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Sun R, Hong B, Reichelt M, Luck K, Mai DT, Jiang X, Gershenzon J, Vassão DG. Metabolism of plant-derived toxins from its insect host increases the success of the entomopathogenic fungus Beauveria bassiana. THE ISME JOURNAL 2023; 17:1693-1704. [PMID: 37479887 PMCID: PMC10504261 DOI: 10.1038/s41396-023-01480-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 07/07/2023] [Accepted: 07/13/2023] [Indexed: 07/23/2023]
Abstract
Beauveria bassiana is a soil fungus that parasitizes a large number of arthropod species, including numerous crop pests, causing white muscardine disease and is therefore used as a biological insecticide. However, some insects, such as the cabbage aphid (Brevicoryne brassicae), defend themselves chemically by sequestering dietary pro-toxins (glucosinolates) from their Brassicales host plants. Glucosinolates are accumulated by cabbage aphids and activated to form toxic isothiocyanates when under attack. While isothiocyanate formation protects aphids against most attackers, B. bassiana is still able to infect the cabbage aphid under natural conditions. We therefore investigated how this fungus is able to circumvent the chemical defense system of the cabbage aphid. Here, we describe how B. bassiana infection activates the cabbage aphid defense system, but the resulting toxins are metabolized by B. bassiana via the mercapturic acid pathway, of which the first step is catalyzed by glutathione-S-transferases of low substrate specificity. This detoxification pathway enhances B. bassiana growth when isothiocyanates are present in natural concentrations, and so appears to be an important factor in fungal parasitization of these chemically defended aphids.
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Affiliation(s)
- Ruo Sun
- Max Planck Institute for Chemical Ecology, Department of Biochemistry, Jena, Germany
| | - Benke Hong
- Max Planck Institute for Chemical Ecology, Department of Natural Product Biosynthesis, Jena, Germany
| | - Michael Reichelt
- Max Planck Institute for Chemical Ecology, Department of Biochemistry, Jena, Germany
| | - Katrin Luck
- Max Planck Institute for Chemical Ecology, Department of Biochemistry, Jena, Germany
- Max Planck Institute for Chemical Ecology, Department of Natural Product Biosynthesis, Jena, Germany
| | - Duc Tam Mai
- Max Planck Institute for Chemical Ecology, Department of Biochemistry, Jena, Germany
| | - Xingcong Jiang
- Max Planck Institute for Chemical Ecology, Department of Evolutionary Neuroethology, Jena, Germany
| | - Jonathan Gershenzon
- Max Planck Institute for Chemical Ecology, Department of Biochemistry, Jena, Germany
| | - Daniel Giddings Vassão
- Max Planck Institute for Chemical Ecology, Department of Biochemistry, Jena, Germany.
- Max Planck Institute of Geoanthropology, Department of Archaeology, Jena, Germany.
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Wangsanut T, Sukantamala P, Pongpom M. Identification of glutathione metabolic genes from a dimorphic fungus Talaromyces marneffei and their gene expression patterns under different environmental conditions. Sci Rep 2023; 13:13888. [PMID: 37620377 PMCID: PMC10449922 DOI: 10.1038/s41598-023-40932-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 08/18/2023] [Indexed: 08/26/2023] Open
Abstract
Talaromyces marneffei is a human fungal pathogen that causes endemic opportunistic infections, especially in Southeast Asia. The key virulence factors of T. marneffei are the ability to survive host-derived heat and oxidative stress, and the ability to convert morphology from environmental mold to fission yeast forms during infection. Glutathione metabolism plays an essential role in stress response and cellular development in multiple organisms. However, the role of the glutathione system in T. marneffei is elusive. Here, we identified the genes encoding principal enzymes associated with glutathione metabolism in T. marneffei, including glutathione biosynthetic enzymes (Gcs1 and Gcs2), glutathione peroxidase (Gpx1), glutathione reductase (Glr1), and a family of glutathione S-transferase (Gst). Sequence homology search revealed an extended family of the TmGst proteins, consisting of 20 TmGsts that could be divided into several classes. Expression analysis revealed that cells in conidia, mold, and yeast phases exhibited distinct expression profiles of glutathione-related genes. Also, TmGst genes were highly upregulated in response to hydrogen peroxide and xenobiotic exposure. Altogether, our findings suggest that T. marneffei transcriptionally regulates the glutathione genes under stress conditions in a cell-type-specific manner. This study could aid in understanding the role of glutathione in thermal-induced dimorphism and stress response.
