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Peng J, Chen Z, Chen X, Zheng R, Lu S, Seyab M, Yang F, Li Q, Tang Q. Insecticidal potential of a Consolida ajacis extract and its major compound (ethyl linoleate) against the diamondback moth, Plutella xylostella. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 195:105557. [PMID: 37666618 DOI: 10.1016/j.pestbp.2023.105557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 07/16/2023] [Accepted: 07/25/2023] [Indexed: 09/06/2023]
Abstract
The diamondback moth (Plutella xylostella) is one of the most destructive lepidopteran pests of cruciferous vegetables. However, DBM has developed resistance to current chemical and biological insecticides used for its control, indicating the necessity for finding new insecticides against it. Bio-insecticides derived from plant extracts are eco-friendly alternatives to synthetic pesticides. The aims of this study were to evaluate the insecticidal activity of Consolida ajacis seed extracts against DBM, the underlying mechanism of the control effect of promising extracts, and the identification of the main insecticidal compounds of these extracts. The results showed that ethyl acetate extract of C. ajacis seed exhibited strong contact toxicity (LC50: 5.05 mg/mL), ingestion toxicity, antifeedant, and oviposition deterrent activities against DBM, among the extracts evaluated. At 72 h, glutathiase, acetylcholinesterase, carboxylesterase, peroxidase, and superoxide dismutase activities were inhibited, but catalase activity was activated. The main compound identified from the extract was ethyl linoleate, which had the most significant insecticidal activity on the diamondback moths. This study's findings provide a better understanding of the insecticidal activity of ethyl acetate extract obtained from C. ajacis and its main component (ethyl linoleate). This will help in the development of new insecticides to control DBM.
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Affiliation(s)
- Jun Peng
- Anhui Province Key Laboratory of Integrated Pest Management on Crops, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Key Laboratory of Biology and Sustainable Management of Plant Diseases and Pests of Anhui Higher Education Institutes, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Zihan Chen
- Anhui Province Key Laboratory of Integrated Pest Management on Crops, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Key Laboratory of Biology and Sustainable Management of Plant Diseases and Pests of Anhui Higher Education Institutes, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Xueqian Chen
- Anhui Province Key Laboratory of Integrated Pest Management on Crops, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Key Laboratory of Biology and Sustainable Management of Plant Diseases and Pests of Anhui Higher Education Institutes, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Renwen Zheng
- Anhui Province Key Laboratory of Integrated Pest Management on Crops, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Key Laboratory of Biology and Sustainable Management of Plant Diseases and Pests of Anhui Higher Education Institutes, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Sihan Lu
- Anhui Province Key Laboratory of Integrated Pest Management on Crops, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Key Laboratory of Biology and Sustainable Management of Plant Diseases and Pests of Anhui Higher Education Institutes, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Muhammad Seyab
- Anhui Province Key Laboratory of Integrated Pest Management on Crops, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Key Laboratory of Biology and Sustainable Management of Plant Diseases and Pests of Anhui Higher Education Institutes, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Fan Yang
- Anhui Province Key Laboratory of Integrated Pest Management on Crops, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Key Laboratory of Biology and Sustainable Management of Plant Diseases and Pests of Anhui Higher Education Institutes, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Qianqian Li
- Anhui Province Key Laboratory of Integrated Pest Management on Crops, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Key Laboratory of Biology and Sustainable Management of Plant Diseases and Pests of Anhui Higher Education Institutes, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Qingfeng Tang
- Anhui Province Key Laboratory of Integrated Pest Management on Crops, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Key Laboratory of Biology and Sustainable Management of Plant Diseases and Pests of Anhui Higher Education Institutes, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China.
