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https://www.readbyqxmd.com/read/27932645/complete-genome-sequences-of-the-endophytic-streptomyces-strains-en16-en23-and-en27-isolated-from-wheat-plants
#1
Christopher M M Franco, Ricardo Araujo, Eric Adetutu, Shanan S Tobe, Sandeep Mallya, Bobby Paul, Kapaettu Satyamoorthy
The complete genome sequences of three endophytic Streptomyces species were compared. Strains EN16, EN23, and EN27 were isolated from surface-sterilized roots of wheat plants from South Australia. In field trials, these strains are effective in suppressing fungal root diseases of wheat when added as spore coatings to wheat seed.
December 8, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27931714/host-plant-growth-promotion-and-cadmium-detoxification-in-solanum-nigrum-mediated-by-endophytic-fungi
#2
Abdur Rahim Khan, Ihsan Ullah, Muhammad Waqas, Gun-Seok Park, Abdul Latif Khan, Sung-Jun Hong, Rehman Ullah, Byung Kwon Jung, Chang Eon Park, Shafiq Ur-Rehman, In-Jung Lee, Jae-Ho Shin
Current investigation conducted to evaluate the associated fungal endophyte interactions of a Cd hyper-accumulator Solanum nigrum Korean ecotype under varying concentrations of Cd. Two indole-3-acetic acid (IAA) producing fungal strains, RSF-4L and RSF-6L, isolated from the leaves of S. nigrum, were initially screened for Cd tolerance and accumulation potential. In terms of dry biomass production, the strain RSF-6L showed higher tolerance and accumulation capacity for Cd toxicity in comparison to RSF-4L. Therefore, RSF-6L was applied in vivo to S...
February 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/27930707/native-phytoremediation-potential-of-urtica-dioica-for-removal-of-pcbs-and-heavy-metals-can-be-improved-by-genetic-manipulations-using-constitutive-camv-35s-promoter
#3
Jitka Viktorova, Zuzana Jandova, Michaela Madlenakova, Petra Prouzova, Vilem Bartunek, Blanka Vrchotova, Petra Lovecka, Lucie Musilova, Tomas Macek
Although stinging nettle (Urtica dioica) has been shown to reduce HM (heavy metal) content in soil, its wider phytoremediation potential has been neglected. Urtica dioica was cultivated in soils contaminated with HMs or polychlorinated biphenyls (PCBs). After four months, up to 33% of the less chlorinated biphenyls and 8% of HMs (Zn, Pb, Cd) had been removed. Bacteria were isolated from the plant tissue, with the endophytic bacteria Bacillus shackletonii and Streptomyces badius shown to have the most significant effect...
2016: PloS One
https://www.readbyqxmd.com/read/27924400/an-insight-into-the-secondary-metabolism-of-muscodor-yucatanensis-small-molecule-epigenetic-modifiers-induce-expression-of-secondary-metabolism-related-genes-and-production-of-new-metabolites-in-the-endophyte
#4
Masroor Qadri, Yedukondalu Nalli, Shreyans K Jain, Asha Chaubey, Asif Ali, Gary A Strobel, Ram A Vishwakarma, Syed Riyaz-Ul-Hassan
Muscodor spp. are proficient producers of bioactive volatile organic compounds (VOCs) with many potential applications. However, all members of this genus produce varying amounts and types of VOCs which suggests the involvement of epigenetics as a possible explanation. The members of this genus are poorly explored for the production of soluble compounds (extrolites). In this study, the polyketide synthase (PKS) and non-ribosomal peptide synthetase (NRPS) genes from an endophyte, Muscodor yucatanensis Ni30, were cloned and sequenced...
December 6, 2016: Microbial Ecology
https://www.readbyqxmd.com/read/27917206/anticancer-and-antibacterial-secondary-metabolites-from-the-endophytic-fungus-penicillium-sp-cam64-against-multi-drug-resistant-gram-negative-bacteria
#5
Jean-Bosco Jouda, Jean-de-Dieu Tamokou, Céline Djama Mbazoa, Prodipta Sarkar, Prasanta Kumar Bag, Jean Wandji
BACKGROUND: The emergence of multiple-drug resistance bacteria has become a major threat and thus calls for an urgent need to search for new effective and safe anti-bacterial agents. OBJECTIVES: This study aims to evaluate the anticancer and antibacterial activities of secondary metabolites from Penicillium sp., an endophytic fungus associated with leaves of Garcinia nobilis. METHODS: The culture filtrate from the fermentation of Penicillium sp...