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Affiliation(s)
- Tanaporn Wangsanut
- Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Panwarit Sukantamala
- Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Monsicha Pongpom
- Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
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Kurt-Kızıldoğan A, Otur Ç, Yıldırım K, Kavas M, Abanoz-Seçgin B. In-depth comparative transcriptome analysis of Purpureocillium sp. CB1 under cadmium stress. Appl Microbiol Biotechnol 2023:10.1007/s00253-023-12655-5. [PMID: 37436480 DOI: 10.1007/s00253-023-12655-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 06/13/2023] [Accepted: 06/19/2023] [Indexed: 07/13/2023]
Abstract
Fungal bioremediation is a very attractive tool to cope with environmental pollution. We aimed to decipher the cadmium (Cd) response of Purpureocillium sp. CB1, isolated from polluted soil, at transcriptome level by RNA-sequencing (RNA-seq). We used 500 and 2500 mg/L of Cd2+ concentrations at two time points (t6;36). RNA-seq determined 620 genes that were co-expressed in all samples. The highest number of differentially expressed genes (DEGs) was obtained within the first six h of exposure to 2500 mg/L of Cd2+. Several genes encoding transcriptional regulators, transporters, heat shock proteins, and oxidative stress-related genes were differentially expressed under Cd2+ stress. Remarkably, the genes that encode salicylate hydroxylase, which is involved in naphthalene biodegradation pathway, were significantly overexpressed. Utilization of diesel as the sole carbon source by CB1 even in the presence of Cd2+ supported concomitant upregulation of hydrocarbon degradation pathway genes. Furthermore, leucinostatin-related gene expression levels increased under Cd2+ stress. In addition, leucinostatin extracts from Cd2+-treated CB1 cultures showed higher antifungal activity than the control. Notably, Cd2+ in CB1 was mainly found as bound to the cell wall, thus confirming its adsorption potential. Cd2+ stress slightly reduced growth and led to mycelial malformation due to Cd2+ adsorption, especially at a concentration of 2500 mg/L at t36. A strong correlation was recorded between RNA-seq and reverse-transcriptase-quantitative polymerase chain reaction (RT-qPCR) data. In conclusion, the study represents the first transcriptome analysis of Purpureocillium sp. under Cd2+ stress, providing insights into the primary targets for rational engineering to construct strains with remarkable bioremediation potency. KEY POINTS: • Upregulation of genes encoding salicylate hydroxylases under Cd2+ stress • Maximum Cd2+ adsorption at 500 mg/L at t36 as tightly bound to the cell wall • Concordant bioremediation potential of CB1 on Cd2+ and diesel.
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Affiliation(s)
- Aslıhan Kurt-Kızıldoğan
- Department of Agricultural Biotechnology, Faculty of Agriculture, Ondokuz Mayıs University, 55139, Samsun, Turkey.
