9,466 results match your criteria Biocontrol Science And Technology[Journal]


Effect of EZH2 knockdown on preimplantation development of porcine parthenogenetic embryos.

Theriogenology 2019 Apr 14;132:95-105. Epub 2019 Apr 14.

State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China. Electronic address:

The EZH2 protein endows the polycomb repressive complex 2 (PRC2) with histone lysine methyltransferase activity that is associated with transcriptional repression. Recent investigations have documented crucial roles for EZH2 in mediating X-inactivation, stem cell pluripotency and cancer metastasis. However, there is little evidence demonstrating the maternal effect of EZH2 on porcine preimplantation development. Read More

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http://dx.doi.org/10.1016/j.theriogenology.2019.04.007DOI Listing

Effects of dietary hydrolyzed yeast (Rhodotorula mucilaginosa) on growth performance, immune response, antioxidant capacity and histomorphology of juvenile Nile tilapia (Oreochromis niloticus).

Fish Shellfish Immunol 2019 Apr 17. Epub 2019 Apr 17.

State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animal and Guangdong Province Key Laboratory for Aquatic Economic Animals, School of Life Science, Sun Yat-sen University, Guangzhou, 510275, PR China. Electronic address:

An 8 weeks feeding experiment was conducted to evaluate the effects of dietary supplementation with hydrolyzed yeast (HY) (Rhodotorula mucilaginosa) on growth performance, hematological parameters, immune response and antioxidant ability of juvenile Nile tilapia. Five isonitrogenous and isolipidic diets (32% protein and 4% lipid) with different levels (0%, 0.125%, 0. Read More

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http://dx.doi.org/10.1016/j.fsi.2019.03.068DOI Listing

Metabolic mechanisms and acetylcholinesterase sensitivity involved in tolerance to chlorpyrifos-ethyl in the earwig Forficula auricularia.

Chemosphere 2019 Apr 11;227:416-424. Epub 2019 Apr 11.

Avignon University, Aix Marseille Univ, CNRS, IRD, IMBE, Pôle Agrosciences, 301 rue Baruch de Spinoza, BP 21239, 84916, Avignon, France.

Apple orchards are highly treated crops, in which organophosphorus (OP) are among the most heavily sprayed insecticides. These pesticides are toxic to non-target arthropods and their repeated use increases the risk of resistance. We studied mechanisms involved in tolerance and resistance to OP insecticides in the earwig Forficula auricularia, an effective generalist predator in pomefruit orchards. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.04.065DOI Listing

Tobacco Growth Promotion by the Entomopathogenic Fungus, pf185.

Mycobiology 2019 Mar 19;47(1):126-133. Epub 2019 Jan 19.

Department of Applied Biology, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, Republic of Korea.

pf185 is an important entomopathogenic fungus with potential for use as an agricultural biocontrol agent. However, the effect of pf185 on plant growth is unknown. Enhanced tobacco growth was observed when tobacco roots were exposed to spores, cultures, and fungal cell-free culture supernatants of this fungus. Read More

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http://dx.doi.org/10.1080/12298093.2018.1562692DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6452915PMC

Comparative Transcriptome Analysis Reveals the Biocontrol Mechanism of F21 Against Wilt on Watermelon.

Front Microbiol 2019 3;10:652. Epub 2019 Apr 3.

Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University - Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Agriculture - Engineering Center of Bioresource Pesticides in Jiangsu Province, Nanjing, China.

The watermelon () is one of the most important horticultural crops for fruit production worldwide. However, the production of watermelon is seriously restricted by one kind of soilborne disease, wilt, which is caused by f. sp. Read More

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http://dx.doi.org/10.3389/fmicb.2019.00652DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6456681PMC

Isolation and characterisation of pVa-21, a giant bacteriophage with anti-biofilm potential against Vibrio alginolyticus.

Sci Rep 2019 Apr 18;9(1):6284. Epub 2019 Apr 18.

Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea.

There is an increasing emergence of antibiotic-resistant Vibrio alginolyticus, a zoonotic pathogen that causes mass mortality in aquatic animals and infects humans; therefore, there is a demand for alternatives to antibiotics for the treatment and prevention of infections caused by this pathogen. One possibility is through the exploitation of bacteriophages. In the present study, the novel bacteriophage pVa-21 was classified as Myoviridae and characterised as a candidate biocontrol agent against V. Read More

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http://www.nature.com/articles/s41598-019-42681-1
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http://dx.doi.org/10.1038/s41598-019-42681-1DOI Listing
April 2019
1 Read

A thermostable chitinase from the antagonistic Chromobacterium violaceum that inhibits the development of phytopathogenic fungi.

Enzyme Microb Technol 2019 Jul 1;126:50-61. Epub 2019 Apr 1.

Laboratório de Genética Molecular, Departamento de Biologia, Centro de Ciências, UFC, Fortaleza, CE, Brazil. Electronic address:

The biocontrol activity of some soil strains of Chromobacterium sp. against pathogenic fungi has been attributed to secreted chitinases. The aim of this work was to characterize biochemically a recombinant chitinase (CvChi47) from C. Read More

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http://dx.doi.org/10.1016/j.enzmictec.2019.03.009DOI Listing

Comparative Transcriptomic Studies on a Cadmium Hyperaccumulator and Its Non-Tolerant Counterpart .

