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1. Food security in 2044: How do we control the fungal threat?

Author:
Kettles, Graeme J.; Luna, Estrella
Source:
Fungal biology 2019 v.123 no.8 pp. 558-564
ISSN:
1878-6146
Subject:
agricultural productivity; agrochemicals; control methods; crop yield; disease control; farming systems; food security; industry; plant breeding; plant disease resistance; plant diseases and disorders; plant pathogenic fungi; resistance genes
Abstract:
... Plant fungal pathogens place considerable strain on agricultural productivity and threaten global food security. In recent decades, advances in crop breeding, farming practice and the agrochemical industry have allowed crop yields to keep pace with food demand. In this opinion article, we speculate on which recent technological advances will allow us to maintain this situation into the future. We ...
DOI:
10.1016/j.funbio.2019.04.006

2. Interacting climate change environmental factors effects on Fusarium langsethiae growth, expression of Tri genes and T-2/HT-2 mycotoxin production on oat-based media and in stored oats

Author:
Verheecke-Vaessen, Carol; Diez-Gutierrez, Lucia; Renaud, Justin; Sumarah, Mark; Medina, Angel; Magan, Naresh
Source:
Fungal biology 2019 v.123 no.8 pp. 618-624
ISSN:
1878-6146
Subject:
Fusarium; HT-2 toxin; Plantae; T-2 toxin; agar; biosynthesis; carbon dioxide; carbon dioxide enrichment; climate change; environmental factors; food security; fungal growth; gene expression regulation; gene overexpression; genes; liquid chromatography; metabolites; oats; phenotype; relative risk; tandem mass spectrometry; temperature; water activity
Abstract:
... This study examined the effect of climate change (CC) abiotic factors of temperature (20, 25, 30 °C), water activity (aw; 0.995, 0.98) and CO2 exposure (400, 1000 ppm) may have on (a) growth, (b) gene expression of biosynthetic toxin genes (Tri5, Tri6, Tri16), and (c) T-2/HT-2 toxins and associated metabolites by Fusarium langsethiae on oat-based media and in stored oats. Lag phases and growth wer ...
DOI:
10.1016/j.funbio.2019.04.008

3. Monitoring indole alkaloid production by Penicillium digitatum during infection process in citrus by Mass Spectrometry Imaging and molecular networking

Author:
Costa, Jonas Henrique; Bazioli, Jaqueline Moraes; de Vilhena Araújo, Eder; Vendramini, Pedro Henrique; de Freitas Porto, Mariana Cristina; Eberlin, Marcos Nogueira; Souza-Neto, Jayme A.; Fill, Taícia Pacheco
Source:
Fungal biology 2019 v.123 no.8 pp. 594-600
ISSN:
1878-6146
Subject:
Aedes aegypti; Citrus; Penicillium digitatum; bioassays; biological control; fruits; hosts; image analysis; indole alkaloids; insecticidal properties; mass spectrometry; monitoring; plant pathogenic fungi; postharvest diseases; secondary metabolites; toxicity
Abstract:
... Green mold, caused by Penicillium digitatum, is the most destructive post-harvest disease in citrus. Secondary metabolites produced by fungal phytopathogens have been associated with toxicity to their respective host through the interaction with a wide range of cell targets. Natural products have also been described as important molecules for biocontrol and competition in their respective environm ...
DOI:
10.1016/j.funbio.2019.03.002

4. Oosporein, an abundant metabolite in Beauveria caledonica, with a feedback induction mechanism and a role in insect virulence

Author:
Mc Namara, Louise; Dolan, Stephen K.; Walsh, John M.D.; Stephens, John C.; Glare, Travis R.; Kavanagh, Kevin; Griffin, Christine T.
Source:
Fungal biology 2019 v.123 no.8 pp. 601-610
ISSN:
1878-6146
Subject:
Beauveria bassiana; Galleria mellonella; Hylobius abietis; adults; antifeedants; biological control agents; biosynthesis; enzymes; forestry; hemocytes; immune system; immunomodulation; insect larvae; insects; metabolites; pests; proteomics; virulence
Abstract:
... Oosporein was first identified from the insect pathogen Beauveria bassiana >50 y ago. Here, we investigate the insecticidal, anti-feedant and immunomodulation effects of oosporein produced by Beauveria caledonica on the forestry pest Hylobius abietis and model insect Galleria mellonella. We report a novel feedback induction mechanism regulating oosporein production in B. caledonica; exogenous oosp ...
DOI:
10.1016/j.funbio.2019.01.004

