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https://www.readbyqxmd.com/read/28717360/ethanol-enhances-high-salinity-stress-tolerance-by-detoxifying-reactive-oxygen-species-in-arabidopsis-thaliana-and-rice
#1
Huong Mai Nguyen, Kaori Sako, Akihiro Matsui, Yuya Suzuki, Mohammad Golam Mostofa, Chien Van Ha, Maho Tanaka, Lam-Son Phan Tran, Yoshiki Habu, Motoaki Seki
High-salinity stress considerably affects plant growth and crop yield. Thus, developing techniques to enhance high-salinity stress tolerance in plants is important. In this study, we revealed that ethanol enhances high-salinity stress tolerance in Arabidopsis thaliana and rice. To elucidate the molecular mechanism underlying the ethanol-induced tolerance, we performed microarray analyses using A. thaliana seedlings. Our data indicated that the expression levels of 1,323 and 1,293 genes were upregulated by ethanol in the presence and absence of NaCl, respectively...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28716419/a-%C3%AE-carotene-desaturase-gene-ibzds-increases-%C3%AE-carotene-and-lutein-contents-and-enhances-salt-tolerance-in-transgenic-sweetpotato
#2
Ruijie Li, Chen Kang, Xuejin Song, Ling Yu, Degao Liu, Shaozhen He, Hong Zhai, Qingchang Liu
ζ-Carotene desaturase (ZDS) is one of the key enzymes in carotenoid biosynthesis pathway. However, the ZDS gene has not been applied to carotenoid improvement of plants. Its roles in tolerance to abiotic stresses have not been reported. In this study, the IbZDS gene was isolated from storage roots of sweetpotato (Ipomoea batatas (L.) Lam.) cv. Nongdafu 14. Its overexpression significantly increased β-carotene and lutein contents and enhanced salt tolerance in transgenic sweetpotato (cv. Kokei No. 14) plants...
September 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28714319/protective-effect-of-teucrium-polium-on-carbon-tetrachloride-induced-genotoxicity-and-oxidative-stress-in-rats
#3
Fatma Rahmouni, Mongi Saoudi, Nahed Amri, Abdelfattah El-Feki, Tarek Rebai, Riadh Badraoui
This study aimed to investigate the protective effects of Teucrium polium (TP) on carbon tetrachloride (CCl4) induced spleen, erythrocyte's oxidative stress, and genotoxicity in rats. TP was found to contain large amounts of polyphenols (150 mg GAE/G of dry plant) and flavonoids (60 mg QE/g of quercetin dry plant). The CCl4 (0.5 ml/kg) treated rats exhibited significant reductions in serum vitamin A (VA), vitamin E (VE) and total antioxidant status (TAS). Thiobarbituric acid reactive substances (TBARS) and conjugated dienes (CD) were significantly high in the CCl4 group compared to controls...
July 16, 2017: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28712076/nickel-stressed-responses-of-rice-in-ni-subcellular-distribution-antioxidant-production-and-osmolyte-accumulation
#4
Muhammad Rizwan, Muhammad Imtiaz, Zhihua Dai, Sajid Mehmood, Muhammad Adeel, Jinchang Liu, Shuxin Tu
Nickel has been found a key pollutant in farmlands of central and south China, and understanding of Ni toxicity in rice is of great significance in safety production of rice and remediation of Ni polluted paddy soils. The present study aimed to investigate the uptake and subcellular distribution of Ni, antioxidant production, and osmolyte accumulation of rice (Oryza sativa L., cv. yangliangyou 6) plants exposed to excessive Ni concentrations to gain an insight into Ni-induced phytotoxicity. Results revealed that exposure of rice seedlings to high Ni concentrations resulted a decline in root and shoot lengths and fresh weight (FW) and dry weight (DW) of rice plants, which are in connection with the depletion of the contents of photosynthetic pigments...
July 15, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28711996/the-physiological-and-metabolic-changes-in-sugar-beet-seedlings-under-different-levels-of-salt-stress
#5
Yuguang Wang, Piergiorgio Stevanato, Lihua Yu, Huijie Zhao, Xuewei Sun, Fei Sun, Jing Li, Gui Geng
Salinity stress is a major limitation to global crop production. Sugar beet, one of the world's leading sugar crops, has stronger salt tolerant characteristics than other crops. To investigate the response to different levels of salt stress, sugar beet was grown hydroponically under 3 (control), 70, 140, 210 and 280 mM NaCl conditions. We found no differences in dry weight of the aerial part and leaf area between 70 mM NaCl and control conditions, although dry weight of the root and whole plant treated with 70 mM NaCl was lower than control seedlings...
