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João M Jesus, A C Cassoni, Anthony S Danko, António Fiúza, Maria-Teresa Borges
Constructed Wetlands (CWs) can be a valuable technology to treat high salinity wastewaters but it is not known their potential for removal of both nutrients and salt, and the type of plants to use. This study evaluated the effect of three plants on salt reduction and simultaneous nutrient removal in CWs microcosms with expanded clay and in hydroponic conditions. Initial values of the synthetic wastewater tested were EC=15dSm(-1), SAR=151; NH4(+)-N=24mgL(-1); PO4(3-)-P=30mgL(-1) and NO3(-)-N=34mgL(-1). With expanded clay CW removal efficiency for NH4(+)-N was 21, 88 and 85%, while for NO3(-)-N, it was 4, 56 and 68% for Spartina maritima, Juncus maritimus and Arundo donax, respectively...
November 18, 2016: Science of the Total Environment
Jian Zhu, Yu Shan, Tao Wang, Hongtao Sun, Zipeng Zhao, Lin Mei, Zheng Fan, Zhi Xu, Imran Shakir, Yu Huang, Bingan Lu, Xiangfeng Duan
Natural plants consist of a hierarchical architecture featuring an intricate network of highly interconnected struts and channels that not only ensure extraordinary structural stability, but also allow efficient transport of nutrients and electrolytes throughout the entire plants. Here we show that a hyperaccumulation effect can allow efficient enrichment of selected metal ions (for example, Sn(2+), Mn(2+)) in the halophytic plants, which can then be converted into three-dimensional carbon/metal oxide (3DC/MOx) nanocomposites with both the composition and structure hierarchy...
November 17, 2016: Nature Communications
C G Pereira, L Custódio, M J Rodrigues, N R Neng, J M F Nogueira, J Carlier, M C Costa, J Varela, L Barreira
The halophyte species Plantago coronopus has several described ethnomedicinal uses, but few reported biological activities. This work carried out for the first time a comparative analysis of P. coronopus organs in terms of phenolic composition and antioxidant activity of organic and water extracts from roots, leaves and flowers. The leaves contents in selected nutrients, namely amino acids and minerals, are also described. Roots (ethyl acetate and methanol extracts) had the highest radical scavenging activity (RSA) towards 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radicals, while leaves (hexane extract) had higher RSA on nitric oxide radical and iron chelating ability...
November 16, 2016: Brazilian Journal of Biology, Revista Brasleira de Biologia
H H Liu, J Liu, S L Fan, M Z Song, X L Han, F Liu, F F Shen
No abstract text is available yet for this article.
November 3, 2016: Journal of Experimental Botany
William J Percey, Lana Shabala, Qi Wu, Nana Su, Michael C Breadmore, Rosanne M Guijt, Jayakumar Bose, Sergey Shabala
Soil salinity remains a major threat to global food security, and the progress in crop breeding for salinity stress tolerance may be achieved only by pyramiding key traits mediating plant adaptive responses to high amounts of dissolved salts in the rhizosphere. This task may be facilitated by studying natural variation in salinity tolerance among plant species and, specifically, exploring mechanisms of salinity tolerance in halophytes. The aim of this work was to establish the causal link between mesophyll ion transport activity and plant salt tolerance in a range of evolutionary contrasting halophyte and glycophyte species...
October 13, 2016: Plant Physiology and Biochemistry: PPB
Chang-Suk Kong, You Ah Kim, Hojun Kim, Youngwan Seo
A furochromone, heterocarpin (1), was isolated from the halophyte Corydalis heterocarpa, along with four known compounds (2-5), which were obtained for the first time from this genus. The chemical structures of these compounds were determined by extensive 2-D NMR experiments and by comparison with the data reported in the literature. Compound 1 showed significant cytotoxic activities against four human cancer cells, AGS (human gastric cancer), HT-29 (human colon cancer), HT-1080 (human fibrosarcoma) and MCF-7 (human breast carcinoma)...
November 3, 2016: Food & Function
Sandeep Sharma, Jayant Kulkarni, Bhavanath Jha
Use of Plant growth promoting rhizobacteria (PGPR) is a promising strategy to improve the crop production under optimal or sub-optimal conditions. In the present study, five diazotrophic salt tolerant bacteria were isolated from the roots of a halophyte, Arthrocnemum indicum. The isolates were partially characterized in vitro for plant growth promoting traits and evaluated for their potential to promote growth and enhanced salt tolerance in peanut. The 16S rRNA gene sequence homology indicated that these bacterial isolates belong to the genera, Klebsiella, Pseudomonas, Agrobacterium, and Ochrobactrum...
