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https://www.readbyqxmd.com/read/28549372/pgpr-strain-paenibacillus-polymyxa-sqr-21-potentially-benefits-watermelon-growth-by-re-shaping-root-protein-expression
#1
Yaoyao E, Jun Yuan, Fang Yang, Lei Wang, Jinghua Ma, Jing Li, Xiaowei Pu, Waseem Raza, Qiwei Huang, Qirong Shen
Paenibacillus polymyxa (SQR-21) is not only a plant growth-promoting rhizobacteria, but also an effective biocontrol agent against Fusarium wilt disease of watermelon. For the better understanding and clarifying the potential mechanisms of SQR-21 to improve watermelon growth and disease resistance, a split-root methodology in hydroponic and LC-MS technology with the label free method was used to analyze the key root proteins involved in watermelon metabolism and disease resistance after the inoculation of SQR-21...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28547891/large-scale-gene-expression-reveals-different-adaptations-of-hyalopterus-persikonus-to-winter-and-summer-host-plants
#2
Na Cui, Peng-Cheng Yang, Kun Guo, Le Kang, Feng Cui
Host alternation, an obligatory seasonal shifting between host plants of distant genetic relationship, has had significant consequences for the diversification and success of the superfamily of aphids. However, the underlying molecular mechanism remains unclear. In this study, the molecular mechanism of host alternation was explored through a large-scale gene expression analysis of the mealy aphid Hyalopterus persikonus on winter and summer host plants. More than four times as many unigenes of the mealy aphid were significantly upregulated on summer host Phragmites australis than on winter host Rosaceae plants...
June 2017: Insect Science
https://www.readbyqxmd.com/read/28542212/proteome-dynamics-of-cold-acclimating-rhododendron-species-contrasting-in-their-freezing-tolerance-and-thermonasty-behavior
#3
Jose V Die, Rajeev Arora, Lisa J Rowland
To gain a better understanding of cold acclimation in rhododendron and in woody perennials in general, we used the 2D-DIGE technique to analyze the rhododendron proteome during the seasonal development of freezing tolerance. We selected two species varying in their cold acclimation ability as well as their thermonasty response (folding of leaves in response to low temperature). Proteins were extracted from leaves of non-acclimated (NA) and cold acclimated (CA) plants of the hardier thermonastic species, R. catawbiense (Cata...
2017: PloS One
https://www.readbyqxmd.com/read/28537731/reaction-of-spring-barley-and-common-radish-on-the-introduction-of-ionic-liquids-containing-asymmetric-cations-to-the-soil
#4
Barbara Pawłowska, Arkadiusz Telesiński, Maciej Płatkowski, Michał Stręk, Martyna Śnioszek, Robert Biczak
The harmful effect of ionic liquids (ILs) on the environment is one of the important elements of scientific research conducted around the world. This study presents the effect of ionic liquids, containing the asymmetric cations benzyltrimethylammonium chloride [BenzTMA][Cl] and benzyltriethylammonium chloride[BenzTEA][Cl], on physiological and biochemical changes in common radish plants and spring barley seedlings. The examined ILs demonstrated low toxicity to higher plants. A compound that exhibiting higher phytotoxicity to these plant species was [BenzTMA][Cl]...
May 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28535420/evolutionary-changes-in-defensive-specialized-metabolism-in-the-genus-hordeum
#5
Naoki Ube, Miho Nishizaka, Tsuyoshi Ichiyanagi, Kotomi Ueno, Shin Taketa, Atsushi Ishihara
Plants have developed defensive specialized metabolites over the course of evolution. In the genus Hordeum, which includes the important cereal crop barley, specialized metabolites such as hordatines, benzoxazinones, and gramine have been identified. Hordeum species are classified into four clades, H, Xu, Xa, and I. The presence or absence of defensive specialized metabolites was analyzed in representative Hordeum species that included all of the four clades. In the H clade, Hordeum vulgare accumulated hordatines but not benzoxazinones, whereas H...
May 20, 2017: Phytochemistry
https://www.readbyqxmd.com/read/28534307/acanthus-ilicifolius-l-a-promising-candidate-for-phytostabilization-of-zinc
#6
A M Shackira, Jos T Puthur, E Nabeesa Salim
The potential of a halophyte species-Acanthus ilicifolius L.-to phytostabilize zinc (Zn) grown under hydroponics culture conditions was critically evaluated in this study. The propagules after treating with ZnSO4 (4 mM) were analysed for the bioaccumulation pattern, translocation rate of Zn to the shoot, effects of Zn accumulation on organic solutes and the antioxidant defence system. It was found that most of the Zn absorbed by the plant was retained in the root (47%) and only a small portion was transported to stem (12%) and leaves (11%)...