| | - Çiğdem Otur
- Department of Agricultural Biotechnology, Faculty of Agriculture, Ondokuz Mayıs University, 55139, Samsun, Turkey
| | - Kubilay Yıldırım
- Department of Molecular Biology and Genetics, Ondokuz Mayıs University, 55139, Samsun, Turkey
| | - Musa Kavas
- Department of Agricultural Biotechnology, Faculty of Agriculture, Ondokuz Mayıs University, 55139, Samsun, Turkey
| | - Büşra Abanoz-Seçgin
- Department of Agricultural Biotechnology, Faculty of Agriculture, Ondokuz Mayıs University, 55139, Samsun, Turkey
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Noureen S, Hussain T, Noureen A, Altyar AE. Effect of Lactobacillus brevis (MG000874) on antioxidant-related gene expression of the liver and kidney in D-galactose-induced oxidative stress mice model. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-28203-7. [PMID: 37355509 DOI: 10.1007/s11356-023-28203-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 06/07/2023] [Indexed: 06/26/2023]
Abstract
Oxidative stress (OS) is a phenomenon induced by excessive production and accumulation of reactive oxygen species (ROS) in living cells. These increased ROS productions connected, coupled with many neurological and physiological diseases. Several antioxidants were utilized recently to combat OS, and lactic acid bacteria have a potent radical-scavenging activity to minimize OS. The present work was designed to find out the protective effects of Lactobacillus brevis MG000874 (L. brevis MG000874) against oxidative injuries induced by D-galactose (D-gal) in vivo and to explore the gene expression of OS-related gene mice. Sixty male mice were randomly split into six groups. The first four groups were different control groups as no treatment (N), positive (G), probiotic (B), and ascorbic acid (A); the remaining two groups were treatment groups such as probiotic treatment (BG) and ascorbic acid treatment (AG). L. brevis MG000874 (0.2 ml of 1010 CFU/ml) and ascorbic acid (0.2 ml of 25 mg/ml) were administered orally daily for 5 weeks. It was revealed that these significantly affect the weight of treated mice: 40.22 ± 1.5 and 33.0 ± 0.57 g on days 0 and 36, respectively. D-gal induction in mice declined the levels of SOD and CAT determined by spectrophotometer. Administration of L. brevis MG000874 improved the antioxidant status of the stress mice and recovered the antioxidant activities of SOD and CAT enzymes. In addition, L. brevis MG000874-altered gene expression of OS marker at the messenger RNA (mRNA) levels was determined by RT-PCR in the mouse model. L. brevis MG000874 significantly improved the GST, GPX, SOD, CAT, and ß-actin levels in the kidney and the liver of the D-gal-induced mice (p < 0.05). Moreover, the histological investigation indicated that L. brevis MG000874 mitigated damage to the kidney and liver effectively in mice induced by D-gal. Therefore, it could be concluded from the current results that L. brevis MG000874 may act as a powerful antioxidant agent, and this study can provide the baseline data for drug development against OS-linked diseases.
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Affiliation(s)
- Saleha Noureen
- Department of Biology, Virtual University of Pakistan, Lahore, 54590, Pakistan.
| | - Tanveer Hussain
- Department of Biology, Virtual University of Pakistan, Lahore, 54590, Pakistan
| | - Aasma Noureen
- Department of Biology, Virtual University of Pakistan, Lahore, 54590, Pakistan
- Department of Zoology, Government College for Women University, Faisalabad, 38000, Pakistan
| | - Ahmed E Altyar
- Pharmacy Practice, Faculty of Pharmacy, King Abdulaziz University, 80260, Jeddah, 21589, Saudi Arabia
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Wang H, Liu J, Huang J, Xiao Q, Hayward A, Li F, Gong Y, Liu Q, Ma M, Fu D, Xiao M. Mapping and Identifying Candidate Genes Enabling Cadmium Accumulation in Brassica napus Revealed by Combined BSA-Seq and RNA-Seq Analysis. Int J Mol Sci 2023; 24:10163. [PMID: 37373312 DOI: 10.3390/ijms241210163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 06/09/2023] [Accepted: 06/10/2023] [Indexed: 06/29/2023] Open
Abstract
Rapeseed has the ability to absorb cadmium in the roots and transfer it to aboveground organs, making it a potential species for remediating soil cadmium (Cd) pollution. However, the genetic and molecular mechanisms underlying this phenomenon in rapeseed are still unclear. In this study, a 'cadmium-enriched' parent, 'P1', with high cadmium transport and accumulation in the shoot (cadmium root: shoot transfer ratio of 153.75%), and a low-cadmium-accumulation parent, 'P2', (with a cadmium transfer ratio of 48.72%) were assessed for Cd concentration using inductively coupled plasma mass spectrometry (ICP-MS). An F2 genetic population was constructed by crossing 'P1' with 'P2' to map QTL intervals and underlying genes associated with cadmium enrichment. Fifty extremely cadmium-enriched F2 individuals and fifty extremely low-accumulation F2 