2016: Frontiers in Microbiology
Seung Jae Lee, Eun-Mi Jeong, Ah Young Ki, Kyung-Seo Oh, Joseph Kwon, Jae-Hyuk Jeong, Nam-Jin Chung
High salinity is a major abiotic stress that affects the growth and development of plants. This type of stress can influence flowering, the production of crops, defense mechanisms and other physiological processes. Previous studies have attempted to elucidate salt-tolerance mechanisms to improve plant growth and productivity in the presence of sodium chloride. One such plant that has been studied in detail is Salicornia, a well-known halophyte, which has adapted to grow in the presence of high salt. To further the understanding of how Salicornia grows and develops under high saline conditions, Salicornia herbacea (S...
September 29, 2016: Journal of Plant Physiology
S Navarro-Torre, J M Barcia-Piedras, E Mateos-Naranjo, S Redondo-Gómez, M Camacho, M A Caviedes, E Pajuelo, I D Rodríguez-Llorente
There is an increasing interest to use halophytes for revegetation of salt affected ecosystems, as well as in understanding their mechanisms of salt tolerance. We hypothesized that bacteria from the phyllosphere of these plants might play a key role in its high tolerance to excessive salinity. Eight endophytic bacteria belonging to Bacillus and closely related genera were isolated from phyllosphere of the halophyte Arthrocnemum macrostachyum growing in salty agricultural soils. The presence of plant-growth promoting (PGP) properties, enzymatic activities and tolerance towards NaCl was determined...
October 22, 2016: Plant Biology
Hayden Wilson, David Mycock, Isabel M Weiersbye
Tamarix usneoides is a halophyte tree endemic to south-western Africa. This species is known to excrete a range of ions from specialised glandular structures on its leaves. To understand the mechanisms involved in the transport, sequestration and excretion of ions by the glands, a study was performed on salt gland distribution and ultrastructure. The glands are vesiculated trichomes, comprised of eight cells viz., two basal collecting cells and six excretory cells, partially bounded by a secondary cell wall which, could serve as an impermeable barrier, forcing excess ions to move from the apoplast of the surrounding tissue into the cytoplasm of the basal excretory cells...
October 14, 2016: International Journal of Phytoremediation
Doongar R Chaudhary, Aditya P Rathore, Raghawendra Kumar, Bhavanath Jha
Microbial communities in intertidal coastal soils respond to a variety of environmental factors related to resources availability, habitat characteristics and vegetation. These intertidal soils of India are dominated with Salicornia brachiata, Aeluropus lagopoides and Suaeda maritima halophytes which play a significant role in carbon sequestration, nutrient cycling and improving micro-environment. However, the relative contribution of edaphic factors, halophytes, rhizosphere and bulk sediments on microbial community composition is poorly understood in the intertidal sediments...
October 14, 2016: International Journal of Phytoremediation
Chun-Mei Wang, Zeng-Run Xia, Guo-Qiang Wu, Hui-Jun Yuan, Xin-Rui Wang, Jin-Hua Li, Fu-Ping Tian, Qian Zhang, Xin-Qiang Zhu, Jiong-Jie He, Tanweer Kumar, Xiao-Li Wang, Jin-Lin Zhang
Hordeum brevisubulatum, called as wild barley, is a useful monocotyledonous halophyte for soil improvement in northern China. Although previously studied, its main salt tolerance mechanism remained controversial. The current work showed that shoot Na(+) concentration was increased rapidly with stress time and significantly higher than in wheat during 0-168h of 100mM NaCl treatment. Similar results were also found under 25 and 50mM NaCl treatments. Even K(+) was increased from 0.01 to 50mM in the cultural solution, no significant effect was found on tissue Na(+) concentrations...
November 2016: Plant Science: An International Journal of Experimental Plant Biology
Sachin Ashruba Gharat, Shaifaly Parmar, Subodh Tambat, Madavan Vasudevan, Birendra Prasad Shaw
Although salt tolerance is a feature representative of halophytes, most studies on this topic in plants have been conducted on glycophytes. Transcriptome profiles are also available for only a limited number of halophytes. Hence, the present study was conducted to understand the molecular basis of salt tolerance through the transcriptome profiling of the halophyte Suaeda maritima, which is an emerging plant model for research on salt tolerance. Illumina sequencing revealed 72,588 clustered transcripts, including 27,434 that were annotated using BLASTX...
2016: PloS One
Rita Sharma, Silas Wungrampha, Vinay Singh, Ashwani Pareek, Manoj K Sharma
Shrinking arable land due to soil salinization and, depleting fresh water resources pose serious worldwide constraints to crop productivity. A vision of using plant feedstock for biofuel production can only be realized if we can identify alternate species that can be grown on saline soils and therefore, would not compete for the resources required for conventional agriculture. Halophytes have remarkable ability to grow under high salinity conditions. They can be irrigated with seawater without compromising their biomass and seed yields making them good alternate candidates as bioenergy crops...