June 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28533793/exogenous-supplementation-of-silicon-improved-the-recovery-of-hyperhydric-shoots-in-dianthus-caryophyllus-l-by-stabilizing-the-physiology-and-protein-expression
#7
Prabhakaran Soundararajan, Abinaya Manivannan, Yoon S Cho, Byoung R Jeong
Hyperhydricity is one of the major problems hindering in vitro propagation of Dianthus caryophyllus L. Silicon (Si) is a well-known beneficial element renowned for its stress amelioration properties in plants. This study has demonstrated the physiological and molecular mechanism behind the Si-mediated recovery from hyperhydricity in D. caryophyllus L. 'Green Beauty'. Four weeks old hyperhydric shoots obtained from temporary immersion system were cultured on the Murashige and Skoog medium supplemented with 0 (control), 1...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28531658/co-plantation-of-aquatic-macrophytes-typha-angustifolia-and-paspalum-scrobiculatum-for-effective-treatment-of-textile-industry-effluent
#8
Vishal V Chandanshive, Niraj R Rane, Asif S Tamboli, Avinash R Gholave, Rahul V Khandare, Sanjay P Govindwar
Field treatment of textile industry effluent was carried out in constructed drenches (91.4m×1.2m×0.6m; 65.8m(3)) planted independently with Typha angustifolia, Paspalum scrobiculatum and their co-plantation (consortium-TP). The in situ treatment of effluent by T. angustifolia, P. scrobiculatum and consortium-TP was found to decrease ADMI color value by 62, 59 and 76%, COD by 65, 63 and 70%, BOD by 68, 63 and 75%, TDS by 45, 39 and 57%, and TSS by 35, 31 and 47%, respectively within 96h. Heavy metals such as arsenic, cadmium, chromium and lead were also removed up to 28-77% after phytoremediation...
May 12, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28524115/label-free-quantitative-proteomic-analysis-of-chitosan-oligosaccharide-treated-rice-infected-with-southern-rice-black-streaked-dwarf-virus
#9
Anming Yang, Lu Yu, Zhuo Chen, Shanxue Zhang, Jing Shi, Xiaozhen Zhao, Yuanyou Yang, Deyu Hu, Baoan Song
Southern rice black-streaked dwarf virus (SRBSDV) has spread from thesouth of China to the north of Vietnam in the past few years and severelyinfluenced rice production. Its long incubation period and early symptoms are not evident; thus, controlling it is difficult. Chitosan oligosaccharide (COS) is a green plant immunomodulator. Early studies showed that preventing and controlling SRBSDV have a certain effect and reduce disease infection rate, but its underlying controlling and preventing mechanism is unclear...
May 18, 2017: Viruses
https://www.readbyqxmd.com/read/28523913/expression-and-characterization-of-windmill-palm-tree-trachycarpus-fortunei-peroxidase-by-pichia-pastoris
#10
Boting Wen, Margaret R Baker, Hongwei Zhao, Zongjun Cui, Qing X Li
Currently, commercial plant peroxidases are all native and are isolated from plants such as horseradish and soybean. No recombinant plant peroxidase products have been available on the commercial market. The gene encoding peroxidase was cloned from windmill palm tree leaves. The codon-optimized gene was transformed into Pichia pastoris for expression. The recombinant windmill palm tree peroxidase (rWPTP) expressed by P. pastoris showed high stability under pH 2-10 and temperatures up to 70 °C to many metallic salts and organic solvents...
