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Journal articles on the topic 'Cellulose – Antagonistes'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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1

El-Tarabily, Khaled A., Melissa L. Sykes, Ipek D. Kurtböke, Giles E. St J. Hardy, Aneli M. Barbosa, and Robert F. H. Dekker. "Synergistic effects of a cellulase-producing Micromonospora carbonacea and an antibiotic-producing Streptomyces violascens on the suppression of Phytophthora cinnamomi root rot of Banksia grandis." Canadian Journal of Botany 74, no. 4 (1996): 618–24. http://dx.doi.org/10.1139/b96-078.

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Three polyvalent Streptomyces phages were used to isolate four Micromonospora species (M. carbonacea, M. chalcea, M. purpureochromogenes, and M. inositola) from mine-site rhizosphere soils in Western Australia. Streptomyces violascens was isolated using selective isolation techniques from the same soils. The Micromonspora spp. were examined for their ability to produce cellulases. Micromonospora carbonacea, M. chalcea, and M. purpureochromogenes, which were found to produce the enzyme, caused lysis of Phytophthora cinnamomi hyphae. Glasshouse trials showed that the use of the cellulase-produci

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2

Benyagoub, Mohammed, Nicole Benhamou, and Odile Carisse. "Cytochemical Investigation of the Antagonistic Interaction Between a Microsphaeropsis sp. (Isolate P130A) and Venturia inaequalis." Phytopathology® 88, no. 7 (1998): 605–13. http://dx.doi.org/10.1094/phyto.1998.88.7.605.

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In an attempt to better understand the mode of action of the antagonistic fungus Microsphaeropsis sp., the interaction between this fungus and Venturia inaequalis was studied, using both light and electron microscopy. Cytological observations indicated that the antagonistic interaction between the two fungi likely involves a sequence of events, including (i) attachment and local penetration of Microsphaeropsis sp. into V. inaequalis hyphae; (ii) induction of host structural response at sites of potential antagonist entry; (iii) alteration of host cytoplasm; and (iv) active multiplication of an

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3

Karunasinghe, Thamodini G., S. S. N. Maharachchikumbura, Rethinasamy Velazhahan, and Abdullah M. Al-Sadi. "Antagonistic Activity of Endophytic and Rhizosphere Fungi Isolated From Sea Purslane (Sesuvium portulacastrum) Against Pythium Damping off of Cucumber." Plant Disease 104, no. 8 (2020): 2158–67. http://dx.doi.org/10.1094/pdis-01-20-0003-re.

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This study was conducted to investigate the antagonistic activity of endophytic and rhizosphere fungi isolated from a medicinal plant, Sesuvium portulacastrum, against Pythium aphanidermatum, the cause of damping off of cucumber. A total of 40 endophytic and 19 rhizosphere fungi were isolated from S. portulacastrum. Three endophytic isolates and two rhizosphere isolates gave >50% suppression of P. aphanidermatum in the in vitro dual-culture tests. Scanning electron microscopic studies at the inhibition zone showed hyphae wall damage and abnormal mycelial growth of the genus Pythium. Molecul

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4

Zubaidah, Anis, Dony Prasetyo, Hany Handajani, Sulis Puji Rohmah, and Dyah Ayu Puspita. "SCREENING BAKTERI SELULOLITIK DAN AMILOLITIK PADA RUMEN SAPI SEBAGAI KANDIDAT PROBIOTIK PADA BUDIDAYA IKAN SECARA IN VITRO." Jurnal Riset Akuakultur 14, no. 4 (2019): 261. http://dx.doi.org/10.15578/jra.14.4.2019.261-271.

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Bakteri selulolitik dan amilolitik mampu mengubah selulosa dan amilum menjadi glukosa serta mampu menghasilkan enzim selulase dan amilase. Bakteri selulolitik dan amilolitik diisolasi dari rumen sapi. Tujuan dari penelitian ini adalah untuk mendapatkan bakteri selulolitik dan amilolitik dari rumen sapi yang memiliki nilai indeks selulolitik dan amilolitik yang tinggi, serta mampu memenuhi syarat untuk dijadikan sebagai probiotik. Screening bakteri pada rumen sapi menghasilkan enam isolat yaitu AR, BR, CR, DR, ER, dan FR. Uji aktivitas selulolitik dilakukan pada substrat carboxy methyl cellulos

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5

Mamphogoro, Tshifhiwa Paris, Casper Nyaradzai Kamutando, Martin Makgose Maboko, Olayinka Ayobami Aiyegoro, and Olubukola Oluranti Babalola. "Epiphytic Bacteria from Sweet Pepper Antagonistic In Vitro to Ralstonia solanacearum BD 261, a Causative Agent of Bacterial Wilt." Microorganisms 9, no. 9 (2021): 1947. http://dx.doi.org/10.3390/microorganisms9091947.

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Biological control of plant pathogens, particularly using microbial antagonists, is posited as the most effective, environmentally-safe, and sustainable strategy to manage plant diseases. However, the roles of antagonists in controlling bacterial wilt, a disease caused by the most devastating and widely distributed pathogen of sweet peppers (i.e., R. solanacearum), are poorly understood. Here, amplicon sequencing and several microbial function assays were used to depict the identities and the potential antagonistic functions of bacteria isolated from 80 red and green sweet pepper fruit samples

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6

Silva, Valéria Maria Araujo, Claudia Miranda Martins, Fernando Gouveia Cavalcante, et al. "Cross-Feeding Among Soil Bacterial Populations: Selection and Characterization of Potential Bio-inoculants." Journal of Agricultural Science 11, no. 5 (2019): 23. http://dx.doi.org/10.5539/jas.v11n5p23.

