1,036,979 results match your criteria Plant physiology and biochemistry : PPB / Societe francaise de physiologie vegetale[Journal]


Prediction of organic contaminant uptake by plants: Modified partition-limited model based on a sequential ultrasonic extraction procedure.

Environ Pollut 2018 Nov 30;246:124-130. Epub 2018 Nov 30.

Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang 310058, China. Electronic address:

Predicting the translocation of organic contaminants to plants is crucial to ensure the quality of agricultural goods and assess the risk of human exposure through the food web. In this study, the performance of a modified plant uptake model was evaluated considering a number of chemicals, such as polycyclic aromatic hydrocarbons (PAHs), organochlorine pesticides (OCPs) and polybrominated diphenyl ethers (PBDEs), with a range of physicochemical properties; different plant species (Ipomoea aquatica Forsk (swamp morning glory), Chrysanthemum coronarium L. (crown daisy), Zea mays L. Read More

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November 2018
2 Reads

Phytotoxicity of individual and binary mixtures of rare earth elements (Y, La, and Ce) in relation to bioavailability.

Environ Pollut 2018 Dec 4;246:114-121. Epub 2018 Dec 4.

School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China.

Rare earth elements (REEs) are typically present as mixtures in the environment, but a quantitative understanding of mixture toxicity and interactions of REEs is still lacking. Here, we examined the toxicity to wheat (Triticum aestivum L.) of Y, La, and Ce when applied individually and in combination. Read More

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December 2018
1 Read

The presence of the low molecular mass carbonic anhydrase in photosystem II of C3 higher plants.

J Plant Physiol 2018 Nov 20;232:94-99. Epub 2018 Nov 20.

Institute of Basic Biological Problems of Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia.

The carrier of carbonic anhydrase (CA) activity was detected in gel among low molecular mass proteins from pea, spinach and Arabidopsis, after nondenaturing electrophoresis in PAAG of the dodecyl-β-d-maltoside treated PSII membranes (the fragments of thylakoid membrane containing PSII complexes). The elimination of Mn-stabilizing protein PsbO by treatment of PSII membranes with salts, did not lead to a decrease in CA activity observed in the gel although it reduced the amount of this protein down to 25% compared to the original sample. The isolated protein PsbO did not demonstrated CA activity. Read More

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November 2018

Root colonization by Pseudomonas chlororaphis primes tomato (Lycopersicum esculentum) plants for enhanced tolerance to water stress.

J Plant Physiol 2018 Nov 16;232:82-93. Epub 2018 Nov 16.

National Research Council of Italy - Institute for Sustainable Plant Protection (CNR-IPSP), Viale P.A. Mattioli 25, 10125 Torino, Italy.

Previous research demonstrated that Pseudomonas chlororaphis subsp. aureofaciens strain M71, a plant growth promoting bacterium (PGPB), exerts beneficial effects on plant metabolism and primes tolerance mechanisms against biotic stresses in tomatoes. We designed an experiment to assess whether root colonization with P. Read More

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November 2018

Jasmonic acid and ethylene are involved in the accumulation of osmotin in germinating tomato seeds.

J Plant Physiol 2018 Nov 20;232:74-81. Epub 2018 Nov 20.

Department of Plant Physiology, Genetics and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-718 Olsztyn, Poland.

The expression of SlNP24 encoding osmotin was studied in germinating tomato seeds Solanum lycopersicum L. cv. Moneymaker. Read More

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November 2018

Exogenous alpha lipoic acid can stimulate photosystem II activity and the gene expressions of carbon fixation and chlorophyll metabolism enzymes in maize seedlings under drought.

J Plant Physiol 2018 Nov 29;232:65-73. Epub 2018 Nov 29.

Department of Biology, Faculty of Science, Karadeniz Technical University, 61080, Trabzon, Turkey. Electronic address:

Protective compounds such as non-enzymatic antioxidants, osmolytes and signal molecules have been applied to plants exposed to various environmental stresses to increase their stress tolerance. However, there are not enough records about the response of plants to alpha lipoic acid (ALA) application with antioxidant properties. Therefore, this study was designed to evaluate the function of exogenous ALA on the photosynthetic performance of maize seedlings grown in hydroponic conditions under drought stress. Read More

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November 2018

Changes in proteolytic activity and protein carbonylation in shoots of Alyssum montanum ecotypes under multi-metal stress.

