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https://www.readbyqxmd.com/read/28636663/an-endophytic-basidiomycete-grammothele-lineata-isolated-from-corchorus-olitorius-produces-paclitaxel-that-shows-cytotoxicity
#1
Avizit Das, Mohammad Imtiazur Rahman, Ahlan Sabah Ferdous, Al- Amin, Mohammad Mahbubur Rahman, Nilufar Nahar, Md Aftab Uddin, Mohammad Riazul Islam, Haseena Khan
Grammothele lineata, an endophyte isolated in our laboratory from jute (Corchorus olitorius acc. 2015) was found to be a substantial paclitaxel producer. Taxol and its related compounds, produced by this endophyte were extracted by growing the fungus in simple nutrient media (potato dextrose broth, PDB). Taxol was identified and characterized by different analytical techniques (TLC, HPLC, FTIR, LC-ESI-MS/MS) following its extraction by ethyl acetate. In PDB media, this fungus was found to produce 382.2 μgL-1 of taxol which is about 7...
2017: PloS One
https://www.readbyqxmd.com/read/28634640/the-microbiome-of-eucalyptus-roots-under-different-management-conditions-and-its-potential-for-biological-nitrogen-fixation
#2
Eduardo da Siva Fonseca, Raquel Silva Peixoto, Alexandre Soares Rosado, Fabiano de Carvalho Balieiro, James M Tiedje, Caio Tavora Coelho da Costa Rachid
Eucalyptus plantations offer a cost-effective and renewable source of raw material. There is substantial interest in improving forestry production, especially through sustainable strategies such as the use of plant growth-promoting bacteria. However, little is known about Eucalyptus microbiology. In this study, the endophytic bacterial community was assessed in Eucalyptus urograndis roots using culture-dependent and culture-independent techniques with plants grown under different conditions. Three phyla accounted for approximately 95% of the community, with Actinobacteria corresponding to approximately 59%...
June 21, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28633407/exploring-fungus-plant-n-transfer-in-a-tripartite-ant-plant-fungus-mutualism
#3
Céline Leroy, Alain Jauneau, Yves Martinez, Armelle Cabin-Flaman, David Gibouin, Jérôme Orivel, Nathalie Séjalon-Delmas
Background and Aims: The plant Hirtella physophora , the ant Allomerus decemarticulatus and a fungus, Trimmatostroma sp., form a tripartite association. The ants manipulate both the plant trichomes and the fungus to build galleries under the stems of their host plant used to capture prey. In addition to its structural role, the fungus also improves nutrient uptake by the host plant. But it still remains unclear whether the fungus plays an indirect or a direct role in transferring nutrients to the plant...
June 13, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28632186/insights-into-penicillium-brasilianum-secondary-metabolism-and-its-biotechnological-potential
#4
REVIEW
Jaqueline Moraes Bazioli, Luciana Da Silva Amaral, Taícia Pacheco Fill, Edson Rodrigues-Filho
Over the past few years Penicillium brasilianum has been isolated from many different environmental sources as soil isolates, plant endophytes and onion pathogen. All investigated strains share a great ability to produce bioactive secondary metabolites. Different authors have investigated this great capability and here we summarize the metabolic potential and the biological activities related to P. brasilianum's metabolites with diverse structures. They include secondary metabolites of an alkaloid nature, i...
June 20, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28631515/one-pair-of-new-cyclopentaisochromenone-enantiomer-from-alternaria-sp-tnxy-p-1-and-their-cytotoxic-activity
#5
Xiao-Jie Lu, Shao-Fei Chen, Xiang-Wei Xu, Dan Zhao, Hai-Feng Wang, Jiao Bai, Hui-Ming Hua, Gang Chen, Yue-Hu Pei
One pair of new cyclopentaisochromenone derivatives, (+)-(S)-6-hydroxy-1,8-dimethoxy-3a-methyl-3,3a-dihydrocyclopenta[c]isochromene-2,5-dione (1a) and (-)-(R)-6-hydroxy-1,8-dimethoxy-3a-methyl-3,3a-dihydrocyclopenta[c]isochromene-2,5-dione (1b), together with seven known analog 2‒8, were isolated from a rice solid culture of the endophytic fungus Alternaria sp. TNXY-P-1, obtained from fresh leaf of Arisaema heterophyllum. Their structures were elucidated on the basis of detailed 1D, 2D NMR, and HRESIMS analysis...
