检索结果-南通市图书馆

Seasonal variations of soil bacterial communities in suaeda wetland of Shuangtaizi River estuary, Northeast China

Journal of Environmental Sciences 2020年第11期32卷 45-53页

作者： Xuwang Zhang Zhe Ji Yating Shao Chaochen Guo Hao Zhou Lifen Liu Yuanyuan Qu Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education) School of Ocean Science and TechnologyDalian University of TechnologyPanjin 124221China Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education) School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China

Estuarine wetland is the transitional interface linking terrestrial with marine ecosystems,and wetland microbes are crucial to the biogeochemical cycles of nutrients.The soil samples were collected in four seasons(spring,S1;summer,S2;autumn,S3;and winter,S4)from suaeda wetland of Shuangtaizi River estuary,Northeast China,and the variations of bacterial community were evaluated by high-throughput sequencing.Soil properties presented a significant seasonal change,including p H,carbon(C)and total nitrogen(TN),and the microbial diversity,richness and structure also differed with seasons.Canonical correspondence analysis(CCA)and Mantel tests implied that soil p H,C and TN were the key factors structuring the microbial community.Gillisia(belonging to Bacteroidetes)and Woeseia(affiliating with Gammaproteobacteria)were the two primary components in the rhizosphere soils,displaying opposite variations with seasons.Based on PICRUSt(Phylogenetic Investigation of Communities by Reconstruction of Unobserved States)prediction,the xenobiotics biodegradation related genes exhibited a seasonal decline,while the majority of biomarker genes involved in nitrogen cycle showed an ascending trend.These findings could advance the understanding of rhizosphere microbiota of suaeda in estuarine wetland.

关键词： Microbial community suaeda Rhizosphere Nitrogen metabolism Seasonal variation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

In vitro bioactivity and phytochemical screening of suaeda maritima(Dumort):A mangrove associate from Bhitarkanika,India

引用

Asian Pacific Journal of Tropical Medicine 2011年第9期4卷 727-734页

作者： JK Patra NK Dhal HN Thatoi Department of Biotechnology North Orissa UniversityBaripada-757003OdishaIndia Department of Natural Products Institute of Minerals and Materials TechnologyBhubaneswar-751013OdishaIndia Department of Biotechnology College of Engineering and Technology(Bijn Patnaik University of Technology)Bhubaneswar-751003OdishaIndia

Objective:To investigate the in vitro antioxidant and antimicrobial activities along with phytochemical screening of organic and aqueous extracts of leaf and stem of suaeda maritima (Dumort).a mangrove associate from Bhitarkanika of Odisha.India.Methods:Antioxidant activity of the crode extracts was evaluated in terms of total antioxidant capacity,total phenol content,ascorbic acid content,DPPH radical scavenging,metal chelating,nitric oxide scavenging,and reducing power etc.The antimicrobial activity of the plant was determined by agar well diffusion method along with MIC and BBC carried out by microdilulion techniques against 10 gram positive and gram negative human pathogenic bacteria.The qualitative and qualitative phytochemical screening were carried out by standard biochemical assays.Results: Out of the seven antioxidant bioassavs,both the leaf and stem extracts were found to posses strong antioxidant properties of 70%to 92%for phenol,total antioxidant capacity,DPPH free radical scavenging aclivitv and fairly good ascorbic acid content,metal chelating(1.33%-22.55%). reducing power(0.01-0.12) and nitric oxide scavenging(0.84%-66.99%) activities.Out of the four extracts evaluated for antimicrobial activity,two leaf extracts such as acetone and ethanol showed promising activity against four pathogenic bacteria and one stem methanol extracts against one pathogenic bacteria when compared with amoxcycillin as standard.The MIC and MBC values of the antimicrobial extracts ranged between 2.5 to 5.0 mg/mL.Screening of phytochemicals showed presence of carbohydrates,protein,tannins,alkaloids and flavonoids in comparatively higher amount than other phytochemicals tested.Conclusions:The present study reveals the presence of potential antioxidants and antimicrobial properties in the plant extract which could be exploited for pharmaceutical application.

关键词： Mangrove plants suaeda maritima Antioxidant Antimicrobial Phytochemicals

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chlorophyll in desiccated seeds of a euhalophyte, suaeda physophora, and its significancy in plant adaptation to salinity during germination

引用

Science China(Life Sciences) 2008年第5期51卷 410-417页

作者： LI Yang1, ZHANG ShiRong1, SONG Jie2, WU ChenXi1, TIAN ChangYan3 & FENG Gu1 1 College of Resource and Environmental Science, China Agricultural University, Beijing 100094, China 2 College of Life Science, Shandong Normal University, Ji’nan 250014, China 3 Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830000, China College of Resource and Environmental Science China Agricultural University Beijing China College of Life Science Shandong Normal University Ji’an China Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Urumqi China

