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Gang Yu, Jingtao Li, Xinhua Sun, Yanzhi Liu, Xueliang Wang, Hao Zhang, Hongyu Pan
Plant productivity is limited by salinity stress, both in natural and agricultural systems. Identification of salt stress-related genes from halophyte can provide insights into mechanisms of salt stress tolerance in plants. Atriplex canescens is a xero-halophyte that exhibits optimum growth in the presence of 400 mM NaCl. A cDNA library derived from highly salt-treated A. canescens plants was constructed based on a yeast expression system. A total of 53 transgenic yeast clones expressing enhanced salt tolerance were selected from 10⁵ transformants...
November 17, 2017: International Journal of Molecular Sciences
Young-Hyun You, Jong Myong Park, Yeong Gyo Seo, Woong Lee, Myung-Suk Kang, Jong-Guk Kim
This study analyzed the distribution of endophytic fungi in 3 coastal environments with different climatic, geographical, and geological characteristics: the volcanic islands of Dokdo, the East Sea, and the West Sea of Korea. The isolated fungal endophytes were characterized and analyzed with respect to the characteristics of their host environments. For this purpose, we selected common native coastal halophyte communities from three regions. Molecular identification of the fungal endophytes showed clear differences among the sampling sites and halophyte host species...
September 2017: Mycobiology
Tapan Kumar Mondal, Hukam Chand Rawal, Kishor Gaikwad, Tilak Raj Sharma, Nagendra Kumar Singh
Oryza coarctata plants, collected from Sundarban delta of West Bengal, India, have been used in the present study to generate draft genome sequences, employing the hybrid genome assembly with Illumina reads and third generation Oxford Nanopore sequencing technology. We report for the first time that more than 85.71 % of the genome coverage and the data have been deposited in NCBI SRA, with BioProject ID PRJNA396417.
2017: F1000Research
Can Liu, Baomei Wang, Zhaoxia Li, Zhenghua Peng, Juren Zhang
NAC proteins constitute one of the largest families of plant-specific transcription factors, and a number of these proteins participate in the regulation of plant development and responses to abiotic stress. T. HALOPHILA STRESS RELATED NAC1 (TsNAC1) cloned from the halophyte Thellungiella halophila is a NAC transcription factor gene, and its overexpression can improve abiotic stress resistance, especially in the salt stress tolerance, in both T. halophila and Arabidopsis and retard the growth of these plants...
November 9, 2017: Plant Physiology
Doongar R Chaudhary, Juyoung Seo, Hojeong Kang, Aditya P Rathore, Bhavanath Jha
High and fluctuating salinity is characteristic for coastal salt marshes, which strongly affect the physiology of halophytes consequently resulting in changes in stable isotope distribution. The natural abundance of stable isotopes (δ(13)C and δ(15)N) of the halophyte plant Salicornia brachiata and physico-chemical characteristics of soils were analysed in order to investigate the relationship of stable isotope distribution in different populations in a growing period in the coastal area of Gujarat, India...
November 5, 2017: Isotopes in Environmental and Health Studies
V N Nesterov, I S Nesterkina, O A Rozentsvet, N V Ozolina, R K Salyaev
To study the characteristics of the structure and the functional role of chloroplast membranes of halophytes with different salt tolerance strategy, raft structures were isolated. Lipid analysis data provided evidence for the presence of rafts in the chloroplast membranes. The discovered significant differences in the content of raft-forming lipids in different halophytes suggest a relationship between the functions of rafts and the mechanisms of salt tolerance in plants.
September 2017: Doklady. Biochemistry and Biophysics
Na-Hyun Kim, Jeong-Doo Heo, Jung-Rae Rho, Min Hye Yang, Eun Ju Jeong
Halophyte Limonium tetragonum has recently been of interest in Korea for its nutritional value and salty taste which made it an ideal vegetable. In this study, the potential of L. tetragonum preventing excess weight gain, obesity and the related health problem has been evaluated in vitro and in vivo. The treatment with 100 mg/kg of L. tetragonum EtOAc soluble fraction (EALT) apparently prevented the body weight gain, adipose tissue weight gain, and the increase of triglyceride and total cholesterol level in mice fed a high-fat diet for 8 weeks...
2017: Biological & Pharmaceutical Bulletin
Jürgen Franzaring, Walter Damsohn, Andreas Fangmeier, Sonja Schlosser, Hannes Kurz, Philipp Büttner
Extraction and processing of cassiterite (SnO2) left large tailings with high concentrations of tin, tungsten, molybdenum and lithium. Information on the phytotoxicity of mine waste is important with regard to ecological hazards. Exposure studies help to identify plants useful for the stabilization of waste tips and the phytomining of metals. A greenhouse study was performed using a dilution series of mine waste and four crops, a halophytic and a metallophytic species to derive dose response curves. Based on effective doses for growth reductions, sensitivity increased in the following order: maize > common buckwheat > quinoa > garden bean...
