1
|
Zhang JZ, Li XZ, Yin YB, Luo SC, Wang DX, Zheng H, Liu YX. High-throughput sequencing-based analysis of the composition and diversity of the endophyte community in roots of Stellera chamaejasme. Sci Rep 2024; 14:8607. [PMID: 38615120 PMCID: PMC11016073 DOI: 10.1038/s41598-024-59055-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 04/06/2024] [Indexed: 04/15/2024] Open
Abstract
Stellera chamaejasme (S. chamaejasme) is an important medicinal plant with heat-clearing, detoxifying, swelling and anti-inflammatory effects. At the same time, it is also one of the iconic plants of natural grassland degradation in northwest China, playing a key role in the invasion process. Plant endophytes live in healthy plant tissues and can synthesize substances needed for plant growth, induce disease resistance in host plants, and enhance plant resistance to environmental stress. Therefore, studying the root endophytes of S. chamaejasme is of great significance for mining beneficial microbial resources and biological prevention and control of S. chamaejasme. This study used Illumina MiSeq high-throughput sequencing technology to analyze the composition and diversity of endophytes in the roots of S. chamaejasme in different alpine grasslands (BGC, NMC and XGYZ) in Tibet. Research results show that the main phylum of endophytic fungi in the roots of S. chamaejasme in different regions is Ascomycota, and the main phyla of endophytic bacteria are Actinobacteria, Proteobacteria and Firmicutes (Bacteroidota). Overall, the endophyte diversity of the NMC samples was significantly higher than that of the other two sample sites. Principal coordinate analysis (PCoA) and permutational multivariate analysis of variance (PERMANOVA) results showed significant differences in the composition of endophytic bacterial and fungal communities among BGC, NMC and XGYZ samples. Co-occurrence network analysis of endophytes showed that there were positive correlations between fungi and some negative correlations between bacteria, and the co-occurrence network of bacteria was more complex than that of fungi. In short, this study provides a vital reference for further exploring and utilizing the endophyte resources of S. chamaejasme and an in-depth understanding of the ecological functions of S. chamaejasme endophytes.
Collapse
Affiliation(s)
- Jun-Ze Zhang
- Key Laboratory of Biodiversity and Environment on the Qinghai-Tibetan Plateau, Ministry of Education, School of Ecology and Environment, Tibet University, Lhasa, China
| | - Xin-Zhong Li
- Key Laboratory of Biodiversity and Environment on the Qinghai-Tibetan Plateau, Ministry of Education, School of Ecology and Environment, Tibet University, Lhasa, China
| | - Ye-Bing Yin
- Key Laboratory of Biodiversity and Environment on the Qinghai-Tibetan Plateau, Ministry of Education, School of Ecology and Environment, Tibet University, Lhasa, China
| | - Si-Cen Luo
- Key Laboratory of Biodiversity and Environment on the Qinghai-Tibetan Plateau, Ministry of Education, School of Ecology and Environment, Tibet University, Lhasa, China
| | - Dong-Xu Wang
- Key Laboratory of Biodiversity and Environment on the Qinghai-Tibetan Plateau, Ministry of Education, School of Ecology and Environment, Tibet University, Lhasa, China
| | - Heng Zheng
- School of Resource and Environmental Engineering, Wuhan University of Technology, Wuhan, China.
| | - Yi-Xuan Liu
- Key Laboratory of Biodiversity and Environment on the Qinghai-Tibetan Plateau, Ministry of Education, School of Ecology and Environment, Tibet University, Lhasa, China.