J Plant Physiol 2018 Nov 19;232:61-64. Epub 2018 Nov 19.

Unit of Botany and Plant Physiology, Institute of Plant Biology and Biotechnology, University of Agriculture in Krakow, Al. 29 Listopada 54, 31-425, Krakow, Poland.

The aim of present study was to evaluate the proteolytic response of metallicolous (M) and nonmetallicolous (NM) ecotypes of Alyssum montanum under heavy metals (HMs) stress. Therefore, shoot cultures of tested species grown on medium enriched simultaneously with 0.7 mM ZnSO, 3. Read More

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November 2018

Expression profiles of organogenesis-related genes over the time course of one-step de novo shoot organogenesis from intact seedlings of kohlrabi.

J Plant Physiol 2018 Nov 8;232:257-269. Epub 2018 Nov 8.

Institute for Biological Research "Siniša Stanković", University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia.

Kohlrabi (Brassica oleracea var. gongylodes) is an important vegetable crop that is able to undergo shoot regeneration in culture from intact seedlings in a single-step regeneration process, using cytokinin as the only plant growth regulator. In this work, we present the expression profiles of seven organogenesis-related genes over the time course of shoot regeneration from intact seedlings of kohlrabi cv. Read More

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November 2018

Orchestration of Cu-Zn SOD and class III peroxidase with upstream interplay between NADPH oxidase and PM H-ATPase mediates root growth in Vigna radiata (L.) Wilczek.

J Plant Physiol 2018 Nov 8;232:248-256. Epub 2018 Nov 8.

Plant Physiology and Biochemistry Laboratory, Department of Botany, Visva-Bharati University, Santiniketan, 731235, West Bengal, India. Electronic address:

Post-germination plant growth depends on the regulation of reactive oxygen species (ROS) metabolism, spatiotemporal pH changes and Ca homeostasis, whose potential integration has been studied during Vigna radiata (L.) Wilczek root growth. The dissipation of proton (H) gradients across plasma membrane (PM) by CCCP (protonophore) and the inhibition of PM H-ATPase by sodium orthovanadate repressed SOD (superoxide dismutase; EC 1. Read More

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November 2018

Drought tolerance in alfalfa (Medicago sativa L.) varieties is associated with enhanced antioxidative protection and declined lipid peroxidation.

J Plant Physiol 2018 Oct 31;232:226-240. Epub 2018 Oct 31.

College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Pratacultural Engineering Laboratory of Gansu Province, Sino-U.S. Centers for Grazing Land Ecosystem Sustainability, Gansu Agricultural University, Lanzhou, 730070, China.

Drought stress is considered the most adverse factor restricting plant survival, growth, and productivity. The identification of the key adaptive mechanisms to drought stress is essential to enhance the drought resistance of plants. In this study, differential responses of three alfalfa varieties to drought, including Medicago sativa L. Read More

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October 2018
1 Read

Apple SUMO E3 ligase MdSIZ1 is involved in the response to phosphate deficiency.

J Plant Physiol 2018 Nov 22;232:216-225. Epub 2018 Nov 22.

MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, Shandong Agricultural University, Tai-An, Shandong, China; College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, China; State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai-An, Shandong, China. Electronic address:

In plants, SIZ1 regulates abiotic and biotic stress responses by promoting the SUMOylation of proteins. The apple MdSIZ1 protein has conserved domains similar to those of Arabidopsis AtSIZ1. Real-time fluorescent quantitative analysis showed that MdSIZ1 gene expression was induced by phosphate-deficient conditions. Read More

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November 2018

A roadmap towards a functional paradigm for learning & memory in plants.

J Plant Physiol 2018 Nov 8;232:209-215. Epub 2018 Nov 8.

Institute of Applied Biosciences, Center for Research & Technology (CERTH), Thessaloniki, Greece.

In plants, the acquisition, processing and storage of empirical information can result in the modification of their behavior according to the nature of the stimulus, and yet this area of research remained relatively understudied until recently. As the body of evidence supporting the inclusion of plants among the higher organisms demonstrating the adaptations to accomplish these tasks keeps increasing, the resistance by traditional botanists and agricultural scientists, who were at first cautious in allowing the application of animal models onto plant physiology and development, subsides. However, the debate retains much of its heat, a good part of it originating from the controversial use of nervous system terms to describe plant processes. Read More

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November 2018

Metabolomic and transcriptional analyses reveal the mechanism of C, N allocation from source leaf to flower in tea plant (Camellia sinensis. L).

