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Phosphate nutrition plant

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https://www.readbyqxmd.com/read/28330134/phytases-from-enterobacter-and-serratia-species-with-desirable-characteristics-for-food-and-feed-applications
#1
Harpreet Kaur Kalsi, Rajveer Singh, Harcharan Singh Dhaliwal, Vinod Kumar
Phytases are enzymes of great industrial importance with wide range of applications in animal and human nutrition. These catalyze the hydrolysis of phosphomonoester bonds in phytate, thereby releasing lower forms of myo-inositol phosphates and inorganic phosphate. Addition of phytase to plant-based foods can improve its nutritional value and increase mineral bioavailability by decreasing nutritional effect of phytate. In the present investigation, 43 phytase positive bacteria on PSM plates were isolated from different sources and characterized for phytase activity...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28318693/the-influence-of-dual-substrate-layer-extensive-green-roofs-on-rainwater-runoff-quantity-and-quality
#2
Xiaoou Wang, Yimei Tian, Xinhua Zhao
This study investigates the ability of dual-substrate-layer extensive green roofs to retain rainwater and reduce pollutant leaching. The substrates in dual-substrate-layer green roofs consist of an upper organic nutrition layer for plant growth and a lower inorganic adsorption layer for water retention and pollutant reduction. One traditional single-substrate-layer extensive green roof was built for comparison with dual-substrate-layer green roofs. During the experimental period, dual-substrate-layer green roofs supported better natural vegetation growth, with coverage exceeding 90%, while the coverage in single-substrate-layer green roof was over 80%...
March 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28297714/root-microbiota-drive-direct-integration-of-phosphate-stress-and-immunity
#3
Gabriel Castrillo, Paulo José Pereira Lima Teixeira, Sur Herrera Paredes, Theresa F Law, Laura de Lorenzo, Meghan E Feltcher, Omri M Finkel, Natalie W Breakfield, Piotr Mieczkowski, Corbin D Jones, Javier Paz-Ares, Jeffery L Dangl
Plants live in biogeochemically diverse soils with diverse microbiota. Plant organs associate intimately with a subset of these microbes, and the structure of the microbial community can be altered by soil nutrient content. Plant-associated microbes can compete with the plant and with each other for nutrients, but may also carry traits that increase the productivity of the plant. It is unknown how the plant immune system coordinates microbial recognition with nutritional cues during microbiome assembly. Here we establish that a genetic network controlling the phosphate stress response influences the structure of the root microbiome community, even under non-stress phosphate conditions...
March 23, 2017: Nature
https://www.readbyqxmd.com/read/28242361/the-dietary-replacement-of-marine-ingredients-by-terrestrial-animal-and-plant-alternatives-modulates-the-antiviral-immune-response-of-atlantic-salmon-salmo-salar
#4
Albert Caballero-Solares, Jennifer R Hall, Xi Xue, Khalil Eslamloo, Richard G Taylor, Christopher C Parrish, Matthew L Rise
The effects of replacing marine ingredients by terrestrial ingredients on the health of Atlantic salmon (Salmo salar) are poorly understood. During a 14-week trial, Atlantic salmon fed a fish meal-fish oil based diet (MAR) showed similar growth performance to others fed a plant protein/vegetable oil based diet (VEG), whereas poorer performance was observed in those fed an animal by-product meal/vegetable oil based diet (ABP). At the end of the trial, salmon were injected with either phosphate-buffered saline (PBS) or the viral mimic polyriboinosinic polyribocytidylic acid (pIC) and sampled for head kidney RNA after 24 h...
February 24, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28222153/dissecting-nutrient-related-co-expression-networks-in-phosphate-starved-poplars
#5
Mareike Kavka, Andrea Polle
Phosphorus (P) is an essential plant nutrient, but its availability is often limited in soil. Here, we studied changes in the transcriptome and in nutrient element concentrations in leaves and roots of poplars (Populus × canescens) in response to P deficiency. P starvation resulted in decreased concentrations of S and major cations (K, Mg, Ca), in increased concentrations of N, Zn and Al, while C, Fe and Mn were only little affected. In roots and leaves >4,000 and >9,000 genes were differently expressed upon P starvation...