The seed cotyledons of a euhalophyte, suaeda physophora, were found to be dark green. The pigment extracted from the cotyledons was proved to be chlorophyll for the absorption spectra curve of extracts the same as that for leaves. Photosynthetic oxygen-exchanging could be detected after the seeds were moistened for 6 h. Microstructure of organelles in cotyledons of ungerminated seeds was detected by transmission electron microscopy. Histochemical pigmentation was used to investigate the degree of damage on the membrane of radicles. A xerophyte, Haloxylon persicum, whose cotyledons of desiccated seeds also contain chlorophyll was used as a comparative species. The results showed that S. physophora maintained the ultra-structure of chloroplasts, the integrity of plasma membranes of radicles kept much better than that of H. persicum, which showed the great adaptability to salinity of the euhalophyte even at the seed-germination stage. Seeds were incubated in 0 and 700 mmol/L NaCl for 10 days in darkness at 20 ℃ , then ungerminated seeds in NaCl solution were transferred to deionised water and reincubated for another 8 days and was recorded the germination recovery. Dry seeds moistened with deionised water germinated gradually in the dark and germination was maximal after 3 or 4 d. Seeds at 700 mmol/L NaCl for 10 d and transferred back to deionised water germinated abruptly, most seeds germinated in one day and photosynthesis was also detected. It is concluded that recovery germination of S. physophora ensured the seeds could germinate rapidly after salinity declines, for example under the mild but transitory favorable edaphic condition in early spring. Photosynthesis function in seeds might also promoted radicle growth and seedling establishment.

关键词： euhalophyte suaeda physophora cotyledons of dessicated seed chlorophyll germination

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Maternal salinity improves yield, size and stress tolerance of suaeda fruticosa seeds

引用

Journal of Arid Land 2020年第2期12卷 283-293页

作者： Syed Z SHAH Aysha RASHEED Bilquees GUL Muhammad A KHAN Brent LNIELSEN Abdul HAMEED Institute of Sustainable Halophyte Utilization University of KarachiKarachi 75270Pakistan Govt.Degree Boys College Sector 4ENew SaeedabadBaldia TownKarachi 75760Pakistan Department of Microbiology&Molecular Biology Brigham Young UniversityProvoUT 84602USA

Shrubby seablite or lani(suaeda fruticosa Forssk)is a perennial euhalophyte with succulent leaves,which could be planted on arid-saline lands for restoration and cultivated as a non-conventional edible or cash crop.Knowledge about the impacts of maternal saline environment on seed attributes of this important euhalophyte is lacking.This study investigated the effects of maternal salinity on yield,size and stress tolerance of S.fruticosa seeds.Seedlings of S.fruticosa were grown in a green net house under increasing maternal salinity levels(0,300,600 and 900 mM NaCl)until seed production.Total yield,size,stress tolerance and germination of the descended seeds under different maternal saline conditions were examined.Plants grown under saline conditions(300,600 and 900 mM NaCl)produce a substantially higher quantity of seeds than plants grown under non-saline condition(0 mM NaCl).Low maternal salinity(300 mM NaCl)improves seed size.Seeds produced under all maternal salinity levels display a higher tolerance to low temperature(night/day thermoperiod of 10℃/20℃),whereas seeds produced under 300 mM NaCl maternal saline condition show a better tolerance to high temperature(night/day thermoperiod of 25℃/35℃)during germination.Seeds from all maternal saline conditions germinate better in the 12 h photoperiod(12 h light/12 h dark)than in the dark(24 h dark);however,seeds produced from low and moderate maternal saline conditions(300 and 600 mM NaCl)show a higher germination in the dark than those from control and high maternal saline conditions(0 and 900 mM NaCl).In general,maternal salinity is found to improve yield,size and stress tolerance of S.fruticosa seeds.

关键词： euhalophyte maternal salinity salt tolerance seed germination non-saline condition suaeda fruticosa

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Seablite (suaeda maritima) Product for Cooking, Samut Songkram Province, Thailand

引用

Food and Nutrition Sciences 2014年第9期5卷 850-856页

作者： Ampornsri Pornpitakdamrong Yuttana Sudjaroen Faculty of Science and Technology Suan Sunandha Rajabhat University Bangkok Thailand

Seablite (suaeda maritima) is a salt marsh plant growing in mangrove forest. Local people in Samut Songkram, Thailand use seablite for different types of cooking such as traditional seablite salad, seablite curry with crabs, or scalded seablite with chili paste. The objectives of this research were: 1) to develop appropriate commercial seablite products of Samut Songkram province;2) to evaluate the nutritional values of the seablite products;and 3) to investigate biological characteristics of seablite on health promotion. The result showed that: 1) for food processing, seablite must be harvested in rainy season. Before cooking process, seablite should be scalded in boiled water added with sugar. However, dried seablite is the most suitable product which can be used to make vegetable salad;2) Based on the nutrition, the developed seablite products contained similar nutritional values to that of traditional fresh cooking except the developed products contained higher carbohydrate (4.85% vs. 4.59% w/w, respectively) with less water content (91.22% vs. 91.98% w/w) and lower amount of vitamin A (7982 vs. 9632 μg/100g) and vitamin E (2.80 vs. 3.51 mg/100g);3) Seablite contains antioxidants especially the seablite extracted with water and no poisonous effect to normal cells. The results of this study can be used as preliminary data for further developing of seablite in commercial scale. In addition, seablite can be applied in cooking recipes as well as raw materials with high nutritional quality.

