植物研究2025，Vol.45Issue(5)：675-685,11.DOI:10.7525/j.issn.1673-5102.2025.05.003
睡莲科植物叶与陆生草本植物叶供耗水特征差异
Distinct Water Supply and Consumption Characteristics in Leaves between Nymphaeaceae and Terrestrial Herbs
摘要
Abstract
In terrestrial angiosperms,the balance between water supply and consumption is primarily regulated through the coordination of leaf veins and stomata,with epidermal cells playing a significant role in this process.However,research on Nymphaeaceae species remains very limited.In this study,seven species of Nymphaeaceae and six species of terrestrial herbaceous plants were selected as materials.Through quantitative analysis of floral and leaf anatomical traits,the intraspecific variation within Nymphaeaceae and the differences in floral and leaf characteristics between the two plant groups were examined.The results indicated that flowers of Nymphaeaceae plants exhibited larger stomatal size,epidermal cells size,and a higher vein density than leaves,whereas leaves displayed greater stomatal density,epidermal cell density,and stomatal index.The anatomical traits of Nymphaeaceae flowers were similar to those of terrestrial herbaceous flowers,except for epidermal cell size.However,the epidermal cell density and stomatal density of leaves were significantly higher than those of terrestrial herbs,while stomatal size,epidermal cell size,vein density and stomatal index were notably lower than those of the terrestrial herbs.The stomatal density of Nymphaeaceae flowers had no correlation with either epidermal cell size or floral vein density;in leaves,epidermal cell size had a negative correlation with stomatal density,and no significant association was found between stomatal density and leaf vein density.Principal component analysis revealed that,compared to terrestrial herbaceous plants,Nymphaeaceae flowers had an advantage in epidermal cell density;meanwhile,leaf trait spaces were completely separated,with Nymphaeaceae leaves exhibiting higher epidermal cell density and stomatal density.In conclusion,the flowers of Nymphaeaceae exhibited the traits similar with terrestrial herbs,likely due to their water-retaining characteristics,while the decoupling of stomata and veins in leaves reflected adaptive evolution in the aquatic environment.These findings provided the valuable foundation for further research on water-use characteristics and environmental adaptation mechanisms in aquatic plants.关键词
睡莲科/陆生草本/供耗水/气孔/表皮细胞/脉Key words
Nymphaeaceae/terrestrial herbs/water relations/stomata/epidermal cell/veins分类
农业科技引用本文复制引用
胡昕怡,许黎明,覃伯韬,安倚东,蒋国凤..睡莲科植物叶与陆生草本植物叶供耗水特征差异[J].植物研究,2025,45(5):675-685,11.基金项目
国家自然科学基金地区项目(32460373) （32460373）
广西自然科学基金重点项目(2022GXNSFDA035059) （2022GXNSFDA035059）
亚热带农业生物资源保护与利用国家实验室开放课题基金项目(SKLCUSA-b201903) （SKLCUSA-b201903）
广西巴马县科技人才计划项目(巴人科20220011). （巴人科20220011）
