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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. 8 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...
September 15, 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
Xiaoli Liu, Xuejiao Shen, Yongkai Lai, Kang Ji, Hushan Sun, Yiyan Wang, Chengzong Hou, Ning Zou, Junli Wan, Junbao Yu
The long term (30 days) toxicological effects of environmentally relevant concentrations of Pb(2+) (20μg/L) and Zn(2+) (100μg/L) were characterized in Suaeda salsa using proteomics techniques. The responsive proteins were related to metabolism (Krebs cycle and Calvin cycle), protein biosynthesis, stress and defense, energy, signaling pathway and photosynthesis in Pb(2+), Zn(2+) and Pb(2+)+ Zn(2+) exposed groups in S. salsa after exposures for 30 days. The proteomic profiles also showed differential responses in S...
September 8, 2016: Ecotoxicology and Environmental Safety
Robert W Reid, Yan Luo, Sue Yan, Thomas E Miller, Bao-Hua Song
No abstract text is available yet for this article.
2016: Frontiers in Plant Science
Stefano Catola, Srikanta Dani Kaidala Ganesha, Luca Calamai, Francesco Loreto, Annamaria Ranieri, Mauro Centritto
Dimethylsulfoniopropionate (DMSP) and dimethyl sulphide (DMS) are compounds found mainly in marine phytoplankton and in some halophytic plants. DMS is a globally important biogenic volatile in regulating of global sulfur cycle and planetary albedo, whereas DMSP is involved in the maintenance of plant-environment homeostasis. Plants emit minute amounts of DMS compared to marine phytoplankton and there is a need for hypersensitive analytic techniques to enable its quantification in plants. Solid Phase Micro Extraction from Head Space (HS-SPME) is a simple, rapid, solvent-free and cost-effective extraction mode, which can be easily hyphenated with GC-MS for the analysis of volatile organic compounds...
2016: Frontiers in Plant Science
Ramona Marasco, Francesca Mapelli, Eleonora Rolli, Maria J Mosqueira, Marco Fusi, Paola Bariselli, Muppala Reddy, Ameur Cherif, George Tsiamis, Sara Borin, Daniele Daffonchio
Halophytes classified under the common name of salicornia colonize salty and coastal environments across tidal inundation gradients. To unravel the role of tide-related regimes on the structure and functionality of root associated bacteria, the rhizospheric soil of Salicornia strobilacea (synonym of Halocnemum strobilaceum) plants was studied in a tidal zone of the coastline of Southern Tunisia. Although total counts of cultivable bacteria did not change in the rhizosphere of plants grown along a tidal gradient, significant differences were observed in the diversity of both the cultivable and uncultivable bacterial communities...
2016: Frontiers in Microbiology
Qi Zhao, Jinwei Suo, Sixue Chen, Yudan Jin, Xiaolin Ma, Zepeng Yin, Yuhong Zhang, Tai Wang, Ji Luo, Wenhai Jin, Xia Zhang, Zhiqiang Zhou, Shaojun Dai
Soil alkalization severely affects crop growth and agricultural productivity. Alkali salts impose ionic, osmotic, and high pH stresses on plants. The alkali tolerance molecular mechanism in roots from halophyte Puccinellia tenuiflora is still unclear. Here, the changes associated with Na2CO3 tolerance in P. tenuiflora roots were assessed using physiological and iTRAQ-based quantitative proteomic analyses. We set up the first protein dataset in P. tenuiflora roots containing 2,671 non-redundant proteins. Our results showed that Na2CO3 slightly inhibited root growth, caused ROS accumulation, cell membrane damage, and ion imbalance, as well as reduction of transport and protein synthesis/turnover...
2016: Scientific Reports
Yan Yue, Qimei Lin, Muhammad Irfan, Qun Chen, Xiaorong Zhao
Salsola collina Pall. as a typical euhalophyte was slowly pyrolyzed at 300°C, 500°C and 700°C in a fixed-bed system. The physiochemical properties of syngas, bio-oil and biochar were assayed to understand the impact of pyrolysis temperature on these parameters and then to evaluate their potential values. The results showed that syngas yield (26.07-46.37%) increased with pyrolysis temperature, while biochar yield (47.54-26.83%) decreased. Bio-oil yield (26-30%) was hardly affected by pyrolysis temperature...
November 2016: Bioresource Technology
A M Shackira, Jos T Puthur
Heavy metal pollution in mangrove wetlands has become a growing matter of concern as it serves as sink and source for toxic heavy metals including cadmium (Cd). The present study evaluates the phytostabilization potential of a halophyte, A. ilicifolius L. towards Cd under hydroponic culture conditions. Accumulation, translocation and effects of Cd on the anti-oxidant system of A. ilicifolius were studied. Results indicated that A. ilicifolius accumulated Cd mainly in roots (96.4%) as compared to stem (1.4%) and leaves (0...
September 3, 2016: International Journal of Phytoremediation
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