关键词： Seablite suaeda maritime Food Processing Nutritional Values Biological Activities

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Physiological Response of Halophyte (suaeda altissima(L.) Pall.) and Glycophyte (Spinacia oleraceaL.) to Salinity

引用

American Journal of Plant Sciences 2013年第2期4卷 427-435页

作者： Nataly R. Meychik Yuliya I. Nikolaeva Igor P. Yermakov Plant Physiology Department Faculty of Biology M. V. Lomonosov Mosow State University Moscow Russia Plant Physiology Department Faculty of Biology M. V. Lomonosov Mosow State University Moscow Russia.

We have done a comparative study of ion status, growth and biochemical parameters in shoots and roots of seablite (suaeda altissima (L.) Pall.) and spinach (Spinacia oleracea L.) grown with different salinity levels in the medium (0.5 - 750 mМ). A distinctive feature of the halophyte was a high Na+ content in tissues at its low concentration in the medium (0.5 mM). In these conditions, Na+ accumulation in seablite roots was four-fold higher than in spinach roots, and Na+ content in seablite leaves was almost 20-fold higher than in spinach. Together with an increase in sodium concentration in the medium, K+ content decreased six-fold in seablite leaves, while in spinach it did not decrease so drastically. We can suppose that in the halophyte, some processes occur only in the presence of sodium, and these functions of sodium cannot be fully fulfilled by potassium. Analysis of protein and total nitrogen content in tissues shows that at high salinity, the ability to synthesize non-protein nitrogen-containing compounds increases in the halophyte and decreases in the glycophyte. Data on proline content dynamics show that its increase in tissues of spinach (salinity levels 150 and 250 mМ) and seablite (salinity levels 0.5 and 750 mМ) is an indicator of plant injury. In seablite and spinach, proline is not a major osmoregulator. Its concentration both in roots and leaves was no more than 2.5 μmol/g fresh weight. The data presented in this work concern the accumulation and distribution of Na+, Cl?, K+ and ions, as well as growth and biochemical parameters. Our data show that the development of adaptation reactions in the whole plants in the conditions of high salinity is determined by morphofunctional systems and their interaction.

关键词： suaeda altissima (L.) Pall. Spinacia oleracea L. Salinity Ions Praline Nitrogen Protein

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

接种摩西球囊霉对盐胁迫条件下盐地碱蓬叶片SOD和CAT活性的影响(英文)

引用

Agricultural Science & Technology 2008年第5期9卷 31-33,87页

作者：李涛段迪杨青王宝山山东师范大学生命科学学院山东济南250014

[Objective] Under salt stress condition,effects of inoculation of arbuscular mycorrhizal fungi Glomus mosseae on SOD and CAT activity in suaeda salsa seedlings under salt stress were studied.[Method]There were 2 NaCl levels,namely 0 and 400 mmol/L and each NaCl contained 2 treatments,one is inoculated by Glomus mosseae and the other is control.The growths of suaeda salsa,SOD and CAT activities as well as MDA content in leaves was determined.[Result]Under salt stress condition,Glomus mosseae could increase the growths of suaeda salsa,SOD and CAT activities in leaves and decreased MDA content in leaves.[Conclusion]It preliminarily demonstrated that Arbuscular Mycorrhizal(AM)Fungi could increase salt resistance of suaeda salsa by increasing the activities of SOD and CAT as well as alleviating membrane injury.

关键词： suaeda salsa Glomus mosseae SOD CAT Salt resistance

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

山东碱蓬属两种植物形态解剖学研究

引用

食品与药品 2014年第1期16卷 9-12页

作者：孙稚颖山东中医药大学药学院山东济南250355

目的鉴别比较山东碱蓬及盐地碱蓬的外部形态与其内部解剖构造。方法采用常规显微制片法,在解剖镜与光学显微镜下观察比较碱蓬及盐地碱蓬。结果碱蓬和盐地碱蓬在外部形态、叶表皮微形态、叶横切面、茎横切面解剖构造等方面存在差异。结... 详细信息

目的鉴别比较山东碱蓬及盐地碱蓬的外部形态与其内部解剖构造。方法采用常规显微制片法,在解剖镜与光学显微镜下观察比较碱蓬及盐地碱蓬。结果碱蓬和盐地碱蓬在外部形态、叶表皮微形态、叶横切面、茎横切面解剖构造等方面存在差异。结论本研究为碱蓬和盐地碱蓬的鉴别及开发利用提供了参考。

关键词：碱蓬盐地碱蓬形态解剖 suaeda glauca (Bge ) Bge S salsa (L ) Pall

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：