| 
                                    
                                        gptkbp:instanceOf
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:photosynthetic_pathway
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:adaptation
                                    
                                 | 
                                
                                    
                                        
                                            
                                            high temperature
                                        
                                        
                                         
                                    
                                        
                                            
                                            high light intensity
                                        
                                        
                                         
                                    
                                        
                                            
                                            low atmospheric CO2
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:alsoKnownAs
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:C4_carbon_fixation
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:CalvinCycleOccursIn
                                    
                                 | 
                                
                                    
                                        
                                            
                                            bundle sheath cells
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:carbonFixationOccursIn
                                    
                                 | 
                                
                                    
                                        
                                            
                                            mesophyll cells
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:CO2ConcentrationMechanism
                                    
                                 | 
                                
                                    
                                        
                                            
                                            yes
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:CO2FirstFixedInto
                                    
                                 | 
                                
                                    
                                        
                                            
                                            four-carbon compound
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:commonIn
                                    
                                 | 
                                
                                    
                                        
                                            
                                            aquatic plants
                                        
                                        
                                         
                                    
                                        
                                            
                                            trees
                                        
                                        
                                         
                                    
                                        
                                            
                                            cool climates
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:contrastsWith
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:CAM_photosynthesis
                                        
                                         
                                    
                                        
                                            gptkb:C3_photosynthesis
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:energyEfficiency
                                    
                                 | 
                                
                                    
                                        
                                            
                                            higher than C3 photosynthesis
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:evolvedIndependently
                                    
                                 | 
                                
                                    
                                        
                                            
                                            over 60 times
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:firstDescribed
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Marshall_Hatch
                                        
                                         
                                    
                                        
                                            gptkb:Roger_Slack
                                        
                                         
                                    
                                        
                                            
                                            1966
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:foundIn
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:maize
                                        
                                         
                                    
                                        
                                            gptkb:marina
                                        
                                         
                                    
                                        
                                            
                                            sugarcane
                                        
                                        
                                         
                                    
                                        
                                            
                                            sorghum
                                        
                                        
                                         
                                    
                                        
                                            
                                            amaranth
                                        
                                        
                                         
                                    
                                        
                                            
                                            crabgrass
                                        
                                        
                                         
                                    
                                        
                                            
                                            many tropical grasses
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:increasesNitrogenUseEfficiency
                                    
                                 | 
                                
                                    
                                        
                                            
                                            true
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:increasesProductivityIn
                                    
                                 | 
                                
                                    
                                        
                                            
                                            arid environments
                                        
                                        
                                         
                                    
                                        
                                            
                                            hot climates
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:increasesWaterUseEfficiency
                                    
                                 | 
                                
                                    
                                        
                                            
                                            true
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:mainEnzyme
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Rubisco
                                        
                                         
                                    
                                        
                                            gptkb:PEP_carboxylase
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:mainlyIn
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:angiosperms
                                        
                                         
                                    
                                        
                                            
                                            Poaceae family
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:minimizesOxygenaseActivityOf
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Rubisco
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:numberOfSpecies
                                    
                                 | 
                                
                                    
                                        
                                            
                                            about 8,100
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:percentageOfAllPlantSpecies
                                    
                                 | 
                                
                                    
                                        
                                            
                                            about 3%
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:product
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:oxaloacetate
                                        
                                         
                                    
                                        
                                            gptkb:aspartate
                                        
                                         
                                    
                                        
                                            gptkb:malate
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:reducesPhotorespiration
                                    
                                 | 
                                
                                    
                                        
                                            
                                            true
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:requiresSpecialLeafAnatomy
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Kranz_anatomy
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:bfsParent
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:CAM_photosynthesis
                                        
                                         
                                    
                                        
                                            gptkb:CAM_(Crassulacean_Acid_Metabolism)
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:bfsLayer
                                    
                                 | 
                                
                                    
                                        
                                            
                                            8
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        https://www.w3.org/2000/01/rdf-schema#label
                                    
                                 | 
                                
                                    
                                        
                                            
                                            C4 photosynthesis
                                        
                                        
                                         
                                    
                                 |