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Seedling adaptive characteristics of Phragmites australis to nutrient heterogeneity under salt stress using a split-root approach

文献类型：期刊论文

作者Guan, Bo4; Gao, Nan3,4; Chen, Min2; Cagle, Grace A.1; Hou, Aixin1; Han, Guangxuan4; Tian, Xiaoyan3
刊名AQUATIC SCIENCES
出版日期2021-07-01
卷号83期号:3页码:11
关键词Phragmites australis Heterogeneity Biomass Saline wetland Total nitrogen
ISSN号1015-1621
DOI10.1007/s00027-021-00811-w
通讯作者Guan, Bo(bguan@yic.ac.cn) ; Han, Guangxuan(gxhan@yic.ac.cn)
英文摘要Coastal wetlands are highly heterogeneous due to their location between land and ocean. Clonal plants living in coastal wetlands can adapt to nutrient and salinity heterogeneity through clonal integration. However, little is known about how the single clonal ramet with fine roots adapts to nutrient heterogeneity within the microhabitat. Pot control experiments with 12 treatments were conducted to evaluate adaptive characteristics of Phragmites australis seedling to nutrient heterogeneity under salt stress. The results showed that under homogeneous nutrient treatment, 1.5% salt significantly reduced plant height and tiller number in P. australis and depressed the effect of nutrients on the leaf length, width and internode length. The homogeneous nutrient gradients had no significant effect on the aboveground biomass of P. australis in 1.5% salt condition. However, under 1.5% salt treatment, heterogeneous nutrient significantly reduced the underground biomass, including rhizome and adventitious root biomass. The root-shoot ratio was higher under homogeneous nutrient treatment than heterogeneous treatment with the same total nutrient amount applied. However, the accumulation of total nitrogen and total phosphorous in the stems and leaves of P. australis did not show significant differences, except that without salt stress, heterogeneous treatment decreased the total nitrogen content of stems and leaves at low nutrient levels. The results demonstrated a preference for homogeneous nutrient conditions in saline micro-environments in P. australis; however, when encountering heterogeneous soil nutrient environments, plants can maintain their nutrient requirements and even promote growth through physiological plasticity.
WOS关键词PHENOTYPIC PLASTICITY ; SOIL HETEROGENEITY ; GROWTH ; PLANT ; SALINITY ; COMPETITION ; WETLAND ; AVAILABILITY ; ENVIRONMENTS ; INTEGRATION
资助项目National Natural Science Foundation of China[41871091] ; National Natural Science Foundation of China[U1806218] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23050202] ; Yellow River Delta Ecology Research Station of Coastal Wetland, Chinese Academy of Sciences
WOS研究方向Environmental Sciences & Ecology ; Marine & Freshwater Biology
语种英语
WOS记录号WOS:000691268500001
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Yellow River Delta Ecology Research Station of Coastal Wetland, Chinese Academy of Sciences
源URL[http://ir.yic.ac.cn/handle/133337/29715]  
专题烟台海岸带研究所_近岸生态与环境实验室
烟台海岸带研究所_滨海湿地实验室
烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
通讯作者Guan, Bo; Han, Guangxuan
作者单位1.Louisiana State Univ, Coll Coast & Environm, Dept Environm Sci, Baton Rouge, LA 70803 USA
2.Hohai Univ, Coll Environm, Key Lab Integrated Regulat & Resource Dev Shallow, Minist Educ, Nanjing 210098, Peoples R China
3.Jilin Jianzhu Univ, Sch Municipal & Environm Engn, Changchun 130118, Peoples R China
4.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Key Lab Coastal Environm Proc,YICCAS, Yantai 264003, Peoples R China
推荐引用方式
GB/T 7714		 Guan, Bo,Gao, Nan,Chen, Min,et al. Seedling adaptive characteristics of Phragmites australis to nutrient heterogeneity under salt stress using a split-root approach[J]. AQUATIC SCIENCES,2021,83(3):11.
APA Guan, Bo.,Gao, Nan.,Chen, Min.,Cagle, Grace A..,Hou, Aixin.,...&Tian, Xiaoyan.(2021).Seedling adaptive characteristics of Phragmites australis to nutrient heterogeneity under salt stress using a split-root approach.AQUATIC SCIENCES,83(3),11.
MLA Guan, Bo,et al."Seedling adaptive characteristics of Phragmites australis to nutrient heterogeneity under salt stress using a split-root approach".AQUATIC SCIENCES 83.3(2021):11.

入库方式： OAI收割

来源：烟台海岸带研究所

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