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https://www.readbyqxmd.com/read/28537795/the-influences-of-arbuscular-mycorrhizal-fungus-on-phytostabilization-of-lead-zinc-tailings-using-four-plant-species
#1
Hai-Hong Gu, Zheng Zhou, Yu-Qian Gao, Xue-Tao Yuan, Yan-Jun Ai, Jun-Ying Zhang, Wen-Zhe Zuo, Alicia A Taylor, Shi-Qing Nan, Fu-Ping Li
A greenhouse experiment was conducted to investigate the effects of the arbuscular mycorrhizal fungus Funneliformis mosseae on three parameters: Pb, Zn, Cu and Cd accumulation, translocation and plant growth in perennial ryegrass (Lolium perenne), tall fescue (Festuca arundinacea), showy stonecrop (Hylotelephium spectabile) and Purple Heart (Tradescantia pallida). The purpose of this work is to enhance site-specific phytostabilization of lead/zinc mine tailings using native plant species. The results showed that mycorrhizal fungi inoculation significantly increased plant biomass of F...
August 3, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28534178/effects-of-foliage-litter-of-a-pioneer-shrub-artemisia-halodendron-on-germination-from-the-soil-seedbank-in-a-semi-arid-sandy-grassland-in-china
#2
Yongqing Luo, Xueyong Zhao, Yuqiang Li, Tao Wang
Vegetation recovery during succession is an important process for ecological restoration of the soil, especially in degraded sandy land. However, the driving mechanisms, such as how a pioneer species competes with other species, is uncertain. In China's Horqin Sandy Land, Artemisia halodendron is an important shrub that is common on semi-fixed dunes, where it replaces Agriophyllum squarrosum during succession, and is an important indicator species of the second stage of dune stabilization. However, how it outcompetes other species is still unclear...
May 22, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28533898/reconstructing-a-herbivore-s-diet-using-a-novel-rbcl-dna-mini-barcode-for-plants
#3
David L Erickson, Elizabeth Reed, Padmini Ramachandran, Norman A Bourg, William J McShea, Andrea Ottesen
Next Generation Sequencing and the application of metagenomic analyses can be used to answer questions about animal diet choice and study the consequences of selective foraging by herbivores. The quantification of herbivore diet choice with respect to native versus exotic plant species is particularly relevant given concerns of invasive species establishment and their effects on ecosystems. While increased abundance of white-tailed deer (Odocoileus virginianus) appears to correlate with increased incidence of invasive plant species, data supporting a causal link is scarce...
May 2017: AoB Plants
https://www.readbyqxmd.com/read/28533795/a-kasp-genotyping-method-to-identify-northern-watermilfoil-eurasian-watermilfoil-and-their-interspecific-hybrids
#4
Eric L Patterson, Margaret B Fleming, Kallie C Kessler, Scott J Nissen, Todd A Gaines
The invasive aquatic plant Eurasian watermilfoil (Myriophyllum spicatum L.) can hybridize with the related North American native species northern watermilfoil (M. sibiricum Kom.). Hybrid watermilfoil (M. spicatum × M. sibiricum) populations have higher fitness and reduced sensitivity to some commonly used aquatic herbicides, making management more difficult. There is growing concern that management practices using herbicides in lakes with mixed populations of watermilfoil species may further select for hybrid individuals due to the difference in herbicide sensitivity...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28531837/possible-developments-for-ex-situ-phytoremediation-of-contaminated-sediments-in-tropical-and-subtropical-regions-review
#5
REVIEW
Marco Pittarello, Jader Galba Busato, Paolo Carletti, Leonardo Barros Dobbss
The growing problem of remediation of contaminated sediments dredged from harbor channels needs to be resolved by a cost effective and sustainable technology. Phytoremediation, by ex situ remediation plants, seems to have the potential to replace traditional methods in case of moderately contaminated sediments. On the other side, the need to mix sediments with soil and/or sand to allow an easier establishment of most employed species causes an increase of the volume of the processed substrate up to 30%. Moreover the majority of phytoremediating species are natives of temperate climate belt...