July 15, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28710950/citric-acid-assisted-phytoextraction-of-chromium-by-sunflower-morpho-physiological-and-biochemical-alterations-in-plants
#6
Mujahid Farid, Shafaqat Ali, Muhammad Rizwan, Qasim Ali, Farhat Abbas, Syed Asad Hussain Bukhari, Rashid Saeed, Longhua Wu
Soil and water contamination from heavy metals and metalloids is one of the most discussed and burning global issues due to its potential to cause the scarcity of healthy food and safe water. The scientific community is proposing a range of lab and field based physical, chemical and biological solutions to remedy metals and metalloids contaminated soils and water. The present study finds out a possibility of Chromium (Cr) extraction by sunflower from spiked soil under chelating role of citric acid (CA). The sunflower plants were grown under different concentrations of Cr (0, 5, 10 & 20mgkg(-1)) and CA (0, 2...
July 12, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28707323/exogenous-application-of-indole-acetic-acid-alleviates-the-effects-of-supplemental-ultraviolet-b-radiation-in-the-medicinal-plant-withania-somnifera-dunal
#7
S Takshak, S B Agrawal
Supplemental (s)-UV-B radiation has adverse effects on majority of plants. The present study was conducted to evaluate the effects of exogenous application of the growth hormone indole acetic acid (IAA) on various morphological, physiological, and biochemical characteristics of Withania somnifera, an indigenous medicinal plant, subjected to s-UV-B. The s-UV-B treated plants received ambient+3.6 kJm(-2) day(-1) biologically effective UV-B and IAA was applied at two doses (200 ppm and 400 ppm) to s-UV-B exposed plants...
July 14, 2017: Plant Biology
https://www.readbyqxmd.com/read/28706328/trypsin-inhibitors-demonstrate-antioxidant-activities-inhibit-a549-cell-proliferation-and-increase-activities-of-reactive-oxygen-species-scavenging-enzymes
#8
Tooba Naz Shamsi, Romana Parveen, Sadaf Fatima
OBJECTIVES: Protease inhibitors are one of the most promising and investigated subjects for their role in pharmacognostical and pharmacological studies. This study aimed to investigate antineoplastic and antioxidant activity of trypsin inhibitors (TIs) isolated from three plant sources and their inhibitory role in the cell line. MATERIALS AND METHODOLOGY: TIs were obtained from different plant sources. Antineoplastic potential on adenocarcinoma human alveolar basal epithelial cell line (A549) and normal Human Embryonic Kidney (HEK) was determined using MTT assay...
March 2017: Indian Journal of Pharmacology
https://www.readbyqxmd.com/read/28704693/investigation-of-arsenic-accumulation-and-biochemical-response-of-in-vitro-developed-vetiveria-zizanoides-plants
#9
Shraddha Singh, Suvarna Sounderajan, Kiran Kumar, D P Fulzele
Vetiver grass (Vetiveria zizanoides L. Nash) is found to be a suitable candidate for the phytoremediation of heavy metals. An investigation of arsenic (As) accumulation, translocation and tolerance was conducted in V. zizanoides plantlets upon exposure to different concentrations of arsenic (10, 50, 100 and 200µM) for 7 and 14 d. V. zizanoides plants were found effective in remediation of As, maximum being at 200µM after 14 d of exposure. The results of TBARS and photosynthetic pigments demonstrated that plants did not experience significant toxicity at all the concentrations of As after 7 days, however an increase in their level was found after 14 d...
July 10, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28701871/changes-in-element-accumulation-phenolic-metabolism-and-antioxidative-enzyme-activities-in-the-red-skin-roots-of-panax-ginseng
#10
Ying Zhou, Zhenming Yang, Lingling Gao, Wen Liu, Rongkun Liu, Junting Zhao, Jiangfeng You
BACKGROUND: Red-skin root disease has seriously decreased the quality and production of Panax ginseng (ginseng). METHODS: To explore the disease's origin, comparative analysis was performed in different parts of the plant, particularly the epidermis, cortex, and/or fibrous roots of 5-yr-old healthy and diseased red-skin ginseng. The inorganic element composition, phenolic compound concentration, reactive oxidation system, antioxidant concentrations such as ascorbate and glutathione, activities of enzymes related to phenolic metabolism and oxidation, and antioxidative system particularly the ascorbate-glutathione cycle were examined using conventional methods...