May 26, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28523010/beneficial-soil-bacterium-pseudomonas-frederiksbergensis-os261-augments-salt-tolerance-and-promotes-red-pepper-plant-growth
#11
Poulami Chatterjee, Sandipan Samaddar, Rangasamy Anandham, Yeongyeong Kang, Kiyoon Kim, Gopal Selvakumar, Tongmin Sa
Soil salinity, being a part of natural ecosystems, is an increasing problem in agricultural soils throughout the world. Pseudomonas frederiksbergensis OS261 has already been proved to be an effective bio-inoculant for enhancing cold stress tolerance in plants, however, its effect on salt stress tolerance is unknown. The main aim of the present study was to elucidate P. frederiksbergensis OS261 mediated salt stress tolerance in red pepper. The plants were exposed to a salt stress using NaCl at the concentrations of 50, 100, and 150 mM after 12 days of transplantation, while plant growth and enzyme activity were estimated 50 days after sowing...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28520776/proteomic-analysis-of-tea-plants-camellia-sinensis-with-purple-young-shoots-during-leaf-development
#12
Qiongqiong Zhou, Zhidan Chen, Jinwook Lee, Xinghui Li, Weijiang Sun
Tea products made from purple leaves are highly preferred by consumers due to the health benefits. This study developed a proteome reference map related to color changes during leaf growth in tea (Camellia sinensis) plant with purple young shoots using two-dimensional electrophoresis (2-DE). Forty-six differentially expressed proteins were detected in the gel and successfully identified by using MALDI-TOF/TOF-MS. The pronounced changes in the proteomic profile between tender purple leaves (TPL) and mature green leaves (MGL) included: 1) the lower activity of proteins associated with CO2 assimilation, energy metabolism and photo flux efficiency and higher content of anthocyanins in TPL than those in MGL may protect tender leaves against photo-damage; 2) the higher abundance of chalcone synthase (CHS), chalcone isomerase (CHI) and flavonol synthase (FLS) likely contributes to the synthesis of anthocyanins, catechins and flavonols in TPL tissues; 3) higher abundance of stress response proteins, such as glutathione S-transferases (GST) and phospholipid hydroperoxide glutathione peroxidase (PHGPx), could enhance the tolerance of TPL tissues to adverse condition in; and 4) the increased abundance of proteins related to protein synthesis, nucleic acids and cell wall proteins should be beneficial for the proliferation and expansion of leaf cell in TPL tissues...
2017: PloS One
https://www.readbyqxmd.com/read/28504266/low-phosphate-activates-stop1-almt1-to-rapidly-inhibit-root-cell-elongation
#13
Coline Balzergue, Thibault Dartevelle, Christian Godon, Edith Laugier, Claudia Meisrimler, Jean-Marie Teulon, Audrey Creff, Marie Bissler, Corinne Brouchoud, Agnès Hagège, Jens Müller, Serge Chiarenza, Hélène Javot, Noëlle Becuwe-Linka, Pascale David, Benjamin Péret, Etienne Delannoy, Marie-Christine Thibaud, Jean Armengaud, Steffen Abel, Jean-Luc Pellequer, Laurent Nussaume, Thierry Desnos
Environmental cues profoundly modulate cell proliferation and cell elongation to inform and direct plant growth and development. External phosphate (Pi) limitation inhibits primary root growth in many plant species. However, the underlying Pi sensory mechanisms are unknown. Here we genetically uncouple two Pi sensing pathways in the root apex of Arabidopsis thaliana. First, the rapid inhibition of cell elongation in the transition zone is controlled by transcription factor STOP1, by its direct target, ALMT1, encoding a malate channel, and by ferroxidase LPR1, which together mediate Fe and peroxidase-dependent cell wall stiffening...
May 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28500894/mercury-induced-oxidative-stress-dna-damage-and-activation-of-antioxidative-system-and-hsp70-induction-in-duckweed-lemna-minor
#14
Tingting Zhang, Qianqian Lu, Chunlei Su, Yaru Yang, Dan Hu, Qinsong Xu
Mercury uptake and its effects on physiology, biochemistry and genomic stability were investigated in Lemna minor after 2 and 6d of exposure to 0-30μM Hg. The accumulation of Hg increased in a concentration- and duration-dependent manner, and was positively correlated with the leaf damage. Oxidative stress after Hg exposure was evidenced in L. minor by a significant decrease in photosynthetic pigments, an increase in malondialdehyde and lipoxygenase activities (total enzyme activity and isoenzymes activity)...
May 10, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28494394/physiological-and-biochemical-changes-attenuate-the-effects-of-drought-on-the-cerrado-species-vatairea-macrocarpa-benth-ducke
#15
Evandro Alves Vieira, Maria das Graças Silva, Camila Fernandes Moro, Valdemir Antônio Laura
Drought is considered the main abiotic stress because it influences the distribution of plant species and limits the productivity of ecosystems. The aim of this study was to evaluate the effects of drought on physiological and biochemical parameters during the initial development of Vatairea macrocarpa, a native cerrado species. Plants were subjected to daily watering (control); suppression of watering during 90 days with field capacity (fc) 50% and 25% and then followed by rewatering. Relative leaf water content (RWC), gas exchange, photosynthetic pigments content, carbohydrate and amino acids content, antioxidant activities and growth were recorded...