October 20, 2017: International Journal of Phytoremediation
Hidelblandi Farias de Melo, Edivan Rodrigues de Souza, Brivaldo Gomes de Almeida, Maurizio Mulas
Atriplex nummularia is a halophyte widely employed to recover saline soils and was used as a model to evaluate the water potentials in the soil-plant system under drought and salt stresses. Potted plants grown under 70 and 37% of field capacity irrigated with solutions of NaCl and of a mixture of NaCl, KCl, MgCl2 and CaCl2 reproducing six electrical conductivity (EC): 0, 5, 10, 20, 30, and 40 dS m(-1). After 100 days, total water (Ψw, plant) and osmotic (Ψo, plant) potentials at predawn and midday and Ψo, soil, matric potential (Ψm, soil) and Ψw, soil were determined...
October 20, 2017: International Journal of Phytoremediation
Maria Camacho, Susana Redondo-Gomez, Ignacio Rodríguez-Llorente, Manfred Rohde, Cathrin Spröer, Peter Schumann, Hans-Peter Klenk, Maria Del Carmen Montero-Calasanz
A novel, non-motile coccoid, Gram-positive and non-endospore forming bacterium, designated Hv14b(T), was isolated from the rhizosphere of the halophyte Arthrocnemum macrostachyum. It was observed to be catalase positive and oxidase negative and able to hydrolyse starch. MK-8(H2) was identified as the dominant menaquinone and the major cellular fatty acids were anteiso-C15 : 0 and iso-C15 : 0. The polar lipids comprised diphosphatidylglycerol, phosphatidylglycerol and an unidentified glycolipid. The 16S rRNA genes showed the highest 16S rRNA sequence identity with K...
October 16, 2017: International Journal of Systematic and Evolutionary Microbiology
Chikae Iwaoka, Shogo Imada, Takeshi Taniguchi, Sheng Du, Norikazu Yamanaka, Ryunosuke Tateno
Nitrogen (N) is one of the most common limiting nutrients for primary production in terrestrial ecosystems. Soil microbes transform organic N into inorganic N, which is available to plants, but soil microbe activity in drylands is sometimes critically suppressed by environmental factors, such as low soil substrate availability or high salinity. Tamarisk (Tamarix spp.) is a halophytic shrub species that is widely distributed in the drylands of China; it produces litter enriched in nutrients and salts that are thought to increase soil fertility and salinity under its crown...
October 14, 2017: Microbial Ecology
Taiga Nishijima, Megumi Furuhashi, Satomi Sakaoka, Atsushi Morikami, Hironaka Tsukagoshi
Most plants do not tolerate highly saline environments; the development of salt stress tolerance is crucial for improving crop yield. An efficient way of finding genes involved in salt tolerance is to study and use data from halophytes. In this study, we used the Mesembryanthemum crystallinum (ice plant) expression data-set and selected for further study the gene McHKT2, which encodes for the Arabidopsis sodium transporter ortholog AtHKT1. In comparison with the HKT1 amino acid sequences from other plants, McHKT2 has several unique features...
November 2017: Bioscience, Biotechnology, and Biochemistry
Changsong Zou, Aojun Chen, Lihong Xiao, Heike M Muller, Peter Ache, Georg Haberer, Meiling Zhang, Wei Jia, Ping Deng, Ru Huang, Daniel Lang, Feng Li, Dongliang Zhan, Xiangyun Wu, Hui Zhang, Jennifer Bohm, Renyi Liu, Sergey Shabala, Rainer Hedrich, Jian-Kang Zhu, Heng Zhang
Chenopodium quinoa is a halophytic pseudocereal crop that is being cultivated in an ever-growing number of countries. Because quinoa is highly resistant to multiple abiotic stresses and its seed has a better nutritional value than any other major cereals, it is regarded as a future crop to ensure global food security. We generated a high-quality genome draft using an inbred line of the quinoa cultivar Real. The quinoa genome experienced one recent genome duplication about 4.3 million years ago, likely reflecting the genome fusion of two Chenopodium parents, in addition to the γ paleohexaploidization reported for most eudicots...
November 2017: Cell Research
Ling Hong, Jun-Li Liu, Samira Z Midoun, Philip C Miller
The unicellular green alga Dunaliella salina is well adapted to salt stress and contains compounds (including β-carotene and vitamins) with potential commercial value. A large transcriptome database of D. salina during the adjustment, exponential and stationary growth phases was generated using a high throughput sequencing platform. We characterized the metabolic processes in D. salina with a focus on valuable metabolites, with the aim of manipulating D. salina to achieve greater economic value in large-scale production through a bioengineering strategy...
