinnata ◽  
Cam Plant

Clones coding for a 1100-bp cDNA sequence of phosphoenolpyruvate carboxylase (PEPC) of the constitutive crassulacean acid metabolism (CAM) plant Kalanchoe pinnata (Lam.) Pers., were isolated by reverse transcription-polymerase chain reaction (RT–PCR) and characterised by restriction fragment length polymorphism analysis and DNA sequencing. Seven distinct PEPC isogenes were recovered, four in leaves and three in roots (EMBL accession numbers: AJ344052–AJ344058). Sequence similarity comparisons and distance neighbour-joining calculations separate the seven PEPC isoforms into two clades, one of which contains the three PEPCs found in roots. The second clade contains the four isoforms found in leaves and is divided into two branches, one of which contains two PEPCs most similar with described previously CAM isoforms. Of these two isoforms, however, only one exhibited abundant expression in CAM-performing leaves, but not in very young leaves, which do not exhibit CAM, suggesting this isoform encodes a CAM-specific PEPC. Protein sequence calculations suggest that all isogenes are likely derived from a common ancestor gene, presumably by serial gene duplication events. To our knowledge, this is the most comprehensive identification of a PEPC gene family from a CAM plant, and the greatest number of PEPC isogenes reported for any vascular plant to date.

Carbon isotope composition and water-use efficiency in plants with crassulacean acid metabolism

2005 ◽  
Vol 32 (5) ◽  
pp. 381 ◽  
Author(s):  
Klaus Winter ◽  
Jorge Aranda ◽  
Joseph A. M. Holtum
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Crassulacean Acid Metabolism ◽  
Acid Metabolism ◽  
Aloe Vera ◽  
Dry Mass ◽  
Tropical Conditions ◽  
Δ13c Value ◽  
Use Efficiency ◽  
Cam Species

The relationship between water-use efficiency, measured as the transpiration ratio (g H2O transpired g–1 above- plus below-ground dry mass accumulated), and 13C / 12C ratio (expressed as δ13C value) of bulk biomass carbon was compared in 15 plant species growing under tropical conditions at two field sites in the Republic of Panama. The species included five constitutive crassulacean acid metabolism (CAM) species [Aloe vera (L.) Webb & Berth., Ananas comosus (L.) Merr., Euphorbia tirucalli L., Kalanchoë daigremontiana Hamet et Perr., Kalanchoë pinnata (Lam.) Pers.], two species of tropical C3 trees (Tectona grandis Linn. f. and Swietenia macrophylla King), one C4 species (Zea mays L.), and seven arborescent species of the neotropical genus Clusia, of which two exhibited pronounced CAM. The transpiration ratios of the C3 and CAM species, which ranged between 496 g H2O g–1 dry mass in the C3–CAM species Clusia pratensis Seeman to 54 g H2O g–1 dry mass in the constitutive CAM species Aloe vera, correlated strongly with δ13C values and nocturnal CO2 gain suggesting that δ13C value can be used to estimate both water-use efficiency and the proportion of CO2 gained by CAM species during the light and the dark integrated over the lifetime of the tissues.

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