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Purnama PC, Hernandez LC, Verpoorte R. Do Fungicides Affect Alkaloid Production in Catharanthus roseus (L.) G. Don. Seedlings? Molecules 2023; 28:molecules28031405. [PMID: 36771067 PMCID: PMC9920713 DOI: 10.3390/molecules28031405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 12/14/2022] [Accepted: 12/15/2022] [Indexed: 02/05/2023] Open
Abstract
The presence of endophytes in plants is undeniable, but how significant their involvement is in the host plant biosynthetic pathways is still unclear. The results reported from fungicide treatments in plants varied. Fungicide treatment in Taxus was found to decrease the taxol content. In Ipomoea asarifolia, Pronto Plus and Folicur treatments coincided with the disappearance of ergot alkaloids from the plant. In Narcissus pseudonarcissus cv. Carlton, a mixture of fungicide applications decreased the alkaloids concentration and altered the carbohydrate metabolism. Jacobaea plants treated with Folicur reduced the pyrrolizidine alkaloids content. There have not been any studies into the involvement of endophytic fungi on alkaloids production of Catharanthus roseus until now. Though there is a report on the isolation of the endophytic fungi, Fusarium oxysporum from C. roseus, which was reported to produce vinblastine and vincristine in vitro. To detect possible collaborations between these two different organisms, fungicides were applied to suppress the endophytic fungi in seedlings and then measure the metabolomes by 1HNMR and HPLC analysis. The results indicate that endophytic fungi were not directly involved in alkaloids biosynthesis. Treatment with fungicides influenced both the primary and secondary metabolism of C. roseus. The systemic fungicides Pronto Plus and Folicur caused an increase in loganin and secologanin levels. In contrast, control samples had higher level of catharanthine and vindoline. This means that fungicide treatments cause changes in plant secondary metabolism.
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Affiliation(s)
- Purin Candra Purnama
- Department of Biology, Faculty of Mathematics and Natural Science, Universitas Sebelas Maret, Jl. Ir. Sutami 36A, Surakarta 57126, Indonesia
- Natural Product Laboratory, Institute of Biology, Leiden University, Sylviusweg 72, 2333 AG Leiden, The Netherlands
- Correspondence:
| | - Leonardo Castellanos Hernandez
- Marine Natural Products Group, Department of Chemistry, Universidad Nacional De Colombia, Carrera 45 # 26-85 Edif. Uriel Gutiérrez, Bogota 110110, Colombia
| | - Robert Verpoorte
- Natural Product Laboratory, Institute of Biology, Leiden University, Sylviusweg 72, 2333 AG Leiden, The Netherlands
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Duan S, Declerck S, Zhang L, Feng G. Two-component system in Rahnella aquatilis is impacted by the hyphosphere of the arbuscular mycorrhizal fungus Rhizophagus irregularis. ENVIRONMENTAL MICROBIOLOGY REPORTS 2022; 14:119-129. [PMID: 34951128 DOI: 10.1111/1758-2229.13039] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
Two-component systems (TCS) are ubiquitous among bacteria, playing key roles in signalling events. However, to what extent the TCS of Rahnella aquatilis (a Phosphate solubilizing bacteria) is influenced by the hyphosphere of the arbuscular mycorrhizal (AM) fungus Rhizophagus irregularis is totally unknown. Here, the expression of 16 genes encoding the TCS of R. aquatilis (i.e. involved in carbon-sensing and nutrient-sensing) and of eight genes regulated by the PhoR TCS (i.e. involved in inorganic and organic phosphorus mobilization) were analysed at regular intervals in presence of hyphae of R. irregularis. The study was conducted under in vitro culture conditions with phytate as the unique source of phosphorus. In presence of the AM fungus, the expression of TCS genes involved in carbon-sensing and nutrient-sensing were stimulated. Only, BaeS at 30 and 120 min, and BaeR at 60 min were inhibited. In addition, the PhoR TCS stimulated the expression of genes encoding phosphatase but inhibited the expression of genes involved in gluconic acid production. As the mechanism of coupling environmental changes with cellular physiological changes, TCS plays a pivotal role in regulating specific gene expression in R. aquatilis, recognizing environmental signals. More importantly, TCS genes may regulate bacteria response to hyphal carbon to mobilize phosphorus efficiently in the hyphosphere.