Int J Mol Sci 2019 Apr 17;20(8). Epub 2019 Apr 17.

State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China.

Many plants growing in mining areas exhibit high levels of cadmium (Cd) tolerance and accumulation, and thus are ideal organisms for comparative studies on molecular mechanisms of Cd hyperaccumulation. However, transcriptomic studies of hyperaccumulative plants in Violaceae are rare. is an amazing Cd hyperaccumulator in metalliferous areas of China, whereas its relative is a non-tolerant accumulator that resides at non-metalliferous sites. Read More

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http://dx.doi.org/10.3390/ijms20081906DOI Listing

Overexpression of the Melatonin Synthesis-Related Gene Improves the Resistance of Tomato to Salt Stress.

Molecules 2019 Apr 17;24(8). Epub 2019 Apr 17.

Biocontrol Engineering Research Center of Plant Disease & Pest, Yunnan University, Kunming 650504, China.

Melatonin can increase plant resistance to stress, and exogenous melatonin has been reported to promote stress resistance in plants. In this study, a melatonin biosynthesis-related gene was cloned from tomato ( Mill. cv. Read More

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https://www.mdpi.com/1420-3049/24/8/1514
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http://dx.doi.org/10.3390/molecules24081514DOI Listing
April 2019
1 Read

A JAK-STAT pathway target gene encoding a single WAP domain (SWD)-containing protein from Litopenaeus vannamei.

Fish Shellfish Immunol 2019 Apr 15;89:555-563. Epub 2019 Apr 15.

MOE Key Laboratory of Aquatic Product Safety, State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China; South China Sea Resource Exploitation and Protection Collaborative Innovation Center (SCS-REPIC), Guangzhou, PR China. Electronic address:

In shrimp, the JAK-STAT pathway is essentially implicated in both antiviral and antibacterial responses. However, few regulatory target genes of the JAK-STAT pathway in shrimp have been reported so far. In this study, a novel single WAP domain-containing peptide (LvSWD4) was identified from Pacific white shrimp Litopenaeus vannamei. Read More

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http://dx.doi.org/10.1016/j.fsi.2019.04.046DOI Listing

Co-occurrence analysis reveal that biotic and abiotic factors influence soil fungistasis against Fusarium graminearum.

FEMS Microbiol Ecol 2019 Apr 18. Epub 2019 Apr 18.

Université de Brest, EA 3882, Laboratoire Universitaire de Biodiversité et Écologie Microbienne, IBSAM, ESIAB, Technopôle Brest-Iroise, 29280 Plouzané, France.

The current study determined the levels of soil fungistasis against a soil-borne pathogen inoculum, Fusarium graminearum (Fg, a major causal agent of Fusarium Head Blight (FHB)), in 31 wheat fields by quantifying Fg growth after a 15-day incubation period using qPCR in autoclaved versus non-autoclaved soils. The results were used to define the six most Fg-resistant and the six most Fg-conducive soils. By using a metabarcoding approach, the diversity of the bacterial communities was significantly higher in Fg-resistant soils than in Fg-conducive soils. Read More

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https://academic.oup.com/femsec/advance-article/doi/10.1093/
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http://dx.doi.org/10.1093/femsec/fiz056DOI Listing
April 2019
1 Read

Tunicates as a biocontrol tool for larvicides acute toxicity of Zika virus vector .

3 Biotech 2019 May 9;9(5):172. Epub 2019 Apr 9.

4Department of Zoology, Ryan Institute, School of Natural Science, National University of Ireland, Galway, Ireland.

In this present study, we conducted untargeted metabolic profiling using gas chromatography-mass spectrometry (GC-MS) analysis of ascidian to assess the chemical constituents by searching in NIST library with promising biological properties against anti-bacterial and Zika virus vector mosquitocidal properties. Metabolites, steroids and fatty acids are abundant in crude compounds of ascidian and showed potential zone growth inhibition against bacterial strains (10 mm). The active crude compounds of exhibited prominent larvicidal activity against the Zika vector mosquitoes of (LC values of 0. Read More

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http://dx.doi.org/10.1007/s13205-019-1699-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6456632PMC

Hymenoptera Complex Associated with and spp. in Peach Orchards in Northeastern Spain and Prospects for Biological Control of Aphids.

Insects 2019 Apr 16;10(4). Epub 2019 Apr 16.

Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Ctra de Cabrils Km 2, 08348 Cabrils, Barcelona, Spain.

Aphids are a serious pest for peach crops. They have traditionally been managed with insecticides, but there is increasing concern about the risk that insecticides pose to both humans and the environment. As a first step to use biological control in aphid management, we conducted a 3-year field survey in northeastern Spain to determine which parasitoids and hyperparasitoids were most prevalent on two aphids, (Sulzer) and spp. Read More

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http://dx.doi.org/10.3390/insects10040109DOI Listing

miRNA-210-3p regulates trophoblast proliferation and invasiveness through fibroblast growth factor 1 in selective intrauterine growth restriction.