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Kallingal A, Ayyolath A, Thachan Kundil V, Maniyeri Suresh A, Muringayil Joseph T, Haponiuk J, Thomas S, Augustine A. Divulging the anti-acetylcholinesterase activity of Colletotrichum lentis strain KU1 extract as sustainable AChE active site inhibitors. Arch Microbiol 2022; 204:713. [DOI: 10.1007/s00203-022-03288-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 09/23/2022] [Accepted: 10/17/2022] [Indexed: 11/18/2022]
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Kallingal A, Ayyolath A, Thachan Kundil V, Joseph TM, Chandra D N, Haponiuk JT, Thomas S, Variyar E J. Extraction and optimization of Penicillium sclerotiorum strain AK-1 pigment for fabric dyeing. J Basic Microbiol 2021; 61:900-909. [PMID: 34467566 DOI: 10.1002/jobm.202100349] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/16/2021] [Accepted: 08/21/2021] [Indexed: 01/14/2023]
Abstract
Recently, the demand for fungal pigments has increased due to their several benefits over synthetic dyes. Many species of fungi are known to produce pigments and a large number of fungal strains for pigment production are yet to be extensively investigated. The natural pigment from sustainable natural sources has good economic and industrial value. Many synthetic colorants used in textile and various industries have many harmful effects on the human population and environment. Pigments and coloring agents may be extracted from a wide range of fungal species. These compounds are among the natural compounds having the most significant promise for medicinal, culinary, cosmetics, and textile applications. This study attempts to isolate and optimize the fermentation conditions of Penicillium sclerotiorum strain AK-1 for pigment production. A dark yellow-colored pigment was isolated from the strain with significant extractive value and antioxidant capacity. This study also identifies that the pigment does not have any cytotoxic effect and is multicomponent. The pigment production was optimized for the parameters such as pH, temperature, carbon and nitrogen source. Fabric dyeing experiments showed significant dyeing capacity of the pigment on cotton fabrics. Accordingly, the natural dye isolated from P. sclerotiorum strain AK-1 has a high potential for industrial-scale dyeing of cotton materials.
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Affiliation(s)
- Anoop Kallingal
- Department of Biotechnology and Microbiology, Kannur University, Palayad, Kerala, India
| | - Aravind Ayyolath
- Department of Biotechnology and Microbiology, Kannur University, Palayad, Kerala, India
| | - Varun Thachan Kundil
- Department of Biotechnology and Microbiology, Kannur University, Palayad, Kerala, India
| | - Tomy M Joseph
- Polymers Technology Department, Chemical Faculty, Gdansk University of Technology, Gdansk, Poland
| | - Naveen Chandra D
- Biotechnology Unit, Department of Biosciences, Mangalore University, Mangalagangothri, Karnataka, India
| | - Józef T Haponiuk
- Polymers Technology Department, Chemical Faculty, Gdansk University of Technology, Gdansk, Poland
| | - Sabu Thomas
- International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam, Kerala, India
| | - Jayadevi Variyar E
- Department of Biotechnology and Microbiology, Kannur University, Palayad, Kerala, India
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Kallingal A, Thachan Kundil V, Ayyolath A, Muringayil Joseph T, Kar Mahapatra D, Haponiuk JT, Variyar EJ. Identification of sustainable trypsin active-site inhibitors from Nigrospora sphaerica strain AVA-1. J Basic Microbiol 2021; 61:709-720. [PMID: 34228389 DOI: 10.1002/jobm.202100221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 05/25/2021] [Accepted: 06/24/2021] [Indexed: 11/09/2022]
Abstract
Trypsin is a protein-digesting enzyme that is essential for the growth and regeneration of bone, muscle, cartilage, skin, and blood. The trypsin inhibitors have various role in diseases such as inflammation, Alzheimer's disease, pancreatitis, rheumatoid arthritis, cancer prognosis, metastasis and so forth. From 10 endophytic fungi isolated, we were able to screen only one strain with the required activity. The fungus with activity was obtained as an endophyte from Dendrophthoe falcata and was later identified as Nigrospora sphaerica. The activity was checked by enzyme assays using trypsin. The fungus was fermented and the metabolites were extracted and further purified by bioassay-guided chromatographic methods and the compound isolated was identified using gas chromatography-mass spectrometry. The compound was identified as quercetin. Docking studies were employed to study the interaction. The absorption, distribution, metabolism, and excretion analysis showed satisfactory results and the compound has no AMES and hepatotoxicity. This study reveals the ability of N. sphaerica to produce bioactive compound quercetin has been identified as a potential candidate for trypsin inhibition. The present communication describes the first report claiming that N. sphaerica strain AVA-1 can produce quercetin and it can be considered as a sustainable source of trypsin active-site inhibitors.
