热带亚热带植物学报2026，Vol.34Issue(2)：203-214,12.DOI:10.11926/jtsb.4993
海三棱藨草对盐、水胁迫的响应特征
Response Characteristics of Scirpus mariqueter to Salinity and Flooding Stress
摘要
Abstract
To explore the response characteristics of the Scirpus mariqueter population in the intertidal zone of Hangzhou Bay to salt and water stress,this study simulated the intertidal habitat and set up control,Ca2+(0.05,0.10,0.15 mol/kg),Na+(0.10,0.15,0.3 mol/kg)and waterlogging depth and duration(12 h/10 cm,18 h/20 cm,24 h/30 cm)stress treatments.The response characteristics of leaf cell membrane permeability,antioxidant enzyme activity,chlorophyll content and photosynthetic physiology were systematically analyzed.The results showed that with the increase of Ca2+concentration,the content of malondialdehyde(MDA)in leaves increased,and the relative conductivity,superoxide dismutase(SOD),peroxidase(POD)activitives and leaf chlorophyll content all showed a trend of first decreasing and then increasing;while with the increase of Na+concentration,they all gradually increased.The effects of Na+stress at moderate levels or below on leaf cell membrane permeability,antioxidant enzyme activity,leaf chlorophyll content and photosynthetic performance indicators were higher than those of the same concentration of Ca2+stress.Scirpus mariqueter has a high tolerance to Ca2+stress and a low tolerance to Na+stress.Under waterlogging stress,with the increase of waterlogging duration and depth,the relative conductivity of leaves,SOD and POD activity showed a trend of first decreasing and then increasing,while chlorophyll content and photosynthetic parameters showed a trend of first increasing and then decreasing.Among them,moderate waterlogging treatment could maintain the optimal photosynthetic performance and membrane system stability,while continuous deep waterlogging led to significant physiological decline.Therefore,Scirpus mariqueter shows strong adaptability under low-salt,poor and intermittent waterlogging conditions through dynamic regulation of antioxidant defense and photosynthetic energy allocation.This provides a theoretical basis for the recovery of S.mariqueter populations in the intertidal zone after the removal of S.alterniflora,especially in the management of salt stress,waterlogging duration and depth.关键词
海三棱藨草/盐分胁迫/水淹胁迫/生理生态Key words
Scirpus mariqueter/Salt stress/Water flooding stress/Physiology and ecology引用本文复制引用
王家源,吉小波,吕联江,朱念福,叶小齐,吴统贵,周方,方磊,原文文..海三棱藨草对盐、水胁迫的响应特征[J].热带亚热带植物学报,2026,34(2):203-214,12.基金项目
浙江省自然资源厅科技项目(2021-40) （2021-40）
国家重点研发计划项目(2023YFE0101700) （2023YFE0101700）
浙江省重点研发计划(2021C02038)资助 This work was supported by the Project for Science and Technology of Zhejiang Department of Natural Resources(Grant No.2021-40),the National Key Research and Development Program of China(Grant No.2023YFE0101700),and the Key Research and Development Program of Zhejiang(Grant No.2021C02038). （2021C02038）
