海洋科学2025，Vol.49Issue(5)：56-68,13.DOI:10.11759/hykx20250326001
蜈蚣藻多糖诱导耐盐碱菌对苏打盐碱土修复作用及黄瓜生长的影响
Effects of saline-tolerant bacteria induced by Grateloupia fil-icina polysaccharides on the remediation of soda saline-alkali soil and cucumber growth
摘要
Abstract
This study investigated the effect of salinity-tolerant bacteria induced by polysaccharides derived from the seaweed Grateloupia filicina on the rehabilitation of soda saline soil and its effect on plant growth through pol-ysaccharide-bacteria or polysaccharide-bacteria-plant interactions.The salinity-tolerant bacteria reduced the pH of the saline soil.The addition of polysaccharides alone increased the inorganic phosphorus content of the soil;a combination of the bacteria and the polysaccharide solution(PB)markedly enhanced the available nitrogen and organic matter content.Thus,we further examined the remediation efficiency of the polysaccharide-bacteria-plant combination.G.filicina polysaccharides induced the proliferation of saline-tolerant bacteria,which significantly promoted the growth of cucumber plants during the remediation of soda saline soil,mainly in terms of stem,leaf,and root biomass.The PB-treated group had the lowest levels of soil organic matter and inorganic phosphorus,which was consistent with the best growth status of cucumber plants.Microbial diversity analysis revealed that PB treatment increased soil microbial enzyme activities and induced the proliferation of beneficial bacteria,such as Mesobacillus,Fictibacillus arsenicus,Ensifer adhaerens,and Lysobacter.This study proposes a novel method for the remediation of soda saline-alkali soils.关键词
海藻多糖/耐盐碱菌/pH/苏打盐碱土/修复/植物Key words
algal polysaccharide/saline-tolerant bacteria/pH/soda saline-alkali soil/remediation/plant分类
海洋科学引用本文复制引用
刘娟,陈晓琳,战将,刘松,王雪芹..蜈蚣藻多糖诱导耐盐碱菌对苏打盐碱土修复作用及黄瓜生长的影响[J].海洋科学,2025,49(5):56-68,13.基金项目
山东省自然科学基金(ZR2023MD095)[Shandong Provincial Natural Science Foundation,No.ZR2023MD095] （ZR2023MD095）
