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Rahma Goussi, Arafet Manaa, Walid Derbali, Simone Cantamessa, Chedly Abdelly, Roberto Barbato
Salinity is one of the most important abiotic stress affecting plant growth and productivity worldwide. Photosynthesis, together with cell growth, is among the primary process affected by salinity. Here, we report the effects of salt stress on photosynthesis in the model halophyte Thellungiella salsuginea. Plants were grown in hydroponic system and then treated for 2 weeks with different NaCl concentrations (0, 100, 200 and 400 mM). Leaf analysis using both photonic and transmission electron microscopes showed some changes in mesophyll cell organization, including shape and dimension...
May 2, 2018: Journal of Photochemistry and Photobiology. B, Biology
Ali Ebadi, Nayer Azam Khoshkholgh Sima, Mohsen Olamaee, Maryam Hashemi, Reza Ghorbani Nasrabadi
The negative impact of salinity on plant growth and the survival of rhizosphere biota complicates the application of bioremediation to crude oil-contaminated saline soils. Here, a comparison was made between the remedial effect of treating the soil with Pseudomonas aeruginosa, a salinity tolerant hydrocarbon-degrading consortium in conjunction with either the halophyte Salicornia persica or the non-halophyte Festuca arundinacea. The effect of the various treatments on salinized soils was measured by assessing the extent of total petroleum hydrocarbon (TPH) degradation, the soil's dehydrogenase activity, the abundance of the bacteria and the level of phytotoxicity as measured by a bioassay...
May 8, 2018: Journal of Environmental Management
Govindarajan Karthivashan, Shin-Young Park, Mee-Hyang Kweon, Joonsoo Kim, Md Ezazul Haque, Duk-Yeon Cho, In-Su Kim, Eun-Ah Cho, Palanivel Ganesan, Dong-Kug Choi
The Salicornia europaea L. (SE) plant is a halophyte that has been widely consumed as a seasoned vegetable, and it has been recently reported to counteract chronic diseases related to oxidative and inflammatory stress. In this study, we performed an initial phytochemical analysis with in vitro biochemical tests and chromatographic profiling of desalted and enzyme-digested SE ethanol extract (SE-EE). Subsequently, we evaluated the anti-neuroinflammatory and ameliorative potential of SE-EE in LPS-inflicted BV-2 microglial cells and scopolamine-induced amnesic C57/BL6N mice, respectively...
May 8, 2018: Scientific Reports
Jesús Alberto Pérez-Romero, Yanina Lorena Idaszkin, Jose-Maria Barcia-Piedras, Bernardo Duarte, Susana Redondo-Gómez, Isabel Caçador, Enrique Mateos-Naranjo
A mesocosm experiment was designed to assess the effect of atmospheric CO2 increment on the salinity tolerance of the C3 halophyte Salicornia ramosissima. Thus, the combined effect of 400 ppm and 700 ppm CO2 at 0, 171 and 510 mM NaCl on plants growth, gas exchange, chlorophyll fluorescence parameters, pigments profiles, antioxidative enzyme activities and water relations was studied. Our results highlighted a positive effect of atmospheric CO2 increment on plant physiological performance under suboptimal salinity concentration (510 mM NaCl)...
May 1, 2018: Plant Physiology and Biochemistry: PPB
Bronwyn J Barkla, Timothy Rhodes, Kieu-Nga T Tran, Chathura Wijesinghege, John C Larkin, Maheshi Dassanayake
Endopolyploidy occurs when DNA replication takes place without subsequent mitotic nuclear division, resulting in cell-specific ploidy levels within tissues. In plants, endopolyploidy plays an important role in sustaining growth and development, but only a few studies have demonstrated a role in abiotic stress response. In this study, we investigated the function of ploidy level and nuclear and cell size in leaf expansion throughout development and tracked cell-type specific ploidy in the halophyte Mesembryanthemum crystallinum...
May 3, 2018: Plant Physiology
Salma Mukhtar, Samina Mehnaz, Muhammad Sajjad Mirza, Babur Saeed Mirza, Kauser Abdulla Malik
Salinity is one of the major abiotic stresses, with a total of 3% of the world's land mass being affected by salinity. Approximately 6.3 million hectares of land in Pakistan is affected by salinity to varying degree and most of the areas are arid to semiarid with low annual precipitation. The aim of present study is to identify and characterize Bacillus and Bacillus-derived bacterial genera from the rhizospheric and non-rhizospheric soil samples from Khewra Salt Mine, Pakistan by using culture-independent as well as culture-dependent methods...