J Cell Mol Med 2019 Apr 16. Epub 2019 Apr 16.

Department of Obstetrics and Gynecology, Fetal Medicine Center, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China.

Selective intrauterine growth restriction (sIUGR), which affects approximately 10%-15% of monochorionic (MC) twin pregnancies, is highly associated with intrauterine foetal death and neurological impairment in both twins. Data suggest that unequal sharing of the single placenta is the main contributor to birth weight discordance. While MC twins and their placenta derive from a single zygote and harbour almost identical genetic material, the underlying mechanisms of phenotypic discrepancies in MC twins remain unclear. Read More

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http://dx.doi.org/10.1111/jcmm.14335DOI Listing
April 2019
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Phosphotyrosine-dependent interaction between the kinases PKCθ and Zap70 promotes proximal TCR signaling.

Sci Signal 2019 Apr 16;12(577). Epub 2019 Apr 16.

Division of Cell Biology, La Jolla Institute for Immunology, La Jolla, CA 92037, USA.

Protein kinase C-θ (PKCθ) is an important component of proximal T cell receptor (TCR) signaling. We previously identified the amino-terminal C2 domain of PKCθ as a phosphotyrosine (pTyr)-binding domain. Using a mutant form of PKCθ that cannot bind pTyr (PKCθ), we showed that pTyr binding by PKCθ was required for TCR-induced T cell activation, proliferation, and T2 cell differentiation but not for T cell development. Read More

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http://dx.doi.org/10.1126/scisignal.aar3349DOI Listing

[Isolation,screening and identification of endophytic fungi and detection of its antifungal effects against Alternaria panax].

Zhongguo Zhong Yao Za Zhi 2019 Jan;44(2):274-277

Institute of Special Wild Economic Animals and Plants,Chinese Academy of Agricultural Sciences Changchun 130112,China.

To obtain biocontrol fungus for Alternaria panax,the antifungal effects of one strain of endophytic fungi isolated from leaves of healthy ginseng were screened and evaluated by using dual-culture method,and the taxonomic assignment of the screened strain was identified based on the morphological characters and ITS sequence analysis. The results of dual-culture showed that one of the endophytes marked as FS-01 had good antifungal effects and the inhibitory rates of FS-01 strain to A. panax was( 60. Read More

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http://dx.doi.org/10.19540/j.cnki.cjcmm.20181106.003DOI Listing
January 2019

Identification and development of microsatellite (SSRs) makers of Exbucklandia (HAMAMELIDACEAE) by high-throughput sequencing.

Mol Biol Rep 2019 Apr 15. Epub 2019 Apr 15.

State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, Sun Yat-sen University, Guangzhou, 510275, China.

Hamamelidaceae (Saxifragales, previously Rosales) comprises approximately six subfamily, 30 genera and 140 species, most of which are Tertiary relicts. Exbucklandia is the only genus of the subfamily Exbucklandioideae, Hamelidaceae, containing only 2-4 species. Of them, the species E. Read More

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http://dx.doi.org/10.1007/s11033-019-04800-zDOI Listing

Electrospun microbial-encapsulated composite based plasticized seed-coat for rhizosphere stabilization and sustainable production of canola (Brassica napus L.).

J Agric Food Chem 2019 Apr 15. Epub 2019 Apr 15.

Plant growth-promoting bacteria show promises in crop production, nevertheless, innovation in their stable delivery is required for practical use by farmers. Herein, the composite of poly(vinyl alcohol)/poly(vinylpyrrolidone) plasticized with glycerol and loaded with the microbial consortium (Bacillus subtilis plus Seratia marcescens) was fabricated and engineered onto canola (Brassica napus L.) seed via electrospinning. Read More

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http://dx.doi.org/10.1021/acs.jafc.8b06505DOI Listing

Bioactive Products From Plant-Endophytic Gram-Positive Bacteria.

Front Microbiol 2019 29;10:463. Epub 2019 Mar 29.

Departamento de Microbiología e Inmunología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Mexico.

Endophytes constitute plant-colonizing microorganisms in a mutualistic symbiosis relationship. They are found in most ecosystems reducing plant crops' biotic and abiotic stressors by stimulating immune responses, excluding plant pathogens by niche competition, and participating in antioxidant activities and phenylpropanoid metabolism, whose activation produces plant defense, structural support, and survival molecules. In fact, metabolomic studies have demonstrated that endophyte genes associated to specific metabolites are involved in plant growth promotion (PGP) by stimulating plant hormones production such as auxins and gibberellins or as plant protective agents against microbial pathogens, cancer, and insect pests, but eco-friendly and eco-safe. Read More

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https://www.frontiersin.org/article/10.3389/fmicb.2019.00463
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http://dx.doi.org/10.3389/fmicb.2019.00463DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6449470PMC
March 2019
5 Reads

Hydrophobin HFBII-4 from Trichoderma asperellum induces antifungal resistance in poplar.

Braz J Microbiol 2019 Apr 13. Epub 2019 Apr 13.

School of Forestry, Northeast Forestry University, 26 Hexing Road, Harbin, 150040, China.