5. Penicillium digitatum infection mechanisms in citrus: What do we know so far?

Author:
Costa, Jonas Henrique; Bazioli, Jaqueline Moraes; de Moraes Pontes, João Guilherme; Fill, Taícia Pacheco
Source:
Fungal biology 2019 v.123 no.8 pp. 584-593
ISSN:
1878-6146
Subject:
Agrobacterium radiobacter; Citrus; Penicillium digitatum; chemical interactions; citriculture; citrus fruits; fruits; fungi; gene targeting; genes; host range; host-pathogen relationships; hydrogen peroxide; metabolites; organic acids and salts; pH; postharvest diseases; reverse transcriptase polymerase chain reaction; secretion; virulence
Abstract:
... Penicillium digitatum is the major source of postharvest decay in citrus fruits worldwide. This fungus shows a limited host range, being able to infect mainly mature fruit belonging to the Rutaceae family. This highly specific host interaction has attracted the interest of the scientific community. Researchers have investigated the chemical interactions and specialized virulence strategies that fa ...
DOI:
10.1016/j.funbio.2019.05.004

6. The concentration and prevalence of ochratoxin A in coffee and coffee-based products: A global systematic review, meta-analysis and meta-regression

Author:
Khaneghah, Amin Mousavi; Fakhri, Yadolah; Abdi, Leili; Coppa, Carolina Fernanda Sengling Cebin; Franco, Larissa Tuanny; de Oliveira, Carlos Augusto Fernandes
Source:
Fungal biology 2019 v.123 no.8 pp. 611-617
ISSN:
1878-6146
Subject:
atmospheric precipitation; coffee products; databases; food contamination; meta-analysis; models; ochratoxin A; risk assessment; systematic review; Taiwan; Turkey (country)
Abstract:
... The current investigation was aimed to estimate the prevalence and concentration of ochratoxin A (OTA) in different types of coffee and coffee-based products with the aid of a systematic review and meta-analysis. Therefore, the recommended databases including PubMed, Scopus, and Embase from Jan 1983 to Oct 2018 were screened to retrieve the related citations. In this regard, among 1041 explored ar ...
DOI:
10.1016/j.funbio.2019.05.012

7. The fungal threat to global food security

Author:
Avery, Simon V.; Singleton, Ian; Magan, Naresh; Goldman, Gustavo H.
Source:
Fungal biology 2019 v.123 no.8 pp. 555-557
ISSN:
1878-6146
Subject:
climate change; food availability; food safety; food security; fungal growth; fungi; human population; secondary infection; socioeconomics; spoilage
Abstract:
... Fungi threaten the security of food supply to human populations on several fronts. They destroy up to 30 % of crop products through disease and spoilage processes, while mycotoxin-producing fungi and opportunistic pathogens endanger food safety. Control of these fungi is vital for improving food security, but current measures are inadequate and further challenges due to human-population growth and ...
DOI:
10.1016/j.funbio.2019.03.006

8. Trichoderma/pathogen/plant interaction in pre-harvest food security

Author:
Silva, Roberto N.; Monteiro, Valdirene Neves; Steindorff, Andrei Stecca; Gomes, Eriston Vieira; Noronha, Eliane Ferreira; Ulhoa, Cirano J.
Source:
Fungal biology 2019 v.123 no.8 pp. 565-583
ISSN:
1878-6146
Subject:
Nematoda; Oomycetes; Trichoderma; abiotic stress; agrochemicals; antibiosis; antimicrobial peptides; bacteria; biological control; biological control agents; crop production; crops; disease resistance; ecosystems; food security; harvesting; human diseases; mycoparasites; plant diseases and disorders; plant growth; plant pathogenic fungi; plantibodies; roots
Abstract:
... Large losses before crop harvesting are caused by plant pathogens, such as viruses, bacteria, oomycetes, fungi, and nematodes. Among these, fungi are the major cause of losses in agriculture worldwide. Plant pathogens are still controlled through application of agrochemicals, causing human disease and impacting environmental and food security. Biological control provides a safe alternative for the ...
DOI:
10.1016/j.funbio.2019.06.010

