Differences in root aeration, iron plaque formation and waterlogging tolerance in six mangroves along a continues tidal gradient

Mangrove is a special coastal forest along tropical and subtropical intertidal shores. However, how mangroves adapt to tidal flooding and the mechanisms involved in mangrove zonation are still poorly understood. In this study, a pot trial with different tide treatments was conducted to investigate t...

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Veröffentlicht in:Ecotoxicology (London, England). - 1992. - 24(2015), 7-8 vom: 09. Okt., Seite 1659-67
1. Verfasser: Cheng, Hao (VerfasserIn)
Weitere Verfasser: Wang, You-Shao, Fei, Jiao, Jiang, Zhao-Yu, Ye, Zhi-Hong
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2015
Zugriff auf das übergeordnete Werk:Ecotoxicology (London, England)
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Iron plaque Mangrove Root aeration Waterlogging Water 059QF0KO0R Iron E1UOL152H7 mehr... Oxygen S88TT14065
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520 |a Mangrove is a special coastal forest along tropical and subtropical intertidal shores. However, how mangroves adapt to tidal flooding and the mechanisms involved in mangrove zonation are still poorly understood. In this study, a pot trial with different tide treatments was conducted to investigate the differences in root anatomy, porosity, radial oxygen loss, iron plaque formation and waterlogging tolerance among six mangroves along a continuous tidal gradient. The index of waterlogging tolerance illustrated that Sonneratia apetala possessed the highest index, followed by Aeguceras corniculatum/Kandelia, Rhizophora stylosa, Heritiera littorlis and Thespesia populnea. Waterlogging tolerances of the mangroves were found to be positively correlated with their root porosity, radial oxygen loss and iron plaque formation. Waterlogging-sensitive species such as landward semi-mangroves exhibited small root porosity and ROL, while waterlogging-tolerant species such as seaward pioneer and rhizophoraceous mangroves exhibited extensive porosity, ROL and iron plaque formation. Nevertheless, grater root porosity and iron plaque formation were detected in permanent waterlogged plants when compared to drained plants. In conclusion, The present study proposes a structural adaptive strategy to tidal flooding in mangroves, such that the mangroves with higher root porosity, ROL and iron plaque appeared to exhibit higher waterlogging tolerance and adaptability in anaerobic foreshores 
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650 4 |a Research Support, Non-U.S. Gov't 
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650 4 |a Mangrove 
650 4 |a Root aeration 
650 4 |a Waterlogging 
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650 7 |a 059QF0KO0R  |2 NLM 
650 7 |a Iron  |2 NLM 
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650 7 |a Oxygen  |2 NLM 
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700 1 |a Wang, You-Shao  |e verfasserin  |4 aut 
700 1 |a Fei, Jiao  |e verfasserin  |4 aut 
700 1 |a Jiang, Zhao-Yu  |e verfasserin  |4 aut 
700 1 |a Ye, Zhi-Hong  |e verfasserin  |4 aut 
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