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Affiliation(s)
- Anoop Kallingal
- Department of Biotechnology and Microbiology, School of Life Science, Kannur University, Palayad, Kerala, India
| | - Varun Thachan Kundil
- Department of Biotechnology and Microbiology, School of Life Science, Kannur University, Palayad, Kerala, India
| | - Aravind Ayyolath
- Department of Biotechnology and Microbiology, School of Life Science, Kannur University, Palayad, Kerala, India
| | - Tomy Muringayil Joseph
- Polymers Technology Department, Chemical Faculty, Gdansk University of Technology, Gdansk, Poland
| | - Debarshi Kar Mahapatra
- Department of Pharmaceutical Chemistry, Dadasaheb Balpande College of Pharmacy, Nagpur, Maharashtra, India
| | - Józef T Haponiuk
- Polymers Technology Department, Chemical Faculty, Gdansk University of Technology, Gdansk, Poland
| | - E Jayadevi Variyar
- Department of Biotechnology and Microbiology, School of Life Science, Kannur University, Palayad, Kerala, India
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Khaw KY, Chong CW, Murugaiyah V. LC-QTOF-MS analysis of xanthone content in different parts of Garcinia mangostana and its influence on cholinesterase inhibition. J Enzyme Inhib Med Chem 2021; 35:1433-1441. [PMID: 32608273 PMCID: PMC7717613 DOI: 10.1080/14756366.2020.1786819] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Mangosteen is one of the best tasting tropical fruit widely cultivated in Southeast Asia. This study aimed to quantify xanthone content in different parts of Garcinia mangostana by LC-QTOF-MS and determine its influence on their cholinesterase inhibitory activities. The total xanthone content in G. mangostana was in the following order: pericarp > calyx > bark > stalk > stem > leaves > aril. The total xanthone content of pericarp was 100 times higher than the aril. Methanol extracts of the pericarp and calyx demonstrated the most potent inhibitory activities against acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) with IC50 values of 0.90 and 0.37 µg/mL, respectively. Statistical analysis showed a strong correlation between xanthone content and cholinesterase inhibition. Nonmetric multidimensional scaling analysis revealed α-mangostin and γ-mangostin of pericarp as the key metabolites contributing to cholinesterase inhibition. Due to the increasing demand of mangosteen products, repurposing of fruit waste (pericarp) has great potential for enhancement of the cognitive health of human beings.