9. How Chassis Structure and Substrate Crystalline Direction Affect the Mobility of Thermally Driven p-Carborane-Wheeled Nanocars

Author:
Hosseini Lavasani, Seyed Mohammad; Nejat Pishkenari, Hossein; Meghdari, Ali
Source:
Journal of physical chemistry 2019 v.123 no.8 pp. 4805-4824
ISSN:
1932-7455
Subject:
adsorption; crystal structure; diffusivity; energy; gold; molecular dynamics; nanogold; nanoparticles; surface temperature; wheels
Abstract:
... In recent years, various nanocars have been synthesized in order to provide controlled mechanical function, transport other nanoparticles, or enable bottom-up assembly capability. There have even been racing competitions among well-known nanocars in which the wheels play an influential role. In this paper, the motion of thermally driven nanocars equipped with p-carborane wheels on Au(111) and Au(0 ...
DOI:
10.1021/acs.jpcc.8b10779

10. Proton Transfer and Ionicity: An ¹⁵N NMR Study of Pyridine Base Protonation

Author:
Hasani, Mohammad; Amin, Samrat A.; Yarger, Jeffery L.; Davidowski, Stephen K.; Angell, C. Austen
Source:
TheJournal of physical chemistry 2019 v.123 no.8 pp. 1815-1821
ISSN:
1520-5207
Subject:
Bronsted acids; acidity; electrolytes; gases; ionic liquids; nitrogen; nuclear magnetic resonance spectroscopy; protonation; pyridines; stable isotopes; viscosity
Abstract:
... Protic ionic liquids (PILs) are made by proton transfer from a Brønsted acid to a base and are of interest for their solvent and electrolyte properties such as high ionic conductivity. Unfortunately, many PILs have been misnamed, because their ionic content is minimal due to an insufficient driving force for the proton transfer. Here we review this problem and introduce a new method, using ¹⁵N NMR ...
DOI:
10.1021/acs.jpcb.8b10632

11. Interaction of Human α-1-Acid Glycoprotein (AGP) with Citrate-Stabilized Gold Nanoparticles: Formation of Unexpectedly Strong Binding Events

Author:
Mohammadi, Fakhrossadat; Sahraei, Amin; Li, Chengnan; Haustrate, Aurélien; Lehen’kyi, V’yacheslav; Barras, Alexandre; Boukherroub, Rabah; Szunerits, Sabine
Source:
Journal of physical chemistry 2019 v.123 no.8 pp. 5073-5083
ISSN:
1932-7455
Subject:
acute phase proteins; binding capacity; bladder; blood vessels; brain; cytotoxicity; glycoproteins; gold; humans; inflammation; kidneys; liver; nanogold; nanoparticles; physical chemistry; spleen
Abstract:
... Numerous studies have investigated the interaction of high-abundance plasma proteins with different nanostructures. In this work, we focus on the interaction of citrate-stabilized spherical gold nanoparticles (Au-CIT) with human α-1-acid glycoprotein (AGP), one of the major acute phase proteins in humans with a normal plasma concentration between 0.6 and 1.2 mg mL–¹, which can increase 4-fold in r ...
DOI:
10.1021/acs.jpcc.8b10455

12. Several Orders-of-Magnitude Enhancement of Multiphoton Absorption Property for CsPbX₃ Perovskite Quantum Dots by Manipulating Halide Stoichiometry