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The biological nitrogen fixation constitutes a strategy to accelerate soil reclamation and the symbiotic systems Rhizobium-legume is the major N2-fixing in which the enzyme carboxymethyl cellulase plays a key role. As many rhizobia species are cellulase negative, the association with cellulolytic bacteria can be a strategy for the recovery of degraded ecosystems. It has been hypothesized that the sharing of resources should mostly be prevalent among phylogenetically and metabolically different species. Accordingly, twenty-seven actinobacteria isolates from Actinobacteria phyla and twenty-six r

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7

Abdel-Basset, R. "Calcium/Calmodulin Regulated Cell Wall Regeneration in Zea mays Mesophyll Protoplasts." Zeitschrift für Naturforschung C 53, no. 1-2 (1998): 33–38. http://dx.doi.org/10.1515/znc-1998-1-208.

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Abstract The composition of newly synthesized cell walls starting from enzymatically isolated Zea mays mesophyll protoplasts was studied. The contents of pectin, cellulose and hemicellulose in addition to the wall-associated proteins were followed in the presence of increasing concentrations of calcium ions with or without the calcium channel blockers like lanthanum, lithium ions, verapamil, nifedipine and the calmodulin antagonist trifluperazine. Pectin accumulation was inhibited by all antagonists except lanthanum. Cellulose formation, however, was increased by organic antagonists triflupe

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8

Purwadari, Tresnawati, Pius P. Ketaren, Arnold P. Sinurat, and Irawan Sutikno. "IDENTIFICATION AND EVALUATION OF FIBER HYDROLYTIC ENZYMES IN THE EXTRACT OF TERMITES (Glyptotermes montanus) FOR POULTRY FEED APPLICATION." Indonesian Journal of Agricultural Science 4, no. 2 (2016): 40. http://dx.doi.org/10.21082/ijas.v4n2.2003.40-47.

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Foot rot disease of black pepper caused by Phytophthora capsici had been reported in Batangas and Laguna, Philippines. The plant was recovered following the application of crop residue (organic substrate) and intercropping with other crops. This study was aimed to isolate, identify, and determine the soil mycoflora from the rhizosphere of black pepper grown on various cropping patterns in Batangas and Laguna. Antagonistic activity of mycoflora isolates was tested against P. capsici using dual culture technique. The result showed that 149 colonies of soil mycoflora isolated were belonging to 14

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9

Purwadari, Tresnawati, Pius P. Ketaren, Arnold P. Sinurat, and Irawan Sutikno. "IDENTIFICATION AND EVALUATION OF FIBER HYDROLYTIC ENZYMES IN THE EXTRACT OF TERMITES (Glyptotermes montanus) FOR POULTRY FEED APPLICATION." Indonesian Journal of Agricultural Science 4, no. 2 (2016): 40. http://dx.doi.org/10.21082/ijas.v4n2.2003.p40-47.

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Foot rot disease of black pepper caused by Phytophthora capsici had been reported in Batangas and Laguna, Philippines. The plant was recovered following the application of crop residue (organic substrate) and intercropping with other crops. This study was aimed to isolate, identify, and determine the soil mycoflora from the rhizosphere of black pepper grown on various cropping patterns in Batangas and Laguna. Antagonistic activity of mycoflora isolates was tested against P. capsici using dual culture technique. The result showed that 149 colonies of soil mycoflora isolated were belonging to 14

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10

Novikova, I. I., J. A. Titova, I. V. Boykova та I. L. Krasnobaeva. "Сontrolled breeding of the psychrophilic strain G-034 VIZR of Trichoderma asperellum for fast crop residues’ polymers utilization and soil enhancement". Vavilov Journal of Genetics and Breeding 23, № 3 (2019): 328–36. http://dx.doi.org/10.18699/vj19.497.

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Genus Trichoderma strains as the natural plant residues’ biodestructors, highly active antagonists of soil phytopathogens and phytoregulators with the widest range of optimum conditions for their development, are widely used in biologics development. Of particular importance in Russia’s northern regions, especially in winter crop cultivation, is the ability of a microorganism’s strain used in agro-technologies to maintain viability and target biological activity at low temperatures. In this connection, this work purpose is to select a psychrotolerant strain of T. asperellum for the rapid crop

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11

MARTINS, BÁRBARA ESTEVAM DE MELO, AMANDA ABDALLAH CHAIBUB, MARCIO VINICIUS DE CARVALHO BARROS CORTÊS, VALÁCIA LEMES DA SILVA LOBO, and MARTA CRISTINA CORSI DE FILIPPI. "CHARACTERIZATION OF BACTERIAL ISOLATES FOR SUSTAINABLE RICE BLAST CONTROL." Revista Caatinga 33, no. 3 (2020): 702–12. http://dx.doi.org/10.1590/1983-21252020v33n313rc.