J Plant Physiol 2018 Nov 10;232:200-208. Epub 2018 Nov 10.

Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, 31008, China. Electronic address:

Tea flowering in late autumn competes for a large amount of nitrogen and carbohydrates, potentially undermines the storage of these resources in vegetative organs, and negatively influences the subsequent spring tea yield and quality. The mechanism underlying the re-allocation N and carbohydrate from source leaf to flower in tea plant has not been clearly understood. In this study, N allocation, changes in metabolomics, and gene expression in flower buds, flowers, and adjacent leaves were characterized. Read More

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November 2018

Seasonal changes in cold hardiness and carbohydrate metabolism in four garden rose cultivars.

J Plant Physiol 2018 Dec 4;232:188-199. Epub 2018 Dec 4.

Department of Plants and Crops, Ghent University, Coupure links 653, 9000 Gent, Belgium. Electronic address:

We studied metabolic adaptations to cold stress in roses and identified genes in the carbohydrate pathway during acclimation and deacclimation. A field experiment with four rose cultivars belonging to different USDA plant hardiness zones was set up in Melle, Belgium (51° 0' N, 3° 48' E). The more cold-hardy cultivars ('Dagmar Hastrup' and 'John Cabot') reached their lowest LT value in December, indicating a rapid acclimation after the first occurrence of frost. Read More

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December 2018
1 Read

Overexpression of OsNINJA1 negatively affects a part of OsMYC2-mediated abiotic and biotic responses in rice.

J Plant Physiol 2018 Nov 13;232:180-187. Epub 2018 Nov 13.

Plant Genome and Resource Research Center, Faculty of Agriculture, Kagawa University, Miki, Kagawa, 761-0795, Japan. Electronic address:

The plant hormone jasmonic acid (JA) plays an important role in defense response and plant development. Jasmonate ZIM-domain (JAZ) proteins act as transcriptional repressors of plant responses to JA. In this study, we found that OsNINJA1, which is a JAZ-interacting adaptor protein, plays an important role in JA signaling that is positively regulated by the transcription factor OsMYC2 in rice. Read More

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November 2018

Metabolic and biochemical responses of Potamogeton anguillanus Koidz. (Potamogetonaceae) to low oxygen conditions.

J Plant Physiol 2018 Nov 23;232:171-179. Epub 2018 Nov 23.

Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama 338-8570, Japan; Research Institute of Chuo University, Kasuga, Bunkyo, Tokyo 112-8551, Japan. Electronic address:

Oxygen availability in water is considered one of the most important factors for growth and productivity in aquatic submerged macrophytes. In the present study, the growth, stress responses, and metabolic changes in Potamogeton anguillanus Koidz. (Potamogetonaceae) were assessed after a 21-day exposure to low (hypoxia; dissolved oxygen, DO < 1 mg/L) or null (anoxia) oxygen concentrations in water. Read More

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November 2018

Defense responses of Thuja orientalis to infestation of anholocyclic species aphid Cinara tujafilina.

J Plant Physiol 2018 Nov 22;232:160-170. Epub 2018 Nov 22.

Department of Plant Physiology, Poznań University of Life Sciences, Wołyńska 35, 60-637 Poznań, Poland. Electronic address:

The aim of this study was to determine an interdependence between generation of semiquinone radicals, superoxide anion (O-), manganese ions (Mn) and phenolic content in leaves of Thuja orientalis in response to infestation by varying populations of Cinara tujafilina, i.e. 40 or 80 aphids per plant. Read More

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November 2018

Cre-miR914-regulated RPL18 is involved with UV-B adaptation in Chlamydomonas reinhardtii.

J Plant Physiol 2018 Nov 22;232:151-159. Epub 2018 Nov 22.

Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China. Electronic address:

UV radiation is a serious threat to life, and algae have developed highly efficient adaptations to UV radiation through the course of evolution. To date, studies investigating the mechanisms of UV adaptation in algae have focused on physiological regulation and associated protein coding genes, with only a few reports on associated protein non-coding genes. In a previous study, we found that Cre-miR914 was significantly down-regulated in Chlamydomonas reinhardtii in response to heat shock. Read More

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November 2018

Comparative physiological and proteomic analyses of the chloroplasts in halophyte Sesuvium portulacastrum under differential salt conditions.