April 22, 2017: Chemosphere
https://www.readbyqxmd.com/read/28529177/senecio-brasiliensis-impairs-eclosion-rate-and-induces-apoptotic-cell-death-in-larvae-of-drosophila-melanogaster
#6
Giulianna Echeverria Macedo, Karen Kich Gomes, Nathane Rosa Rodrigues, Illana Kemmerich Martins, Gabriel da Luz Wallau, Nélson Rodrigues de Carvalho, Litiele Cezar da Cruz, Dennis Guilherme da Costa Silva, Aline Augusti Boligon, Jeferson Luis Franco, Thaís Posser
Senecio brasilienis (Spreng) Less., is a species native from Brazil, popularly known as "maria mole", and known to induce hepatotoxicity due to its high content of Pyrrolizidine alkaloids. Despite its toxicity, this plant is widely used in Brazilian folk medicine. Considering the antagonizing effects described for S. brasiliensis, we describe here molecular markers involved in the toxicity of hydroalcoholic extract from leaves of S. brasiliensis (HESB) in Drosophila melanogaster. Phytochemical analysis of HESB revealed the presence of phenolic acids and flavonoids...
May 18, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/28525657/genetic-diversity-of-native-populations-of-croton-tetradenius-baill-using-issr-markers
#7
C S Almeida-Pereira, A V C Silva, R P Alves, R B Feitosa-Alcantara, M F Arrigoni-Blank, S V Alvares-Carvalho, T S Costa, L A S White, V S Pinto, T S Sampaio, A F Blank
Brazil has about 300 Croton species in different types of vegetation. Croton tetradenius Baill., which is endemic to the Northeast region and predominant in the Caatinga vegetation, stands out among the several species of this genus. Considering the importance of knowing the genetic variability of a species, the objective of this study was to analyze the genetic diversity of the genotypes of natural populations of C. tetradenius in the State of Sergipe, using ISSR molecular markers. Forty individuals were sampled in four natural populations of the State of Sergipe, Brazil...
May 18, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28523913/expression-and-characterization-of-windmill-palm-tree-trachycarpus-fortunei-peroxidase-by-pichia-pastoris
#8
Boting Wen, Margaret R Baker, Hongwei Zhao, Zongjun Cui, Qing Xiao 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, temperature up to 70 C, to many metallic salts and organic solvents...
May 19, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28523616/the-effect-of-multiple-contamination-of-soil-on-lmw-and-mmw-pahs-accumulation-in-the-roots-of-rubus-fruticosus-l-naturally-growing-near-the-copper-mining-and-smelting-complex-bor-east-serbia
#9
Slađana Č Alagić, Vesna P Stankov Jovanović, Violeta D Mitić, Jelena S Nikolić, Goran M Petrović, Snežana B Tošić, Gordana S Stojanović
Samples of roots and spatial soils of native Rubus fruticosus L. were collected from the spots positioned at different distances from the copper smelter and city heating plants in the industrial zone of the town of Bor (Serbia) and subjected to chemical analyses in order to determine the content of several heavy metals, and 15 priority polycyclic aromatic hydrocarbons (PAHs). In this study, the results for 9 low and medium molecular weight PAHs (LMW and MMW PAHs) are represented and processed using the calculation of bio-concentration factors and statistical methods such as hierarchical cluster analysis and Pearson's correlation study with the aim of investigating the plant capabilities for their uptake from the soil and later accumulation into the root tissue, under the hostile circumstances of multiple contamination...
May 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28522548/a-multi-purpose-toolkit-to-enable-advanced-genome-engineering-in-plants
#10
Tomas Cermak, Shaun J Curtin, Javier Gil-Humanes, Radim Čegan, Thomas J Y Kono, Eva Konečná, Joseph J Belanto, Colby G Starker, Jade W Mathre, Rebecca L Greenstein, Daniel F Voytas
We report a comprehensive toolkit that enables targeted, specific modification of monocot and dicot genomes using a variety of genome engineering approaches. Our reagents, based on TALENs and the CRISPR/Cas9 system, are systematized for fast, modular cloning and accommodate diverse regulatory sequences to drive reagent expression. Vectors are optimized to create either single or multiple gene knockouts and large chromosomal deletions. Moreover, integration of geminivirus-based vectors enables precise gene editing through homologous recombination...