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ABSTRACT Rice blast (Magnaporthe oryzae) limits rice (Oryza sativa) grain yields worldwide. The objective of this investigation was to morphologically, biochemically, and molecularly characterize six bacterial isolates, BRM 32109, BRM 32110, BRM 32111, BRM 32112, BRM 32113, and BRM 32114, and to determine their potential as antagonists to M. oryzae. Morphological characterization was based on colony formation and color, Gram staining, and fluorescent pigment production. Biochemical studies were based on cellulase, chitinase, phosphatase, indoleacetic acid, and siderophore production, as well a

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12

Chhabra, Deepika, and Poonam Sharma. "Non rhizobial endophytic bacteria from chickpea (Cicer arietinum L.) tissues and their antagonistic traits." Journal of Applied and Natural Science 11, no. 2 (2019): 346–51. http://dx.doi.org/10.31018/jans.v11i2.2056.

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Bacteria that colonize plant tissues other than rhizobia and are beneficial for plant growth referred to non rhizobial plant growth-promoting endophytic bacteria (PGPEB). This study was designed to assay the biocontrol activity of plant growth promoting endophytic bacterial isolates those found positive for P. solubilization, ACC deaminase, Indole acetic acid and Gibberelic acid production. These bacterial isolates were obtained from chickpea (Cicer arietinum L.) tissues (roots and nodules). In a previous study a total of 263 non rhizobial endophytic bacterial isolates were isolated. Out of 26

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13

Allaga, Henrietta, Bettina Bóka, Péter Poór, et al. "A Composite Bioinoculant Based on the Combined Application of Beneficial Bacteria and Fungi." Agronomy 10, no. 2 (2020): 220. http://dx.doi.org/10.3390/agronomy10020220.

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A composite soil bioinoculant containing beneficial bacteria and fungi was developed for biocontrol of plant pathogens, phosphorous mobilization, stem degradation, humification, and nitrogen fixation. A Trichoderma asperellum isolate with outstanding in vitro antagonistic abilities toward a series of plant pathogenic fungi was included as a potential biocontrol component. The selected strain was also shown to promote growth and increase photosynthetic activity of tomato plants. For phosphorous mobilization and stem degradation, a Trichoderma atrobrunneum strain was selected, which produced cel

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14

Picard, Karine, Yves Tirilly, and Nicole Benhamou. "Cytological Effects of Cellulases in the Parasitism of Phytophthora parasitica by Pythium oligandrum." Applied and Environmental Microbiology 66, no. 10 (2000): 4305–14. http://dx.doi.org/10.1128/aem.66.10.4305-4314.2000.

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ABSTRACT The ubiquitous oomycete Pythium oligandrum is a potential biocontrol agent for use against a wide range of pathogenic fungi and an inducer of plant disease resistance. The ability ofP. oligandrum to compete with root pathogens for saprophytic colonization of substrates may be critical for pathogen increase in soil, but other mechanisms, including antibiosis and enzyme production, also may play a role in the antagonistic process. We used transmission electron microscopy and gold cytochemistry to analyze the intercellular interaction between P. oligandrum andPhytophthora parasitica. Gro

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15

Grishko, R. V., A. I. Kirichenko, I. Ye Sokolova, O. A. Dregval, and T. V. Sklyar. "ANTAGONISTIC, LYTIC AND CELLULASE ACTIVITY BACILLUS, ISOLATED FROM SOIL." Bulletin of Problems Biology and Medicine 4.3, no. 141 (2018): 264. http://dx.doi.org/10.29254/2077-4214-2017-4-3-141-264-268.

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16

Gozan, Misri, Andre Fahriz Harahap, Chandra Paska Bakti, and Siswa Setyahadi. "Optimization of cellulase production by bacillus sp. BPPT CC RK2 with pH and temperature variation using response surface methodology." E3S Web of Conferences 67 (2018): 02051. http://dx.doi.org/10.1051/e3sconf/20186702051.

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Indonesia has abundant ethanol biomass feedstocks. However the second-generation ethanol production process is still hampered by the unavailability of cellulase enzyme in the process of decomposition of lignocellulose into saccharides that can be processed into ethanol through fermentation. Cellulase is known as exozyme produced by Bacillus sp. in submerged fermentation. In this study, cellulase production by Bacillus sp. CC BPPT RK2 on natural and abundant agricultural waste substrates (rice bran and coconut water) was evaluated by investigating the optimum conditions for cellulase production

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17

Clocchiatti, Anna, Silja Emilia Hannula, Muhammad Syamsu Rizaludin, et al. "Impact of Cellulose-Rich Organic Soil Amendments on Growth Dynamics and Pathogenicity of Rhizoctonia solani." Microorganisms 9, no. 6 (2021): 1285. http://dx.doi.org/10.3390/microorganisms9061285.

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Cellulose-rich amendments stimulate saprotrophic fungi in arable soils. This may increase competitive and antagonistic interactions with root-infecting pathogenic fungi, resulting in lower disease incidence. However, cellulose-rich amendments may also stimulate pathogenic fungi with saprotrophic abilities, thereby increasing plant disease severity. The current study explores these scenarios, with a focus on the pathogenic fungus Rhizoctonia solani. Saprotrophic growth of R. solani on cellulose-rich materials was tested in vitro. This confirmed paper pulp as a highly suitable substrate for R. s

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18

McGuire, Raymond G. "Population Dynamics of Postharvest Decay Antagonists Growing Epiphytically and Within Wounds on Grapefruit." Phytopathology® 90, no. 11 (2000): 1217–23. http://dx.doi.org/10.1094/phyto.2000.90.11.1217.