September 2016: African Health Sciences
https://www.readbyqxmd.com/read/27917161/the-interaction-between-plants-and-bacteria-in-the-remediation-of-petroleum-hydrocarbons-an-environmental-perspective
#6
REVIEW
Panagiotis Gkorezis, Matteo Daghio, Andrea Franzetti, Jonathan D Van Hamme, Wouter Sillen, Jaco Vangronsveld
Widespread pollution of terrestrial ecosystems with petroleum hydrocarbons (PHCs) has generated a need for remediation and, given that many PHCs are biodegradable, bio- and phyto-remediation are often viable approaches for active and passive remediation. This review focuses on phytoremediation with particular interest on the interactions between and use of plant-associated bacteria to restore PHC polluted sites. Plant-associated bacteria include endophytic, phyllospheric, and rhizospheric bacteria, and cooperation between these bacteria and their host plants allows for greater plant survivability and treatment outcomes in contaminated sites...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27917159/predominately-uncultured-microbes-as-sources-of-bioactive-agents
#7
REVIEW
David J Newman
In this short review, I am discussing the relatively recent awareness of the role of symbionts in plant, marine-invertebrates and fungal areas. It is now quite obvious that in marine-invertebrates, a majority of compounds found are from either as yet unculturable or poorly culturable microbes, and techniques involving "state of the art" genomic analyses and subsequent computerized analyses are required to investigate these interactions. In the plant kingdom evidence is amassing that endophytes (mainly fungal in nature) are heavily involved in secondary metabolite production and that mimicking the microbial interactions of fermentable microbes leads to involvement of previously unrecognized gene clusters (cryptic clusters is one name used), that when activated, produce previously unknown bioactive molecules...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27916328/-the-plant-growth-promoting-rhizobacterium-arthrobacter-agilis-umcv2-endophytically-colonizes-medicago-truncatula
#8
Maria Elizabeth Aviles-Garcia, Idolina Flores-Cortez, Christian Hernández-Soberano, Gustavo Santoyo, Eduardo Valencia-Cantero
Arthrobacter agilis UMCV2 is a rhizosphere bacterium that promotes legume growth by solubilization of iron, which is supplied to the plant. A second growth promotion mechanism produces volatile compounds that stimulate iron uptake activities. Additionally, A. agilis UMCV2 is capable of inhibiting the growth of phytopathogens. A combination of quantitative polymerase chain reaction and fluorescence in situ hybridization techniques were used here to detect and quantify the presence of the bacterium in the internal tissues of the legume Medicago truncatula...
December 1, 2016: Revista Argentina de Microbiología
https://www.readbyqxmd.com/read/27910758/antimicrobial-coumarins-from-the-oyster-culinary-medicinal-mushroom-pleurotus-ostreatus-agaricomycetes-from-kenya
#9
Lilechi D Baraza, Wekesa Neser, Korir Cheruiyot Jackson, Juma B Fredrick, Ochieno Dennis, Kamau R Wairimu, Aggrey Osogo Keya, Matthias Heydenreich
Pleurotus ostreatus has been widely used as food because of its nutritional and medicinal properties. These have been attributed to the presence of macronutrients, minerals, vitamins, and amino acids, among other secondary metabolites. There are, however, few reports on the antimicrobial activities of different classes of purified compounds from P. ostreatus. This led to the current study, the objective of which was to chemically characterize the antibiotic activities of P. ostreatus against selected human pathogenic bacteria and endophytic fungi...
2016: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/27910702/a-new-isoquinolone-alkaloid-from-an-endophytic-fungus-r22-of-nerium-indicum
#10
Yang-Min Ma, Ke Qiao, Yang Kong, Meng-Yun Li, Lin-Xin Guo, Zhi Miao, Chao Fan
A new isoquinolone alkaloid named 5-hydroxy-8-methoxy-4-phenylisoquinolin-1(2H)-one (3), together with two known quinolinone alkaloids 3-O-methylviridicatin (1) and viridicatol (2) were isolated from the fermentation of an endophytic fungus Penicillium sp. R22 in Nerium indicum. Their structures were elucidated by NMR, IR and MS data, and were also confirmed by comparing with the reported data in the literature. Meanwhile, the antibacterial and antifungal activities of all compounds were tested, and the results showed that three compounds had strong antifungal activity...