May 18, 2017: Plant Cell
https://www.readbyqxmd.com/read/28522546/the-rxlr-motif-of-the-host-targeting-effector-avr3a-of-phytophthora-infestans-is-cleaved-before-secretion
#11
Stephan Wawra, Franziska Trusch, Anja Matena, Kostis Apostolakis, Uwe Linne, Igor Zhukov, Jan Stanek, Wiktor Koźmiński, Ian Davidson, Chris J Secombes, Peter Bayer, Pieter van West
When plant-pathogenic oomycetes infect their hosts, they employ a large arsenal of effector proteins to establish a successful infection. Some effector proteins are secreted and are destined to be translocated and function inside host cells. The largest group of translocated proteins from oomycetes are the RxLR effectors, defined by their conserved N-terminal Arg-Xaa-Leu-Arg (RxLR) motif. However, the precise role of this motif in the host cell translocation process is unclear. Here detailed biochemical studies of the RxLR effector AVR3a from the potato pathogen Phytophthora infestans are presented...
May 18, 2017: Plant Cell
https://www.readbyqxmd.com/read/28518108/identification-of-plant-ice-binding-proteins-through-assessment-of-ice-recrystallization-inhibition-and-isolation-using-ice-affinity-purification
#12
Melissa Bredow, Heather E Tomalty, Virginia K Walker
Ice-binding proteins (IBPs) belong to a family of stress-induced proteins that are synthesized by certain organisms exposed to subzero temperatures. In plants, freeze damage occurs when extracellular ice crystals grow, resulting in the rupture of plasma membranes and possible cell death. Adsorption of IBPs to ice crystals restricts further growth by a process known as ice-recrystallization inhibition (IRI), thereby reducing cellular damage. IBPs also demonstrate the ability to depress the freezing point of a solution below the equilibrium melting point, a property known as thermal hysteresis (TH) activity...
May 5, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28515782/ecotypic-differentiation-under-farmers-selection-molecular-insights-into-the-domestication-of-pachyrhizus-rich-ex-dc-fabaceae-in-the-peruvian-andes
#13
Marc Delêtre, Beatriz Soengas, Prem Jai Vidaurre, Rosa Isela Meneses, Octavio Delgado Vásquez, Isabel Oré Balbín, Monica Santayana, Bettina Heider, Marten Sørensen
Understanding the distribution of crop genetic diversity in relation to environmental factors can give insights into the eco-evolutionary processes involved in plant domestication. Yam beans (Pachyrhizus Rich. ex DC.) are leguminous crops native to South and Central America that are grown for their tuberous roots but are seed-propagated. Using a landscape genetic approach, we examined correlations between environmental factors and phylogeographic patterns of genetic diversity in Pachyrhizus landrace populations...
June 2017: Evolutionary Applications
https://www.readbyqxmd.com/read/28514635/specialization-to-extremely-low-nutrient-soils-limits-the-nutritional-adaptability-of-plant-lineages
#14
G Anthony Verboom, William D Stock, Michael D Cramer
Specialization to extreme selective situations promotes the acquisition of traits whose coadaptive integration may compromise evolutionary flexibility and adaptability. We test this idea in the context of the foliar stoichiometry of plants native to the South African Cape. Whereas foliar concentrations of nitrogen, phosphorus (P), potassium (K), calcium, magnesium, and sodium showed strong phylogenetic signal, as did the foliar ratios of these nutrients to P, the same was not true of the corresponding soil values...
June 2017: American Naturalist
https://www.readbyqxmd.com/read/28513921/chitin-induced-and-chitin-elicitor-receptor-kinase1-cerk1-phosphorylation-dependent-endocytosis-of-arabidopsis-thaliana-lysin-motif-containing-receptor-like-kinase5-lyk5
#15
Jan Erwig, Hassan Ghareeb, Michaela Kopischke, Ronja Hacke, Alexandra Matei, Elena Petutschnig, Volker Lipka
To detect potential pathogens, plants perceive the fungal polysaccharide chitin through receptor complexes containing lysin motif receptor-like kinases (LysM-RLKs). To investigate the ligand-induced spatial dynamics of chitin receptor components, we studied the subcellular behaviour of two Arabidopsis thaliana LysM-RLKs involved in chitin signalling, CHITIN ELICITOR RECEPTOR KINASE1 (CERK1) and LYSIN MOTIF-CONTAINING RECEPTOR-LIKE KINASE5. We performed standard and quantitative confocal laser scanning microscopy on stably transformed A...