July 2017: Journal of Ginseng Research
https://www.readbyqxmd.com/read/28699781/application-of-bacillus-megaterium-mcr-8-improved-phytoextraction-and-stress-alleviation-of-nickel-in-vinca-rosea
#11
Waheed Ullah Khan, Sajid Rashid Ahmad, Nasim Ahmad Yasin, Aamir Ali, Aqeel Ahmad, Waheed Akram
The current research was performed to evaluate the effect of Bacillus megaterium MCR-8 on mitigation of nickel (Ni) stress in Vinca rosea grown on Ni-contaminated soil (50, 100, and 200 mg Ni kg(-1) soil). The treated plants exhibited reduced growth, biomass, gas exchange capacity, and chlorophyll (Chl) content under Ni stress. The inoculated plants growing in Ni-contaminated media exhibited relatively higher growth, total soluble protein, and proline contents. Similarly, bacterial inoculation improved the activity of antioxidant enzymes including superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), and ascorbate peroxidase (APX) under Ni stress...
September 2, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28699026/aminolevulinic-acid-and-nitric-oxide-regulate-oxidative-defense-and-secondary-metabolisms-in-canola-brassica-napus-l-under-drought-stress
#12
Nudrat Aisha Akram, Majid Iqbal, Atta Muhammad, Muhammad Ashraf, Fahad Al-Qurainy, Sidra Shafiq
To minimize the damaging effects of stresses, plant growth regulators (PGRs) are widely used to sustain the plant life under stress-prone environments. So, a study was carried out to evaluate the response of two canola (Brassica napus L.) cultivars, Dunkeld and Cyclone, to foliar-applied two potential PGRs, nitric oxide (NO) and 5-aminolevulinic acid, under water deficit conditions. In this study, the levels of NO and ALA used were 0.02 and 0.895 mM, respectively. Plants of both canola cultivars were subjected to control (100% field capacity) and water deficit (60% field capacity)...
July 12, 2017: Protoplasma
https://www.readbyqxmd.com/read/28686889/serpentine-endophytic-bacterium-pseudomonas-azotoformans-ass1-accelerates-phytoremediation-of-soil-metals-under-drought-stress
#13
Ying Ma, Mani Rajkumar, António Moreno, Chang Zhang, Helena Freitas
This study evaluates the potential of serpentine endophytic bacterium to foster phytoremediation efficiency of Trifolium arvense grown on multi-metal (Cu, Zn and Ni) contaminated soils under drought stress. A drought resistant endophytic bacterial strain ASS1 isolated from the leaves of Alyssum serpyllifolium grown in serpentine soils was identified as Pseudomonas azotoformans based on biochemical tests and partial 16S rRNA gene sequencing. P. azotoformans ASS1 possessed abiotic stress resistance (heavy metals, drought, salinity, antibiotics and extreme temperature) and plant growth promoting (PGP) properties (phosphate solubilization, nitrogen fixation, production of 1-aminocyclopropane-1-carboxylate deaminase, siderophore and ammonia)...
July 3, 2017: Chemosphere
https://www.readbyqxmd.com/read/28686465/characterization-and-primary-functional-analysis-of-a-bamboo-zep-gene-from-phyllostachys-edulis
#14
Yongfeng Lou, Huayu Sun, Lichao Li, Hansheng Zhao, Zhimin Gao
Zeaxanthin epoxidase (ZEP) plays important roles in plant response to various environmental stresses by involving in abscisic acid (ABA) biosynthesis and xanthophyll cycle. A full-length cDNA of PeZEP was isolated from moso bamboo (Phyllostachys edulis), which comprised of a 138-bp 5'-untranslated region (UTR), a 381-bp 3'-UTR, and a 2013-bp open reading frame (ORF) encoding a putative protein of 670 amino acids. PeZEP was mainly expressed in leaf blades and leaf sheaths, and less in roots and culms. The transcript level of PeZEP in bamboo leaf was elevated with the increasing light intensity...
July 7, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28685360/deciphering-the-physiological-and-molecular-mechanisms-for-copper-tolerance-in-autotetraploid-arabidopsis
#15
Mingjuan Li, Guoyun Xu, Xinjie Xia, Manling Wang, Xuming Yin, Bin Zhang, Xin Zhang, Yanchun Cui
Autotetraploid Arabidopsis line esd and 4COL exhibit enhanced tolerance to Cu stress by enhancing activation of antioxidative defenses, altering expression of genes related to Cu transport, chelation, and ABA-responsive. Autopolyploidy is ubiquitous among angiosperms and often results in better adaptation to stress conditions. Although copper (Cu) is an essential trace element, excess amounts can inhibit plant growth and even result in death. Here, we report that autotetraploid Arabidopsis thaliana esd and 4COL exhibit higher tolerance to Cu stress...