June 20, 2017: Journal of Asian Natural Products Research
https://www.readbyqxmd.com/read/28629493/naumannella-huperziae-sp-nov-an-endophytic-actinobacterium-isolated-from-huperzia-serrata-thunb
#6
Ye Sun, Hua-Hong Chen, Hong-Min Sun, Meng-Jie Ai, Jing Su, Li-Yan Yu, Yu-Qin Zhang
An endophytic, short rod-shaped, non-motile and non-spore-forming actinobacterium, designated strain CPCC 204135T, was isolated from a surface-sterilized medicinal plant, Huperzia serrata (Thunb.), collected from Sichuan Province, south-west China. Strain CPCC 204135T was observed to grow at temperatures between 20 and 37 °C (optimum, 28-32 °C), at pH 6.0-9.0 (optimum, pH 7.0-8.0) and in the presence of 0-9.0 % (w/v) NaCl (optimum, 0-3 %). Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain CPCC 204135T belonged to the genus Naumannella, showing the highest level of 16S rRNA gene sequence similarity with Naumannella halotolerans DSM 24323T (97...
June 20, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28625729/vaccinols-j-s-ten-new-salicyloid-derivatives-from-the-marine-mangrove-derived-endophytic-fungus-pestalotiopsis-vaccinii
#7
Jun-Feng Wang, Rui Liang, Sheng-Rong Liao, Bin Yang, Zheng-Chao Tu, Xiu-Ping Lin, Bin-Gui Wang, Yonghong Liu
Ten new salicyloid derivatives, namely vaccinols J-S (1-10), along with five known compounds (11-15) were isolated from Pestalotiopsis vaccinii (cgmcc3.9199) endogenous with the mangrove plant Kandelia candel (L.) Druce (Rhizophoraceae). Their structures including absolute configurations were established on the basis of spectroscopic analysis, optical rotation, CD spectra, quantum ECD calculations. To the best of our knowledge, vaccinol J (1) is the first example of salicyloid derivatives containing 2-methylfuran moiety...
June 15, 2017: Fitoterapia
https://www.readbyqxmd.com/read/28624682/effect-of-the-fungus-piriformospora-indica-on-physiological-characteristics-and-root-morphology-of-wheat-under-combined-drought-and-mechanical-stresses
#8
Fatemeh Hosseini, Mohammad Reza Mosaddeghi, Anthony Roger Dexter
This study was done to evaluate the effects of the root-colonizing endophytic fungus Piriformospora indica on wheat growth under combined drought and mechanical stresses. Inoculated (colonized) and non-inoculated (uncolonized) wheat (Triticum aestivum L. cv. Chamran) seedlings were planted in growth chambers filled with moist sand (at a matric suction of 20 hPa). Slight, moderate and severe mechanical stresses (i.e., penetration resistance, Qp, of 1.17, 4.17 and 5.96 MPa, respectively) were produced by a dead-load technique (i...
June 7, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28623306/diversity-of-endophytic-mycobiota-of-tropical-tree-tectona-grandis-linn-f-spatiotemporal-and-tissue-type-effects
#9
Dheeraj K Singh, Vijay K Sharma, Jitendra Kumar, Ashish Mishra, Satish K Verma, Thomas N Sieber, Ravindra N Kharwar
Fungal endophytes were isolated from leaf, bark and stem of Tectona grandis Linn.f. sampled at four geographical locations in winter, summer and monsoon seasons. The recovered 5089 isolates were assigned to 45 distinct morphotypes based on morphology. The sequences of the internal transcribed spacers (ITS) of the nrDNA of some morphotypes were identical, but morphological differences were strong enough to consider these morphotypes as separate species. Forty-three morphotypes were assigned to ascomycotina and two to basidiomycotina...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28622646/enhanced-degradation-of-chlorpyrifos-in-rice-oryzasativa-l-by-five-strains-of-endophytic-bacteria-and-their-plant-growth-promotional-ability
#10
Fayun Feng, Jing Ge, Yisong Li, Shuang He, Jianfeng Zhong, Xianjing Liu, Xiangyang Yu
Endophytic bacteria reside in plant tissues, such as roots, stems, leaves and seeds. Most of them can stimulate plant growth or alleviate phytotoxicity of pollutants. There are handful species with dual functions stimulating plant growth and degrading pollutants have been reported. Five endophytic bacteria were isolated from chlorpyrifos (CP) treated rice plants and identified as Pseudomonas aeruginosa strain RRA, Bacillus megaterium strain RRB, Sphingobacterium siyangensis strain RSA, Stenotrophomonas pavanii strain RSB and Curtobacterium plantarum strain RSC according to morphological characteristics, physiological and biochemical tests, and 16S rDNA phylogeny...
