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https://www.readbyqxmd.com/read/28643868/the-potassium-battery-a-mobile-energy-source-for-transport-processes-in-plant-vascular-tissues
#1
REVIEW
Ingo Dreyer, Judith Lucia Gomez-Porras, Janin Riedelsberger
Contents I. II. III. IV. V. VI. VII. VIII. References SUMMARY: Plant roots absorb potassium ions from the soil and transport them in the xylem via the transpiration stream to the shoots. There, in source tissues where sufficient chemical energy (ATP) is available, K(+) is loaded into the phloem and then transported with the phloem stream to other parts of the plant; in part, transport is also back to the roots. This, at first sight, futile cycling of K(+) has been uncovered to be part of a sophisticated mechanism that (1) enables the shoot to communicate its nutrient demand to the root, (2) contributes to the K(+) nutrition of transport phloem tissues and (3) transports energy stored in the K(+) gradient between phloem cytosol and the apoplast...
June 23, 2017: New Phytologist
https://www.readbyqxmd.com/read/28643283/role-of-cation-structure-in-the-phytotoxicity-of-ionic-liquids-growth-inhibition-and-oxidative-stress-in-spring-barley-and-common-radish
#2
Robert Biczak, Barbara Pawłowska, Arkadiusz Telesiński, Janusz Kapuśniak
The present study determines the influence of three ionic liquids (ILs) containing cations with diversified structure on the growth and development of spring barley seedlings and common radish leaves. Increasing amounts of 1-butyl-1-methylpyrrolidinium hexafluorophosphate [Pyrrol][PF6], 1-butyl-1-methylpiperidinium hexafluorophosphate [Piper][PF6], and 1-butyl-4-methylpyridinium hexafluorophosphate [Pyrid][PF6] were added to the soil on which both plants were cultivated. The results of this studies showed that the applied ILs were highly toxic for plants, demonstrated by the inhibition of length of plant shoots and roots, decrease of fresh mass, and increase of dry weight content...
June 22, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28642968/enhancing-the-enzymatic-saccharification-of-bamboo-shoot-shell-by-sequential-biological-pretreatment-with-galactomyces-sp-cczu11-1-and-deep-eutectic-solvent-extraction
#3
Yong Dai, Hai-Sheng Zhang, Bin Huan, Yucai He
In this study, sequential biological pretreatment (BP) with Galactomyces sp. CCZU11-1 at 30 °C for 3 days and deep eutectic solvent (DES) choline chloride: oxalic acid (ChCl:OA, 1 mol/2 mol) extraction at 120 °C for 1.5 h was used for pretreating BSS. It was found that combination pretreatment could effectively remove xylan and lignin for enhancing enzymatic saccharification. The reducing sugars and glucose from the hydrolysis of 100 g/L pretreated BSS with complexed cellulases of Galactomyces sp. CCZU11-1 were obtained in the yields of 81...
June 22, 2017: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/28642773/infestation-of-broad-bean-vicia-faba-by-the-green-stink-bug-nezara-viridula-decreases-shoot-abscisic-acid-contents-under-well-watered-and-drought-conditions
#4
Luisa Ederli, Cecilia Brunetti, Mauro Centritto, Stefano Colazza, Francesca Frati, Francesco Loreto, Giovanni Marino, Gianandrea Salerno, Stefania Pasqualini
The response of broad bean (Vicia faba) plants to water stress alone and in combination with green stink bug (Nezara viridula) infestation was investigated through measurement of: (1) leaf gas exchange; (2) plant hormone titres of abscisic acid (ABA) and its metabolites, and of salicylic acid (SA); and (3) hydrogen peroxide (H2O2) content. Furthermore, we evaluated the effects of experimentally water-stressed broad-bean plants on N. viridula performance in terms of adult host-plant preference, and nymph growth and survival...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28642763/rootstock-sub-optimal-temperature-tolerance-determines-transcriptomic-responses-after-long-term-root-cooling-in-rootstocks-and-scions-of-grafted-tomato-plants
#5
Georgia Ntatsi, Dimitrios Savvas, Vassilis Papasotiropoulos, Anastasios Katsileros, Rita M Zrenner, Dirk K Hincha, Ellen Zuther, Dietmar Schwarz
