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Salt tolerance and exclusion in the mangrove plant Avicennia marina in relation to root apoplastic barriers
Cheng, Hao; Inyang, Anifiok; Li, Chang-Da; Fei, Jiao; Zhou, Yan-Wu; Wang, You-Shao
2020
Source PublicationECOTOXICOLOGY
ISSN0963-9292
Volume29Issue:6Pages:676
AbstractSalt 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 parts per thousand and 20 parts per thousand) almost has no negative effect on A. marina, however significant growth inhibitions were observed in the seedlings grown in higher salinities (30 parts per thousand and 40 parts per thousand). 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.
DepartmentLTO
KeywordMangrove plants Slat exclusion Suberization Exodermis and endodermis
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/18327
Collection热带海洋环境国家重点实验室(LTO)
Affiliation1.[Cheng, Hao
2.Inyang, Anifiok
3.Fei, Jiao
4.Zhou, Yan-Wu
5.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Peoples R China
6.[Cheng, Hao
7.Fei, Jiao
8.Chinese Acad Sci, Daya Bay Marine Biol Res Stn, Shenzhen 518121, Peoples R China
9.[Inyang, Anifiok
10.Chinese Acad Sci, Innovat Acad South China Sea Ecol & Environm Engn, Guangzhou 510301, Peoples R China
11.Marine & Fisheries Dev Res Ctr, Wenzhou 325009, Peoples R China
Recommended Citation
GB/T 7714
Cheng, Hao,Inyang, Anifiok,Li, Chang-Da,et al. Salt tolerance and exclusion in the mangrove plant Avicennia marina in relation to root apoplastic barriers[J]. ECOTOXICOLOGY,2020,29(6):676, 683.
APA Cheng, Hao,Inyang, Anifiok,Li, Chang-Da,Fei, Jiao,Zhou, Yan-Wu,&Wang, You-Shao.(2020).Salt tolerance and exclusion in the mangrove plant Avicennia marina in relation to root apoplastic barriers.ECOTOXICOLOGY,29(6),676.
MLA Cheng, Hao,et al."Salt tolerance and exclusion in the mangrove plant Avicennia marina in relation to root apoplastic barriers".ECOTOXICOLOGY 29.6(2020):676.
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