| |
Collapse
|
2
|
Hu JY, Li L, Peng G, Li YQ, Xu LH, Guan HL, Zhao LX, Miao CP. Nocardia panacis sp. nov., a novel actinomycete with antiphytopathogen activity isolated from the rhizosphere of Panax notoginseng. Antonie van Leeuwenhoek 2019; 113:165-174. [PMID: 31552514 DOI: 10.1007/s10482-019-01326-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 09/02/2019] [Indexed: 10/26/2022]
Abstract
Strain YIM PH21724T was isolated from the rhizosphere of Panax notoginseng. Phylogenetic analyses based on 16S rRNA gene sequences showed that the strain exhibits close phylogenetic relatedness to Nocardia kroppenstedtii N1286T (97.70%), Nocardia farcinica NCTC 11134T (97.67%) and Nocardia puris DSM 44599T (97.40%). The menaquinones were identified as MK-9 (H4), MK-8 (H4, ω-cyclo) and MK-8 (H4), and the major fatty acids (> 10%) were identified as C16:0, C18:1 ω9c and C18:0 10-methyl. The polar lipids were found to be composed of diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylinositol, phosphatidylinositol mannosides and an unidentified lipid. The G + C content of the genomic DNA was determined to be 67.01 mol%. The phenotypic, chemotaxonomic, phylogenetic and genomic results clearly show strain YIM PH21724T should be classified in the genus Nocardia and represents a novel species, for which the name Nocardia panacis sp. nov. is proposed. The type strain is YIM PH21724T (= DSM 105904T = KCTC 49030T = CCTCC AA 2017043T).
Collapse
Affiliation(s)
- Jia-Yun Hu
- Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming, 650091, People's Republic of China
| | - Lei Li
- Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming, 650091, People's Republic of China
| | - Guang Peng
- Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming, 650091, People's Republic of China
| | - Yi-Qing Li
- Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming, 650091, People's Republic of China
| | - Li-Hua Xu
- Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming, 650091, People's Republic of China
| | - Hui-Lin Guan
- Yunnan Provincial Renewable Energy Engineering Key Lab, Yunnan Normal University, Kunming, 650500, People's Republic of China
| | - Li-Xing Zhao
- Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming, 650091, People's Republic of China. .,Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, People's Republic of China.
| | - Cui-Ping Miao
- Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming, 650091, People's Republic of China.
| |
Collapse
|
3
|
Ding T, Yang LJ, Zhang WD, Shen YH. The secondary metabolites of rare actinomycetes: chemistry and bioactivity. RSC Adv 2019; 9:21964-21988. [PMID: 35518871 PMCID: PMC9067109 DOI: 10.1039/c9ra03579f] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 07/01/2019] [Indexed: 01/06/2023] Open
Abstract
Actinomycetes are outstanding and fascinating sources of potent bioactive compounds, particularly antibiotics. In recent years, rare actinomycetes have had an increasingly important position in the discovery of antibacterial compounds, especially Micromonospora, Actinomadura and Amycolatopsis. Focusing on the period from 2008 to 2018, we herein summarize the structures and bioactivities of secondary metabolites from rare actinomycetes, involving 21 genera.
Collapse
Affiliation(s)
- Ting Ding
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry Shanghai 201203 China
| | - Luo-Jie Yang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine Shanghai 201203 China
| | - Wei-Dong Zhang
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry Shanghai 201203 China
- School of Pharmacy, The Second Military Medical University Shanghai 200433 China
| | - Yun-Heng Shen
- School of Pharmacy, The Second Military Medical University Shanghai 200433 China
| |
Collapse
|
4
|
Leláková V, Šmejkal K, Jakubczyk K, Veselý O, Landa P, Václavík J, Bobáľ P, Pížová H, Temml V, Steinacher T, Schuster D, Granica S, Hanáková Z, Hošek J. Parallel in vitro and in silico investigations into anti-inflammatory effects of non-prenylated stilbenoids. Food Chem 2019; 285:431-440. [PMID: 30797367 DOI: 10.1016/j.foodchem.2019.01.128] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 12/07/2018] [Accepted: 01/25/2019] [Indexed: 12/25/2022]
Abstract
Stilbenoids represent a large group of bioactive compounds, which occur in food and medicinal plants. Twenty-five stilbenoids were screened in vitro for their ability to inhibit COX-1, COX-2 and 5-LOX. Piceatannol and pinostilbene showed activity comparable to the zileuton and ibuprofen, respectively. The anti-inflammatory potential of stilbenoids was further evaluated using THP-1 human monocytic leukemia cell line. Tests of the cytotoxicity on the THP-1 and HCT116 cell lines showed very low toxic effects. The tested stilbenoids were evaluated for their ability to attenuate the LPS-stimulated activation of NF-κB/AP-1. Most of the tested substances reduced the activity of NF-κB/AP-1 and later attenuated the expression of TNF-α. The effects of selected stilbenoids were further investigated on inflammatory signaling pathways. Non-prenylated stilbenoids regulated attenuation of NF-ĸB/AP-1 activity upstream by inhibiting the phosphorylation of MAPKs. A docking study used to in silico analyze the tested compounds confirmed their interaction with NF-ĸB, COX-2 and 5-LOX.