Herein, the class II hydrophobin gene HFBII-4 was cloned from the biocontrol agent Trichoderma asperellum ACCC30536 and recombinant rHFBII-4 was expressed in Pichia pastoris GS115. Treatment of Populus davidiana × P. alba var. Read More

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http://link.springer.com/10.1007/s42770-019-00083-5
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http://dx.doi.org/10.1007/s42770-019-00083-5DOI Listing
April 2019
2 Reads

Carbon-substrate utilization profiles by Cladorrhinum (Ascomycota).

Rev Argent Microbiol 2019 Apr 10. Epub 2019 Apr 10.

Instituto de Microbiología y Zoología Agrícola, Instituto Nacional de Tecnología Agropecuaria, CC 25 (1712) Castelar, Buenos Aires, Argentina.

Fungi from the genus Cladorrhinum (Ascomycota) are promising agents in the biocontrol of phytopathogens, in the promotion of plant growth, and in the production of enzymes with technological application. We analyzed comparatively the ability of 5 native strains of Cladorrhinum samala and Cladorrhinum bulbillosum with reference strains belonging to the same genus. We used 95 individual carbon sources available in microplates from the Biolog® FF system. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S03257541183012
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http://dx.doi.org/10.1016/j.ram.2018.09.005DOI Listing
April 2019
2 Reads

Identification of an endo-chitinase from Corallococcus sp. EGB and evaluation of its antifungal properties.

Int J Biol Macromol 2019 Apr 10;132:1235-1243. Epub 2019 Apr 10.

Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Science, Nanjing Agricultural University, Nanjing 210095, PR China. Electronic address:

As the main component of the fungal cell wall, chitin has been regarded as an optimal molecular target for the biocontrol of plant-pathogenic fungi. In this study, the chitin hydrolase CcCti1, which belongs to the glycoside hydrolase family 18 (GH 18) and exhibits potential antifungal activity, was identified from Corallococcus sp. EGB. Read More

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http://dx.doi.org/10.1016/j.ijbiomac.2019.04.056DOI Listing
April 2019
2.858 Impact Factor

Verifying the biocontrol activity of novel film-forming formulations of Candida sake CPA-1: resilience in relation to environmental factors, rainfall episodes, and control of Botrytis cinerea on different hosts.

J Sci Food Agric 2019 Apr 13. Epub 2019 Apr 13.

IRTA, XaRTA-Postharvest, Edifici Fruitcentre, Parc Científic i Tecnològic Agroalimentari de Lleida, 25003, Lleida, Catalonia, Spain.

Background: The efficacy of C. sake CPA-1 as a biocontrol agent against several diseases has been studied since it was isolated twenty years ago. However, it was only recently that two suitable and effective film-forming formulations based on potato starch and maltodextrins were developed by the fluidised-bed spray-drying system. Read More

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http://dx.doi.org/10.1002/jsfa.9731DOI Listing

Biofilm formation and synthesis of antimicrobial compounds by the biocontrol agent QST713 in compost micromodel.

Appl Environ Microbiol 2019 Apr 12. Epub 2019 Apr 12.

Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, 78350 Jouy-en-Josas, France.

QST713 is widely used as a biological control agent for crop protection and disease suppression. This strain is used industrially in France for the protection of against f. , the green mould disease. Read More

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http://dx.doi.org/10.1128/AEM.00327-19DOI Listing

Data on draft genome sequence of sp. strain VKPM B-3276 isolated from larvae.

Data Brief 2019 Jun 7;24:103757. Epub 2019 Mar 7.

National Research Center "Kurchatov Institute", Moscow, 123182, Russia.

The draft genome sequence of sp. VKPM B-3276, a mesophilic, gram-positive bacterium, isolated from dead larvae is presented. This strain was deposited in the Russian National Collection of Industrial Microorganisms as a prospective candidate for development of new entomopathogenic agents. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S23523409193010
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http://dx.doi.org/10.1016/j.dib.2019.103757DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6441799PMC
June 2019
1 Read

Comparative genomic analysis of Bacillus paralicheniformis MDJK30 with its closely related species reveals an evolutionary relationship between B. paralicheniformis and B. licheniformis.

BMC Genomics 2019 Apr 11;20(1):283. Epub 2019 Apr 11.

College of Life Sciences / National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources / Shandong Key Laboratory of Agricultural Microbiology, Shandong Agricultural University, Tai'an, People's Republic of China.

Background: Members of the genus Bacillus are important plant growth-promoting rhizobacteria that serve as biocontrol agents. Bacillus paralicheniformis MDJK30 is a PGPR isolated from the peony rhizosphere and can suppress plant-pathogenic bacteria and fungi. To further uncover the genetic mechanism of the plant growth-promoting traits of MDJK30 and its closely related strains, we used comparative genomics to provide insights into the genetic diversity and evolutionary relationship between B. Read More

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http://dx.doi.org/10.1186/s12864-019-5646-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6458615PMC

To what extent may peptide receptor gene diversity/complement contribute to functional flexibility in a simple pattern-generating neural network?