Author:
Pramanik, Avijit; Gates, Kaelin; Gao, Ye; Begum, Salma; Chandra Ray, Paresh
Source:
Journal of physical chemistry 2019 v.123 no.8 pp. 5150-5156
ISSN:
1932-7455
Subject:
absorption; bromides; bromine; cesium; chlorides; chlorine; engineering; fluorescence microscopy; image analysis; information storage; iodides; iodine; lead; luminescence; photochemotherapy; quantum dots; stoichiometry
Abstract:
... Two-photon absorption (2PA) and three-photon absorption (3PA) processes feature many technological applications for fluorescence microscopy, photodynamic therapy, optical data storage, and so on, Herein, we reveal that the giant 2PA and 3PA properties for all-inorganic CsPbX₃ (X = Cl, Br, I, and mixed Cl/Br and Br/I) perovskite quantum dots (PQDs) can be enhanced several orders of magnitude, respe ...
DOI:
10.1021/acs.jpcc.9b01108

13. Modeling Polaron Diffusion in Oligoacene-like Crystals

Author:
Pereira, Marcelo Lopes; de Sousa, Rafael Timóteo; e Silva, Geraldo Magela; Ribeiro, Luiz Antonio
Source:
Journal of physical chemistry 2019 v.123 no.8 pp. 4715-4720
ISSN:
1932-7455
Subject:
activation energy; ambient temperature; crystals; diffusivity; models; physical chemistry; semiconductors
Abstract:
... Due to the polaronic self-localization of carriers at one or few molecules in organic crystalline semiconductors, the net mobility of a polaron is suppressed and it becomes thermally activated. As a consequence, incoherent hopping of small or large polarons governs the charge transport mechanism, which incorporates crucial contributions of the carriers’ diffusion. Here, we develop a model Hamilton ...
DOI:
10.1021/acs.jpcc.8b11459

14. Ratiometric Optical Thermometry Based on Emission and Excitation Spectra of YVO₄:Eu³⁺ Nanophosphors

Author:
Kolesnikov, I. E.; Kalinichev, A. A.; Kurochkin, M. A.; Mamonova, D. V.; Kolesnikov, E. Yu.; Lähderanta, E.
Source:
Journal of physical chemistry 2019 v.123 no.8 pp. 5136-5143
ISSN:
1932-7455
Subject:
light intensity; luminescence; nanoparticles; physical chemistry; temperature; thermometers; uncertainty
Abstract:
... Development of new approaches to the noncontact optical thermometry is of great importance for modern science and technology. In the current work, single-phase YVO₄:Eu³⁺ nanoparticles prepared via the modified Pechini technique were studied as luminescence thermometers. Thermal sensing was performed using two different ratiometric approaches: utilizing the luminescence intensity ratio between tran ...
DOI:
10.1021/acs.jpcc.9b00284

15. Tuning the Hydrophobicity of Layer-Structure Silicates To Promote Adsorption of Nonaqueous Fluids: Effects of F– for OH– Substitution on CO₂ Partitioning into Smectite Interlayers

Author:
Loganathan, Narasimhan; Yazaydin, A. Ozgur; Kirkpatrick, R. James; Bowers, Geoffrey M.
Source:
Journal of physical chemistry 2019 v.123 no.8 pp. 4848-4855
ISSN:
1932-7455
Subject:
X-ray diffraction; adsorption; carbon dioxide; cations; energy; hydrogen; hydrophobicity; methane; models; molecular dynamics; nanopores; silicates; smectite; sodium; temperature
Abstract:
... The intercalation of nonaqueous fluids in the nanopores of organic and inorganic materials is of significant interest, particularly in the energy science community. Recently, X-ray powder diffraction and computational modeling results have shown that structural F– for OH– substitution in layered silicates makes them more hydrophobic. Here, we use grand canonical molecular dynamics calculations to ...
DOI:
10.1021/acs.jpcc.8b11296