J Plant Physiol 2018 Nov 16;232:141-150. Epub 2018 Nov 16.

Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou Hainan 571101, China; College of Life Sciences, Key Laboratory for Ecology of Tropical Islands, Ministry of Education, Hainan Normal University, Haikou, Hainan 571158, China. Electronic address:

Sesuvium portulacastrum, an important mangrove-associated true halophyte belongs to the family Aizoaceae, has excellent salt tolerance. Chloroplasts are the most sensitive organelles involved in the response to salinity. However, the regulation mechanism of chloroplasts of S. Read More

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November 2018

Comparison of changes in water status and photosynthetic parameters in wild type and abscisic acid-deficient sitiens mutant of tomato (Solanum lycopersicum cv. Rheinlands Ruhm) exposed to sublethal and lethal salt stress.

J Plant Physiol 2018 Dec 8;232:130-140. Epub 2018 Dec 8.

Department of Plant Biology, University of Szeged, Közép fasor 52, H-6726, Szeged, Hungary.

Abscisic acid (ABA) regulates many salt stress-related processes of plants such as water balance, osmotic stress tolerance and photosynthesis. In this study we investigated the responses of wild type (WT) and the ABA-deficient sitiens mutant of tomato (Solanum lycopersicum cv. Rheinlands Ruhm) to sublethal and lethal salt stress elicited by 100 mM and 250 mM NaCl, respectively. Read More

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December 2018

RNA-aptamers-As targeted inhibitors of protein functions in plants.

J Plant Physiol 2018 Nov 3;232:127-129. Epub 2018 Nov 3.

N.I. Vavilov Institute of General Genetics Russian Academy of Sciences, Gubkina str. 3, Moscow, 119333, Russian Federation.

The scope of RNA-aptamers application is becoming wider and has expanded beyond solely medical use. We propose the use of RNA-aptamers in plants to suppress the functions of individual proteins, thereby achieving resistance to various biotic and abiotic stresses. In current work we experimentally demonstrate the possibility of inhibiting protein activity in N. Read More

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November 2018

RNAi-mediated silencing of pinoresinol lariciresinol reductase in Linum album hairy roots alters the phenolic accumulation in response to fungal elicitor.

J Plant Physiol 2018 Nov 10;232:115-126. Epub 2018 Nov 10.

Department of Plant Pathology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.

Lignans are diphenolic compounds produced in plants via coupling of two coniferyl alcohol molecules with the aid of a dirigent protein to form pinoresinol (PINO). The latter is reduced via lariciresinol (LARI) to secoisolariciresinol by the bifunctional pinoresinol-lariciresinol reductase (PLR). In this study, we clarified the consequences of altered lignan biosynthesis on amino acids, phenolics compounds and lignin in the hairy roots of Linum album with an ihpRNAi construct to silence PLR gene expression. Read More

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November 2018

Organ-specific differences in endogenous phytohormone and antioxidative responses in potato upon PSTVd infection.

J Plant Physiol 2018 Nov 4;232:107-114. Epub 2018 Nov 4.

Ruđer Bošković Institute, Bijenička cesta 54, 10000, Zagreb, Croatia. Electronic address:

Although structurally simple, viroids can trigger numerous changes in host plants and cause loss of yield in agronomically important crops. This study investigated changes in the endogenous status of phytohormones and antioxidant enzyme activity in Solanum tuberosum cv. Désirée in response to Potato spindle tuber viroid (PSTVd) infection. Read More

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November 2018

Stable isotope natural abundances (δC and δN) and carbon-water relations as drought stress mechanism response of taro (Colocasia esculenta L. Schott).

J Plant Physiol 2018 Nov 28;232:100-106. Epub 2018 Nov 28.

ISOPlexis Genebank, University of Madeira, Campus da Penteada, 9020-105, Funchal, Madeira, Portugal.

Taro (Colocasia esculenta L. Schott) is an important staple food crop in tropical and developing countries, having high water requirements. The purpose of this study was to evaluate the feasibility of using carbon and nitrogen isotopic composition (δC and δN) as a physiological indicator of taro response to drought, and elucidation of the relationship between the water use efficiency (WUE) under drought conditions and carbon isotope discrimination (ΔC). Read More

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November 2018

Phytoextraction of copper from a contaminated soil using arable and vegetable crops.