Collapse
Affiliation(s)
- Veronika Leláková
- Department of Natural Drugs, University of Veterinary and Pharmaceutical Sciences Brno, Palackého třída 1946/1, 61242 Brno, Czech Republic; Department of Molecular Biology and Pharmaceutical Biotechnology, University of Veterinary and Pharmaceutical Sciences Brno, Palackého třída 1946/1, 61242 Brno, Czech Republic
| | - Karel Šmejkal
- Department of Natural Drugs, University of Veterinary and Pharmaceutical Sciences Brno, Palackého třída 1946/1, 61242 Brno, Czech Republic.
| | - Karolina Jakubczyk
- Laboratory of Plant Biotechnologies, Institute of Experimental Botany, Czech Academy of Sciences, Rozvojová 263, 16502 Prague, Czech Republic
| | - Ondřej Veselý
- Laboratory of Plant Biotechnologies, Institute of Experimental Botany, Czech Academy of Sciences, Rozvojová 263, 16502 Prague, Czech Republic; Department of Quality of Agricultural Products, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcka129, 165 21 Prague 6 - Suchdol, Czech Republic
| | - Přemysl Landa
- Laboratory of Plant Biotechnologies, Institute of Experimental Botany, Czech Academy of Sciences, Rozvojová 263, 16502 Prague, Czech Republic
| | - Jiří Václavík
- Department of Natural Drugs, University of Veterinary and Pharmaceutical Sciences Brno, Palackého třída 1946/1, 61242 Brno, Czech Republic
| | - Pavel Bobáľ
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackého třída 1946/1, 61242 Brno, Czech Republic
| | - Hana Pížová
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackého třída 1946/1, 61242 Brno, Czech Republic
| | - Veronika Temml
- Department of Pharmacy/Pharmacognosy and Center for Molecular Biosciences (CMBI), University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Theresa Steinacher
- Department of Pharmacy/Pharmaceutical Chemistry and Center for Molecular Biosciences (CMBI), University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Daniela Schuster
- Institute of Pharmacy, Department of Pharmaceutical and Medicinal Chemistry, Paracelsus Medical University Salzburg, Strubergasse 21, 5020 Salzburg, Austria
| | - Sebastian Granica
- Department of Pharmacognosy and Molecular Basis of Phytotherapy, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
| | - Zuzana Hanáková
- Department of Natural Drugs, University of Veterinary and Pharmaceutical Sciences Brno, Palackého třída 1946/1, 61242 Brno, Czech Republic
| | - Jan Hošek
- Department of Molecular Biology and Pharmaceutical Biotechnology, University of Veterinary and Pharmaceutical Sciences Brno, Palackého třída 1946/1, 61242 Brno, Czech Republic
| |
Collapse
|
5
|
Dhakal D, Rayamajhi V, Mishra R, Sohng JK. Bioactive molecules from Nocardia: diversity, bioactivities and biosynthesis. ACTA ACUST UNITED AC 2019; 46:385-407. [DOI: 10.1007/s10295-018-02120-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 12/19/2018] [Indexed: 02/06/2023]
Abstract
Abstract
Nocardia spp. are catalase positive, aerobic, and non-motile Gram-positive filamentous bacteria. Many Nocarida spp. have been reported as unusual causes of diverse clinical diseases in both humans and animals. Therefore, they have been studied for a long time, primarily focusing on strain characterization, taxonomic classification of new isolates, and host pathophysiology. Currently, there are emerging interests in isolating bioactive molecules from diverse actinobacteria including Nocardia spp. and studying their biosynthetic mechanisms. In addition, these species possess significant metabolic capacity, which has been utilized for generating diverse functionalized bioactive molecules by whole cell biotransformation. This review summarizes the structural diversity and biological activities of compounds biosynthesized or biotransformed by Nocardia spp. Furthermore, the recent advances on biosynthetic mechanisms and genetic engineering approaches for enhanced production or structural/functional modification are presented.
