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Cloning of Salt Tolerance-Related cDNAs from the Mangrove Plant sesuvium portulacastrum L.

Journal of Integrative Plant Biology 2006年第8期48卷 952-957页

作者： Hui-Cai Zeng Liu-Hong Deng Chun-Fa Zhang State Key Laboratory of Tropical Crop Biotechnology Institute of Tropical Bioscience and Biotechnology Chinese Academy of Tropical Agricultural Science （ CATAS） Kaikou 571101 China Environmental and Plant Protection Institute CATAS Danzhou 571737 China

In an attempt to isolate and identify the target genes relevant to salt tolerance in a mangrove plant （sesuvium portulacastrum L.）, a subtracted cDNA library was constructed via suppressive subtractive hybridization （SSH）, in which the poly（A）＋RNA isolated from salt-tolerant S. portulacastrum leaves was used as a tester, whereas the driver was poly（A）＋RNA, derived from salt-sensitive S. portulacastrum leaves. Screening of this subtracted cDNA library revealed five clones, of which the expression levels in the salt-tolerant plant were markedly higher than those observed in the salt-sensitive plant, indicating that these candidate clones may be involved in salt-tolerance pathways. Among the clones isolated, P66, P175, and P233 are novel because no significant similarity was obtained upon alignment with the GenBank database. Clone P89 demonstrated high homology with NADPH of Arabidopsis thaliana, whereas clone P152 was highly homologous with the gene encoding late embryogenesis abundant （LEA） protein of A. thaliana. The full-length gene of clone P152, with a predicated 344 amino acid residues, was shown to bear LEA-2 domains, a signature motif for proteins that have been enriched under salty and drought conditions. It is thus implied that clone P152 would be a salt-tolerance gene of S. portulacastrum. In addition, we have also developed a strategy for the extraction of total RNA from mangrove plants.

关键词： mangrove salt tolerance-related cDNAs sesuvium portulacastrum suppressive subtractive hybridization.

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Model assessment of nutrient removal via planting sesuvium portulacastrum in floating beds in eutrophic marine waters:the case of aquaculture areas of Dongshan Bay

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Acta Oceanologica Sinica 2019年第12期38卷 91-100页

作者： Xuehai Liu Xinming Pu Donglian Luo Jing Lu Zili Liu First Institute of Oceanography Ministry of Natural ResourcesQingdao 266061China Fujian Fishery Research Institute Xiamen 361012China Laboratory of Marine Ecology and Environmental Science Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Laboratory for Regional Oceanography and Numerical Modeling Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Key Laboratory of Marine Science and Numerical Modeling Ministry of Natural ResourcesQingdao 266061China Key Laboratory of Science and Engineering for the Marine Ecological Environment Ministry of Natural ResourcesQingdao 266061China

Many coastal seas are severely eutrophic and required to reduce nutrient concentrations to meet a certain water quality *** proposed a method for nutrient removal by planting sesuvium portulacastrum at the water surface using the floating beds in the aquaculture area of the Dongshan Bay as an example,which is an important net-cage culture base in China and where dissolved inorganic nitrogen(DIN)and dissolved inorganic phosphate(DIP)reach 0.75 mg/L and 0.097 mg/L,respectively far exceeding China’s Grade IV water quality *** simulations were taken using the ecological model,field observations and field plantation experimental results to assess the environmental restoration effects of planting *** at some certain spatial *** field experiments suggested that the herbs can absorb 377 g/m^2 nitrogen and 22.9 g/m^2 phosphorus in eight months with an inserting density of^60 shoot/m^*** numerical experiments show that the greater the plantation area is,the more nutrient *** in^12%of the study area could lower nutrients to the required Grade II standards,i.e.,0.2 mg/L

关键词： phytoremediaton sesuvium portulacastrum ecological model nutrient removal

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Mosquito larvicidal properties of volatile oil from salt marsh mangrove plant of sesuvium portulacastrum against Anopheles stephensi and Aedes aegypti

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Journal of Coastal Life Medicine 2013年第1期 66-71页

作者： Mohamed Yacoob Syed Ali Venkatraman Anuradha SyedAbudhair Sirajudeen Prathasarathy Vijaya Nagarajan Yogananth Ramachandran Rajan Peer Mohamed Kalitha Parveen PG&Research Department of Biotechnology Mohamed Sathak College of Arts&ScienceSholinganallurChennai-600119Tamil NaduIndia Center for Marine Fisheries Research Institute Mandapam CampTamil NaduIndia

Objective:To identify the larvicidal activity of the volatile oil from sesuvium portulacastrum(***)against Anopheles stephensi and Aedes ***:Volatile oil extract of *** was prepared in a graded series of *** test for the larvicidal effect of volatile oil against mosquitos larvae was conducted in accordance with the WHO standard *** of 25 early 4th instar larvae of two mosquitoes were transferred to 250 mL enamel bowl containing 199 mL of distilled water and 1 mL of plant *** experiment was conducted with triplicate with concurrent a control ***:Volatile oil extract of *** showed toxicity against 4th instar larvae of Aedes aegypti and Anopheles stephensi with equivalent LC50 value[(63±7.8)μL/mL,LCL-UCL=55.2-64.0]and LC90 value[(94.2±3.9)μL/mL]in maximum activity with minimum concentration(200μL/mL)of volatile oil and followed by maximum activity of 250μL concentration showed LC50 value=(68.0±8.2)μL/mL,LCL-UCL=66.26-69.2 and LC50 value of(55.2±2.8)μL/mL,LCL-UCL=53.7-56.9,LC90=(95.2±1.25)μL/mL and followed by 250μL of oil extract against 4th instar larvae of Aedes aegypti ***:It is inferred from the present study that,the extracts from salt marsh mangrove plan of *** are identified as a potential source of safe and efficacious mosquito control agents for the management of vector borne diseases of malaria and dengue.

关键词： Aedes aegypti Anopheles stephensi Larvicidal Oleic acid sesuvium portulacastrum

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