Chemosphere 2018 Dec 4;219:122-129. Epub 2018 Dec 4.

Department of Agrifood Production and Environmental Sciences, University of Florence, Piazzale Delle Cascine, 18, 50144, Florence, Italy.

Copper (Cu) is among the main contaminant of agricultural soil. The reclamation of Cu polluted soils can be achieved with phytoextraction even if, in general, plants are Cu-excluders and uncommon are Cu-accumulators. The research objectives were to establish the Cu removal capacity by arable and vegetable crops and to investigate the distribution of Cu in their roots, stems and leaves, and fruits. Read More

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December 2018
2 Reads

Estimating soil nitrate leaching of nitrogen fertilizer from global meta-analysis.

Sci Total Environ 2018 Dec 4;657:96-102. Epub 2018 Dec 4.

Key Lab of Plant-Soil Interaction, Ministry of Education, Center for Resources, Environment and Food Security, College Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China. Electronic address:

Global estimates of soil nitrate leaching of applied nitrogen (N) in agricultural production systems are not imprecise; however, the results of some field experiments have suggested that nitrate leaching responds exponentially rather than linearly to increasing N inputs. In this study, we compiled field data on nitrate leaching for 324 site-year combinations extracted from 86 peer-reviewed articles to test the hypothesis that in response to N fertilizer addition, soil nitrate leaching emission factors (EF) do not remain constant, but rather increase rapidly with increasing rates of N application. The averaged overall results showed that the proportional change in the EF response to increasing N input (ΔEF, %) was 0. Read More

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December 2018
1 Read

Elevated ozone reduced leaf nitrogen allocation to photosynthesis in poplar.

Sci Total Environ 2018 Dec 3;657:169-178. Epub 2018 Dec 3.

State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Shuangqing Road 18, Haidian District, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China; Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Technology, Nanjing University of Information Science & Technology, Nanjing 210044, China. Electronic address:

We investigated the effects of elevated ozone (O) concentration on leaf nitrogen (N), a key determinant of plant photosynthesis, with two clones of poplar grown in open-top chambers. We focus on the difference between mass-based leaf N concentration (N) and area-based one (N) in their responses to elevated O, and the allocation of N to different leaf components: photosynthetic apparatus, cell walls, and others under elevated O level. Our results showed that elevated O significantly increased N, but reduced N and leaf mass per area (LMA). Read More

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December 2018

Mesophyll conductance limitation of photosynthesis in poplar under elevated ozone.

Sci Total Environ 2018 Dec 4;657:136-145. Epub 2018 Dec 4.

Department of Biological and Environmental Sciences, University of Gothenburg, SE-405 30 Gothenburg, Sweden.

Finite mesophyll conductance (g) reduces the rate of CO diffusion from the leaf intercellular space to the chloroplast and constitutes a major limitation of photosynthesis in trees. While it is well established that g is decreased by stressors such as drought and high temperature, few studies have investigated if the phytotoxic air pollutant ozone (O) affects g. We quantified the relative importance of three different types of limitations of photosynthesis in poplar trees exposed to elevated O: decreases in stomatal conductance, g and biochemical photosynthetic capacity. Read More

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December 2018
1 Read

Do concentrations of perfluoroalkylated acids (PFAAs) in isopods reflect concentrations in soil and songbirds? A study using a distance gradient from a fluorochemical plant.

Sci Total Environ 2018 Dec 7;657:111-123. Epub 2018 Dec 7.

Systemic Physiological and Ecotoxicologal Research (SPHERE), Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium. Electronic address:

Perfluoroalkylated acids (PFAAs) are persistent chemicals that have been detected globally in the environment and in wildlife. Although it is known that PFAAs sorb to solid matrices, little is known on PFAA concentrations in soils. PFAA pollution has often been studied in aquatic invertebrates. Read More

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December 2018

A clay-based formulation of the herbicide imazaquin containing exclusively the biologically active enantiomer.

Pest Manag Sci 2018 Dec 10. Epub 2018 Dec 10.

Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS, CSIC), Avenida Reina Mercedes 10, 41012 Sevilla, Spain.