Collapse
Affiliation(s)
- Dipesh Dhakal
- 0000 0004 0533 4202 grid.412859.3 Department of Life Science and Biochemical Engineering SunMoon University 70 Sunmoon-ro 221, Tangjeong-myeon 31460 Asan-si Chungnam Republic of Korea
| | - Vijay Rayamajhi
- 0000 0004 0533 4202 grid.412859.3 Department of Life Science and Biochemical Engineering SunMoon University 70 Sunmoon-ro 221, Tangjeong-myeon 31460 Asan-si Chungnam Republic of Korea
| | - Ravindra Mishra
- 0000 0004 0533 4202 grid.412859.3 Department of Life Science and Biochemical Engineering SunMoon University 70 Sunmoon-ro 221, Tangjeong-myeon 31460 Asan-si Chungnam Republic of Korea
| | - Jae Kyung Sohng
- 0000 0004 0533 4202 grid.412859.3 Department of Life Science and Biochemical Engineering SunMoon University 70 Sunmoon-ro 221, Tangjeong-myeon 31460 Asan-si Chungnam Republic of Korea
- 0000 0004 0533 4202 grid.412859.3 Department of BT-Convergent Pharmaceutical Engineering SunMoon University 70 Sunmoon-ro 221, Tangjeong-myeon 31460 Asan-si Chungnam Republic of Korea
| |
Collapse
|
6
|
Zhang JC, Chen GY, Li XZ, Hu M, Wang BY, Ruan BH, Zhou H, Zhao LX, Zhou J, Ding ZT, Yang YB. Phytotoxic, antibacterial, and antioxidant activities of mycotoxins and other metabolites from Trichoderma sp. Nat Prod Res 2017; 31:2745-2752. [DOI: 10.1080/14786419.2017.1295235] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Ju-cheng Zhang
- School of Chemical Science and Technology, Yunnan University, Kunming, China
- College of Science, Honghe University, Mengzi, China
| | - Guang-Yi Chen
- School of Chemical Science and Technology, Yunnan University, Kunming, China
| | - Xiao-Zhan Li
- School of Chemical Science and Technology, Yunnan University, Kunming, China
| | - Ming Hu
- School of Chemical Science and Technology, Yunnan University, Kunming, China
| | - Bang-Yan Wang
- School of Chemical Science and Technology, Yunnan University, Kunming, China
| | - Bao-Hui Ruan
- School of Chemical Science and Technology, Yunnan University, Kunming, China
| | - Hao Zhou
- School of Chemical Science and Technology, Yunnan University, Kunming, China
| | - Li-Xing Zhao
- Yunnan Institute of Microbiology, Yunnan University, Kunming, China
| | - Jun Zhou
- School of Chemical Science and Technology, Yunnan University, Kunming, China
| | - Zhong-Tao Ding
- School of Chemical Science and Technology, Yunnan University, Kunming, China
| | - Ya-Bin Yang
- School of Chemical Science and Technology, Yunnan University, Kunming, China
| |
Collapse
|
7
|
Li XZ, Ruan BH, Yang YB, Yang XQ, Chen GY, Hu M, Wang BY, Zhou H, Ding ZT. Metabolites from Penicillium sp. Associated with Paris polyphylla. Nat Prod Commun 2017. [DOI: 10.1177/1934578x1701200124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
One new gentisyl alcohol derivative and seven known compounds were isolated from the culture of Penicillium sp. Their chemical structures were elucidated by extensive spectroscopic analysis. Compounds 1, 4, and 6 inhibited Bacillus subtilis, Staphylococcus aureus, and Escherichia coli with MICs of 32–128 μg/mL.
