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盘远方,江美慧,邱思婷,苏治南,邱广龙,陈思婷,范航清.全日潮淹水-盐度交互处理对5种红树林幼苗抗氧化酶活性的影响[J].广西科学,2025,32(2):294-304. [点击复制]
- PAN Yuanfang,JIANG Meihui,QIU Siting,SU Zhinan,QIU Guanglong,CHEN Siting,FAN Hangqing.Effects of Diurnal Tidal Submergence-Salinity Interaction Treatments on the Antioxidant Enzyme Activities in Seedlings of Five Mangrove Species[J].Guangxi Sciences,2025,32(2):294-304. [点击复制]
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| 全日潮淹水-盐度交互处理对5种红树林幼苗抗氧化酶活性的影响 |
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盘远方, 江美慧, 邱思婷, 苏治南, 邱广龙, 陈思婷, 范航清
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| (广西科学院, 广西海洋科学院（广西红树林研究中心）, 广西红树林保护与利用重点实验室, 广西 北海 536000) |
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| 摘要: |
| 为探究红树林幼苗对全日潮淹水-盐度交互处理的适应机制，本研究通过在室内模拟北部湾全日潮潮汐规律，测定不同淹水-盐度交互处理条件下蜡烛果(Aegiceras corniculatum)、海榄雌(Avicennia marina)、木榄(Bruguiera gymnorhiza)、秋茄(Kandelia obovata)和红海兰(Rhizophora stylosa) 5种红树林幼苗的过氧化氢酶(CAT)活性、超氧化物歧化酶(SOD)活性和过氧化物酶(POD)活性，并对其变化特征进行分析。结果表明：(1)当淹水时间不变时，随着盐度的增加，蜡烛果的CAT活性呈上升趋势、SOD活性呈下降趋势；除淹水时间为4 h外，海榄雌的POD活性呈上升趋势。(2)当盐度不变时，随着淹水时间的增加，蜡烛果的CAT活性和海榄雌的POD活性总体呈下降趋势；除盐度为5外，蜡烛果的SOD活性呈上升趋势，海榄雌的CAT活性呈先下降后上升的趋势。(3)不同淹水-盐度交互处理下，蜡烛果的CAT、SOD、POD活性随着时间的推移总体呈先上升后下降的趋势；海榄雌、木榄、秋茄和红海兰的CAT活性总体均呈下降趋势，SOD活性总体均呈先上升后下降的趋势；海榄雌的POD活性呈先上升后下降再上升的趋势，而木榄、秋茄和红海兰的POD活性变化不大。(4)淹水-盐度交互处理对海榄雌的POD活性以及对蜡烛果的CAT活性和SOD活性影响较大，而对木榄、秋茄和红海兰影响较小。不同树种对淹水-盐度交互处理的生理响应不同，在红树林实际造林时应根据各红树林树种对盐度和潮位高低的生理适应特征来选择合适的树种。 |
| 关键词: 红树林幼苗 淹水-盐度 抗氧化酶系统 全日潮 |
| DOI：10.13656/j.cnki.gxkx.20250624.010 |
| 投稿时间：2023-10-12修订日期：2023-12-04 |
| 基金项目:国家自然科学基金项目(32170399);国家重点研发计划项目(2017FY100704);G228丹东至东兴广西滨海公路大风江大桥红树林恢复项目(2021G228-0953)和广西壮族自治区直属公益性科研院所基本科研业务费项目(2022GMRC-01)资助。 |
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| Effects of Diurnal Tidal Submergence-Salinity Interaction Treatments on the Antioxidant Enzyme Activities in Seedlings of Five Mangrove Species |
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PAN Yuanfang, JIANG Meihui, QIU Siting, SU Zhinan, QIU Guanglong, CHEN Siting, FAN Hangqing
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| (Guangxi Key Laboratory of Mangrove Conservation and Utilization, Guangxi Academy of Marine Sciences (Guangxi Mangrove Research Center), Guangxi Academy of Sciences, Beihai, Guangxi, 536000, China) |
| Abstract: |
| To investigate the adaptive mechanism of mangrove seedlings to the diurnal tidal submergence-salinity interaction treatments,this study simulated diurnal tidal rhythm in Beibu Gulf indoors,measured the activities of catalase (CAT),superoxide dismutase (SOD),and peroxidase (POD) in five mangrove species: Aegiceras corniculatum,Avicennia marina,Bruguiera gymnorhiza,Kandelia obovata,and Rhizophora stylosa under various submergence-salinity interaction treatments,and analyzed the changing characteristics.The results are summarized as follows.(1) Under constant submergence duration,as the salinity increased,the CAT activity of Aegiceras corniculatum generally increased,and the SOD activity of Aegiceras corniculatum decreased.Except the submergence for 4 h,the POD activity of Avicennia marina showed an upward trend.(2) When salinity was held constant,as submergence duration increased,the CAT activity of Aegiceras corniculatum and the POD activity of Avicennia marina generally declined.Except the case of salinity being 5,the SOD activity of Aegiceras corniculatum exhibited an increasing trend and the CAT activity of Avicennia marina presented a trend of first declining and then rising.(3) Under different submergence-salinity interactions,the CAT,SOD,and POD activities of Aegiceras corniculatum showed a trend of first increasing and then decreasing over time;the CAT activity of Avicennia marina,B.gymnorhiza,K.obovata,and R.stylosa consistently decreased,and the SOD activity of the four species generally followed a trend of first increasing and then decreasing;the POD activity of Avicennia marina showed an increasing-decreasing-increasing trend.The submergence-salinity interaction had little effect on the POD activity of B.gymnorhiza,K.obovata,and R.stylosa.(4) The submergence-salinity interaction had notable effects on the POD activity of Avicennia marina and the CAT and SOD activities of Aegiceras corniculatum,while its effects on B.gymnorhiza,K.obovata,and R.stylosa were minimal.The physiological responses of different species to submergence-salinity interactions varied,indicating that appropriate species should be selected for mangrove afforestation according to the physiological adaptation traits of each species to salinity and tidal height. |
| Key words: mangrove seedlings submergence-salinity antioxidant enzyme system diurnal tide |
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