Background: Imazaquin is a chiral herbicide which displays high mobility in soils. Like other imidazolinones, imazaquin is available for use only as racemic mixture of its enantiomers. In this work, several clay materials were assayed as adsorbents of imazaquin, and then the most suitable material was selected to prepare a clay-based slow release imazaquin nanoformulation containing exclusively the biologically active R-enantiomer. Read More

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December 2018

The histone-like protein HupB influences biofilm formation and virulence in Xanthomonas citri subsp. citri through the regulation of flagellar biosynthesis.

Mol Plant Pathol 2018 Dec 8. Epub 2018 Dec 8.

Instituto de Ciencia y Tecnología Dr. César Milstein, Fundación Pablo Cassará, CONICET. Saladillo 2468, C1440FFX, Ciudad de Buenos, Aires, Argentina.

Citrus canker is an important disease of citrus, whose causal agent is the bacterium Xanthomonas citri subsp. citri (Xcc). In previous studies, we found a group of Xcc mutants, generated by the insertion of the Tn5 transposon, which show impaired ability to attach to an abiotic substrate. Read More

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December 2018

Plant compartment and genetic variation drive microbiome composition in switchgrass roots.

Environ Microbiol Rep 2018 Dec 10. Epub 2018 Dec 10.

University of Texas Austin, Austin, TX, USA.

Switchgrass (Panicum virgatum) is a promising biofuel crop native to the United States with genotypes that are adapted to a wide range of distinct ecosystems. Various plants have been shown to undergo symbioses with plant growth promoting bacteria and fungi, however, plant-associated microbial communities of switchgrass have not been extensively studied to date. We present 16S ribosomal RNA gene and internal transcribed spacer (ITS) data of rhizosphere and root endosphere compartments of four switchgrass genotypes to test the hypothesis that host selection of its root microbiota prevails after transfer to non-native soil. Read More

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December 2018

cAMP/PKA Signaling Pathway Regulates Redox homeostasis essential for Sporisorium scitamineum Mating/Filamentation and Virulence.

Environ Microbiol 2018 Dec 10. Epub 2018 Dec 10.

Department of Plant Pathology, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, 510642, China.

The fungal pathogen Sporisorium scitamineum causes sugarcane smut disease. The formation and growth of dikaryotic hypha after sexual mating is critical for S. scitamineum pathogenicity, however regulation of S. Read More

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December 2018

Exploring subindividual variability: role of ontogeny, abiotic environment, and seed-dispersing birds.

Plant Biol (Stuttg) 2018 Dec 10. Epub 2018 Dec 10.

Departamento de Bioloxía Celular e Ecoloxía, Universidade de Santiago de Compostela, Spain.

Within-individual trait variation -otherwise known as subindividual variation- is an important component of phenotypic variation, with a genetic and epigenetic basis. We explore its adaptive value and the effects of ontogeny and the environment on subindividual variability. We conducted a field study to analyze the effects of tree age, soil pH, soil water content, and soil nutrients on subindividual variability in fruit size of Hawthorn (Crataegus monogyna) in three sites in Northwestern Spain. Read More

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December 2018

A quantitative trait locus, qSE3, promotes seed germination and seedling establishment under salinity stress in rice.

Plant J 2018 Dec 7. Epub 2018 Dec 7.

The Laboratory of Seed Science and Technology, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095, PR China.

Seed germination is a complex trait determined by both quantitative trait loci (QTLs) and environmental factors and also their interactions. In this study, we mapped one major QTL qSE3 for seed germination and seedling establishment under salinity stress in rice. To understand the molecular basis of this QTL, we isolated qSE3 by map-based cloning and found that it encodes a K transporter gene, OsHAK21. Read More

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December 2018

Correction.

Authors:

Plant J 2018 Dec;96(6):1317

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December 2018

Pseudozyma aphidis activates reactive oxygen species production, programmed cell death and morphological alterations in the necrotrophic fungus Botrytis cinerea.

Mol Plant Pathol 2018 Dec 10. Epub 2018 Dec 10.

Department of Plant Pathology and Microbiology, The Robert H. Smith, Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, 76100, Israel.

Many types of yeasts have been studied in the last few years as potential biocontrol agents against different phytopathogenic fungi. Their ability to control plant diseases is mainly through combined modes of action. Among them, antibiosis, competition for nutrients and niches, induction of systemic resistance in plants and mycoparasitism have been the most studied. Read More

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December 2018

Activation of immune receptor Rx1 triggers distinct immune-responses culminating in cell death after four hours.