2017: PloS One
https://www.readbyqxmd.com/read/28187398/phosphorus-deficiency-modifies-as-translocation-in-the-halophyte-plant-species-atriplex-atacamensis
#6
Delphine Vromman, Juan-Pablo Martínez, Stanley Lutts
Most arsenic in surface soil and water exists primarily in its oxidized form, as arsenate (As(V); AsO4(3-)), which is an analog of phosphate (PO4(3-)). Arsenate can be taken up by phosphate transporters. Atriplex atacamensis Phil. is native to northern Chile (Atacama Desert), and this species can cope with high As concentrations and low P availability in its natural environment. To determine the impact of P on As accumulation and tolerance in A. atacamensis, the plants were cultivated in a hydroponic system under four treatments: no As(V) addition with 323µM phosphate (control); 1000µM As(V) addition with 323µM phosphate; no As(V) and no phosphate; 1000µM As(V) addition and no phosphate...
February 7, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28174082/%C3%AE-propeller-phytases-diversity-catalytic-attributes-current-developments-and-potential-biotechnological-applications
#7
REVIEW
Vinod Kumar, Ajar Nath Yadav, Priyanka Verma, Punesh Sangwan, Abhishake Saxena, Krishan Kumar, Bijender Singh
Phytases are phosphatases which stepwise remove phosphates from phytic acid or its salts. β-Propeller phytase (BPPhy) belongs to a special class of microbial phytases that is regarded as most diverse, isolated and characterized from different microbes, mainly from Bacillus spp. BPPhy class is unique for its Ca(2+)-dependent catalytic activity, strict substrate specificity, active at neutral to alkaline pH and high thermostability. Numerous sequence and structure based studies have revealed unique attributes and catalytic properties of this class, as compared to other classes of phytases...
May 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28148744/a-phosphorus-threshold-for-mycoheterotrophic-plants-in-tropical-forests
#8
Merlin Sheldrake, Nicholas P Rosenstock, Daniel Revillini, Pål Axel Olsson, S Joseph Wright, Benjamin L Turner
The majority of terrestrial plants associate with arbuscular mycorrhizal (AM) fungi, which typically facilitate the uptake of limiting mineral nutrients by plants in exchange for plant carbon. However, hundreds of non-photosynthetic plant species-mycoheterotrophs-depend entirely on AM fungi for carbon as well as mineral nutrition. Mycoheterotrophs can provide insight into the operation and regulation of AM fungal relationships, but little is known about the factors, fungal or otherwise, that affect mycoheterotroph abundance and distribution...
February 8, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28108919/modification-of-the-137-cs-90-sr-and-60-co-transfer-to-wheat-plantlets-by-nh4-fertilizers
#9
J Guillén, G Muñoz-Muñoz, A Baeza, A Salas, N Mocanu
Inorganic fertilizers are used as agricultural countermeasures intended to inhibit the soil to plant transfer of radionuclides after a radioactive fallout. Two NH4(+) fertilizers, diammonium phosphate (DAP) and NPK, were applied to soil contaminated with a mixture of radionuclides to analyze whether they modify the transfer of (137)Cs, (90)Sr, and (60)Co and stable elements (K, Na, Ca, and Mg) to wheat plantlets grown under controlled laboratory conditions. DAP introduced NH4(+) in the soil, which can increase (137)Cs transfer, while NPK also introduced K(+), which can decrease it...
January 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28105944/gene-expression-profiling-of-flax-linum-usitatissimum-l-under-edaphic-stress
#10
Alexey A Dmitriev, Anna V Kudryavtseva, George S Krasnov, Nadezhda V Koroban, Anna S Speranskaya, Anastasia A Krinitsina, Maxim S Belenikin, Anastasiya V Snezhkina, Asiya F Sadritdinova, Natalya V Kishlyan, Tatiana A Rozhmina, Olga Yu Yurkevich, Olga V Muravenko, Nadezhda L Bolsheva, Nataliya V Melnikova
BACKGROUND: Cultivated flax (Linum usitatissimum L.) is widely used for production of textile, food, chemical and pharmaceutical products. However, various stresses decrease flax production. Search for genes, which are involved in stress response, is necessary for breeding of adaptive cultivars. Imbalanced concentration of nutrient elements in soil decrease flax yields and also results in heritable changes in some flax lines. The appearance of Linum Insertion Sequence 1 (LIS-1) is the most studied modification...