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Coating formulations of shellac, sucrose ester, and cellulose were tested that support populations of bacterial and yeast antagonists of postharvest Penicillium decay of grapefruit. Surface populations of Pseudomonas syringae, P. fluorescens, and P. putida were stable between 103 and 104 CFU/cm2 on shellacked fruit over 4 months at 13°C, but numbers of the yeast Candida oleophila rose steadily from 2.35 × 103 to nearly 105. Through the first 15 days of cold storage, surface populations of P. syringae and C. oleophila were greater when applied to fruit within the pH 7.2 shellac than when applie

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19

Korzh, Yu V., I. V. Dragovoz, and L. V. Avdeeva. "Lytic Exoenzymes of Soil Strains of Bacillus Representatives and Manifestations of their Biological Activity." Mikrobiolohichnyi Zhurnal 83, no. 4 (2021): 54–62. http://dx.doi.org/10.15407/microbiolj83.04.054.

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Bacteria of the genus Bacillus make up a significant (8–12%) part of the soil microbiome. Manifestation of their biological activity, in particular, the antagonistic and lytic activity against other microorganisms directly depends on their exometabolites. According to the literature, such properties of soil bacteria of the genus Bacillus thus can be related to their various lytic exoenzymes. Aim. To evaluate the role of lytic exoenzymes of the studied soil bacteria strains of the genus Bacillus in the manifestation of their biological (antagonistic, lysing) activity. Methods. The antagonistic

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20

Matei, Gabi-Mirela, Sorin Matei, and Victoria Mocanu. "Assessing the role of soil microbial communities of natural forest ecosystem." EuroBiotech Journal 4, no. 1 (2020): 01–07. http://dx.doi.org/10.2478/ebtj-2020-0001.

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AbstractIn forests, edaphic microbial communities are involved in litter decomposition and soil forming processes, with major contribution to humification, especially bacteria and fungi being responsible for the main ecosystem services fulfilled by the soil. Research has been carried out aiming to characterize the structure and diversity of microbial communities in the Rendzic Leptosols (WRB) under natural deciduous forest from Visterna, Babadag Plateau and to assess their contribution to ecosystem services provided by soil. The paper presents the results of quantitative estimations and taxono

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21

Woo, Sang-Min, and Sang-Dal Kim. "Confirmation of Non-Siderophore Antifugal Substance and Cellulase from Bacillus lichemiformis Kll Containing Antagonistic Ability and Plant Growth Promoting Activity." Journal of Life Science 17, no. 7 (2007): 983–89. http://dx.doi.org/10.5352/jls.2007.17.7.983.

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22

Sorin, Matei, Matei Gabi-Mirela, and Dumitrașcu Monica. "Soils from HNV agriculture systems as source of microorganisms with antifungal activity." EuroBiotech Journal 2, no. 4 (2018): 196–99. http://dx.doi.org/10.2478/ebtj-2018-0049.

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Abstract Soils from rural zones with high natural value (HNV) agriculture systems are an important source of beneficial microbial species that can be useful for various biotechnological purposes, such as transfer of suppressiveness against plant pathogens from suppressive to disease-inducing soils by using inoculation with antagonistic selected strains. The main goal of the paper was to present the results of the research carried out on strains isolated from soil microbial populations in HNV agriculture system (Mureș county, Romania) responsible for specific suppressiveness against soil-borne

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23

El-Ghaouth, Ahmed, Charles L. Wilson, and Michael Wisniewski. "Ultrastructural and Cytochemical Aspects of the Biological Control of Botrytis cinerea by Candida saitoana in Apple Fruit." Phytopathology® 88, no. 4 (1998): 282–91. http://dx.doi.org/10.1094/phyto.1998.88.4.282.

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Biocontrol activity of Candida saitoana and its interaction with Botrytis cinerea in apple wounds were investigated. When cultured together, yeast attached to Botrytis sp. hyphal walls. In wounded apple tissue, C. saitoana restricted the proliferation of B. cinerea, multiplied, and suppressed disease caused by either B. cinerea or Penicillium expansum. In inoculated apple tissue without the yeast, fungal colonization caused an extensive degradation of host walls and altered cellulose labeling patterns. Hyphae in close proximity to the antagonistic yeast exhibited severe cytological injury, suc

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24

Tsuneda, A., N. Maekawa, I. Ohira, and I. Furukawa. "Incipient decay of Quercus serrata sapwood by Lentinus edodes and its inhibition by an antagonistic hyphomycete, Leptodontidium elatius." Canadian Journal of Botany 69, no. 12 (1991): 2797–805. http://dx.doi.org/10.1139/b91-350.

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Incipient decay of Quercus serrata by Lentinus edodes and its inhibition by Leptodontidium elatius were investigated by scanning electron microscopy. Rapid accumulation of L. edodes hyphae in earlywood vessels was a prerequisite to efficient decay of sapwood. In the early stages of decay, selective removal of lignin and other amorphous wall components occurred in the vessels and surrounding tissues, including vasicentric tracheids and wood fibres. Thus, bundles of cellulose microfibrils, having lateral dimensions of 15–50 nm, became recognizable. Disintegration of cellulose microfibril bundles

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25

Aboul-Enein, Hassan Y. "Applications of Cellulose-Based Chiral Stationary Phases in the Resolution of Some Beta-Adrenoceptor Antagonists." Analytical Letters 26, no. 2 (1993): 271–79. http://dx.doi.org/10.1080/00032719308017384.