April 27, 2018: Canadian Journal of Microbiology
Mohamed E Abd El-Hack, Dalia H Samak, Ahmed E Noreldin, Muhammad Arif, Hilal S Yaqoob, Ayman A Swelum
Water represents 71% of all earth area and about 97% of this water is salty water. So, only 3% of the overall world water quantity is freshwater. Human can benefit only from 1% of this water and the remaining 2% freeze at both poles of earth. Therefore, it is important to preserve the freshwater through increasing the plants consuming salty water. The future prosperity of feed resources in arid and semi-arid countries depends on economic use of alternative resources that have been marginalized for long periods of time, such as halophytic plants, which are one such potential future resource...
April 26, 2018: Environmental Science and Pollution Research International
Ming-Xi Zhou, Hélène Dailly, Marie-Eve Renard, Rui-Ming Han, Stanley Lutts
Data regarding NaCl impact on halophyte plant species exposed to a polymetallic contamination remain scarce. Seedlings of the salt marsh species Kosteletzkya pentacarpos were simultaneously exposed to cadmium (10 μM) and zinc (100 μM) in the absence or presence of 50 mM NaCl. Heavy metal exposure reduced plant growth and increased Cd and Zn concentrations in all organs. Cd and Zn accumulation reduced net photosynthesis in relation to stomatal closure, decreased in chlorophyll concentration and alteration in chlorophyll fluorescence-related parameters...
April 14, 2018: Environmental Science and Pollution Research International
Na-Hyun Kim, Jeong-Doo Heo, Jung-Rae Rho, Min Hye Yang, Eun Ju Jeong
Background: In traditional folk medicine, Limonium tetragonum is used in the treatment of uterine hemorrhage, tinnitus, and oligomenorrhea. Objective: This study aimed to identify the therapeutic effect of L. tetragonum EtOAc extract (EALT) on liver of mice with chronic alcohol poisoning. Materials and Methods: C57BL/6J mice were administered 100 mg/kg of EALT with a single binge ethanol/Lieber-DeCarli liquid diet for 8 weeks. Results: The chronic-binge ethanol diet induced a significant increase in liver marker enzyme activities...
January 2018: Pharmacognosy Magazine
Cattarin Theerawitaya, Nana Yamada-Kato, Harminder Pal Singh, Suriyan Cha-Um, Teruhiro Takabe
The plant specific DREPP proteins have been shown to bind Ca2+ and regulate the N-myristoylation signaling and microtubule polymerization in Arabidopsis thaliana. The information about DREPP proteins in other plants is, however, scarce. In the present study, we isolated the DREPP gene from a halophytic grass, Sporobolus virginicus, and tested whether the gene was involved in alkaline salt stress responses. The SvDREPP1 was cloned from S. virginicus by RACE methods. The isolated gene showed high homology to DREPP homologs from C4 grasses, Setaria italica, and Panicum hallii as well as rice (OsDREPP1)...
March 25, 2018: Protoplasma
Catarina Guerreiro Pereira, Luísa Barreira, Sebastiaan Bijttebier, Luc Pieters, Cátia Marques, Tamára F Santos, Maria João Rodrigues, João Varela, Luísa Custódio
This work explored the biotechnological potential of the medicinal halophyte Artemisia campestris subsp. maritima (dune wormwood) as a source of health promoting commodities. For that purpose, infusions, decoctions and tinctures were prepared from roots and aerial-organs and evaluated for in vitro antioxidant, anti-diabetic and tyrosinase-inhibitory potential, and also for polyphenolic and mineral contents and toxicity. The dune wormwood extracts had high polyphenolic content and several phenolics were identified by ultra-high performance liquid chromatography-photodiode array-mass-spectrometry (UHPLC-PDA-MS)...
March 16, 2018: Scientific Reports
Shuai Zhao, Jun-Jie Liu, Samiran Banerjee, Na Zhou, Zhen-Yong Zhao, Ke Zhang, Chang-Yan Tian
While saline soils account for 6.5% of the total land area globally, it comprises about 70% of the area in northwestern China. Microbiota in these saline soils are particularly important because they are critical to maintaining ecosystem services. However, little is known about the microbial diversity and community composition in saline soils. To investigate the distribution patterns and edaphic determinants of bacterial communities in saline soils, we collected soil samples across the hypersaline Ebinur Lake shoreline in northwestern China and assessed soil bacterial communities using bar-coded pyrosequencing...
March 14, 2018: Scientific Reports
Huaibin Wei, Huibin Yu, Hongwei Pan, Hongjie Gao
UV-visible absorption spectroscopy combined with principal component analysis (PCA) and two-dimensional correlation (2D correlation) is used to trace components of dissolved organic matter (DOM) extracted from soils in a larger estuarine delta and to investigate spatial variations of DOM fractions. Soil samples of different depths were collected from native halophyte soils along a saline gradient, i.e., Suaeda salsa Comm. (SSC), Chenopodium album Comm. (CAC), Phragmites australis Comm. (PAC), and Artemisia selengensis Comm...