Mol Plant Pathol 2018 Dec 8. Epub 2018 Dec 8.

University of Amsterdam, Molecular Plant Pathology, Amsterdam, Netherlands.

Intracellular NLR (nucleotide-binding leucine-rich repeat)-type immune receptors are a fundamental aspect of plant immune systems. As infection occurs at foci, activation of immune responses is typically non-uniform and non-synchronized, hampering the systematic dissection of their cellular effects and determining their phasing. We investigated the Potato NLR Rx1 using the CESSNA (Controlled Expression of effectors for Synchronized and Systemic NLR Activation) platform. Read More

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December 2018

Microbial production of natural and non-natural monolignols with Escherichia coli.

Chembiochem 2018 Dec 11. Epub 2018 Dec 11.

Forschungszentrum Julich, Institute of Bio- and Geosciences, Leo-Brandt-Straße, 52425, Juelich, GERMANY.

Phenylpropanoids and phenylpropanoid-derived plant polyphenols find numerous applications in food and pharmaceutical industries. In recent years, several microbial platform organisms were engineered towards producing such compounds. However, for the most part, microbial (poly)phenol production is inspired by nature, and thus predominantly naturally occurring compounds have been produced to this date. Read More

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December 2018
2 Reads

Functional characterization of horizontally transferred 4,5-DOPA extradiol dioxygenase gene in the domestic silkworm, Bombyx mori.

Insect Mol Biol 2018 Dec 10. Epub 2018 Dec 10.

Laboratory of Evolutionary and Functional Genomics, School of Life Sciences, Chongqing University, Chongqing, 401331, China.

4,5-DOPA dioxygenase (DODA) is a crucial enzyme in the biosynthetic pathway of betalain. Previous studies have shown that DODA is present in plants, fungi and bacteria. Using updated data, here, we show that DODA genes (BmDODA) in domestic silkworm (Bombyx mori) and other lepidopteran insects are most likely to be horizontally transferred from fungi. Read More

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December 2018

An Updated Gene Atlas for Maize Reveals Organ-Specific and Stress-Induced Genes.

Plant J 2018 Dec 7. Epub 2018 Dec 7.

Department of Plant Biology, Michigan State University, East Lansing, MI, 48824, USA.

Maize(Zea mays L.), a model species for genetic studies, is one of the two most important crop species worldwide.The genome sequence of the reference genotype, B73, representative of the stiff stalk heterotic group was recently updated (AGPv4) using long-read sequencing and optical mapping technology. Read More

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December 2018
2 Reads

Novel microbial community composition and carbon biogeochemistry emerge over time following saltwater intrusion in wetlands.

Glob Chang Biol 2018 Dec 9. Epub 2018 Dec 9.

Department of Biology, Trani Center for Life Sciences, Virginia Commonwealth University, Richmond, Virginia.

Sea level rise and changes in precipitation can cause saltwater intrusion into historically freshwater wetlands, leading to shifts in microbial metabolism that alter greenhouse gas emissions and soil carbon sequestration. Saltwater intrusion modifies soil physicochemistry and can immediately affect microbial metabolism, but further alterations to biogeochemical processing can occur over time as microbial communities adapt to the changed environmental conditions. To assess temporal changes in microbial community composition and biogeochemical activity due to saltwater intrusion, soil cores were transplanted from a tidal freshwater marsh to a downstream mesohaline marsh and periodically sampled over 1 year. Read More

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December 2018

Homeostatic maintenance of non-structural carbohydrates during the 2015-2016 El Niño drought across a tropical forest precipitation gradient.

Plant Cell Environ 2018 Dec 11. Epub 2018 Dec 11.

Earth and Environmental Sciences Area, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.

Non-structural carbohydrates (NSCs) are essential for maintenance of plant metabolism, and may be sensitive to both short- and long-term climatic variation. NSC variation in moist tropical forests has rarely been studied, so regulation of NSCs in these systems is poorly understood. We measured foliar and branch NSC content in 23 tree species at three sites located across a large precipitation gradient in Panama during the 2015-2016 El Niño to examine how short- and long-term climatic variation impact carbohydrate dynamics. Read More

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December 2018

Does acclimation in cavitation resistance due to mechanical perturbation support the pit area or conduit reinforcement hypotheses in Phaseolus vulgaris?

Physiol Plant 2018 Dec 10. Epub 2018 Dec 10.