November 16, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/28070736/genome-wide-analysis-of-mirnas-and-tasi-rnas-in-zea-mays-in-response-to-phosphate-deficiency
#11
Saurabh Gupta, Manju Kumari, Himansu Kumar, Pritish Kumar Varadwaj
Globally important cereal crop maize provides important nutritions and starch in dietary foods. Low phosphate (LPi) availability in the soil frequently limits the maize quality and yield across the world. Small non-coding RNAs (Snc-RNAs) play crucial roles in growth and adaptation of plants to the environment. Snc-RNAs like microRNAs (miRs) and trans-acting small interfering RNAs (Tasi-Rs) play important functions in posttranscriptional regulation of gene expression, which controls plant development, reproduction, and biotic/abiotic stress responses...
January 9, 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/27992519/site-dependent-differences-in-dna-methylation-and-their-impact-on-plant-establishment-and-phosphorus-nutrition-in-populus-trichocarpa
#12
Brigitte Schönberger, Xiaochao Chen, Svenja Mager, Uwe Ludewig
The propagation via clonal stem cuttings is a frequent practice in tree plantations. Despite their clonal origin, the trees establish differently according to weather, temperature and nutrient availability, as well as the presence of various stresses. Here, clonal Populus trichocarpa (cv. Muhle Larson) cuttings from different sites were transferred into a common, fully nutrient supplied environment. Despite identical underlying genetics, stem cuttings derived from sites with lower phosphorus availability established worse, independent of phosphorus (P) level after transplantation...
2016: PloS One
https://www.readbyqxmd.com/read/27990026/assessment-of-bioavailable-organic-phosphorus-in-tropical-forest-soils-by-organic-acid-extraction-and-phosphatase-hydrolysis
#13
Tegan Darch, Martin S A Blackwell, David Chadwick, Philip M Haygarth, Jane M B Hawkins, Benjamin L Turner
Soil organic phosphorus contributes to the nutrition of tropical trees, but is not accounted for in standard soil phosphorus tests. Plants and microbes can release organic anions to solubilize organic phosphorus from soil surfaces, and synthesize phosphatases to release inorganic phosphate from the solubilized compounds. We developed a procedure to estimate bioavailable organic phosphorus in tropical forest soils by simulating the secretion processes of organic acids and phosphatases. Five lowland tropical forest soils with contrasting properties (pH 4...
December 15, 2016: Geoderma
https://www.readbyqxmd.com/read/27900695/function-based-metagenomic-library-screening-and-heterologous-expression-strategy-for-genes-encoding-phosphatase-activity
#14
Genis A Castillo Villamizar, Heiko Nacke, Rolf Daniel
The release of phosphate from inorganic and organic phosphorus compounds can be mediated enzymatically. Phosphate-releasing enzymes, comprising acid and alkaline phosphatases, are recognized as useful biocatalysts in applications such as plant and animal nutrition, bioremediation and diagnostic analysis. Metagenomic approaches provide access to novel phosphatase-encoding genes. Here, we describe a function-based screening approach for rapid identification of genes conferring phosphatase activity from small-insert and large-insert metagenomic libraries derived from various environments...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27812010/membrane-glycerolipidome-of-soybean-root-hairs-and-its-response-to-nitrogen-and-phosphate-availability
#15
Fang Wei, Brian Fanella, Liang Guo, Xuemin Wang
Root hairs are tubular extensions of specific root epidermal cells important in plant nutrition and water absorption. To determine membrane glycerolipids in root hairs and roots may differ, as well as their respective response to nutrient availability, this study analyzed the membrane glycerolipid species in soybean root hairs and in roots stripped of root hairs, and their response to nitrogen (N) and phosphate (Pi) supplementation. The ratio of phospholipids to galactolipids was 1.5 fold higher in root hairs than in stripped roots...
November 4, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27803186/metabolism-of-toxic-sugars-by-strains-of-the-bee-gut-symbiont-gilliamella-apicola
#16
Hao Zheng, Alex Nishida, Waldan K Kwong, Hauke Koch, Philipp Engel, Margaret I Steele, Nancy A Moran
Social bees collect carbohydrate-rich food to support their colonies, and yet, certain carbohydrates present in their diet or produced through the breakdown of pollen are toxic to bees. The gut microbiota of social bees is dominated by a few core bacterial species, including the Gram-negative species Gilliamella apicola We isolated 42 strains of G. apicola from guts of honey bees and bumble bees and sequenced their genomes. All of the G. apicola strains share high 16S rRNA gene similarity, but they vary extensively in gene repertoires related to carbohydrate metabolism...