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26

Al-Qaysi, Safaa A. S., Noor M. Abdullah, M. R. Jaffer, and Zainab A. Abbas. "Biological Control of Phytopathogenic Fungi by Kluyveromyces marxianus and Torulaspora delbrueckii Isolated from Iraqi Date Vinegar." Journal of Pure and Applied Microbiology 15, no. 1 (2021): 300–311. http://dx.doi.org/10.22207/jpam.15.1.23.

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Yeasts are distributed in all environments and have been reported as potential biocontrol agents against various phytopathogenic fungi. To investigate their enzymatic and biological activities, 32 yeasts were isolated from 15 date vinegar samples. Evaluation of the antagonistic activities of isolated yeasts against the plant pathogens Fusarium oxysporium, Sclerotinia sclerotiorum, and Macrophomina phaseolina indicated that there are two yeasts had the highest inhibitory effect against plant pathogens, these yeasts identified as Kluyveromyces marxianus and Torulaspora delbrueckii using traditio

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27

Odhiambo, Benard. "Antimicrobial Compounds Biosynthesis and Biocontrol Mechanisms of Lysobacter enzymogenes." Pan Africa Science Journal 2, no. 01 (2021): 85–102. http://dx.doi.org/10.47787/pasj.2021.01.22.

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Biocontrol of plant pathogens is considered an environmentally friendly strategy and it is preferred over the use of chemicals which cause environmental pollution. Lysobacter enzymogenes is a bacterium that has been identified as an agriculturally important biocontrol agent. L. enzymogenes possess antagonistic activity against numerous phytopathogens such as fungi, oomycetes, bacteria and nematodes. Its antagonistic activity is conferred by its ability to produce bioactive secondary metabolites such as the Heat-Stable Anti-Fungal Factor (HSAF), Heat-Stable Degrading Metabolite (HSDM) and WAP-8

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Tacke, Reinhold, Dirk Reichel, Kurt Günther, and Stefan Merget. "The First Liquid-Chromatographic Separation of the (R)- and (S)-Enantiomers of a Chiral Silanol, Silane and Germane." Zeitschrift für Naturforschung B 50, no. 4 (1995): 568–72. http://dx.doi.org/10.1515/znb-1995-0416.

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The racemic mixtures of the muscarinic antagonists cyclohexyl(phenyl)(2-pyrrolidinoethyl)silanol (sila-procyclidine, rac-1), cyclohexyl(hydroxymethyl)phenyl(2-piperidinoethyl)-silane (rac-2) and cyclohexyl(hydroxymethyl)phenyl(2-piperidinoethyl)germane (rac-3) were resolved by analytical liquid chromatography (HPLC) using chemically modified cellulose (1) or amylose (2, 3) as the chiral stationary phase. This chromatographic method was used for the quantitative determination of enantiomeric purity of the (R)- and (S)-enantiomers of 1 - 3 , which were obtained by preparative resolution with chi

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29

El-Tarabily, Khaled A. "Rhizosphere-competent isolates of streptomycete and non-streptomycete actinomycetes capable of producing cell-wall-degrading enzymes to controlPythium aphanidermatumdamping-off disease of cucumber." Canadian Journal of Botany 84, no. 2 (2006): 211–22. http://dx.doi.org/10.1139/b05-153.

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Fifty-eight streptomycete and 35 non-streptomycete actinomycetes were isolated from cucumber rhizosphere soil. These isolates were screened for the production of cell-wall-degrading enzymes using mycelial ( Pythium aphanidermatum (Edson) Fitzp.) fragment agar. Eighteen promising isolates were screened for their competence as root colonizers. Eight isolates showing exceptional rhizosphere competence significantly inhibited, in vitro, P. aphanidermatum, the causal agent of postemergence damping-off of cucumber ( Cucumis sativus L.) seedlings. The four most inhibitory isolates ( Actinoplanes phil

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MACIEL, A. S., L. G. FREITAS, L. D. FIGUEIREDO, A. K. CAMPOS, and I. N. K. MELLO. "Antagonistic activity of the fungusPochonia chlamydosporiaon mature and immatureToxocara caniseggs." Parasitology 139, no. 8 (2012): 1074–85. http://dx.doi.org/10.1017/s0031182012000418.

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SUMMARYIn vitrotests were performed to evaluate the ability of 6 isolates of the nematophagous fungusPochonia chlamydosporiato infect immature and matureToxocara caniseggs on cellulose dialysis membrane. There was a direct relationship between the number of eggs colonized and the increase in the days of interaction, as well as between the number of eggs colonized and the increase in the concentration of chlamydospores (P<0·05). Immature eggs were more susceptible to infection than mature eggs. The isolate Pc-04 was the most efficient egg parasite until the 7th day, and showed no difference

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Bora, Popy, L. C. Bora, and P. C. Deka. "Efficacy of Substrate Based Bioformulation of Microbial Antagonists in the Management of Bacterial Disease of some Solanaceous Vegetables in Assam." Journal of Biological Control 30, no. 1 (2016): 49. http://dx.doi.org/10.18311/jbc/30/1/6459.