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Affiliation(s)
- Kooi Yeong Khaw
- School of Pharmacy, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya, Selangor, Malaysia
| | - Chun Wie Chong
- School of Pharmacy, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya, Selangor, Malaysia
| | - Vikneswaran Murugaiyah
- Discipline of Pharmacology, School of Pharmaceutical Sciences, Universiti Sains Malaysia, Penang, Malaysia
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Wen-Xia H, Zhong-Wen H, Min J, Han Z, Wei-Ze L, Li-Bin Y, Fei L, Lu H, Ning Z, Xiao-Feng L. Five novel and highly efficient endophytic fungi isolated from Huperzia serrata expressing huperzine A for the treatment of Alzheimer's disease. Appl Microbiol Biotechnol 2020; 104:9159-9177. [PMID: 32970179 DOI: 10.1007/s00253-020-10894-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 08/30/2020] [Accepted: 09/05/2020] [Indexed: 10/23/2022]
Abstract
Huperzine A (Hup A) is an important drug for treating Alzheimer's disease (AD) and mainly extracted from the Huperzia serrata (Thunb.) Trevis. (Lycopodiaceae) (HS). Nevertheless, the content of Hup A in HS is very low of 0.007% with growing circle of 8 to 10 years, and the chemical synthesis of Hup A still has some insurmountable limitations in the industrialized production. So, the available resources of Hup A for clinical treatment of AD are scarce. The purpose of this work was to construct a biosynthesis platform based on the endophytic fungi from HS. In this work, five endophytic fungi Mucor racemosus NSH-D, Mucor fragilis NSY-1, Fusarium verticillioides NSH-5, Fusarium oxysporum NSG-1, and Trichoderma harzianum NSW-V were firstly found and isolated from the Chinese folk medicine HS, which were identified according to their morphological characteristics and nuclear ribosomal DNA ITS sequences. The highest efficient fungus could effectively biosynthesize Hup A in a liquid culture of 319.8 ± 0.17 mg/L which were 112 times higher than that of other reported conventional endophytic fungi. Moreover, these fungi with higher hereditary stability could possess the initial expressing ability of Hup A after 40 generations, and the expressed Hup A from these biosynthesis systems has prior physicochemical properties, a better inhibition activity of acetylcholinesterase and a lower cytotoxicity compared with the listed active pharmaceutical ingredients (APIs) of Hup A. These results provide promising alternative resources for producing Hup A at an industrial scale by biosynthesis, and it may also shed light on millions of AD patients. KEY POINTS: • Five novel endophytic fungi with high stability could highly express prior Hup A Graphical abstract.
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Affiliation(s)
- Han Wen-Xia
- College of Medical Technology, Xi'an Medical University, Xi'an, 710021, People's Republic of China
| | - Han Zhong-Wen
- Department of Oncology, Fushan Hospital of Traditional Chinese Medicine of Tumor, Shijiazhuang, 050200, People's Republic of China
| | - Jia Min
- Shaanxi Key Laboratory of Ischemic Cardiovascular Disease, Institute of Basic and Translational Medicine, Xi'an Medical University, Xi'an, 710021, Shaanxi, People's Republic of China
| | - Zhang Han
- College of Pharmacy, Xi'an Medical University, Xinwang road 1, Weiyang Zone, Xi'an, 710021, People's Republic of China
| | - Li Wei-Ze
- College of Pharmacy, Xi'an Medical University, Xinwang road 1, Weiyang Zone, Xi'an, 710021, People's Republic of China.
| | - Yang Li-Bin
- College of Pharmacy, Xi'an Medical University, Xinwang road 1, Weiyang Zone, Xi'an, 710021, People's Republic of China
| | - Liang Fei
- College of Pharmacy, Xi'an Medical University, Xinwang road 1, Weiyang Zone, Xi'an, 710021, People's Republic of China
| | - Han Lu
- College of Pharmacy, Xi'an Medical University, Xinwang road 1, Weiyang Zone, Xi'an, 710021, People's Republic of China
| | - Zhao Ning
- College of Pharmacy, Xi'an Medical University, Xinwang road 1, Weiyang Zone, Xi'an, 710021, People's Republic of China
| | - Li Xiao-Feng
- College of Medical Technology, Xi'an Medical University, Xi'an, 710021, People's Republic of China
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Cruz JS, da Silva CA, Hamerski L. Natural Products from Endophytic Fungi Associated with Rubiaceae Species. J Fungi (Basel) 2020; 6:E128. [PMID: 32784526 PMCID: PMC7558492 DOI: 10.3390/jof6030128] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 07/22/2020] [Accepted: 07/24/2020] [Indexed: 02/06/2023] Open
Abstract
This review presents the chemical diversity and pharmacological properties of secondary metabolites produced by endophytic fungi associated with various genera of Rubiaceae. Several classes of natural products are described for these endophytes, although, this study highlights the importance of some metabolites, which are involved in antifungal, antibacterial, anti-protozoal activities; neurodegenerative diseases; cytotoxic activity; anti-inflammatory and antioxidant activity; and hyperglycemic control.
