Salt tolerance and exclusion in the mangrove plant Avicennia marina in relation to root apoplastic barriers

Salt tolerance and the possible functions of suberization on salt exclusion and secretion were examined in a dominant mangrove plant, Avicennia marina. The results showed that low salinities (10‰ and 20‰) almost has no negative effect on A. marina, however significant growth inhibitions were observe...

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Veröffentlicht in:Ecotoxicology (London, England). - 1992. - 29(2020), 6 vom: 14. Aug., Seite 676-683
1. Verfasser: Cheng, Hao (VerfasserIn)
Weitere Verfasser: Inyang, Anifiok, Li, Chang-Da, Fei, Jiao, Zhou, Yan-Wu, Wang, You-Shao
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:Ecotoxicology (London, England)
Schlagworte:Journal Article Exodermis and endodermis Mangrove plants Slat exclusion Suberization Ions Sodium 9NEZ333N27
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520 |a Salt tolerance and the possible functions of suberization on salt exclusion and secretion were examined in a dominant mangrove plant, Avicennia marina. The results showed that low salinities (10‰ and 20‰) almost has no negative effect on A. marina, however significant growth inhibitions were observed in the seedlings grown in higher salinities (30‰ and 40‰). With the increases of salinity, increased tissue Na+ content and enhanced salt secretion by glands were observed. Obvious suberization thickening were detected both in the exodermis and endodermis of the roots after salt pretreatment when compared to the roots without salt treatment. More importantly, the present data further confirmed that these root apoplastic barriers would directly decrease Na+ loading into xylem. Higher salt tolerance was observed in the seedlings pre-cultivated by salty tide when compared to fresh water cultivated A. marina. In summary, this study suggests a barrier property of suberization in dealing with salt exclusion in mangroves, a moderate salt pre-treatment may benefit plant withstanding high salinity 
650 4 |a Journal Article 
650 4 |a Exodermis and endodermis 
650 4 |a Mangrove plants 
650 4 |a Slat exclusion 
650 4 |a Suberization 
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650 7 |a Sodium  |2 NLM 
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700 1 |a Inyang, Anifiok  |e verfasserin  |4 aut 
700 1 |a Li, Chang-Da  |e verfasserin  |4 aut 
700 1 |a Fei, Jiao  |e verfasserin  |4 aut 
700 1 |a Zhou, Yan-Wu  |e verfasserin  |4 aut 
700 1 |a Wang, You-Shao  |e verfasserin  |4 aut 
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