Comp Biochem Physiol Part D Genomics Proteomics 2019 Mar 7;30:262-282. Epub 2019 Mar 7.

Békésy Laboratory of Neurobiology, Pacific Biosciences Research Center, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, 1993 East-West Road, Honolulu, HI 96822, USA. Electronic address:

Peptides are known to contribute to central pattern generator (CPG) flexibility throughout the animal kingdom. However, the role played by receptor diversity/complement in determining this functional flexibility is not clear. The stomatogastric ganglion (STG) of the crab, Cancer borealis, contains CPGs that are models for investigating peptidergic control of rhythmic behavior. Read More

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http://dx.doi.org/10.1016/j.cbd.2019.03.002DOI Listing
March 2019
1 Read

Scavenging behavior and interspecific competition decrease offspring fitness of the entomopathogenic nematode Steinernema feltiae.

J Invertebr Pathol 2019 Apr 8;164:5-15. Epub 2019 Apr 8.

MeditBio, Centre for Mediterranean Bioresources and Food, Universidade do Algarve, Campus de Gambelas, 8005 Faro, Portugal; Instituto de Ciencias de la Vid y del Vino (CSIC, Universidad de La Rioja, Gobierno de La Rioja), Finca La Grajera, 26007 Logroño, Spain. Electronic address:

Entomopathogenic nematodes (EPNs) are well-studied biocontrol agents of soil-dwelling arthropod pests. The insecticidal efficiency of EPNs is modulated by food web dynamics. EPNs can reproduce in freeze-killed insect larvae, even in competition with free-living bacterivorous nematodes (FLBNs) in the genus Oscheius. Read More

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http://dx.doi.org/10.1016/j.jip.2019.04.002DOI Listing

Non-target effects of herbicides on Tetranychus urticae and its predator, Phytoseiulus persimilis: implications for biological control.

Pest Manag Sci 2019 Apr 10. Epub 2019 Apr 10.

Clemson University, Coastal Research and Education Center, 2700 Savannah Highway, Charleston, SC, 29414.

Background: A key element of conservation biocontrol is identifying and limiting use of pesticides that have substantial non-target effects on natural enemies to prevent biocontrol disruption. The Phytoseiidae (predatory mites) are one of the most studied natural enemy groups in the field of pesticide non-target effects. While there is substantial research on the non-target effects of insecticides on arthropod natural enemies, research on herbicide impacts is limited. Read More

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https://onlinelibrary.wiley.com/doi/abs/10.1002/ps.5443
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http://dx.doi.org/10.1002/ps.5443DOI Listing
April 2019
5 Reads

Transposon molecular domestication and the evolution of the RAG recombinase.

Nature 2019 Apr 10. Epub 2019 Apr 10.

Department of Immunobiology, Yale School of Medicine, New Haven, CT, USA.

Domestication of a transposon (a DNA sequence that can change its position in a genome) to give rise to the RAG1-RAG2 recombinase (RAG) and V(D)J recombination, which produces the diverse repertoire of antibodies and T cell receptors, was a pivotal event in the evolution of the adaptive immune system of jawed vertebrates. The evolutionary adaptations that transformed the ancestral RAG transposase into a RAG recombinase with appropriately regulated DNA cleavage and transposition activities are not understood. Here, beginning with cryo-electron microscopy structures of the amphioxus ProtoRAG transposase (an evolutionary relative of RAG), we identify amino acid residues and domains the acquisition or loss of which underpins the propensity of RAG for coupled cleavage, its preference for asymmetric DNA substrates and its inability to perform transposition in cells. Read More

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http://dx.doi.org/10.1038/s41586-019-1093-7DOI Listing
April 2019
3 Reads

Enhanced production of antifungal lipopeptide iturin A by Bacillus amyloliquefaciens LL3 through metabolic engineering and culture conditions optimization.

Microb Cell Fact 2019 Apr 10;18(1):68. Epub 2019 Apr 10.

Key Laboratory of Molecular Microbiology and Technology for Ministry of Education, Nankai University, Tianjin, 300071, China.

Background: Iturins, which belong to antibiotic cyclic lipopeptides mainly produced by Bacillus sp., have the potential for application in biomedicine and biocontrol because of their hemolytic and antifungal properties. Bacillus amyloliquefaciens LL3, isolated previously by our lab, possesses a complete iturin A biosynthetic pathway as shown by genomic analysis. Read More

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http://dx.doi.org/10.1186/s12934-019-1121-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6457013PMC

Foraging behavior of Aphidius matricariae (Hymenoptera: Braconidae) on tobacco aphid, Myzus persicae nicotianae (Hemiptera: Aphididae).

Bull Entomol Res 2019 Apr 10:1-9. Epub 2019 Apr 10.

Department of Entomology,Faculty of Agriculture,Tarbiat Modares University,P.O. Box 14115-336 Tehran,Iran.