16. Thermodynamic and Mechanical Stability of Crystalline Phases of Li₂S₂

Author:
Guo, Qing; Lau, Kah Chun; Pandey, Ravindra
Source:
Journal of physical chemistry 2019 v.123 no.8 pp. 4674-4681
ISSN:
1932-7455
Subject:
anisotropy; batteries; cathodes; chemical bonding; density functional theory; modulus of elasticity; thermodynamics; van der Waals forces
Abstract:
... In lithium–sulfur (Li–S) battery, Li₂S₂ is one of the key intermediate products which may exist as an insoluble solid in a battery system. In this article, the low-energy crystalline phases of Li₂S₂ are investigated using density functional theory coupled with the van der Waals correction terms. The calculated results find that the tetragonal, triclinic, and hexagonal phases of Li₂S₂ phases are th ...
DOI:
10.1021/acs.jpcc.8b11290

17. N-Methylacetamide Aqueous Solutions: A Neutron Diffraction Study

Author:
Di Gioacchino, Michael; Bruni, Fabio; Ricci, Maria Antonietta
Source:
TheJournal of physical chemistry 2019 v.123 no.8 pp. 1808-1814
ISSN:
1520-5207
Subject:
Monte Carlo method; aqueous solutions; glutathione; hydrogen bonding; neutron diffraction; proteins; tripeptides
Abstract:
... The hydration of N-methylacetamide (NMA) in solution has been determined by neutron diffraction with isotopic Hydrogen/Deuterium substitution (NDIS), augmented by Monte Carlo simulation. This study is representative of the hydration of the peptide bonds characteristic of proteins and might shed light on aggregation phenomena in intrinsically disordered proteins. It is found that NMA forms hydrogen ...
DOI:
10.1021/acs.jpcb.9b00246

18. Intramolecular Singlet Fission in Quinoidal Dihydrothiophene

Author:
Bhattacharyya, Kalishankar; Dey, Dayasindhu; Datta, Ayan
Source:
Journal of physical chemistry 2019 v.123 no.8 pp. 4749-4754
ISSN:
1932-7455
Subject:
density functional theory; physical chemistry; potential energy; quantum mechanics; solar cells
Abstract:
... Singlet fission (SF) provides a promising mechanistic pathway to overcome the Shockley–Queisser limit of solar cell efficiencies. There are hardly handful of molecules which are known to exhibit intramolecular SF (iSF). Most of the investigated iSF systems based on the donor/acceptor architectures have low-lying triplet-state energies which cause serious limitation for efficient opto-electronic de ...
DOI:
10.1021/acs.jpcc.9b00230

19. Effective Interactions between Calcium-Silicate-Hydrate Nanolayers

Author:
Masoumi, Saeed; Zare, Siavash; Valipour, Hamid; Abdolhosseini Qomi, Mohammad Javad
Source:
Journal of physical chemistry 2019 v.123 no.8 pp. 4755-4766
ISSN:
1932-7455
Subject:
Gibbs free energy; chemical composition; cohesion; concrete; engineering; mechanical properties; physical chemistry; texture
Abstract:
... Calcium-silicate-hydrate (C-S-H), the main binding phase in cementitious materials, possesses a complex multiscale porous texture where nanosized particles interact effectively and contribute to the macroscopic properties of concrete. Engineering the morphology and properties of cementitious materials can thus be obtained by, first, studying the impact of the variable chemical composition on the c ...
DOI:
10.1021/acs.jpcc.8b08146

20. Ligand-Triggered Tunable Charge Transfer toward Multifarious Photoreduction Catalysis

Author:
Li, Tao; Li, Yu-Bing; Dai, Xiao-Cheng; Huang, Ming-Hui; He, Yunhui; Xiao, Guangcan; Xiao, Fang-Xing
Source:
Journal of physical chemistry 2019 v.123 no.8 pp. 4701-4714
ISSN:
1932-7455
Subject:
active sites; electrons; energy conversion; heavy metals; hydrogen production; irradiation; ligands; metal ions; motivation; nanocrystals; nanowires; nitroaromatic compounds; photocatalysis; semiconductors; solar energy
Abstract:
... Metal/semiconductor heterostructures have been arousing persistent interest on account of prominent roles of metal nanocrystals (NCs) in modulating charge transfer in photocatalysis. It has been generally accepted that ligands capped on the tailor-made metal NC surfaces should be removed for exposing more active sites, and the interface between the metal and semiconductor should be clean enough to ...
DOI:
10.1021/acs.jpcc.8b11363