Grafting of elite cultivars onto tolerant rootstocks is an advanced strategy to increase tomato tolerance to sub-optimal temperature. However, a detailed understanding of adaptive mechanisms to sub-optimal temperature in rootstocks and scions of grafting combinations on a physiological and molecular level is lacking. Here, the commercial cultivar Kommeet was grafted either onto 'Moneymaker' (sensitive) or onto the line accession LA 1777 of Solanum habrochaites (tolerant). Grafted plants were grown in NFT-system at either optimal (25°C) or sub-optimal (15°C) temperatures in the root environment with optimal air temperature (25°C) for 22 days...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28642762/arbuscular-mycorrhiza-augments-arsenic-tolerance-in-wheat-triticum-aestivum-l-by-strengthening-antioxidant-defense-system-and-thiol-metabolism
#6
Surbhi Sharma, Garima Anand, Neeraja Singh, Rupam Kapoor
Arbuscular mycorrhiza (AM) can help plants to tolerate arsenic (As) toxicity. However, plant responses are found to vary with the host plant and the AM fungal species. The present study compares the efficacy of two AM fungi Rhizoglomus intraradices (M1) and Glomus etunicatum (M2) in amelioration of As stress in wheat (Triticum aestivum L. var. HD-2967). Mycorrhizal (M) and non-mycorrhizal (NM) wheat plants were subjected to four levels of As (0, 25, 50, and 100 mg As kg(-1) soil). Although As additions had variable effects on the percentage of root colonized by the two fungal inoculants, each mycobiont conferred benefits to the host plant...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28641150/polyamine-and-tyramine-involvement-in-nacl-induced-improvement-of-cd-resistance-in-the-halophyte-inula-chrithmoides-l
#7
Rim Ghabriche, Tahar Ghnaya, Mejda Mnasri, Hanen Zaier, Raoudha Baioui, Delphine Vromman, Chedly Abdelly, Stanley Lutts
The aim of the present work was to analyze the impact of salinity on the plant response to Cd toxicity in the Mediterranean halophyte species Inula crithmoides. For this purpose, cuttings were cultivated hydroponically during 21d in the presence of 0, 25 or 50μM CdCl2 combined or not with 0, 100, 200 and 400mM NaCl. The obtained data demonstrated that, in the absence of Cd, NaCl strongly increased plant growth (the maximal dry weight being observed at 100mM) and enhanced the Na(+)/K(+) ratio in the shoot. Cd alone strongly affected plant growth in this halophyte...
June 6, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28640834/overexpression-of-gmfdl19-enhances-tolerance-to-drought-and-salt-stresses-in-soybean
#8
Yuanyuan Li, Quanzhen Chen, Haiyang Nan, Xiaoming Li, Sijia Lu, Xiaohui Zhao, Baohui Liu, Changhong Guo, Fanjiang Kong, Dong Cao
The basic leucine zipper (bZIP) family of transcription factors plays an important role in the growth and developmental process as well as responds to various abiotic stresses, such as drought and high salinity. Our previous work identified GmFDL19, a bZIP transcription factor, as a flowering promoter in soybean, and the overexpression of GmFDL19 caused early flowering in transgenic soybean plants. Here, we report that GmFDL19 also enhances tolerance to drought and salt stress in soybean. GmFDL19 was determined to be a group A member, and its transcription expression was highly induced by abscisic acid (ABA), polyethylene glycol (PEG 6000) and high salt stresses...
2017: PloS One
https://www.readbyqxmd.com/read/28638623/the-genetic-architecture-of-growth-traits-in-salix-matsudana-under-salt-stress
#9
Jian Zhang, Huwei Yuan, Qingshan Yang, Min Li, Ying Wang, Yujuan Li, Xiangjian Ma, Feng Tan, Rongling Wu
Willow (Salix) is one of the most important ornamental tree species in landscape plants. One species, Salix matsudana, is widely used as a shade tree and border tree because of its soft branches and plump crown. Some varieties of S. matsudana were salt tolerant and could grow normally in coastal regions. However, the molecular mechanisms of salt tolerance for S. matsudana have been less clear. Here, we addressed this issue by performing a mapping experiment containing 195 intraspecific F1 progeny of S. matsudana, derived from salt-sensitive 'yanjiang' and salt-tolerant '9901', grown by cuttings in a 100 mM NaCl solution...