The aim of this study was to investigate the foraging behavior of Aphidius matricariae (Haliday) (Hymenoptera: Braconidae) as a biological control agent of Myzus persicae nicotianae Blackman (Hemiptera: Aphididae), a key and cosmopolitan pest of tobacco fields. To achieve a strategy for the control of this pest and a mass-rearing program of the parasitoid, host stage preference, switching, functional response, and mutual interference of A. matricariae were investigated at 25 ± 1°C, 70 ± 5% RH and 16:8 h L:D photoperiod. Read More

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http://dx.doi.org/10.1017/S0007485319000166DOI Listing

Pest kill rate as aggregate evaluation criterion to rank biological control agents: a case study with Neotropical predators of Tuta absoluta on tomato.

Bull Entomol Res 2019 Apr 10:1-9. Epub 2019 Apr 10.

Biometris, Department of Mathematical and Statistical Methods,Wageningen University,P.O. Box 16, Wageningen 6700 AA,The Netherlands.

Tuta absoluta (Meyrick), a key pest of tomato, is quickly spreading over the world and biological control is considered as one of the control options. Worldwide more than 160 species of natural enemies are associated with this pest, and an important challenge is to quickly find an effective biocontrol agent from this pool of candidate species. Evaluation criteria for control agents are presented, with the advantages they offer for separating potentially useful natural enemies from less promising ones. Read More

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http://dx.doi.org/10.1017/S0007485319000130DOI Listing

Whole RNA-sequencing and gene expression analysis of Trichoderma harzianum Tr-92 under chlamydospore-producing condition.

Genes Genomics 2019 Apr 9. Epub 2019 Apr 9.

Biology Institute, Hebei Academy of Sciences, Shijiazhuang, 050081, People's Republic of China.

Background: Trichoderma is one of the most important biocontrol fungi, which could produce mycelia, conidiospores, and chlamydospores three types of propagules under different conditions. Chlamydospores are produced in harsh conditions in various fungi, and may be more resistant to adverse conditions. However, the knowledge associated with the mechanism of chlamydospore formation remained unclear in Trichoderma. Read More

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http://dx.doi.org/10.1007/s13258-019-00812-yDOI Listing

Signal pathways involved in microbe-nematode interactions provide new insights into the biocontrol of plant-parasitic nematodes.

Philos Trans R Soc Lond B Biol Sci 2019 Mar;374(1767):20180317

1 State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan and The Key Laboratory for Southwest Microbial Diversity of the Ministry of Education, Yunnan University , Kunming 650091 , People's Republic of China.

Plant-parasitic nematodes (PPNs) cause severe damage to agricultural crops worldwide. As most chemical nematicides have negative environmental side effects, there is a pressing need for developing efficient biocontrol methods. Nematophagous microbes, the natural enemies of nematodes, are potential biocontrol agents against PPNs. Read More

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http://dx.doi.org/10.1098/rstb.2018.0317DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6367146PMC

Invisible signals from the underground: A practical method to investigate the effect of microbial volatile organic compounds emitted by rhizobacteria on plant growth.

Biochem Mol Biol Educ 2019 Apr 9. Epub 2019 Apr 9.

Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, RN36 601, Río Cuarto, Córdoba, Argentina.

Rhizobacteria that colonize plant roots and promote plant growth are referred to as plant growth-promoting rhizobacteria, and this can stimulate plant growth either indirectly or directly. Volatile organic compounds (VOCs) emitted by rhizobacteria have the capacity to promote plant growth as well as perform biocontrol of fungal pathogens. The microbial volatile organic compounds (mVOCs) are characterized by a low molecular weight and a high vapor pressure, which facilitate evaporation and diffusion at normal temperatures and at above-ground and below-ground pressures. Read More

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http://dx.doi.org/10.1002/bmb.21243DOI Listing

Harman and norharman, metabolites of the entomopathogenic fungus (Entomophthorales), affect the serotonin levels and phagocytic activity of hemocytes, insect immunocompetent cells, in (Lepidoptera).

Cell Biosci 2019 25;9:29. Epub 2019 Mar 25.

1Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warsaw, Poland.

Background: Although the β-carboline alkaloids harman and norharman are considered as plant metabolites, they can also be secreted by fungi such as the entomopathogen . Norharman and harman are also known to be reversible competitive monamine oxidase inhibitors, which increase serotonin concentrations in tissues. In addition, these alkaloids are able to bind to serotonin receptors, an important immune regulatory molecule in both vertebrates and invertebrates. Read More

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http://dx.doi.org/10.1186/s13578-019-0291-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6434831PMC

Insights into ecological role of a new deltaproteobacterial order Candidatus Acidulodesulfobacterales by metagenomics and metatranscriptomics.

ISME J 2019 Apr 8. Epub 2019 Apr 8.

School of Life Sciences, South China Normal University, 510631, Guangzhou, China.

Several abundant but yet uncultivated bacterial groups exist in extreme iron- and sulfur-rich environments, and the physiology, biodiversity, and ecological roles of these bacteria remain a mystery. Here we retrieved four metagenome-assembled genomes (MAGs) from an artificial acid mine drainage (AMD) system, and propose they belong to a new deltaproteobacterial order, Candidatus Acidulodesulfobacterales. The distribution pattern of Ca. Read More

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http://dx.doi.org/10.1038/s41396-019-0415-yDOI Listing
April 2019
9.302 Impact Factor

Polyhydroxyalkanoate (PHA) Polymer Accumulation and Gene Expression in Phenazine (phz⁻) and Pyrrolnitrin (prn⁻) Defective Mutants of PA23.