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Affiliation(s)
- Jacqueline Santos Cruz
- Department of Chemistry, Military Institute of Engineering, Praça General Tibúrcio 80, Rio de Janeiro 22290-270, Brazil;
| | - Carla Amaral da Silva
- Walter Mors Institute of Research on Natural Products, Federal University of Rio de Janeiro, Rua Carlos Chagas Filho 373, Rio de Janeiro 21941-902, Brazil;
| | - Lidilhone Hamerski
- Walter Mors Institute of Research on Natural Products, Federal University of Rio de Janeiro, Rua Carlos Chagas Filho 373, Rio de Janeiro 21941-902, Brazil;
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Zaki AG, El-Sayed ESR, Abd Elkodous M, El-Sayyad GS. Microbial acetylcholinesterase inhibitors for Alzheimer's therapy: recent trends on extraction, detection, irradiation-assisted production improvement and nano-structured drug delivery. Appl Microbiol Biotechnol 2020; 104:4717-4735. [PMID: 32285176 PMCID: PMC7223626 DOI: 10.1007/s00253-020-10560-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 03/09/2020] [Accepted: 03/18/2020] [Indexed: 12/17/2022]
Abstract
Abstract Neurodegenerative disorders especially Alzheimer’s disease (AD) are significantly threatening the public health. Acetylcholinesterase (AChE) inhibitors are compounds of great interest which can be used as effective agents for the symptomatic treatment of AD. Although plants are considered the largest source for these types of inhibitors, the microbial production of AChE inhibitors represents an efficient, easily manipulated, eco-friendly, cost-effective, and alternative approach. This review highlights the recent advances on the microbial production of AChE inhibitors and summarizes all the previously reported successful studies on isolation, screening, extraction, and detecting methodologies of AChE inhibitors from the microbial fermentation, from the earliest trials to the most promising anti-AD drug, huperzine A (HupA). In addition, improvement strategies for maximizing the industrial production of AChE inhibitors by microbes will be discussed. Finally, the promising applications of nano-material-based drug delivery systems for natural AChE inhibitor (HupA) will also be summarized. Key Points • AChE inhibitors are potential therapies for Alzheimer’s disease. • Microorganisms as alternate sources for prospective production of such inhibitors. • Research advances on extraction, detection, and strategies for production improvement. • Nanotechnology-based approaches for an effective drug delivery for Alzheimer’s disease.
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Affiliation(s)
- Amira G Zaki
- Plant Research Department, Nuclear Research Center, Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt.
| | - El-Sayed R El-Sayed
- Plant Research Department, Nuclear Research Center, Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt
| | - M Abd Elkodous
- Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, Toyohashi, Aichi, 441-8580, Japan.,Center for Nanotechnology (CNT), School of Engineering and Applied Sciences, Nile University, Sheikh Zayed, Giza, 16453, Egypt
| | - Gharieb S El-Sayyad
- Drug Microbiology Lab, Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt. .,Chemical Engineering Department, Egyptian Armed Forces, Military Technical College (MTC), Cairo, Egypt.
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Abstract
The ability of endophytes to colonize every plant tissue has led to the opportunity of using the microorganism in a lot of biological applications. Endophytes are beneficial to their host cells as such its application is observed in every aspects of life. This study therefore endeavored to give an analysis of endophytes, what they were and what they had been used for till the present time. Sampling of several literature studies in endophytes was done in this study to enable a complete understanding of the mechanism of application of the actions of endophytes, so as to be able to do a thorough assessment of the current state in the knowledge of the microbes. From the complete analysis of the literature on the application and use of endophytes, in nutrient asquition and increase the stress tolerance in plants. This study provided a platform for further research gaps through the presentation of what endophytes were, what they had been used for till date, the mechanism of operation of the micro-organism and the type of interaction between them and their hosts. There are still ways to improve on the methods of application of endophytes as a type of biological organism. This will be done by adjusting to the current trends in biological studies using molecular mechanization, following an intensive further study on endophyte mechanisms.