2017: Horticulture Research
https://www.readbyqxmd.com/read/28638622/the-synergistic-use-of-plant-and-isolated-bacteria-to-clean-up-polycyclic-aromatic-hydrocarbons-from-contaminated-soil
#10
S Eskandary, A Tahmourespour, M Hoodaji, A Abdollahi
BACKGROUND: Biological methods of polycyclic aromatic hydrocarbons (PAH) contamination elimination typically involve the transformation of contaminants to non-toxic materials by microorganisms and plants and appear to be the most effective methods available. METHODS: In this study, Bacillus licheniformis and Bacillus mojavensis isolated from oil-contaminated soils were inoculated onto Festuca arundinacea seeds before planting in the pot and 3 weeks after planting by syringe injection into the rhizospheric zone in order to study the elimination of PAHs from Festuca's rhizosphere in the greenhouse...
2017: Journal of Environmental Health Science & Engineering
https://www.readbyqxmd.com/read/28638391/glomus-mosseae-inoculation-improves-the-root-system-architecture-photosynthetic-efficiency-and-flavonoids-accumulation-of-liquorice-under-nutrient-stress
#11
Meilan Chen, Guang Yang, Ye Sheng, Pengying Li, Hongyan Qiu, Xiuteng Zhou, Luqi Huang, Zhi Chao
The poor quality and low productivity of cultivated liquorice (Glycyrrhiza uralensis) continues to put pressure on wild plant populations. As arbuscular mycorrhizal fungi are known to support plant growth and in some cases even to enhance the accumulation of valuable molecules in the plant, the effect of Glomus mosseae on the growth and active ingredient contents was evaluated in liquorice plants grown under nutrient deficiency. We created a nutrient-deficient environment by mixing paddy soil, washed river sand, and pumice at a ratio of 1:5:1...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28638387/predicting-flowering-behavior-and-exploring-its-genetic-determinism-in-an-apple-multi-family-population-based-on-statistical-indices-and-simplified-phenotyping
#12
Jean-Baptiste Durand, Alix Allard, Baptiste Guitton, Eric van de Weg, Marco C A M Bink, Evelyne Costes
Irregular flowering over years is commonly observed in fruit trees. The early prediction of tree behavior is highly desirable in breeding programmes. This study aims at performing such predictions, combining simplified phenotyping and statistics methods. Sequences of vegetative vs. floral annual shoots (AS) were observed along axes in trees belonging to five apple related full-sib families. Sequences were analyzed using Markovian and linear mixed models including year and site effects. Indices of flowering irregularity, periodicity and synchronicity were estimated, at tree and axis scales...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28637832/autophosphorylation-affects-substrate-binding-affinity-of-tobacco-ca2-dependent-protein-kinase1
#13
Takeshi Ito, Sarahmi Ishida, Shota Oe, Jutarou Fukazawa, Yohsuke Takahashi
Protein kinases regulate diverse physiological processes. Because many kinases preserve inherent autophosphorylation capability, autophosphorylation appears to be one of the most important mechanisms for cellular signaling. However, physiological functions of autophosphorylation are still largely unknown other than the self-activation by phosphorylation of activation loop in the catalytic domain. REPRESSION OF SHOOT GROWTH (RSG) is the transcription factor involved in gibberellin (GA) feedback regulation. The tobacco (Nicotiana tabacum) Ca2+-dependent protein kinase, NtCDPK1, phosphorylates RSG, resulting in the negative regulation of RSG...
June 21, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28637710/the-combined-action-of-duplicated-boron-transporters-is-required-for-maize-growth-in-boron-deficient-conditions
#14
Mithu Chatterjee, Qiujie Liu, Caitlin Menello, Mary Galli, Andrea Gallavotti
The micronutrient boron is essential in maintaining the structure of plant cell walls and is critical for high yields in crop species. Boron can move into plants by diffusion or by active and facilitated transport mechanisms. We recently showed that mutations in the maize boron efflux transporter ROTTEN EAR (RTE) cause severe developmental defects and sterility. RTE is part of a small gene family containing five additional members (RTE2-RTE6) that show tissue specific expression. The close paralogous gene RTE2 encodes a protein with 95% amino acid identity with RTE and is similarly expressed in shoot and root cells surrounding the vasculature...