Polymers (Basel) 2018 Oct 27;10(11). Epub 2018 Oct 27.

Department of Biosystems Engineering, University of Manitoba, Winnipeg, MB R3T 5V6, Canada.

PA23 was isolated from the rhizosphere of soybeans and identified as a biocontrol bacterium against , a fungal plant pathogen This bacterium produces a number of secondary metabolites, including phenazine-1-carboxylic acid, 2-hydroxyphenazine, pyrrolnitrin (PRN), hydrogen cyanide, proteases, lipases and siderophores. It also synthesizes and accumulates polyhydroxyalkanoate (PHA) polymers as carbon and energy storage compounds under nutrient-limited conditions. Pseudomonads like metabolize glucose via the Entner-Doudoroff and Pentose Phosphate pathways, which provide precursors for phenazine production. Read More

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http://dx.doi.org/10.3390/polym10111203DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6290614PMC
October 2018
2.505 Impact Factor

New R-Based Methodology to Optimize the Identification of Root Endophytes against .

Microorganisms 2019 Apr 6;7(4). Epub 2019 Apr 6.

Forest Pathology Research Group, Büsgen-Institute, Department of Forest Botany and Tree Physiology, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, Büsgenweg 2, 37077 Göttingen, Germany.

Many root fungal endophytes inhabiting forest trees have potential impact on the health and disease progression of certain tree species. Hence, the screening of root endophytes for their biocontrol abilities is relevant for their potential to protect their hosts against invaders. The aim of this research is to screen for the potential inhibitory effects of selected conifer root endophytes during interaction, in vitro, with the root rot pathogen, . Read More

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http://dx.doi.org/10.3390/microorganisms7040102DOI Listing

Lysis Profiles of Phages on Isolates from Various Sources and Efficiency of a Phage Cocktail against Enteritidis and Typhimurium.

Microorganisms 2019 Apr 5;7(4). Epub 2019 Apr 5.

Department of Food Technology, Prince of Songkla University, Hat Yai 90112, Thailand.

serovar Enteritidis and serovar Typhimurium are major foodborne pathogens of concern worldwide. Bacteriophage applications have gained more interest for biocontrol in foods. This study isolated 36 phages from several animal farms in Thailand and tested them on 47 strains from several sources, including farms, seafood processing plant and humans in Thailand and USA. Read More

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https://www.mdpi.com/2076-2607/7/4/100
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http://dx.doi.org/10.3390/microorganisms7040100DOI Listing
April 2019
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Novosphingobium meiothermophilum sp. nov., isolated from a hot spring.

Int J Syst Evol Microbiol 2019 Apr 8. Epub 2019 Apr 8.

1​State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China.

A moderately thermophilic, aerobic, Gram-stain-negative, non-spore-forming, rod-shaped and yellow-pigmented bacterium, designated strain SYSU G00007, was isolated from a hot spring slurry sample. Optimum growth was observed at 37-45 °C and pH 7. Pairwise comparison of the 16S rRNA gene sequence of strain SYSU G00007 and other Novosphingobium species showed sequence similarities ranging from 93. Read More

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http://dx.doi.org/10.1099/ijsem.0.003384DOI Listing

Discovery and Biosynthesis of Atrovimycin, an Antitubercular and Antifungal Cyclodepsipeptide Featuring Vicinal-dihydroxylated Cinnamic Acyl Chain.

Org Lett 2019 Apr 8;21(8):2634-2638. Epub 2019 Apr 8.

CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , Guangzhou 510301 , China.

Atrovimycin (1), a cyclodepsipeptide containing a unique vicinal-hydroxylated cinnamic acyl chain, was isolated and elucidated from Streptomyces atrovirens LQ13. The biosynthetic pathway of 1 was achieved, revealing cytochrome P450 (Avm43) and epoxide hydrolase (Avm29) enzymes constructing the vicinal-dihydroxy substitution, as well as a tailoring P450 (Avm28) enzyme catalyzing β-hydroxylation of the l-Phe moiety. Atrovimycin shows in vitro antifungal activity and antitubercular activity against Mycobacterium tuberculosis H37Rv both in vitro (with MIC of 2. Read More

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http://dx.doi.org/10.1021/acs.orglett.9b00618DOI Listing

Effect of CaCl and Various Wild Yeasts From Plant Origin on Controlling Postharvest Decays in Golden Delicious Apples.

Microbiol Insights 2019 29;12:1178636119837643. Epub 2019 Mar 29.

Northeast Food and Feed Laboratory, Office of Regulatory Affairs, U.S. Food and Drug Administration, Jamaica, NY, USA.

The biocontrol potential of four wild yeast strains ( - strain YS-1, - strain YS-3, - strain YS-4, and sp. - strain YS-5) against was studied (on Golden Delicious apples). The test yeasts were applied to the fruits alone as well as in combination with 2% CaCl. Read More

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http://dx.doi.org/10.1177/1178636119837643DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6442072PMC

Advance in Cordyceps militaris (Linn) Link polysaccharides: Isolation, structure, and bioactivities: A review.