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A study was undertaken to explore effective organic substrate-based bioformulation using virulent cells of antagonists <em>Pseudomonas fluorescens, Bacillus subtilis</em> and <em>Trichoderma viride</em> during 2010-13. Three organic substrates, viz. vermicompost, farm yard manure and mustard oil cake (MOC) were compared for mass multiplication of the antagonists. All the substrate based antagonists showed effective results in suppression of bacterial wilt <em>(Ralstonia solanacearum</em> Yabuchi et al.) incidence in vegetable crops tomato, brinjal and chill.

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Benhamou, Nicole, Patrice Rey, Karine Picard, and Yves Tirilly. "Ultrastructural and Cytochemical Aspects of the Interaction Between the Mycoparasite Pythium oligandrum and Soilborne Plant Pathogens." Phytopathology® 89, no. 6 (1999): 506–17. http://dx.doi.org/10.1094/phyto.1999.89.6.506.

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The interaction between the oomycete Pythium oligandrum and various soilborne oomycete and fungal plant pathogens (P. ultimum, P. aphanidermatum, Fusarium oxysporum f. sp. radicis-lycopersici, Verticillium albo-atrum, Rhizoctonia solani, and Phytophthora megasperma) was studied by light and electron microscopy in order to assess the relative contribution of mycoparasitism and antibiosis in the antagonistic process. Scanning electron microscope investigations of the interaction regions showed that structural alterations of all pathogenic fungi and oomycetes (except for Phytophthora megasperma)

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Zulfa, N. V., M. Fitroh, I. Santoso, A. E. Maryanto, and Yasman. "Antagonistic potential of Streptomyces cellulosae SM12 against Ganoderma sp. TB3 and Ganoderma sp. TB4." Journal of Physics: Conference Series 1725 (January 2021): 012055. http://dx.doi.org/10.1088/1742-6596/1725/1/012055.

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Lu, Jianwen, Zhidan Liu, Yuanhui Zhang, and Phillip E. Savage. "Synergistic and Antagonistic Interactions during Hydrothermal Liquefaction of Soybean Oil, Soy Protein, Cellulose, Xylose, and Lignin." ACS Sustainable Chemistry & Engineering 6, no. 11 (2018): 14501–9. http://dx.doi.org/10.1021/acssuschemeng.8b03156.

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Jaggi, Vandana, Samiksha Joshi, Hemant Dasila, Navneet Pareek, and Manvika Sahgal. "FUNCTIONAL AND MOLECULAR CHARACTERIZATION OF WHEAT RHIZOSPHERE BACTERIA AND THEIR ANTAGONISTIC ACTIVITY AGAINST WHEAT FOLIAR BLIGHT PATHOGENS." Journal of Experimental Biology and Agricultural Sciences 8, no. 5 (2020): 605–20. http://dx.doi.org/10.18006/2020.8(5).605.620.

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The current study aimed to explore the wheat rhizospheric bacterial community for in vitro plant growth-promoting (PGP) traits and antagonistic activity against foliar blight disease of wheat caused by Alternaria triticina and Bipolaris sorokiniana. The soil samples from the wheat fields across four Indian states namely Uttarakhand (2 sites), Uttar Pradesh, Madhya Pradesh, and Maharashtra were analyzed for their physicochemical properties, enzymatic activities, and bacterial population density (CFU g-1). Amongst the tested soil samples, field soil from Uttar Pradesh has the highest bacterial p

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Lee, Yong Seong, Muhammad Anees, Yun Serk Park, Sun Bae Kim, Woo Jin Jung, and Kil Yong Kim. "Purification and properties of a Meloidogyne-antagonistic chitinase from Lysobacter capsici YS1215." Nematology 16, no. 1 (2014): 63–72. http://dx.doi.org/10.1163/15685411-00002745.

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The root-knot nematodes, Meloidogyne spp., cause serious diseases in various plants and their chemical control may lead to environmental problems. Therefore, alternative control measures against the phytopathogenic nematodes are being sought. One of the potential targets against Meloidogyne spp. may be the chitinolysis and degradation of nematode eggs. Therefore, in the present study, a chitinolytic and nematicidal strain of Lysobacter capsici YS1215 was isolated from an agricultural field in Korea. The aim of this study was to purify chitinase secreted by L. capsici YS1215 and investigate its

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Al-Shibli, Hanaa, Sergey Dobretsov, Abdulrahman Al-Nabhani, Sajeewa S. N. Maharachchikumbura, Velazhahan Rethinasamy, and Abdullah M. Al-Sadi. "Aspergillus terreus obtained from mangrove exhibits antagonistic activities against Pythium aphanidermatum-induced damping-off of cucumber." PeerJ 7 (October 21, 2019): e7884. http://dx.doi.org/10.7717/peerj.7884.

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A study was conducted to investigate the potential of Aspergillus terreus obtained from Avicennia marina mangrove roots in inhibiting Pythium aphanidermatum and damping-off disease of cucumber. Aspergillus terreus exhibited in vitro inhibition of Pythium aphanidermatum growth. Electron microscope examination revealed that the antagonistic fungal isolate resulted in shrinking and groves in Pythium hypha. When Aspergillus terreus culture filtrate was added to Pythium aphanidermatum, it resulted in a significant increase (by 73%) in electrolyte leakage from Pythium hypha compared to the control,

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Meliah, Siti, Tri Ratna Sulistiyani, Puspita Lisdiyanti, Atit Kanti, I. Made Sudiana, and Masaru Kobayashi. "Antifungal Activity of Endophytic Bacteria Associated with Sweet Sorghum (Sorghum bicolor)." Journal of Mathematical and Fundamental Sciences 53, no. 1 (2021): 16–30. http://dx.doi.org/10.5614/j.math.fund.sci.2021.53.1.2.