June 3, 2017: Chemosphere
https://www.readbyqxmd.com/read/28621547/endophytic-bacteria-enhance-remediation-of-tannery-effluent-in-constructed-wetlands-vegetated-with-leptochloa-fusca
#11
Sobia Ashraf, Muhammad Afzal, Muhammad Naveed, Muhammad Shahid, Zahir Ahmad Zahir
The use of constructed wetlands (CWs) is a promising approach for the remediation of wastewater. The present study aims to develop a plant-bacterial system within CWs for efficient remediation of tannery effluent. In a vertical flow CW vegetated with Leptochloa fusca (Kallar grass), a consortium of three different endophytic bacteria, Pantoea stewartii ASI11, Microbacterium arborescens HU33, and Enterobacter sp. HU38, was used for bioaugmentation. Constructed wetlands vegetated with only L. fusca had the potential to remediate tannery effluent, but augmentation with endophytic bacteria enhanced the growth of L...
June 16, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28621107/bioconversion-of-pinoresinol-diglucoside-from-glucose-using-resting-and-freeze-dried-phomopsis-sp-xp-8-cells
#12
Zhenhong Gao, Muhammad Shahid Riaz Rajoka, Jing Zhu, Zhiwei Zhang, Yan Zhang, Jinxin Che, Xiaoguang Xu, Junling Shi
Phomopsis sp. XP-8 (an endophytic fungus) was previously found to produce pinoresinol diglucoside (PDG), a major antihypertensive compound of Tu-Chung (the bark of Eucommia ulmoides Oliv.), which is widely used in Chinese traditional medicines. In the present study, two bioconversion systems were developed for the production of PDG in Tris-HCl buffer containing glucose and Phomopsis sp. XP-8 cells (both resting and freeze-dried). When other factors remained unchanged, the bioconversion time, glucose concentration, cell ages, cell dosage, pH, temperature, and stirring speed influenced PDG production in a similar and decreasing manner after an initial increase with increasing levels for each factor...
June 16, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28621105/isolation-purification-and-identification-of-taxol-and-related-taxanes-from-taxol-producing-fungus-aspergillus-niger-subsp-taxi
#13
Dan Li, Dongwei Fu, Yue Zhang, Xueling Ma, Liguo Gao, Xioahua Wang, Dongpo Zhou, Kai Zhao
The content of taxol in the bark of yews is very low, and this is not affordable from the environmental point of view. Thus, it is a necessity to look for alternative sources of taxol production to solve its supply. Currently a large portion of the taxol in the market comes from chemical semi-synthesis, but the semi-synthetic precursors such as baccatin Ⅲ and 10-deacetyl-baccatin Ⅲ are extracted from needles and twigs of yew trees. Taxol-producing fungi as a renewable resource is a very promise to increase the scale of taxol production...
June 16, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28620254/isolation-morphological-identification-and-in-vitro-antibacterial-activity-of-endophytic-bacteria-isolated-from-azadirachta-indica-neem-leaves
#14
Ankit Kumar Singh, Rajesh Kumar Sharma, Varsha Sharma, Tanmay Singh, Rajesh Kumar, Dimple Kumari
AIM: The objective of this study was to isolate endophytic bacteria from Azadirachta indica (neem) leaves, their identification and investigate their antibacterial activity against three Gram-positive bacteria, Staphylococcus aureus, Streptococcus pyogenes and Bacillus cereus and Gram-negative bacteria Escherichia coli, Salmonella Typhimurium and Klebsiella pneumoniae. MATERIALS AND METHODS: Fresh leaves of A. indica (neem) was procured from the Department of Botany, JNKVV, Jabalpur...
May 2017: Veterinary World
https://www.readbyqxmd.com/read/28619816/correction-for-vazquez-hernandez-et-al-draft-genome-sequence-of-streptomyces-scabrisporus-nf3-an-endophyte-isolated-from-amphipterygium-adstringens
#15
Melissa Vazquez-Hernandez, Corina Diana Ceapa, Stefany Daniela Rodríguez-Luna, Romina Rodríguez-Sanoja, Sergio Sánchez
No abstract text is available yet for this article.