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Lima MTNS, Santos LBD, Bastos RW, Nicoli JR, Takahashi JA. Antimicrobial activity and acetylcholinesterase inhibition by extracts from chromatin modulated fungi. Braz J Microbiol 2018; 49:169-176. [PMID: 28818332 PMCID: PMC5790575 DOI: 10.1016/j.bjm.2017.06.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 06/17/2017] [Indexed: 12/02/2022] Open
Abstract
Major health challenges as the increasing number of cases of infections by antibiotic multiresistant microorganisms and cases of Alzheimer's disease have led to searching new control drugs. The present study aims to verify a new way of obtaining bioactive extracts from filamentous fungi with potential antimicrobial and acetylcholinesterase inhibitory activities, using epigenetic modulation to promote the expression of genes commonly silenced. For such finality, five filamentous fungal species (Talaromyces funiculosus, Talaromyces islandicus, Talaromyces minioluteus, Talaromyces pinophilus, Penicillium janthinellum) were grown or not with DNA methyltransferases inhibitors (procainamide or hydralazine) and/or a histone deacetylase inhibitor (suberohydroxamic acid). Extracts from T. islandicus cultured or not with hydralazine inhibited Listeria monocytogenes growth in 57.66±5.98% and 15.38±1.99%, respectively. Increment in inhibition of acetylcholinesterase activity was observed for the extract from P. janthinellum grown with procainamide (100%), when compared to the control extract (39.62±3.76%). Similarly, inhibition of acetylcholinesterase activity increased from 20.91±3.90% (control) to 92.20±3.72% when the tested extract was obtained from T. pinophilus under a combination of suberohydroxamic acid and procainamide. Concluding, increases in antimicrobial activity and acetylcholinesterase inhibition were observed when fungal extracts in the presence of DNA methyltransferases and/or histone deacetylase modulators were tested.
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Affiliation(s)
| | - Larissa Batista Dos Santos
- Universidade Federal de Minas Gerais, Instituto de Ciências Exatas, Departamento de Química, Belo Horizonte, MG, Brazil
| | - Rafael Wesley Bastos
- Universidade Federal de Minas Gerais, Instituto de Ciências Biológicas, Departamento de Microbiologia, Belo Horizonte, MG, Brazil
| | - Jacques Robert Nicoli
- Universidade Federal de Minas Gerais, Instituto de Ciências Biológicas, Departamento de Microbiologia, Belo Horizonte, MG, Brazil
| | - Jacqueline Aparecida Takahashi
- Universidade Federal de Minas Gerais, Instituto de Ciências Exatas, Departamento de Química, Belo Horizonte, MG, Brazil.
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Singh M, Kumar A, Singh R, Pandey KD. Endophytic bacteria: a new source of bioactive compounds. 3 Biotech 2017; 7:315. [PMID: 28955612 DOI: 10.1007/s13205-017-0942-z] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 09/05/2017] [Indexed: 12/20/2022] Open
Abstract
In recent years, bioactive compounds are in high demand in the pharmaceuticals and naturopathy, due to their health benefits to human and plants. Microorganisms synthesize these compounds and some enzymes either alone or in association with plants. Microbes residing inside the plant tissues, known as endophytes, also produce an array of these compounds. Endophytic actinomycetes act as a promising resource of biotechnologically valuable bioactive compounds and secondary metabolites. Endophytic Streptomyces sp. produced some novel antibiotics which are effective against multi-drug-resistant bacteria Antimicrobial agents produced by endophytes are eco-friendly, toxic to pathogens and do not harm the human. Endophytic inoculation of the plants modulates the synthesis of bioactive compounds with high pharmaceutical properties besides promoting growth of the plants. Hydrolases, the extracellular enzymes, produced by endophytic bacteria, help the plants to establish systemic resistance against pathogens invasion. Phytohormones produced by endophytes play an essential role in plant development and drought resistance management. The high diversity of endophytes and their adaptation to various environmental stresses seem to be an untapped source of new secondary metabolites. The present review summarizes the role of endophytic bacteria in synthesis and modulation of bioactive compounds.
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