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Affiliation(s)
- Shilong Duan
- College of Resources and Environmental Sciences, MOE Key Laboratory of Plant-Soil Interactions, National Academy of Agriculture Green Development, China Agricultural University, Beijing, 10093, China
| | - Stéphane Declerck
- Université Catholique de Louvain, Earth and Life Institute, Applied Microbiology, Mycology, Croix du Sud 2, bte L7.05.06, Louvain-la-Neuve, B-1348, Belgium
| | - Lin Zhang
- College of Resources and Environmental Sciences, MOE Key Laboratory of Plant-Soil Interactions, National Academy of Agriculture Green Development, China Agricultural University, Beijing, 10093, China
| | - Gu Feng
- College of Resources and Environmental Sciences, MOE Key Laboratory of Plant-Soil Interactions, National Academy of Agriculture Green Development, China Agricultural University, Beijing, 10093, China
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Salwan R, Kaur R, Sharma V. Genomic Organization of Streptomyces flavotricini NGL1 and Streptomyces erythrochromogenes HMS4 Reveals Differential Plant Beneficial Attributes and Laccase Production Capabilities. Mol Biotechnol 2021; 64:447-462. [PMID: 34782960 DOI: 10.1007/s12033-021-00424-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 11/02/2021] [Indexed: 11/24/2022]
Abstract
The genus Streptomyces has been explored in industrial sectors due to its endurance to environmental stresses, the production of a plethora of biomolecules, the biological remediation of soils, and alleviating plant stresses. The whole genome of NGL1 and HMS4 was sequenced due to the specific laccase activity against 2,6-dimethoxyphenol (2,6-DMP) and differential plant beneficial attributes. The deduced genome of 8.85 Mbp and 7.73 Mbp in size with a G+C content of 72.03% and 72.3% was obtained for NGL1 and HMS4, respectively. A total of 8438 and 7322 protein coding genes, 155 (130 tRNA, 25 rRNA) and 145 tRNA (121 tRNA, 24 rRNA) coding genes were predicted in NGL1 and HMS4, respectively. The comparative genomics of NGL1 and HMS4 showed 185 and 162 genes encoding for carbohydrate-active enzymes, respectively. The genomic ability of these strains to encode carbohydrate-active enzymes, laccase, and diversity of BGCs, along with plant beneficial attributes to suppress the plant pathogens can be used for several industrial and agricultural applications.
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Affiliation(s)
- Richa Salwan
- College of Horticulture and Forestry, Dr YS Parmar University of Horticulture & Forestry, Neri, Hamirpur, HP, 177 001, India.
| | - Randhir Kaur
- University Centre for Research and Development, Chandigarh University, Gharuan, Mohali, PB, 140 413, India
| | - Vivek Sharma
- University Centre for Research and Development, Chandigarh University, Gharuan, Mohali, PB, 140 413, India.
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Fungichromin production by Streptomyces sp. WP-1, an endophyte from Pinus dabeshanensis, and its antifungal activity against Fusarium oxysporum. Appl Microbiol Biotechnol 2020; 104:10437-10449. [PMID: 33170328 DOI: 10.1007/s00253-020-10996-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/20/2020] [Accepted: 10/31/2020] [Indexed: 10/23/2022]
Abstract
In this study, we isolated an endophytic Streptomyces sp. strain, WP-1, from surface-sterilized barks of Pinus dabeshanensis, an endangered Chinese plant. WP-1 showed strong antifungal activity against diverse pathogenic fungi, such as Fusarium oxysporum, Rhizoctonia solani, Phytophthora infestan, and Candida albicans. Based on phylogenetic analyses, preliminary identification suggested that the WP-1 strain belonged to the genus Streptomyces. Column chromatogram and HPLC were employed to isolate the primary antifungal component from the culture medium of WP-1, and it was identified as the methylpentaene macrolide antibiotic, fungichromin (FC). In this study, for the first time, using in vitro bioassay studies, we revealed that FC strongly inhibited mycelial growth and conidia germination in Fusarium oxysporum. The median inhibitory concentration of FC was found to be 3.80 mg/L. The fermentation conditions of the WP-1 strain were further investigated to improve FC production. We found that supplementation of the synthetic medium with oils (soybean oil, oleic acid, and so on), particularly during the initial stage of fermentation, significantly increased the FC yield. Ammonium-trapping agent (magnesium phosphate) was used as an additive to increase FC yield to 5741.7 mg/L. It was 2.9-fold more as compared to the highest FC yield reported so far where Streptomyces padanus PMS-702 was used for FC production. KEY POINTS: • Isolation and identification of a fungichromin-producing endophytic actinomycete WP-1 strain. • Fungichromin production was significantly improved via oils and ammonium-trapping agents addition. • Discovery of the antifungal activity of fungichromin against Fusarium oxysporum.