Department of Biology, Augustana University, Sioux Falls, SD 57197, USA.

Two Phaseolus vulgaris L. cultivars were exposed to reduced water and stem mechanical perturbation treatments (flexing) to determine if acclimation to these treatments induced hydraulic changes, altered cavitation resistance and changed stem mechanical properties. Additionally, this study sought to determine if changes in cavitation resistance would support the pit area or conduit reinforcement hypotheses. Read More

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December 2018

Developing a highly efficient and wildly adaptive CRISPR-SaCas9 toolset for plant genome editing.

Plant Biotechnol J 2018 Dec 10. Epub 2018 Dec 10.

Key Laboratory of Rice Genetic Breeding of Anhui Province, Rice Research Institute, Anhui Academy of Agricultural Sciences, Hefei, 230031, China.

The CRISPR- Streptococcus pyogenes Cas9 (SpCas9) system offers a rapid, simple and flexible genome editing approach. However, the targeting scope of the SpCas9 system is limited by the canonical NGG PAM. To broaden the editing range of the CRISPR system, several Cas orthologs recognized different PAM were isolated from diverse microbes and were engineered as powerful genome editing tools in eukaryotic cells (Murovec et al. Read More

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December 2018

Functional Characterization of LIKE HETEROCHROMATIN PROTEIN 1 in the moss Physcomitrella patens: its conserved protein interactions in land plants.

Plant J 2018 Dec 7. Epub 2018 Dec 7.

University School of Biotechnology, Guru Gobind Singh Indraprastha University, Sector 16C, Dwarka, New, Delhi-110078, India.

In flowering plants LIKE HETEROCHROMATIN PROTEIN 1 (LHP1)/TERMINAL FLOWER 2 (TFL2) is known to interact with polycomb group (PcG) and non-PcG proteins and control developmental programs. LHP1/TFL2 is an ancient protein and has been characterized in the early-divergent plant Physcomitrella patens. However, interacting partners of PpLHP1 other than the chromomethylase PpCMT have not been identified to date. Read More

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December 2018

Mitochondrial Function Modulates Touch Signalling in Arabidopsis thaliana.

Plant J 2018 Dec 8. Epub 2018 Dec 8.

Department of Animal, Plant and Soil Science, School of Life Science, Australian Research Council Centre of Excellence in Plant Energy Biology, La Trobe University, 5 Ring Road, Bundoora, 3086, Victoria, Australia.

Plants respond to short- and long-term mechanical stimuli, via altered transcript abundance and growth respectively. Jasmonate, gibberellic acid and calcium have been implicated in mediating responses to mechanical stimuli. Previously it was shown that the transcript abundance for the outer mitochondrial membrane protein of 66 kDa (OM66), is induced several-fold after 30 min in response to touch. Read More

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December 2018
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High expression of LASS2 is associated with unfavorable prognosis in patients with ovarian cancer.

J Cell Physiol 2018 Dec 7. Epub 2018 Dec 7.

Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, China.

Homo sapiens longevity assurance homolog 2 of yeast LAG1 (LASS2), is a gene isolated from a human liver complementary DNA library. In this study, we found that LASS2 protein level was positively related to International Federation of Gynecology and Obstetrics (FIGO) stage and LASS2-negative tumors showed significant association with longer disease-free survival (DFS) and overall survival (OS) in ovarian cancer patients. The heterogeneous expression of LASS2 had been exhibited in diverse ovarian cancer cells. Read More

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December 2018

Vectorizing agrochemicals: enhancing bioavailability via carrier-mediated transport.

Pest Manag Sci 2018 Dec 7. Epub 2018 Dec 7.

Institut de Chimie des Milieux et des Matériaux de Poitiers (IC2MP), Unité Mixte de Recherche CNRS 7285, Université de Poitiers, 4 rue Michel Brunet, TSA 51106, F-86073 Poitiers cedex 9 France.

Systemicity of agrochemicals is an advantageous property for controlling phloem sucking insects, as well as pathogens and pests not accessible to contact products. After the penetration of the cuticle, the plasma membrane constitutes the main barrier to the entry of an agrochemical into the sap flow. The current strategy for developing systemic agrochemicals is to optimize the physicochemical properties of the molecules so that they can cross the plasma membrane by simple diffusion or ion trapping mechanisms. Read More

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December 2018
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