June 15, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28619813/complete-genome-sequences-of-the-endophytic-streptomyces-sp-strains-lup30-and-lup47b-isolated-from-lucerne-plants
#16
Christopher M M Franco, Eric M Adetutu, Hoang X Le, Ross A Ballard, Ricardo Araujo, Shanan S Tobe, Bobby Paul, Sandeep Mallya, Kapaetu Satyamoorthy
The complete genome sequences of two endophytic Streptomyces sp. strains, LUP30 and LUP47B, were analyzed. These strains were isolated from surface-sterilized roots of lucerne plants from South Australia and were found to promote the growth of the rhizobial partner in vitro and significantly increased nodulation and nitrogen fixation in lucerne plants.
June 15, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28617687/preoperatively-assessable-clinical-and-pathological-risk-factors-for-parametrial-involvement-in-surgically-treated-figo-stage-ib-iia-cervical-cancer
#17
Emel Canaz, Eser Sefik Ozyurek, Baki Erdem, Merve Aldikactioglu Talmac, Ipek Yildiz Ozaydin, Ozgur Akbayir, Ceyhun Numanoglu, Volkan Ulker
OBJECTIVE: Determining the risk factors associated with parametrial involvement (PMI) is of paramount importance to decrease the multimodality treatment in early-stage cervical cancer. We investigated the preoperatively assessable clinical and pathological risk factors associated with PMI in surgically treated stage IB1-IIA2 cervical cancer. METHODS: A retrospective cohort study of women underwent Querleu-Morrow type C hysterectomy for cervical cancer stage IB1-IIA2 from 2001 to 2015...
June 14, 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/28614150/exophytic-osteochondroma-of-the-brow
#18
Frederick A Jakobiec, Fouad R Zakka, Nahyoung Grace Lee
Most boney and cartilaginous lesions of the orbit and periorbital compartments are benign, grow endophytically, and are composed of dense lamellar bone (eburnated or ivory osteomas). An 87-year-old woman had a well-circumscribed, firm, round, and exophytic lesion of the brow region for at least 15 years. Excisional surgery disclosed an osteocartilaginous lesion with an enveloping pseudocapsule (periosteum/perichondrium) and a narrow stalk connecting it to the frontal bone. The periphery of the lesion displayed lamellar bone which appeared to be replacing a central cartilaginous zone...
June 13, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28612376/first-report-on-a-novel-nigrospora-sphaerica-isolated-from-catharanthus-roseus-plant-with-anticarcinogenic-properties
#19
Farah Wahida Ayob, Khanom Simarani, Nurhayati Zainal Abidin, Jamaludin Mohamad
This paper reports on the vinca alkaloid produced by a novel Nigrospora sphaerica isolated from Catharanthus roseus. Through liquid chromatography-mass spectrometry (LCMS), only the crude mycelia extract of this fungus was positive for determination of vinblastine. This vinca alkaloid was then purified by using high-performance liquid chromatography (HPLC) and tested for cytotoxicity activity using MTT assays. The breast cell line cancer (MDA-MB 231) was treated with a purified vinblastine which was intracellulary produced by N...
June 14, 2017: Microbial Biotechnology
https://www.readbyqxmd.com/read/28612104/production-of-paclitaxel-with-anticancer-activity-by-two-local-fungal-endophytes-aspergillus-fumigatus-and-alternaria-tenuissima
#20
Ahmed A Ismaiel, Ashraf S Ahmed, Ismail A Hassan, El-Sayed R El-Sayed, Al-Zahraa A Karam El-Din
Among 60 fungal endophytes isolated from twigs, bark, and mature leaves of different plant species, two fungal isolates named TXD105 and TER995 were capable of producing paclitaxel in amounts of up to 84.41 and 37.92 μg L(-1), respectively. Based on macroscopic and microscopic characteristics, ITS1-5.8S-ITS2 rDNA sequence, and phylogenetic characteristic analysis, the two respective isolates were identified as Aspergillus fumigatus and Alternaria tenuissima. In the effort to increase paclitaxel magnitude by the two fungal strains, several fermentation conditions including selection of the proper fermentation medium, agitation rate, incubation temperature, fermentation period, medium pH, medium volume, and inoculum nature (size and age of inoculum) were tried...
June 13, 2017: Applied Microbiology and Biotechnology
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