June 21, 2017: Genetics
https://www.readbyqxmd.com/read/28636976/improving-soil-nutrient-availability-increases-carbon-rhizodeposition-under-maize-and-soybean-in-mollisols
#15
Yunfa Qiao, Shujie Miao, Xiaozeng Han, Shuping Yue, Caixian Tang
Rhizodeposited carbon (C) is an important source of soil organic C, and plays an important role in the C cycle in the soil-plant-atmosphere continuum. However, interactive effects of plant species and soil nutrient availability on C rhizodeposition remain unclear. This experiment examined the effect of soil nutrient availability on C rhizodeposition of C4 maize and C3 soybean with contrasting photosynthetic capacity. The soils (Mollisols) were collected from three treatments of no fertilizer (Control), inorganic fertilizer only (NPK), and NPK plus organic manure (NPKM) in a 24-year fertilization field trial...
June 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28633427/genotypic-variation-in-tolerance-to-drought-stress-is-highly-coordinated-with-hydraulic-conductivity-photosynthesis-interplay-and-aquaporin-expression-in-field-grown-mulberry-morus-spp
#16
Kanubothula Sitarami Reddy, Kalva Madhana Sekhar, Attipalli Ramachandra Reddy
Hydraulic conductivity quantifies the efficiency of a plant to transport water from root to shoot and is a major constriction on leaf gas exchange physiology. Mulberry (Morus spp.) is the most economically important crop for sericulture industry. In this study, we demonstrate a finely coordinated control of hydraulic dynamics on leaf gas exchange characteristics in 1-year-old field-grown mulberry genotypes (Selection-13 (S13); Kollegal Local (KL) and Kanva-2 (K2)) subjected to water stress by withholding water for 20 days and subsequent recovery for 7 days...
June 14, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28633293/the-tonoplast-localized-transporter-mtp8-2-contributes-to-manganese-detoxification-in-the-shoots-and-roots-of-oryza-sativa-l
#17
Yuma Takemoto, Yuta Tsunemitsu, Miho Fujii-Kashino, Namiki Mitani-Ueno, Naoki Yamaji, Jian Feng Ma, Shin-Ichiro Kato, Kozo Iwasaki, Daisei Ueno
Manganese (Mn) cation diffusion facilitators (Mn-CDFs) play important roles in the Mn homeostasis of plants. In rice, the tonoplast-localized Mn-CDF metal tolerance protein 8.1 (MTP8.1) is involved in Mn detoxification in the shoots. This study functionally characterized the Mn-CDF MTP8.2 and determined its contribution to Mn tolerance. MTP8.2 was found to share 68% identity with MTP8.1 and was expressed in both the shoots and roots, but its transcription level was lower than that of MTP8.1. Transient expression of the MTP8...
June 13, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28630990/correction-the-true-effect-of-mass-shootings-on-americans
#18
(no author information available yet)
No abstract text is available yet for this article.
June 20, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28628976/effective-enzymatic-in-situ-saccharification-of-bamboo-shoot-shell-pretreated-by-dilute-alkalic-salts-sodium-hypochlorite-sodium-sulfide-pretreatment-under-the-autoclave-system
#19
Gang-Gang Chong, Yu-Cai He, Qiu-Xiang Liu, Xiao-Qin Kou, Xiao-Jun Huang, Jun-Hua Di, Cui-Luan Ma
In this study, dilute alkali salts (0.6% NaClO, 0.067% Na2S) pretreatment at 10% sulfidity under the autoclave system at 120°C for 40min was used for pretreating bamboo shoot shell (BSS). Furthermore, FT-IR, XRD and SEM were employed to characterize the changes in the cellulose structural characteristics (porosity, morphology, and crystallinity) of the pretreated BSS solid residue. After 72h, the reducing sugars and glucose from the enzymatic in situ hydrolysis of 50g/L pretreated BSS in dilute NaClO/Na2S media could be obtained at 31...
June 1, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28626638/transcriptome-of-barley-under-three-different-heavy-metal-stress-reaction
#20
Martina Kintlová, Nicolas Blavet, Radim Cegan, Roman Hobza
In the present study, we used Illumina sequencing technology (HiSeq 2000) to sequence the transcriptome of barley (Hordeum vulgare L., cv. Morex) under three different heavy metal stress conditions: copper, zinc and cadmium. For each of those metals, the concentration causing a 50% inhibitory effect for root growth (EC50) was determined. We sequenced the total RNA of both roots and shoots from barley with and without heavy metal treatments in three replicates. Raw reads of the transcriptome project have been deposited in NCBI's BioProject accession number PRJNA382490...
September 2017: Genomics Data
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