2017: Journal of Zhejiang University. Science. B
Doongar R Chaudhary, Jinhyun Kim, Hojeong Kang
Salt marshes are transitional zone between terrestrial and aquatic ecosystems, occupied mainly by halophytic vegetation which provides numerous ecological services to coastal ecosystem. Halophyte-associated microbial community plays an important role in the adaptation of plants to adverse condition and also affected habitat characteristics. To explore the relationship between halophytes and soil microbial community, we studied the soil enzyme activities, soil microbial community structure, and functional gene abundance in halophytes- (Carex scabrifolia, Phragmites australis, and Suaeda japonica) covered and un-vegetated (mud flat) soils at Suncheon Bay, South Korea...
October 6, 2017: Microbial Ecology
Sylva Prerostova, Petre I Dobrev, Alena Gaudinova, Petr Hosek, Petr Soudek, Vojtech Knirsch, Radomira Vankova
Salt stress responses in salt-sensitive Arabidopsis thaliana (2-150mM NaCl) and the closely related salt-tolerant Thellungiella salsuginea (Eutrema halophila, 150-350mM NaCl) were compared to identify hormonal and transcriptomic changes associated with enhanced stress tolerance. Phytohormone levels, expression of selected genes, membrane stability, and Na(+) and K(+) concentrations were measured in shoot apices, leaves, and roots. Thellungiella exhibited higher salt stress tolerance associated with elevated basal levels of abscisic acid and jasmonic acid, and lower levels of active cytokinins (excluding cis-zeatin) in shoot apices...
November 2017: Plant Science: An International Journal of Experimental Plant Biology
Agata Bartkowiak, Joanna Lemanowicz, Piotr Hulisz
This paper aimed to evaluate the ecological risk posed by the accumulation of heavy metals in the salt-affected soils of the habitat covered by the EU Natura 2000 program in relation to the activity of soil redox enzymes. The research was carried out in the halophyte reserve in Ciechocinek (north-central Poland) which is a very specific habitat as it undergoes a long-term human impact related to both the operation of the medical spa town and the agricultural use of soils in the adjacent areas. The obtained results showed that the content of Zn, Cu, Pb, and Cd in the studied soils exceeded the Polish standards...
September 30, 2017: Environmental Science and Pollution Research International
Ting Pan, Yafen Liu, Xiaomeng Su, Lizhe An, Quan-Sheng Qiu
Populus euphratica, the well-known tree halophyte, tolerates the stress of high levels of salt. We previously showed that the transmembrane domain 11 (TM11) of PeNHX3, a Na(+),K(+)/H(+) antiporter from P. euphratica, was crucial for Na(+) and Li(+) transport in a yeast growth assay. Here, we examined the role of TM11 in catalyzing Na(+) and Li(+) transport in transgenic Arabidopsis. We found that PeNHX3 localized to the tonoplasts in Arabidopsis. Overexpression of PeNHX3 in Arabidopsis improved seedling growth and enhanced salt tolerance and Li(+) detoxification...
September 19, 2017: Journal of Plant Physiology
Lu Chen, Wen-Ling Wang, Teng-Fei Song, Xin Xie, Xue-Wei Ye, Ying Liang, Hao-Cai Huang, Shi-Lun Yan, Xiao-Yuan Lian, Zhi-Zhen Zhang
Tripolinolate A (TLA) is recently identified as a new compound from a halophyte plant Tripolium vulgare and has been shown to have significant in vitro activity against the proliferation of colorectal cancer and glioma cells. This study was designed to further investigate the effects of TLA on the proliferation of human normal cells, and the apoptosis and cell cycle in colorectal cancer cells, and the growth of tumors in the colorectal cancer-bearing animals. The data obtained from this study demonstrated that: 1) TLA had much less cytotoxicity in the human normal cells than the colorectal cancer cells; 2) TLA remarkably induced apoptosis in the human colorectal cancer cells and blocked cell cycle at G2/M phase, and 3) TLA had significant anti-colorectal cancer activity in the tumor-bearing animals...
August 2017: Chinese Journal of Natural Medicines
Miaomiao Cheng, Anan Wang, Caixian Tang
Nitrogen fertilization has been shown to improve Cd uptake by plants but there is little information on the effect of N form. This study examined the effects of N form on Cd bioavailability and phytoextraction in two soils differing in pH. Plants of halophytic species Carpobrotus rossii were grown in an acidic Sodosol [pH (CaCl2) 4.9] and a neutral Vertosol (pH 7.2) spiked with 20 mg kg(-1) Cd as CdCl2. Three N forms, KNO3, (NH4)2SO4 and (NH2)2CO at a rate of 24 mg N kg(-1) were applied at weekly intervals, together with nitrification inhibitor dicyanodiamide...
September 11, 2017: Chemosphere
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