individuals were selected based on cadmium content and cadmium transfer ratio and used for bulk segregant analysis (BSA) in combination with whole genome resequencing. This generated a total of 3,660,999 SNPs and 787,034 InDels between these two segregated phenotypic groups. Based on the delta SNP index (the difference in SNP frequency between the two bulked pools), nine candidate Quantitative trait loci (QTLs) from five chromosomes were identified, and four intervals were validated. RNA sequencing of 'P1' and 'P2' in response to cadmium was also performed and identified 3502 differentially expressed genes (DEGs) between 'P1' and 'P2' under Cd treatment. Finally, 32 candidate DEGs were identified within 9 significant mapping intervals, including genes encoding a glutathione S-transferase (GST), a molecular chaperone (DnaJ), and a phosphoglycerate kinase (PGK), among others. These genes are strong candidates for playing an active role in helping rapeseed cope with cadmium stress. Therefore, this study not only sheds new light on the molecular mechanisms of Cd accumulation in rapeseed but could also be useful for rapeseed breeding programs targeting this trait.
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Affiliation(s)
- Huadong Wang
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Agronomy College, Jiangxi Agricultural University, Nanchang 330045, China
| | - Jiajia Liu
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Agronomy College, Jiangxi Agricultural University, Nanchang 330045, China
| | - Juan Huang
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Agronomy College, Jiangxi Agricultural University, Nanchang 330045, China
| | - Qing Xiao
- Graduate School of Jiangxi Normal University, Jiangxi Normal University, Nanchang 330045, China
| | - Alice Hayward
- Centre for Horticultural Science, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane 4072, Australia
| | - Fuyan Li
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Agronomy College, Jiangxi Agricultural University, Nanchang 330045, China
| | - Yingying Gong
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Agronomy College, Jiangxi Agricultural University, Nanchang 330045, China
| | - Qian Liu
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Agronomy College, Jiangxi Agricultural University, Nanchang 330045, China
| | - Miao Ma
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Agronomy College, Jiangxi Agricultural University, Nanchang 330045, China
| | - Donghui Fu
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Agronomy College, Jiangxi Agricultural University, Nanchang 330045, China
| | - Meili Xiao
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Agronomy College, Jiangxi Agricultural University, Nanchang 330045, China
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Senabio JA, de Campos Pereira F, Pietro-Souza W, Sousa TF, Silva GF, Soares MA. Enhanced mercury phytoremediation by Pseudomonodictys pantanalensis sp. nov. A73 and Westerdykella aquatica P71. Braz J Microbiol 2023; 54:949-964. [PMID: 36857007 PMCID: PMC10235320 DOI: 10.1007/s42770-023-00924-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 02/07/2023] [Indexed: 03/02/2023] Open
Abstract
Mercury is a non-essential and toxic metal that induces toxicity in most organisms, but endophytic fungi can develop survival strategies to tolerate and respond to metal contaminants and other environmental stressors. The present study demonstrated the potential of mercury-resistant endophytic fungi in phytoremediation. We examined the functional traits involved in plant growth promotion, phytotoxicity mitigation, and mercury phytoremediation in seven fungi strains. The endophytic isolates synthesized the phytohormone indole-3-acetic acid, secreted siderophores, and solubilized phosphate in vitro. Inoculation of maize (Zea mays) plants with endophytes increased plant growth attributes by up to 76.25%. The endophytic fungi stimulated mercury uptake from the substrate and promoted its accumulation in plant tissues (t test, p < 0.05), preferentially in the roots, which thereby mitigated the impacts of metal phytotoxicity. Westerdykella aquatica P71 and the newly identified species Pseudomonodictys pantanalensis nov. A73 were the isolates that presented the best phytoremediation potential. Assembling and annotation of P. pantanalensis A73 and W. aquatica P71 genomes resulted in genome sizes of 45.7 and 31.8 Mb that encoded 17,774 and 11,240 protein-coding genes, respectively. Some clusters of genes detected were involved in the synthesis of secondary metabolites such as dimethylcoprogen (NRPS) and melanin (T1PKS), which are metal chelators with antioxidant activity; mercury resistance (merA and merR1); oxidative stress (PRX1 and TRX1); and plant growth promotion (trpS and iscU). Therefore, both fungi species are potential tools for the bioremediation of mercury-contaminated soils due to their ability to reduce phytotoxicity and assist phytoremediation.
