Effect of Waterlogging Stress on Leaf Anatomical Structure and Ultrastructure of Phoebe sheareri Seedlings

Phoebe sheareri is an excellent roadside tree with a wide distribution range and high ornamental value. Excessive moisture can affect the external morphology, microstructure, ultrastructure of leaf. Little known at present regarding leaf structure P. under waterlogging stress. In this paper, morphology leaves, microstructure epidermis, mesophyll cells seedlings stress drainage were dynamically observed. Waterlogging contributed to yellowing wilting seedling gradual closing epidermal stomata, increasing density loosening arrangement cell structure, merging palisade tissue cells. forced chloroplast membranes blur, gradually causing swelling, deformation, plasmolysis occurring in severe cases. During waterlogging, basal lamellae disorganized, mitochondrial membrane was damaged. The damaged state leaves not relieved after drainage. only inhibited growth but also accelerated closure disordered spongy gradually, internal organelles