December 2, 2016: Natural Product Research
https://www.readbyqxmd.com/read/27910191/tintelnotia-a-new-genus-in-phaeosphaeriaceae-harbouring-agents-of-cornea-and-nail-infections-in-humans
#11
S A Ahmed, W Hofmüller, M Seibold, G S de Hoog, H Harak, I Tammer, A D van Diepeningen, W Behrens-Baumann
Phaeosphaeriaceae is a family in the order Pleosporales containing numerous plant pathogens, endophytes, lichenised fungi, and environmental saprobes. A novel genus, Tintelnotia is introduced containing two species, one of which caused an eye infection and several nail infections in humans. All species of Tintelnotia produce conidia in soft pycnidia with a wide ostiole. The generic type species is T. opuntiae causing necrotic spots on cactus plants. The isolates of the human opportunist T. destructans showed variable susceptibility pattern to a panel of common antifungal agents...
December 1, 2016: Mycoses
https://www.readbyqxmd.com/read/27902318/streptomyces-capparidis-sp-nov-a-novel-endophytic-actinobacterium-isolated-from-fruits-of-capparis-spinosa-l
#12
Hong-Fei Wang, Qiu-Li Li, Min Xiao, Yong-Guang Zhang, Xing-Kui Zhou, Manik Prabhu Narsing Rao, Yan-Qing Duan, Wen-Jun Li
A novel endophytic actinobactrium strain, designated EGI 6500195T, was isolated from Capparis spinosa. Growth occurred at 10-45 °C (optimum 30 °C), pH 6-8 (optimum pH 7) and in the presence of 0-1% NaCl (w/v). The strain EGI 6500195T shared the highest 16S rRNA gene sequence similarity (97.74 %) with Streptomyces vitaminophilus DSM 41686T and less than 97% sequence similarities with other members of the genus Streptomyces. The diagnostic amino acid in the peptidoglycan was LL-diaminopimelic acid. Whole-cell hydrolysates contained glucose, ribose,fructose and mannose...
October 18, 2016: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/27902296/allostreptomyces-psammosilenae-gen-nov-sp-nov-an-endophytic-actinobacterium-isolated-from-the-roots-of-psammosilene-tunicoides-and-emended-description-of-the-family-streptomycetaceae-waksman-and-henrici-1943-al-emend-rainey-et-al-1997-emend-kim-et-al-2003-emend
#13
Mei-Juan Huang, Manik Prabhu Narsing Rao, Nimaichand Salam, Min Xiao, Hai-Quan Huang, Wen-Jun Li
A Gram-staining positive actinobacterium, designated strain YIM DR4008T was isolated from the root sample of Psammosilene tunicoides collected from Lijiang, Yunnan, China. Strain YIM DR4008T could grow at temperature ranging from 10 to 50 °C (optimum at 28-30 °C), pH 5.0-11.0 (optimum pH 7.0) and in the presence of up to 4 % (w/v) NaCl. Sequence analysis of the 16S ribosomal RNA gene revealed that strain YIM DR4008T shared highest similarity (95.0 %) with Streptomyces griseoplanus NBRC 12779T and < 95 % similarity with other known members of the genera Streptomyces, Kitasatospora and Streptacidiphilus...
October 27, 2016: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/27902284/chryseobacterium-cucumeris-sp-nov-an-endophyte-isolated-from-cucumber-cucumis-sativus-l-root-and-emended-description-of-chryseobacterium-arthrosphaerae
#14
Jin-Ju Jeong, Dong Wan Lee, Byeonghyeok Park, Mee Kyung Sang, In-Geol Choi, Ki Deok Kim
The Gram-stain-negative, yellow-pigmented, rod-shaped bacterial strain GSE06T, isolated from the surface-sterilized root of a cucumber plant grown in a field in Gunsan, Korea, was characterized by not only cultural and morphological features but also physiological, biochemical, and molecular analyses. Phylogenetic analyses based on 16S rRNA gene sequences revealed that strain GSE06T was most related to species of the genus Chryseobacterium. Furthermore, strain GSE06T exhibited the highest sequence similarities with type strains of Chryseobacterium indologenes ATCC 29897T (98...
November 17, 2016: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/27902278/chryseobacterium-endophyticum-sp-nov-isolated-from-a-maize-leaf
#15
Shih-Yao Lin, Asif Hameed, You-Cheng Liu, Yi-Han Hsu, Yu-Ting Hsieh, Wei-An Lai, Chiu-Chung Young
A Gram-stain-negative, aerobic, yellow-pigmented, flexirubin-producing, rod-shaped and endophytic bacterium, designated strain CC-YTH209T, was isolated from a maize leaf and subjected to a taxonomic study. Strain CC-YTH209T was found to grow at 15-40 °C (optimal 30 °C), at pH 6.0-8.0 (optimal pH 7.0) and in the presence of 0-2 % (optimal 1 %) (w/v) NaCl. On the basis of 16S rRNA gene sequence analysis, strain CC-YTH209T appeared to belong to the genus Chryseobacterium within the class Flavobacteriia, and was closely related to Chryseobacterium rigui CJ16T (97...