March 9, 2018: Environmental Science and Pollution Research International
Hassan Etesami, Gwyn A Beattie
Salinity stress is one of the major abiotic stresses limiting crop production in arid and semi-arid regions. Interest is increasing in the application of PGPRs (plant growth promoting rhizobacteria) to ameliorate stresses such as salinity stress in crop production. The identification of salt-tolerant, or halophilic, PGPRs has the potential to promote saline soil-based agriculture. Halophytes are a useful reservoir of halotolerant bacteria with plant growth-promoting capabilities. Here, we review recent studies on the use of halophilic PGPRs to stimulate plant growth and increase the tolerance of non-halophytic crops to salinity...
2018: Frontiers in Microbiology
S A Petropoulos, A Karkanis, N Martins, I C F R Ferreira
Wild native species are usually grown under severe and stressful conditions, while a special category includes halophytic species that are tolerant to high salinity levels. Native halophytes are valuable sources of bioactive molecules whose content is higher in saline than normal conditions, since the adaptation to salinity mechanisms involve apart from changes in physiological functions the biosynthesis of protectant molecules. These compounds include secondary metabolites with several beneficial health effects which have been known since ancient times and used for medicinal purposes...
April 2018: Food and Chemical Toxicology
Walid Ben-Romdhane, Rania Ben-Saad, Donaldo Meynard, Nabil Zouari, Ali Mahjoub, Lotfi Fki, Emmanuel Guiderdoni, Abdullah Al-Doss, Afif Hassairi
Herein, we report isolation of the AlTMP2 gene from the halophytic C4 grass Aeluropus littoralis. The subcellular localization suggested that AlTMP2 is a plasma membrane protein. In A. littoralis exposed to salt and osmotic stresses, the AlTMP2 gene was induced early and at a high rate, but was upregulated relatively later in response to abscisic acid and cold treatments. Expression of AlTMP2 in tobacco conferred improved tolerance against salinity, osmotic, H2 O2 , heat, and freezing stresses at the germination and seedling stages...
February 15, 2018: Protoplasma
Fehmida Bibi, Gary A Strobel, Muhammad I Naseer, Muhammad Yasir, Ahmed A Khalaf Al-Ghamdi, Esam I Azhar
Halophytes are associated with the intertidal forest ecosystem of Saudi Arabia and seemingly have an immense potential for yielding useful and important natural products. In this study we have aimed to isolate and characterize the endophytic and rhizospheric bacterial communities from the halophyte, Salsola imbricata , In addition these bacterial strains were identified and selected strains were further studied for bioactive secondary metabolites. At least 168 rhizspheric and endophytic bacteria were isolated and of these 22 were active antagonists against the oomycetous fungal plant pathogens, Phytophthora capsici and Pythium ultimum ...
2018: Frontiers in Microbiology
Bradley P Degens, Rick Krassoi, Lynette Galvin, Brad Reynolds, Tina Micevska
Measurements of potential acidity in water are used to manage aquatic toxicity risks of discharge from acid sulfate soils or acid mine drainage. Net acidity calculated from pH, dissolved metals and alkalinity is a common measurement of potential acidity but the relevance of current risk thresholds to aquatic organisms are unclear. Aquatic toxicity testing was carried out using four halophytic organisms with water from four saline sources in southern Western Australia (3 acidic drains and one alkaline river; 39-40 g TDS/L) where acidity was varied by adjusting pH to 4...
May 2018: Chemosphere
Gokhan Zengin, Zaahira Aumeeruddy-Elalfi, Adriano Mollica, Mustafa Abdullah Yilmaz, Mohamad Fawzi Mahomoodally
BACKGROUND: Halophytes are considered as valuable sources of traditional drugs in different countries. PURPOSE: The present study aimed to evaluate biological and chemical fingerprints of three halophytes (Arthrocnemum macrostachyum (Moric.) C, Koch, Halimione portulacoides (L.) Aellen and Salicornia europaea L.). MATERIALS AND METHODS: The antioxidant and enzymatic inhibitory potential (acetylcholinesterase, butyrylcholinesterase, α-amylase, α-glucosidase, and tyrosinase) were assessed...
January 1, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
Chunsun Gu, Sheng Xu, Zhiquan Wang, Liangqin Liu, Yongxia Zhang, Yanming Deng, Suzhen Huang
As a halophyte, Iris lactea var. chinensis (I. lactea var. chinensis) is widely distributed and has good drought and heavy metal resistance. Moreover, it is an excellent ornamental plant. I. lactea var. chinensis has extensive application prospects owing to the global impacts of salinization. To better understand its molecular mechanism involved in salt resistance, the de novo sequencing, assembly, and analysis of I. lactea var. chinensis roots' transcriptome in response to salt-stress conditions was performed...
April 2018: Plant Physiology and Biochemistry: PPB
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