Nutrient and genotypic effects on CO2-responsiveness: photosynthetic regulation in Leucadendron species of a nutrient-poor environment

absorption de substances nutritives atmosfera atmosphere azote carbohidratos carbohydrates carbon dioxide dioxyde de carbone feuille fosforo glucide hojas leaves nitrogen nutrient uptake nutrientes nutrients phosphore phosphorus photosynthese photosynthesis proteaceae ribulose-bisphosphate carboxylase rubisco substance nutritive