November 1, 2016: MBio
https://www.readbyqxmd.com/read/27754463/an-overview-of-plant-phenolic-compounds-and-their-importance-in-human-nutrition-and-management-of-type-2-diabetes
#17
REVIEW
Derong Lin, Mengshi Xiao, Jingjing Zhao, Zhuohao Li, Baoshan Xing, Xindan Li, Maozhu Kong, Liangyu Li, Qing Zhang, Yaowen Liu, Hong Chen, Wen Qin, Hejun Wu, Saiyan Chen
In this paper, the biosynthesis process of phenolic compounds in plants is summarized, which include the shikimate, pentose phosphate and phenylpropanoid pathways. Plant phenolic compounds can act as antioxidants, structural polymers (lignin), attractants (flavonoids and carotenoids), UV screens (flavonoids), signal compounds (salicylic acid, flavonoids) and defense response chemicals (tannins, phytoalexins). From a human physiological standpoint, phenolic compounds are vital in defense responses, such as anti-aging, anti-inflammatory, antioxidant and anti-proliferative activities...
October 15, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27743400/the-host-plant-pinus-pinaster-exerts-specific-effects-on-phosphate-efflux-and-polyphosphate-metabolism-of-the-ectomycorrhizal-fungus-hebeloma-cylindrosporum-a-radiotracer-cytological-staining-and-31-p-nmr-spectroscopy-study
#18
Margarita Torres-Aquino, Adeline Becquer, Christine Le Guernevé, Julien Louche, Laurie K Amenc, Siobhan Staunton, Hervé Quiquampoix, Claude Plassard
Ectomycorrhizal (ECM) association can improve plant phosphorus (P) nutrition. Polyphosphates (polyP) synthesized in distant fungal cells after P uptake may contribute to P supply from the fungus to the host plant if they are hydrolyzed to phosphate in ECM roots then transferred to the host plant when required. In this study, we addressed this hypothesis for the ECM fungus Hebeloma cylindrosporum grown in vitro and incubated without plant or with host (Pinus pinaster) and non-host (Zea mays) plants, using an experimental system simulating the symbiotic interface...
October 14, 2016: Plant, Cell & Environment
https://www.readbyqxmd.com/read/27537548/organic-wheat-farming-improves-grain-zinc-concentration
#19
Julian Helfenstein, Isabel Müller, Roman Grüter, Gurbir Bhullar, Lokendra Mandloi, Andreas Papritz, Michael Siegrist, Rainer Schulin, Emmanuel Frossard
Zinc (Zn) nutrition is of key relevance in India, as a large fraction of the population suffers from Zn malnutrition and many soils contain little plant available Zn. In this study we compared organic and conventional wheat cropping systems with respect to DTPA (diethylene triamine pentaacetic acid)-extractable Zn as a proxy for plant available Zn, yield, and grain Zn concentration. We analyzed soil and wheat grain samples from 30 organic and 30 conventional farms in Madhya Pradesh (central India), and conducted farmer interviews to elucidate sociological and management variables...
2016: PloS One
https://www.readbyqxmd.com/read/27514454/take-a-trip-through-the-plant-and-fungal-transportome-of-mycorrhiza
#20
Kevin Garcia, Joan Doidy, Sabine D Zimmermann, Daniel Wipf, Pierre-Emmanuel Courty
Soil nutrient acquisition and exchanges through symbiotic plant-fungus interactions in the rhizosphere are key features for the current agricultural and environmental challenges. Improved crop yield and plant mineral nutrition through a fungal symbiont has been widely described. In return, the host plant supplies carbon substrates to its fungal partner. We review here recent progress on molecular players of membrane transport involved in nutritional exchanges between mycorrhizal plants and fungi. We cover the transportome, from the transport proteins involved in sugar fluxes from plants towards fungi, to the uptake from the soil and exchange of nitrogen, phosphate, potassium, sulfate, and water...
August 8, 2016: Trends in Plant Science
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