July 6, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28684847/chrysanthemum-wrky-gene-dgwrky5-enhances-tolerance-to-salt-stress-in-transgenic-chrysanthemum
#16
Qian-Yu Liang, Yin-Huan Wu, Ke Wang, Zhen-Yu Bai, Qing-Lin Liu, Yuan-Zhi Pan, Lei Zhang, Bei-Bei Jiang
WRKY transcription factors play important roles in plant growth development, resistance and substance metabolism regulation. However, the exact function of the response to salt stress in plants with specific WRKY transcription factors remains unclear. In this research, we isolated a new WRKY transcription factor DgWRKY5 from chrysanthemum. DgWRKY5 contains two WRKY domains of WKKYGQK and two C2H2 zinc fingers. The expression of DgWRKY5 in chrysanthemum was up-regulated under various treatments. Meanwhile, we observed higher expression levels in the leaves contrasted with other tissues...
July 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28682766/molecular-characterization-and-functional-analysis-of-a-glutathione-peroxidase-gene-from-aphelenchoides-besseyi-nematoda-aphelenchoididae
#17
Bu-Yong Wang, Rong-Rong Wen, Ling Ma
Aphelenchoides besseyi, the nematode agent of rice tip white disease, causes huge economic losses in almost all the rice-growing regions of the world. Glutathione peroxidase (GPx), an esophageal glands secretion protein, plays important roles in the parasitism, immune evasion, reproduction and pathogenesis of many plant-parasitic nematodes (PPNs). Therefore, GPx is a promising target for control A. besseyi. Here, the full-length sequence of the GPx gene from A. besseyi (AbGPx1) was cloned using the rapid amplification of cDNA ends method...
September 26, 2017: Acta Parasitologica
https://www.readbyqxmd.com/read/28677319/effect-of-the-polyphenol-rich-ethyl-acetate-fraction-from-the-leaves-of-lycium-chinense-miller-on-oxidative-stress-dyslipidemia-and-diabetes-mellitus-in-streptozotocin-nicotinamide-induced-diabetic-rats
#18
Opeyemi J Olatunji, Hongxia Chen, Yifeng Zhou
Lycium chinense Miller, popularly known as boxthorn, is a plant that is traditionally used for treating night sweat, cough, inflammation and diabetes mellitus. However, the leaves have received little or no attention despite their potentials as a potent therapeutic agent. This study was aimed at investigating the hypoglycemic and hypolipidemic effects of the polyphenols-rich ethyl acetate fraction from the leaves of Lycium chinense Miller on streptozotocin-nicotinamide induced diabetic rats. The ethyl acetate fraction (LFE) was selected and orally gavaged at 100, 200 and 400 mg/kg dose to streptozotocin (STZ)-nicotinamide induced diabetic rats...
July 4, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28675318/immunomodulatory-and-antioxidant-protective-effect-of-sarcocornia-perennis-l-swampfire-in-lead-intoxicated-rat
#19
Manel Gargouri, Houda Hamed, Amel Akrouti, Christian Magné, Riadh Ksouri, Abdelfattah El Feki
Lead (Pb) is a very toxic metal present in the environment, causing disturbances of several functions. Preventive or curative effects of halophytic plants against these disorders may be a promising and safe therapeutic strategy. Thus, this study was designed to evaluate in vivo immunomodulatory and antioxidant effects of Sarcocornia perennis extract (Sp) against lead toxicity in rats. Groups of six animals each were treated with plant extract (via food), 6 g/L lead acetate (via drinking water) or a combination of both...
July 4, 2017: Toxicology Mechanisms and Methods
https://www.readbyqxmd.com/read/28674552/exogenous-silicon-attenuates-cadmium-induced-oxidative-stress-in-brassica-napus-l-by-modulating-asa-gsh-pathway-and-glyoxalase-system
#20
Mirza Hasanuzzaman, Kamrun Nahar, Taufika Islam Anee, Masayuki Fujita
Cadmium (Cd) brings a devastating health hazard to human being as a serious consequence of agricultural and environmental contamination. We demonstrated the protective effect of silicon (Si) on cadmium (Cd)-stressed rapeseed (Brassica napus L. cv. BINA Sharisha 3) plants through regulation of antioxidant defense and glyoxalase systems. Twelve-day-old seedlings were exposed to Cd stress (0.5 and 1.0 mM CdCl2) separately and in combination with Si (SiO2, 1.0 mM) for 2 days. Cadmium toxicity was evident by an obvious oxidative stress through sharp increases in H2O2 content and lipid peroxidation (malondialdehyde, MDA content), and visible sign of superoxide and H2O2...
2017: Frontiers in Plant Science
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