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Nguyen QD, Truong PM, Vo TNT, Chu TDX, Nguyen CH. Draft genome sequence data of Streptomyces sp. SS1-1, an endophytic strain showing cytotoxicity against the human lung cancer A549 cell line. Data Brief 2020; 30:105497. [PMID: 32300629 PMCID: PMC7153288 DOI: 10.1016/j.dib.2020.105497] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 03/14/2020] [Accepted: 03/20/2020] [Indexed: 11/30/2022] Open
Abstract
We report in this article the cytotoxicity of Streptomyces sp. SS1-1 against the human lung cancer A549 cell line, its draft genome sequence and a total of 20 predicted secondary metabolite biosynthetic gene clusters. Streptomyces sp. SS1-1 was an endophytic bacterial strain isolated from the plant Catharanthus roseus in Ho Chi Minh City, Vietnam. When cultured in the PY medium, this strain shows a cytotoxic effect on the A549 cell line. The draft genome of Streptomyces sp. SS1-1 has four contigs of total 7,815,656 bp and the GC content of this genome is 72.2%. AntiSMASH analysis reveals 20 putative biosynthetic gene clusters for the largest contig. The genome sequencing of Streptomyces sp. SS1-1 is essential for the molecular identification of gene cluster(s) responsible for secondary metabolite(s) with cytotoxic activity.
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Affiliation(s)
- Quan Dang Nguyen
- Biotechnology Center of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Phung Minh Truong
- Center for Research and Application in Bioscience, Ho Chi Minh City, Vietnam
| | | | | | - Chuong Hoang Nguyen
- University of Science, Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
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Salwan R, Sharma V, Sharma A, Singh A. Molecular imprints of plant beneficial Streptomyces sp. AC30 and AC40 reveal differential capabilities and strategies to counter environmental stresses. Microbiol Res 2020; 235:126449. [PMID: 32114361 DOI: 10.1016/j.micres.2020.126449] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 02/22/2020] [Accepted: 02/22/2020] [Indexed: 10/24/2022]
Abstract
Streptomyces and their biomolecules are well explored for antibiotics production, bioremediation and alleviating the plant stresses due to their plant beneficial attributes. Therefore, due to plethora of biological attributes, the accurate portraying of molecular capabilities of these microorganisms at genomic level is of paramount importance. Here, we have evaluated biochemical attributes of two Streptomyces sp. AC30and AC40 for different plant beneficial activities which are antagonistic to Fusarium oxysporum, Alternaria solani, Sclerotinia sclerotium and Phytopthora infestans. In parallel, the draft genomes of these strains were deduced to understand their genomic capabilities using Illumina platform. The complete genome of AC30and AC40 were 11,284,599 bp and 12,636,188 bp in size with total G + C content of 62.36 and 54.75 %, respectively. Overall, higher number of genes (14,024) was reported for AC40 as compared to AC30 (12,476). The comparative genome organization revealed sharing of a few biosynthetic clusters as well as some exclusive biosynthetic clusters among both the strains. Further, expansion in the chitinases and glucanases was found in the genome of AC40. In addition, genes for 3-phytase and glycosyl hydrolase family 19 were restricted to AC40 only. The comparative genome study revealed presence of plant induced nitrilase in AC40 which is predicted for its role in IAA biosynthesis, release of ammonia, biotransformation of nitrile compounds to corresponding acids and bioremediation of soil containing nitrile compounds. For IAA and secondary metabolites biosynthesis, flavin-dependent monooxygenase, a rate limiting factor in Trp-dependent auxin biosynthesis pathway was found exclusive to AC30 genome. The comparative study revealed the diversification of few pathways/strategies to suppress plant pathogens and promote plant growth by Streptomyces strains.