April 26, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28494393/alterations-in-growth-oxidative-damage-and-metal-uptake-of-five-aromatic-rice-cultivars-under-lead-toxicity
#16
Umair Ashraf, Saddam Hussain, Shakeel Ahmad Anjum, Farhat Abbas, Mohsin Tanveer, Mehmood Ali Noor, Xiangru Tang
Lead (Pb) affects plant growth and its related physio-biochemical functions negatively. The present study investigated the responses of five different fragrant rice cultivars viz., Meixiangzhan (MXZ-2), Xiangyaxiangzhan (XYXZ), Guixiangzhan (GXZ), Basmati-385 (B-385), and Nongxiang-18 (NX-18) to four different Pb concentrations viz., 0, 400, 800 and 1200 μM. Results depicted that Pb toxicity significantly (P < 0.05) reduced the plant height, tillering ability and biomass accumulation by causing oxidative damage to rice plants; nonetheless, a significant variation was found in the sensitivity of rice cultivars to Pb toxicity...
April 21, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28494299/mycorrhization-protects-betula-pubescens-ehr-from-metal-induced-oxidative-stress-increasing-its-tolerance-to-grow-in-an-industrial-polluted-soil
#17
D Fernández-Fuego, E Keunen, A Cuypers, A Bertrand, A González
In recent years, the use of woody plants in phytoremediation has gained popularity due to their high biomass production and their association with mycorrhizal fungi, which can improve their survival and development rates under stress conditions. In this study, mycorrhized and non-mycorrhized white birch plants (Betula pubescens Ehr.) were grown in control and a metal-polluted industrial soil. After 60days of culture, plant growth and metal accumulation, the content of photosynthetic pigments and oxidative-stress markers, as well as the enzymatic activities and gene expressions of antioxidant enzymes were measured...
April 27, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28491072/thnac13-a-nac-transcription-factor-from-tamarix-hispida-confers-salt-and-osmotic-stress-tolerance-to-transgenic-tamarix-and-arabidopsis
#18
Liuqiang Wang, Zhen Li, Mengzhu Lu, Yucheng Wang
NAC (NAM, ATAF1/2, and CUC2) proteins play critical roles in many plant biological processes and environmental stress. However, NAC proteins from Tamarix hispida have not been functionally characterized. Here, we studied a NAC gene from T. hispida, ThNAC13, in response to salt and osmotic stresses. ThNAC13 is a nuclear protein with a C-terminal transactivation domain. ThNAC13 can bind to NAC recognized sites and calmodulin-binding NAC (CBNAC) binding element. Overexpression of ThNAC13 in Arabidopsis improved seed germination rate and increased root growth and fresh weight gain under salt or osmotic stress...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28491070/ascorbic-acid-a-potential-oxidant-scavenger-and-its-role-in-plant-development-and-abiotic-stress-tolerance
#19
REVIEW
Nudrat A Akram, Fahad Shafiq, Muhammad Ashraf
Over-production of reactive oxygen species (ROS) in plants under stress conditions is a common phenomenon. Plants tend to counter this problem through their ability to synthesize ROS neutralizing substances including non-enzymatic and enzymatic antioxidants. In this context, ascorbic acid (AsA) is one of the universal non-enzymatic antioxidants having substantial potential of not only scavenging ROS, but also modulating a number of fundamental functions in plants both under stress and non-stress conditions...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28491065/osphyb-mediating-novel-regulatory-pathway-for-drought-tolerance-in-rice-root-identified-by-a-global-rna-seq-transcriptome-analysis-of-rice-genes-in-response-to-water-deficiencies
#20
Yo-Han Yoo, Anil K Nalini Chandran, Jong-Chan Park, Yun-Shil Gho, Sang-Won Lee, Gynheung An, Ki-Hong Jung
Water deficiencies are one of the most serious challenges to crop productivity. To improve our understanding of soil moisture stress, we performed RNA-Seq analysis using roots from 4-week-old rice seedlings grown in soil that had been subjected to drought conditions for 2-3 d. In all, 1,098 genes were up-regulated in response to soil moisture stress for 3 d, which causes severe damage in root development after recovery, unlikely that of 2 d. Comparison with previous transcriptome data produced in drought condition indicated that more than 68% of our candidate genes were not previously identified, emphasizing the novelty of our transcriptome analysis for drought response in soil condition...
2017: Frontiers in Plant Science
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