Int J Biol Macromol 2019 Apr 4;132:906-914. Epub 2019 Apr 4.

School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; Institute of Food Physical Processing, Jiangsu University, Zhenjiang 212013, China.

Cordyceps militaris is a unique and precious medical fungus in Chinese Cordyceps, which has been widely used as the traditional medicines or as biocontrol agents against pests in China for centuries. Polysaccharides are one of bioactive constituents in Cordyceps militaris with a variety of biological activities, including immunomodulation, antioxidant, anti-tumor, and anti-aging activities, among others. However, natural Cordyceps militaris are very rare and expensive, most of literatures indicated that the polysaccharides were mostly extracted from artificially cultivated fungal fruiting bodies (intracellular polysaccharides) or mycelia fermentation broths (extracellular polysaccharides). Read More

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http://dx.doi.org/10.1016/j.ijbiomac.2019.04.020DOI Listing
April 2019
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Expression of NY-ESO-1 and its association with Foxp3 and IDO in microenvironment of non-small cell lung cancer.

HLA 2019 Apr 5. Epub 2019 Apr 5.

Shenzhen Institute for Innovation and Translational Medicine, Shenzhen, Guangdong, China.

Lung cancer is one of the most prevalent and fatal cancer worldwide. The traditional treatment including surgery, radiotherapy, chemotherapy and targeted therapy, are not satisfactory due to severe side effects and/or relapse. Genetically engineered T cell based immunotherapy for malignant cancer shows promise in recent clinical trials. Read More

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http://dx.doi.org/10.1111/tan.13547DOI Listing
April 2019
2 Reads

Occurrence of human pathogenic bacteria carrying antibiotic resistance genes revealed by metagenomic approach: A case study from an aquatic environment.

J Environ Sci (China) 2019 Jun 14;80:248-256. Epub 2019 Jan 14.

State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China. Electronic address:

Antibiotic resistance genes (ARGs), human pathogenic bacteria (HPB), and HPB carrying ARGs are public issues that pose a high risk to aquatic environments and public health. Their diversity and abundance in water, intestine, and sediments of shrimp culture pond were investigated using metagenomic approach. A total of 19 classes of ARGs, 52 HPB species, and 7 species of HPB carrying ARGs were found. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S10010742183158
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http://dx.doi.org/10.1016/j.jes.2019.01.001DOI Listing
June 2019
2 Reads
2.002 Impact Factor

Bacteriophage 156 Is an Effective Biotechnological Tool for Reducing the Presence of Tyramine and Putrescine in an Experimental Cheese Model.

Front Microbiol 2019 20;10:566. Epub 2019 Mar 20.

Department of Biotechnology of Dairy Products, Institute of Dairy Products of Asturias - Spanish National Research Council (IPLA-CSIC), Villaviciosa, Spain.

Biogenic amines (BA) - nitrogenous compounds of low molecular weight - are the result of metabolism of certain amino acids. They are biologically present in all living organisms and play essential physiological roles. However, their accumulation in foodstuffs due to the metabolic activity of certain microorganisms represents a toxicological risk. Read More

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http://dx.doi.org/10.3389/fmicb.2019.00566DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6435515PMC
March 2019
3 Reads

Isolation, characterization, and PCR-based molecular identification of a siphoviridae phage infecting Shigella dysenteriae.

Microb Pathog 2019 Apr 1;131:175-180. Epub 2019 Apr 1.

State Key Laboratory Cultivation Base of MOST, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, PR China; Jiangsu University, Zhenjiang, Jiangsu, 212013, China. Electronic address:

Background: Shigella dysenteriae is one of the members of Shigella genus which was the main responsible of different Shigellosis outbreaks worldwide. The increasing consumption of antibiotics has led to the emergence and spreading of antibiotic-resistant strains. Therefore, finding new alternatives for infection control is essential, one of which is using bacteriophages. Read More

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http://dx.doi.org/10.1016/j.micpath.2019.03.037DOI Listing
April 2019
2 Reads

Anti-ESBL investigation of chitosan/silver nanocomposites against carbapenem resistant Pseudomonas aeruginosa.

Int J Biol Macromol 2019 Apr 1;132:1221-1234. Epub 2019 Apr 1.

State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China.

In the present investigation functional chitosan/silver nanocomposites (CS/Ag NCs) were successfully synthesized and found to possess favorable antibacterial activity against extended spectrum beta-lactasame (ESBL) producing Pseudomonas aeruginosa. Powder X-ray diffraction showed that the obtained CS/Ag NCs are constituted of highly crystalline Ag nanoparticles (NPs) embedded in an amorphous CS matrix material. Transmission electron microscopy (TEM) analysis provided structural information about CS/Ag NCs, revealing the formation of spherical cluster structures constituted of Ag NPs with size ranging from 6 to 18 nm embedded in the amorphous CS matrix. Read More

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http://dx.doi.org/10.1016/j.ijbiomac.2019.03.238DOI Listing
April 2019
1 Read