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The contribution of endophytic bacteria to the wellbeing of plants as biocontrol agents may be due to endophytic bacteria growing in the same niche as phytopathogens. This work was conducted to study the antagonistic activity of endophytic bacteria recovered from sweet sorghum against Sclerotium rolfsii, Fusarium solani, Fusarium oxysporum, Colletotrichum gloeosporioides in vitro and evaluate the mechanisms of these fungal inhibitions. We selected 78 endophytic bacteria from the stem and root of sweet sorghum plants. They were tested for antagonist activity by direct confrontation method. Anti

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Vanitha, K., M. Mohan Varma, and Ramesh Alluri. "Formulation and In vitro Evaluation of Floating Microspheres of Misoprostol." International Journal of Pharmaceutical Sciences and Nanotechnology 10, no. 1 (2017): 3608–15. http://dx.doi.org/10.37285/ijpsn.2017.10.1.6.

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Misoprostol is a synthetic prostaglandin PGE1 analogue, which has proved to be an effective anti-secretory agent for oral use. The major indications of Misoprostol are in the prevention and treatment of NSAID-induced gastric and duodenal ulcers. Its half-life is 20-40 minutes. More than one third of patients with ulcers are resistant to H2 antagonists. So, these patients can be healed on Misoprostol. The objective of the present study was to formulate gastroretentive floating drug delivery system of an antiulcer drug Misoprostol. Floating microspheres of Misoprostol were prepared by an emulsif

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Fradkin, A., and Z. A. Patrick. "Properties of bacteria isolated from surfaces of conidia of Cochliobolus sativus incubated in soil." Canadian Journal of Microbiology 31, no. 5 (1985): 411–16. http://dx.doi.org/10.1139/m85-077.

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Bacteria isolated from surfaces of conidia of Cochliobolus sativus incubated in soil were tested for their antagonistic effect on the pathogen, and their ability to degrade fungal cell wall components such as proteins, chitin, lipids, or cellulose. Of the 22 isolates tested only 12 utilized intact conidia as sole nutrient source, and 3 grew poorly on isolated conidial walls. The ability of the various bacteria to colonize conidia in vitro was not correlated with their hydrolytic capacity, or with production of exopolysaccharides. Also, the hydrolytic properties exhibited by the bacteria that w

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Plotnytska, N., O. Nevmerzhytska, I. Karas, and I. Pavliuk. "Identification and studyng of antagonistic peculiarities of cellulose fungi-destructantas to the sugar-beet tubers phusariosis root agents." Vìsnik Lʹvìvsʹkogo nacìonalʹnogo agrarnogo unìversitetu. Agronomìâ, no. 23 (September 1, 2019): 164–69. http://dx.doi.org/10.31734/agronomy2019.01.164.

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Cherkupally, Ramaraju, Hindumathi Amballa, and Narsimha Reddy Bhoomi. "In vitro screening for enzymatic activity of Trichoderma species for biocontrol potential." Annals of Plant Sciences 6, no. 11 (2017): 1784. http://dx.doi.org/10.21746/aps.2017.6.11.11.

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A total of seven Trichoderma species were isolated from rhizosphere soils of brinjal on potato dextrose agar medium. Based on morphological and cultural characters, the isolates were assigned to different species viz., Trichoderma viride, T. harzianum, T. virens, T. atroviride, T. koningii, T. pseudokoningii and T. reesei. Trichoderma species were screened for the production of extracellular enzymes to identify the strain with high antagonistic potential against fungal pathogens. The screening was done following plate assay method on the respective solid media. These strains were positive for

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Zhou, YanYan, LiPing Hao, Chao Ji, et al. "The Effect of Salt-Tolerant Antagonistic Bacteria CZ-6 on the Rhizosphere Microbial Community of Winter Jujube (Ziziphus jujuba Mill. “Dongzao”) in Saline-Alkali Land." BioMed Research International 2021 (September 24, 2021): 1–13. http://dx.doi.org/10.1155/2021/5171086.

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As the main economic crop cultivated in the Yellow River Delta, winter jujube contains various nutrients. However, soil salinization and fungal diseases have affected the yield and quality of winter jujube. In order to use plant growth-promoting rhizobacteria (PGPR) to reduce these damages, the antagonistic bacteria CZ-6 isolated from the rhizosphere of wheat in saline soil was selected for experiment. Gene sequencing analysis identified CZ-6 as Bacillus amyloliquefaciens. In order to understand the salt tolerant and disease-resistant effects of CZ-6 strain, determination of related indicators

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Pingthaisong, Wimonsiri, and Patma Vityakon. "Nonadditive Effects on Decomposition of a Mixture of Rice Straw and Groundnut Stover Applied to a Sandy Soil." Agronomy 11, no. 6 (2021): 1030. http://dx.doi.org/10.3390/agronomy11061030.