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Affiliation(s)
- Jaqueline Alves Senabio
- Department of Botany and Ecology, Laboratory of Biotechnology and Microbial Ecology, Institute of Biosciences, Federal University of Mato Grosso, Cuiabá, Mato Grosso 78060-900 Brazil
| | | | - William Pietro-Souza
- Department of Botany and Ecology, Laboratory of Biotechnology and Microbial Ecology, Institute of Biosciences, Federal University of Mato Grosso, Cuiabá, Mato Grosso 78060-900 Brazil
| | | | | | - Marcos Antônio Soares
- Federal University of Mato Grosso UFMT, Av. Fernando Corrêa da Costa, no 2367 Distrito Boa Esperança, Cuiabá, Mato Grosso CEP 78060-900 Brazil
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Gong C, Xu D, Sun D, Kang J, Wang W, Xu JR, Zhang X. FgSnt1 of the Set3 HDAC complex plays a key role in mediating the regulation of histone acetylation by the cAMP-PKA pathway in Fusarium graminearum. PLoS Genet 2022; 18:e1010510. [PMID: 36477146 PMCID: PMC9728937 DOI: 10.1371/journal.pgen.1010510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 11/01/2022] [Indexed: 12/13/2022] Open
Abstract
The cAMP-PKA pathway is critical for regulating growth, differentiation, and pathogenesis in fungal pathogens. In Fusarium graminearum, mutants deleted of PKR regulatory-subunit of PKA had severe defects but often produced spontaneous suppressors. In this study eleven pkr suppressors were found to have mutations in FgSNT1, a component of the Set3C histone deacetylase (HDAC) complex, that result in the truncation of its C-terminal region. Targeted deletion of the C-terminal 98 aa (CT98) in FgSNT1 suppressed the defects of pkr in growth and H4 acetylation. CT98 truncation also increased the interaction of FgSnt1 with Hdf1, a major HDAC in the Set3 complex. The pkr mutant had no detectable expression of the Cpk1 catalytic subunit and PKA activities, which was not suppressed by mutations in FgSNT1. Cpk1 directly interacted with the N-terminal region of FgSnt1 and phosphorylated it at S443, a conserved PKA-phosphorylation site. CT98 of FgSnt1 carrying the S443D mutation interacted with its own N-terminal region. Expression of FgSNT1S443D rescued the defects of pkr in growth and H4 acetylation. Therefore, phosphorylation at S443 and suppressor mutations may relieve self-inhibitory binding of FgSnt1 and increase its interaction with Hdf1 and H4 acetylation, indicating a key role of FgSnt1 in crosstalk between cAMP signaling and Set3 complex.