Collapse
Affiliation(s)
- Xiao-Zhan Li
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China
| | - Bao-Hui Ruan
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China
| | - Ya-Bin Yang
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China
| | - Xue-Qiong Yang
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China
| | - Guang-Yi Chen
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China
| | - Ming Hu
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China
| | - Bang-Yan Wang
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China
| | - Hao Zhou
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China
| | - Zhong-Tao Ding
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China
| |
Collapse
|
8
|
Bogner CW, Kamdem RST, Sichtermann G, Matthäus C, Hölscher D, Popp J, Proksch P, Grundler FMW, Schouten A. Bioactive secondary metabolites with multiple activities from a fungal endophyte. Microb Biotechnol 2016; 10:175-188. [PMID: 27990770 PMCID: PMC5270730 DOI: 10.1111/1751-7915.12467] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 10/31/2016] [Accepted: 11/03/2016] [Indexed: 01/20/2023] Open
Abstract
In order to replace particularly biohazardous nematocides, there is a strong drive to finding natural product‐based alternatives with the aim of containing nematode pests in agriculture. The metabolites produced by the fungal endophyte Fusarium oxysporum 162 when cultivated on rice media were isolated and their structures elucidated. Eleven compounds were obtained, of which six were isolated from a Fusarium spp. for the first time. The three most potent nematode‐antagonistic compounds, 4‐hydroxybenzoic acid, indole‐3‐acetic acid (IAA) and gibepyrone D had LC50 values of 104, 117 and 134 μg ml−1, respectively, after 72 h. IAA is a well‐known phytohormone that plays a role in triggering plant resistance, thus suggesting a dual activity, either directly, by killing or compromising nematodes, or indirectly, by inducing defence mechanisms against pathogens (nematodes) in plants. Such compounds may serve as important leads in the development of novel, environmental friendly, nematocides.
Collapse
Affiliation(s)
- Catherine W Bogner
- Institute of Crop Science and Resource Conservation (INRES), Department of Molecular Phytomedicine, University of Bonn, Karlrobert-Kreiten Str. 13, 53115, Bonn, Germany
| | - Ramsay S T Kamdem
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-University Düsseldorf, Universitäts Str. 1. Building. 26.23, 40225, Düsseldorf, Germany
| | - Gisela Sichtermann
- Institute of Crop Science and Resource Conservation (INRES), Department of Molecular Phytomedicine, University of Bonn, Karlrobert-Kreiten Str. 13, 53115, Bonn, Germany
| | - Christian Matthäus
- Institute of Photonic Technology, Workgroup Spectroscopy/Imaging, Albert-Einstein-Str. 9, 07745, Jena, Germany.,Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University, Helmholtzweg 4, 07743, Jena, Germany
| | - Dirk Hölscher
- Research Group Biosynthesis/NMR, Max Planck Institute for Chemical Ecology, Hans-Knöll-Str. 8, 07745, Jena, Germany
| | - Jürgen Popp
- Institute of Photonic Technology, Workgroup Spectroscopy/Imaging, Albert-Einstein-Str. 9, 07745, Jena, Germany.,Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University, Helmholtzweg 4, 07743, Jena, Germany
| | - Peter Proksch
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-University Düsseldorf, Universitäts Str. 1. Building. 26.23, 40225, Düsseldorf, Germany
| | - Florian M W Grundler
- Institute of Crop Science and Resource Conservation (INRES), Department of Molecular Phytomedicine, University of Bonn, Karlrobert-Kreiten Str. 13, 53115, Bonn, Germany