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Rice straw is an abundant resource, but its use as a sandy soil amendment does not increase soil organic matter (SOM) accumulation. Our study aimed to determine the altered decomposition processes that result from mixing rice straw (RS) (low N, high cellulose) with groundnut stover (GN) (high N) relative to applying these residues singly to a sandy soil to identify the mechanisms underlying decomposition of the mixed residues. A microcosm experiment using the litter bag technique showed synergistic, nonadditive effects (observed < predicted values) of residue mass remaining (31.1% < 40.3

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War Nongkhla, Fenella Mary, and S. R. Joshi. "Epiphytic and endophytic bacteria that promote growth of ethnomedicinal plants in the subtropical forests of Meghalaya, India." Revista de Biología Tropical 62, no. 4 (2014): 1295. http://dx.doi.org/10.15517/rbt.v62i4.12138.

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<p>The present study was aimed to investigate the endophytic and epiphytic bacteria associated with selected ethnomedicinal plants from the pristine subtropical forests of Meghalaya and analyse them for plant growth promotion and antagonistic ability. This study is an attempt to explore plant associated bacteria which are beneficial to host plants, and thus aid in the conservation of ethnomedicinal plants of the studied subtropical forests, which are dwindling due to exploitation. The plant growth promotion parameters like indole acetic acid (IAA) production, mineral phosphate solubilisa

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Benhamou, Nicole, Chantal Garand, and Alain Goulet. "Ability of Nonpathogenic Fusarium oxysporum Strain Fo47 To Induce Resistance against Pythium ultimum Infection in Cucumber." Applied and Environmental Microbiology 68, no. 8 (2002): 4044–60. http://dx.doi.org/10.1128/aem.68.8.4044-4060.2002.

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ABSTRACT The influence exerted by nonpathogenic Fusarium oxysporum strain Fo47 in triggering cucumber protection against infection by Pythium ultimum was investigated ultrastructurally. Macroscopic and microscopic observations of the pathogen colony in dual cultures revealed that reduction of Pythium growth was associated with marked disorders, including generalized disorganization of the host cytoplasm, retraction of the plasmalemma, and complete loss of the protoplasm. Cytochemical labeling of cellulose with an exoglucanase-gold complex showed that the cellulose component of the host cell wa

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Madi, Lea, Talma Katan, Jaacov Katan, and Yigal Henis. "Biological Control of Sclerotium rolfsii and Verticillium dahliae by Talaromyces flavus Is Mediated by Different Mechanisms." Phytopathology® 87, no. 10 (1997): 1054–60. http://dx.doi.org/10.1094/phyto.1997.87.10.1054.

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Ten wild-type strains and two benomyl-resistant mutants of Talaromyces flavus were examined for their ability to secrete the cell wall-degrading enzymes chitinase, β-1,3-glucanase, and cellulase, to parasitize sclerotia of Sclerotium rolfsii, to reduce bean stem rot caused by S. rolfsii, and to secrete antifungal substance(s) active against Verticillium dahliae. The benomyl-resistant mutant BenRTF1-R6 overproduced extracellular enzymes and exhibited enhanced antagonistic activity against S. rolfsii and V. dahliae compared to the wild-type strains and other mu tants. Correlation analyses betwee

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Elazab, Nahla Tharwat. "Diversity and Biological Activities of Endophytic Fungi at Al-Qassim Region." Journal of Molecular Biology Research 9, no. 1 (2019): 160. http://dx.doi.org/10.5539/jmbr.v9n1p160.

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In recent year&rsquo;s endophytic fungi has become a major concern on their host plants by enhancing their growth, increasing their fitness, strengthening their tolerances to abiotic and biotic stresses, and promoting their accumulation of secondary metabolites. Kingdom of Saudi Arabia has a wide range of flora which may be a rich source of endophytic fungi so that, the present study involves diversity and bioactivity of the endophytic fungal community in Al-Qassim region from 15 wild plants 162 isolates were obtained and identified. Among them, the most common isolates were Aspergillus ni

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Zhao, Baisuo, Yanchun Yan, and Shulin Chen. "How could haloalkaliphilic microorganisms contribute to biotechnology?" Canadian Journal of Microbiology 60, no. 11 (2014): 717–27. http://dx.doi.org/10.1139/cjm-2014-0233.

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Haloalkaliphiles are microorganisms requiring Na+concentrations of at least 0.5 mol·L–1and an alkaline pH of 9 for optimal growth. Their unique features enable them to make significant contributions to a wide array of biotechnological applications. Organic compatible solutes produced by haloalkaliphiles, such as ectoine and glycine betaine, are correlated with osmoadaptation and may serve as stabilizers of intracellular proteins, salt antagonists, osmoprotectants, and dermatological moisturizers. Haloalkaliphiles are an important source of secondary metabolites like rhodopsin, polyhydroxyalkan

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Santos, Bianca de Melo Silveira dos, Maura Santos dos Reis de Andrade Silva, Davy William Hidalgo Chávez, and Everlon Cid Rigobelo. "Bacillus subtilis – capacity for enzymatic degradation, resistance to trace elements, antagonisms and siderophore production." MAY 2021, no. 15(05):2021 (May 10, 2021): 787–95. http://dx.doi.org/10.21475/ajcs.21.15.05.p3206.

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The use of microorganisms in agriculture as biofertilizers and biocontrol agents, in addition to their use in biotechnological practices, has been explored increasingly frequently over the years. Some bacteria, including Bacillus subtilis, have many capabilities related to promoting plant growth. The present study attempted to evaluate eight B. subtilis strains regarding their capacity for enzymatic degradation, resistance to trace elements, antagonism against phytopathogenic fungi and siderophore production. The tests were performed in plate dishes and test tubes with six repetitions for each

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