Anatomical adaptations to waterlogging in roots of wetland graminoids: limitations and drawbacks

摘要: Abstract Roots of wetland graminoids possess the following features which help them to survive long-term oxygen deficiency in waterlogged soils: (1) well developed aerenchyma; (2)_a barrier radial loss along most their length. In spite these adaptations, plants may suffer from deficiency, e.g. at sites with strongly reducing substrates. some species, adaptations do not fully develop under conditions anaerobiosis combined excessive nitrogen nutrition. A possible drawback associated anatomical is a reduced capacity for nutrient uptake. solution this problem be root dimorphism: “soil” roots, adapted anaerobic conditions, anchor plant substrate while “aquatic” roots ensure