| | - Alexander Schouten
- Institute of Crop Science and Resource Conservation (INRES), Department of Molecular Phytomedicine, University of Bonn, Karlrobert-Kreiten Str. 13, 53115, Bonn, Germany
| |
Collapse
|
9
|
Xie CL, Niu SW, Zhou TT, Zhang GY, Yang Q, Yang XW. Chemical constituents and chemotaxonomic study on the marine actinomycete Williamsia sp. MCCC 1A11233. BIOCHEM SYST ECOL 2016. [DOI: 10.1016/j.bse.2016.06.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
10
|
Tanvir R, Sajid I, Hasnain S, Kulik A, Grond S. Rare actinomycetes Nocardia caishijiensis and Pseudonocardia carboxydivorans as endophytes, their bioactivity and metabolites evaluation. Microbiol Res 2016; 185:22-35. [PMID: 26946375 DOI: 10.1016/j.micres.2016.01.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 11/23/2015] [Accepted: 01/20/2016] [Indexed: 11/15/2022]
Abstract
Two strains identified as Nocardia caishijiensis (SORS 64b) and Pseudonocardia carboxydivorans (AGLS 2) were isolated as endophytes from Sonchus oleraceus and Ageratum conyzoides respectively. The analysis of their extracts revealed them to be strongly bioactive. The N. caishijiensis extract gave an LC50 of 570 μg/ml(-1) in the brine shrimp cytotoxicity assay and an EC50 of 0.552 μg/ml(-1) in the DPPH antioxidant assay. Antimicrobial activity was observed against Methicillin resistant Staphlococcus aureus (MRSA) and Escherichia coli ATCC 25922 (14 mm), Klebsiella pneumoniae ATCC 706003 (13 mm), S. aureus ATCC 25923 (11 mm) and Candida tropicalis (20 mm). For the extract of P. carboxydivorans the EC50 was 0.670 μg/ml(-1) and it was observed to be more bioactive against Bacillus subtilis DSM 10 ATCC 6051 (21 mm), C. tropicalis (20 mm), S. aureus ATCC 25923 (17 mm), MRSA (17 mm), E. coli K12 (W1130) (16 mm) and Chlorella vulgaris (10 mm). The genotoxicity testing revealed a 20 mm zone of inhibition against the polA mutant strain E. coli K-12 AB 3027 suggesting damage to the DNA and polA genes. The TLC and bioautography screening revealed a diversity of active bands of medium polar and nonpolar compounds. Metabolite analysis by HPLC-DAD via UV/vis spectral screening suggested the possibility of stenothricin and bagremycin A in the mycelium extract of N. caishijiensis respectively. In the broth and mycelium extract of P. carboxydivorans borrelidin was suggested along with α-pyrone. The HPLC-MS revealed bioactive long chained amide derivatives such as 7-Octadecenamide, 9, 12 octadecandienamide. This study reports the rare actinomycetes N. caishijiensis and P. carboxydivorans as endophytes and evaluates their bioactive metabolites.
Collapse
Affiliation(s)
- Rabia Tanvir
- Department of Microbiology and Molecular Genetics, University of the Punjab, Quaid-e-Azam Campus, 54590, Lahore, Punjab, Pakistan; Institut fur Organische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18A, 72076, Tübingen, Germany.
| | - Imran Sajid
- Department of Microbiology and Molecular Genetics, University of the Punjab, Quaid-e-Azam Campus, 54590, Lahore, Punjab, Pakistan
| | - Shahida Hasnain
- Department of Microbiology and Molecular Genetics, University of the Punjab, Quaid-e-Azam Campus, 54590, Lahore, Punjab, Pakistan; Department of Microbiology and Molecular Genetics, The Women University, Multan, Punjab, Pakistan
| | - Andreas Kulik
- Mikrobiologie/Biotechnologie, Interfakultäres Institut für Mikrobiologie und Infektionsmedizin, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 28, 72076, Tübingen, Germany
| | - Stephanie Grond
- Institut fur Organische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18A, 72076, Tübingen, Germany
| |
Collapse
|