May 17, 2017: New Phytologist
https://www.readbyqxmd.com/read/28512466/salinity-stress-does-not-affect-root-uptake-dissemination-and-persistence-of-salmonella-in-sweet-basil-ocimum-basilicum
#16
Nirit Bernstein, Shlomo Sela Saldinger, Nativ Dudai, Elena Gorbatsevich
Crop produce can be contaminated in the field during cultivation by bacterial human pathogens originating from contaminated soil or irrigation water. The bacterial pathogens interact with the plant, can penetrate the plant via the root system and translocate and survive in above-ground tissues. The present study is first to investigate effects of an abiotic stress, salinity, on the interaction of plants with a bacterial human pathogen. The main sources of human bacterial contamination of plants are manures and marginal irrigation waters such as treated or un-treated wastewater...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28512382/occurrence-of-belonolaimus-in-sinaloa-northwestern-mexico-a-new-report-on-distribution-and-host-range
#17
Manuel Mundo-Ocampo, J G Baldwin, T J Pereira, J R Camacho-Baez, A D Armenta-Bojorquez, M Camacho-Haro, J O Becker
The present study reports the occurrence of the genus Belonolaimus in the state of Sinaloa, Mexico, associated with native plants (i.e., Ziziphus amole and Stenocereus alamosensis) in a natural coastal ecosystem. Both morphological and molecular approaches were employed to characterize the Sinaloa population. Notwithstanding of some morphological and morphometric variation between Belonolaimus from Sinaloa and other valid species, the characterization indicates that this population might belong to the Belonolaimus longicaudatus species complex...
March 2017: Journal of Nematology
https://www.readbyqxmd.com/read/28512377/species-delimitation-and-description-of-mesocriconema-nebraskense-n-sp-nematoda-criconematidae-a-morphologically-cryptic-parthenogenetic-species-from-north-american-grasslands
#18
Magdalena Olson, Timothy Harris, Rebecca Higgins, Peter Mullin, Kirsten Powers, Sean Olson, Thomas O Powers
Nematode surveys of North American grasslands conducted from 2010 to 2015 frequently recovered a species of criconematid nematode morphologically resembling Mesocriconema curvatum. These specimens were recovered from remnant native prairies in the central tallgrass ecoregion of North America, and not from surrounding agroecosystems. Historical records indicate that M. curvatum is a cosmopolitan species feeding on a wide range of agronomic and native plants. DNA barcoding indicates North American grasslands contain at least 10 phylogenetically distinct lineages of Mesocriconema that resemble, but are not, M...
March 2017: Journal of Nematology
https://www.readbyqxmd.com/read/28512127/a-structure-derived-snap-trap-mechanism-of-a-multispecific-serpin-from-the-dysbiotic-human-oral-microbiome
#19
Theodoros Goulas, Miroslaw Ksiazek, Irene Garcia-Ferrer, Alicja M Sochaj-Gregorczyk, Irena Waligorska, Marcin Wasylewski, Jan Potempa, F Xavier Gomis-Rüth
Enduring host-microbiome relationships are based on adaptive strategies within a particular ecological niche. Tannerella forsythia is a dysbiotic member of the human oral microbiome that inhabits periodontal pockets and contributes to chronic periodontitis. To counteract endopeptidases from the host or microbial competitors, T. forsythia possesses a serpin-type proteinase inhibitor called miropin. While serpins from animals, plants, and viruses have been widely studied, those from prokaryotes have received only limited attention...
May 16, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28511724/production-of-a-recombinant-swollenin-from-trichoderma-harzianum-in-escherichia-coli-and-its-potential-synergistic-role-in-biomass-degradation
#20
Clelton A Santos, Jaire A Ferreira-Filho, Anthonia O'Donovan, Vijai K Gupta, Maria G Tuohy, Anete P Souza
BACKGROUND: Fungal swollenins (SWOs) constitute a class of accessory proteins that are homologous to canonical plant expansins. Expansins and expansin-related proteins are well known for acting in the deagglomeration of cellulose structure by loosening macrofibrils. Consequently, SWOs can increase the accessibility and efficiency of the other enzymes involved in the saccharification of cellulosic substrates. Thus, SWOs are promising targets for improving the hydrolysis of plant biomass and for use as an additive to enhance the efficiency of an enzyme cocktail designed for the production of biofuels...
May 16, 2017: Microbial Cell Factories
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