November 11, 2016: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/27902277/pedobacter-zeae-sp-nov-an-endophytic-bacterium-isolated-from-maize-root
#16
Jun-Lian Gao, Pengbo Sun, Xiao-Jie Mao, Yan-Li Du, Bing-Yan Liu, Jian-Guang Sun
A novel Gram-staining-negative, aerobic, non-motile by gliding and rod-shaped strain designated 22T was isolated from surface-sterilized root tissue of maize planted in the Fangshan District of Beijing, People's Republic of China. The highest levels of 16S rRNA gene sequence similarity were found with respect to Pedobacter suwonensis15-52T (97.5 %), Pedobacter terrae DS-57T (97.1 %) and Pedobacter alluvionis NWER-II11T (97.0 %). Phylogenetic analysis based on 16S rRNA gene sequence data indicated that strain 22T is a member of the genus Pedobacter...
October 25, 2016: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/27902235/micromonospora-parathelypteridis-sp-nov-a-novel-endophytic-actinomycete-with-antifungal-activity-isolated-from-the-root-of-parathelypteris-beddomei-bak-ching
#17
Shanshan Zhao, Chongxi Liu, Weiwei Zheng, Zhaoxu Ma, Tingting Cao, Junwei Zhao, Kai Yan, Wensheng Xiang, Xiangjing Wang
A novel endophytic actinomycete with antifungal activity, designated strain NEAU-JXY5T, was isolated from the root of Parathelypteris beddomei (Bak.) Ching. Strain NEAU-JXY5T showed closest 16S rRNA gene sequence similarity to Micromonospora luteifusca GUI2T (99.31 %), and phylogenetically clustered with Micromonospora noduli GUI43T (99.24 %), Micromonospora lycii NEAU-gq11T (99.19 %), Micromonospora zeae NEAU-gq9T (99.12 %), Micromonospora saelicesensis Lupac 09T (98.97 %), Micromonospora vinacea GUI63T (98...
October 26, 2016: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/27902223/bacillus-capparidis-sp-nov-a-novel-endophytic-bacterium-isolated-from-roots-of-capparis-spinosa-l
#18
Hong-Fei Wang, Qiu-Li Li, Yong-Guang Zhang, Min Xiao, Xing-Kui Zhou, Jian-Wei Guo, Yan-Qing Duan, Wen-Jun Li
A novel endophytic bacterium, designated strain EGI 6500252T, was isolated from the surface-sterilized roots of medicinal plant (Capparis spinosa L.) collected from Urumqi city, Xinjiang, north-west of China. Cells were Gram-staining-positive, non-motile, aerobic, catalase- and oxidase-positive, rod-shaped and did not display spore formation. Strain EGI 6500252T grew at 10-40 °C (optimum 25-30 °C) and pH 6.0-8.0 (optimum pH 7.0), and in the presence of 0-10 % NaCl (w/v) (optimum 0-3 %). The major cellular fatty acids (> 10 %) were identified as iso-C15:0, anteiso-C15:0, anteiso-C17:0 and Sum In feature 4...
October 26, 2016: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/27901067/a-chitin-deacetylase-from-the-endophytic-fungus-pestalotiopsis-sp-efficiently-inactivates-the-elicitor-activity-of-chitin-oligomers-in-rice-cells
#19
Stefan Cord-Landwehr, Rebecca L J Melcher, Stephan Kolkenbrock, Bruno M Moerschbacher
To successfully survive in plants, endophytes need strategies to avoid being detected by the plant immune system, as the cell walls of endophytes contain easily detectible chitin. It is possible that endophytes "hide" this chitin from the plant immune system by modifying it, or oligomers derived from it, using chitin deacetylases (CDA). To explore this hypothesis, we identified and expressed a CDA from Pestalotiopsis sp. (PesCDA), an endophytic fungus, in E. coli and characterized this enzyme and its chitosan oligomer products...
November 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27900685/assessing-bacterial-and-fungal-diversity-in-the-plant-endosphere
#20
Bernd Wemheuer, Franziska Wemheuer
Plants are colonized various microorganisms including endophytes. These microbes can play an important role in agricultural production as they promote plant growth and/or enhance the resistance of their host plant against diseases and environmental stress conditions. Although culture-independent molecular approaches such as DNA barcoding have greatly enhanced our understanding of bacterial and fungal endophyte communities, there are some methodical problems when investigating endophyte diversity. One main issue are sequence contaminations such as plastid-derived rRNA gene sequences which are co-amplified due to their high homology to bacterial 16S rRNA genes...
2017: Methods in Molecular Biology
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