2016: Frontiers in Plant Science
Sonia Szymańska, Tomasz Płociniczak, Zofia Piotrowska-Seget, Katarzyna Hrynkiewicz
The main objective of our study was to assess density and diversity of rhizosphere (R) and endophytic (E) microorganisms associated with the halophyte S. europaea. Microorganisms were isolated from two saline sites (S1: 55dSm(-1), anthropogenic origin; S2: 112dSm(-1), natural salinity) located in central Poland and compared with microbial populations in the soil (S) using culture-independent (phospholipid fatty acids analysis, PLFA) and culture-dependent techniques. The endophytic and rhizosphere bacteria were identified and screened for nifH and acdS genes, and their metabolic properties were assessed...
November 2016: Microbiological Research
Azibar Rodríguez-Iruretagoiena, Ranju Chowdhury, Ainara Gredilla, Silvia Fdez-Ortiz deVallejuelo, Alberto de Diego, Santosh Kumar Sarkar, Gorka Arana, Juan Manuel Madariaga, Perumal Venkatachalam
Absorption, accumulation and translocation of 12 trace elements in nine dominant mangrove plants in the Indian Sundarban Wetland revealed both organ-specific and site-specific characteristics. An overall enrichment of elements was recorded in rhizosediment, exceeding the prescribed effects range-low (ER-L) of consensus based sediment quality guidelines (SQGs) for Cu and Pb. Avicennia officinalis, A. alba, Ceriops decandra and Excoecaria agallocha exhibited unique potential for accumulating Al, Cd, Co, Cr, Cu, Ni, Mn and Zn and could be considered efficient accumulators...
September 20, 2016: Bulletin of Environmental Contamination and Toxicology
Haroun Chenchouni
This study aims to characterize soil properties and to investigate how these parameters, including soil salinity, are related to zonation and distributional patterns of halophytic plants occurring at edges of the Djendli Sabkha (northeastern Algeria). Soil samples were collected from four stations at Sabkha edges with seven samples for each station. Physicochemical soil parameters were analysed in each vegetation belt of halophytes. Relationships between soil traits were tested to determine spatial variation and their effects on vegetation cover of the principal halophyte species...
September 14, 2016: Science of the Total Environment
Haichang Yang, Jingya Wang, Fenghua Zhang
The soil microbial biomass carbon (MBC) is considered as a sensitive index of soil carbon ecosystem. The distribution of aggregate-associated MBC determines the capacity of the soil to store soil organic carbon (SOC). We compared soil aggregate-associated SOC and aggregate-associated MBC under four halophyte communities: Karelinia caspia (Pall.) Less. (Abbr. K. caspia), Bassia dasyphylla (Fisch. et C. A. Mey.) Kuntze. (Abbr. B. dasyphylla), Haloxylon ammodendron (C. A. Mey.) Bunge. (Abbr. H. ammodendron), and Tamarix ramosissima Lour (Abbr...
December 2016: Environmental Science and Pollution Research International
Concetta Maria Messina, Gioacchino Bono, Rosaria Arena, Mariano Randazzo, Simona Manuguerra, Andrea Santulli
Quality and shelf-life of whole and filleted Coryphaena hippurus, stored with modified atmosphere packaging (MAP) and natural antioxidants from halophytes (HAL), were investigated. Fillets were divided into control, simply sealed in trays; MAP, preserved by modified atmosphere (45% CO2, 50% N2, 5% O2); and MAP-HAL, pretreated with antioxidants and preserved by MAP. Whole and filleted fish were stored at -1 ± 0.5°C for 18 days. The quality of the samples was analyzed at the time of packaging and after 3, 6, 9, 12, 15, and 18 days...
September 2016: Food Science & Nutrition
Maria Camacho, Susana Redondo-Gómez, Ignacio Rodríguez-Llorente, Manfred Rohde, Cathrin Spröer, Peter Schumann, Hans-Peter Klenk, Maria Del Carmen Montero-Calasanz
A novel, halophilic, motile rod, Gram-staining-negative and non-endospore forming bacterium, designated Cs25T, was isolated in a tidal flat from the rhizosphere of the halophyte Arthrocnemum macrostachyum. Strain Cs25T was observed to be catalase negative and oxidase positive, and to hydrolyze hypoxanthine. Growth occurred from 15-40 ºC, at pH 7.0-10.0 and with 1-11 % (w/v) NaCl. Q-10 was identified as the dominant ubiquinone and the major cellular fatty acids were C18:1ω7c, 11-methyl C18:1ω7c, C20:1ω7c and C18:0...
September 11, 2016: International Journal of Systematic and Evolutionary Microbiology
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