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Affiliation(s)
- Richa Salwan
- College of Horticulture and Forestry, (Dr YS Parmar University of Horticulture and Forestry), Neri, Hamirpur, 177 001, HP, India.
| | - Vivek Sharma
- University Centre for Research and Development, Chandigarh University, 140413, India.
| | - Anu Sharma
- University Centre for Research and Development, Chandigarh University, 140413, India
| | - Ankita Singh
- Bionivid Technology Private Limited Kasturi Nagar, Bangalore-560043, India
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Yan DH, Song X, Li H, Luo T, Dou G, Strobel G. Antifungal Activities of Volatile Secondary Metabolites of Four Diaporthe Strains Isolated from Catharanthus roseus. J Fungi (Basel) 2018; 4:E65. [PMID: 29848985 PMCID: PMC6023506 DOI: 10.3390/jof4020065] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 05/25/2018] [Accepted: 05/29/2018] [Indexed: 12/16/2022] Open
Abstract
Four endophytic fungi were isolated from the medicinal plant, Catharanthus roseus, and were identified as Diaporthe spp. with partial translation elongation factor 1-alpha (TEF1), beta-tubulin (TUB), histone H3 (HIS), calmodulin (CAL) genes, and rDNA internal transcribed spacer (ITS) region (TEF1-TUB-HIS--CAL-ITS) multigene phylogeny suggested for species delimitation in the Diaporthe genus. Each fungus produces a unique mixture of volatile organic compounds (VOCs) with an abundant mixture of terpenoids analyzed by headspace solid-phase microextraction (SPME) fiber-GC/MS. These tentatively-detected terpenes included α-muurolene, β-phellandrene, γ-terpinene, and α-thujene, as well as other minor terpenoids, including caryophyllene, patchoulene, cedrene, 2-carene, and thujone. The volatile metabolites of each isolate showed antifungal properties against a wide range of plant pathogenic test fungi and oomycetes, including Alternaria alternata, Botrytis cinerea, Colletotrichum gloeosporioides, Fusarium graminearum, and Phytophthora cinnamomi. The growth inhibition of the pathogens varied between 10% and 60% within 72 h of exposure. To our knowledge, the endophytic Diaporthe-like strains are first reported from Catharanthus roseus. VOCs produced by each strain of the endophytic Diaporthe fungi were unique components with dominant monoterpenes comparing to known Diaporthe fungal VOCs. A discussion is presented on the inhibitive bioactivities of secondary metabolites among endophytic Diaporthe fungi and this medicinal plant.
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Affiliation(s)
- Dong-Hui Yan
- Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Hai Dian District, Beijing 100091, China.
| | - Xiaoyu Song
- Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Hai Dian District, Beijing 100091, China.
| | - Hongchang Li
- Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Hai Dian District, Beijing 100091, China.
| | - Tushou Luo
- Research Institute of Tropical Forestry, Chinese Academy of Forestry, Tianhe District, Guangzhou 510520, China.
| | - Guiming Dou
- Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Hai Dian District, Beijing 100091, China.
| | - Gary Strobel
- Department of Plant Sciences, Montana State University, Bozeman, MT 59717, USA.
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Viaene T, Langendries S, Beirinckx S, Maes M, Goormachtig S. Streptomycesas a plant's best friend? FEMS Microbiol Ecol 2016; 92:fiw119. [DOI: 10.1093/femsec/fiw119] [Citation(s) in RCA: 149] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/29/2016] [Indexed: 11/14/2022] Open
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