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Affiliation(s)
- Chen Gong
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, China
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, Indiana, United States of America
| | - Daiying Xu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, China
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, Indiana, United States of America
| | - Daiyuan Sun
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Jiangang Kang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Wei Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, China
| | - Jin-Rong Xu
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, Indiana, United States of America
- * E-mail: (J-RX); (XZ)
| | - Xue Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, China
- * E-mail: (J-RX); (XZ)
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Dey P, Malik A, Singh DK, Haange SB, von Bergen M, Jehmlich N. Insight Into the Molecular Mechanisms Underpinning the Mycoremediation of Multiple Metals by Proteomic Technique. Front Microbiol 2022; 13:872576. [PMID: 35756008 PMCID: PMC9221998 DOI: 10.3389/fmicb.2022.872576] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 04/07/2022] [Indexed: 11/13/2022] Open
Abstract
We investigated the fungus Aspergillus fumigatus PD-18 responses when subjected to the multimetal combination (Total Cr, Cd2+, Cu2+, Ni2+, Pb2+, and Zn2+) in synthetic composite media. To understand how multimetal stress impacts fungal cells at the molecular level, the cellular response of A. fumigatus PD-18 to 30 mg/L multimetal stress (5 mg/L of each heavy metal) was determined by proteomics. The comparative fungal proteomics displayed the remarkable inherent intracellular and extracellular mechanism of metal resistance and tolerance potential of A. fumigatus PD-18. This study reported 2,238 proteins of which 434 proteins were exclusively expressed in multimetal extracts. The most predominant functional class expressed was for cellular processing and signaling. The type of proteins and the number of proteins that were upregulated due to various stress tolerance mechanisms were post-translational modification, protein turnover, and chaperones (42); translation, ribosomal structure, and biogenesis (60); and intracellular trafficking, secretion, and vesicular transport (18). In addition, free radical scavenging antioxidant proteins, such as superoxide dismutase, were upregulated upto 3.45-fold and transporter systems, such as protein transport (SEC31), upto 3.31-fold to combat the oxidative stress caused by the multiple metals. Also, protein–protein interaction network analysis revealed that cytochrome c oxidase and 60S ribosomal protein played key roles to detoxify the multimetal. To the best of our knowledge, this study of A. fumigatus PD-18 provides valuable insights toward the growing research in comprehending the metal microbe interactions in the presence of multimetal. This will facilitate in development of novel molecular markers for contaminant bioremediation.
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Affiliation(s)
- Priyadarshini Dey
- Applied Microbiology Lab, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, India
- Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research, Helmholtz Association of German Research Centres (HZ), Leipzig, Germany
- Department of Biotechnology, MS Ramaiah Institute of Technology, Bengaluru, India
| | - Anushree Malik
- Applied Microbiology Lab, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, India
| | - Dileep Kumar Singh
- Department of Zoology, Faculty of Science, University of Delhi, New Delhi, India
| | - Sven-Bastiaan Haange
- Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research, Helmholtz Association of German Research Centres (HZ), Leipzig, Germany
| | - Martin von Bergen
- Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research, Helmholtz Association of German Research Centres (HZ), Leipzig, Germany
- Institute of Biochemistry, Faculty of Biosciences, Pharmacy and Psychology, University of Leipzig, Leipzig, Germany
- German Centre for Integrative Biodiversity, Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
| | - Nico Jehmlich
- Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research, Helmholtz Association of German Research Centres (HZ), Leipzig, Germany
- *Correspondence: Nico Jehmlich,
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Parada R, Mendoza L, Cotoras M, Ortiz C. Endophytic fungi isolated from plants present on a mine tailing facility show a differential growth response to lead. Lett Appl Microbiol 2022; 75:345-354. [PMID: 35486037 DOI: 10.1111/lam.13730] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 04/08/2022] [Accepted: 04/25/2022] [Indexed: 11/27/2022]
Abstract
Plants growing in metal polluted sites can be a source of microorganisms suitable for bio-assisted phytoremediation strategies. In this work, three endophytic fungi from the roots of Poa stuckertii and Poa pratensis, two grasses that naturally colonize a Lead-Zinc tailing storage facility in Southern Chile, were isolated and identified. The leachate of the tailing sands showed a Pb content of 1.36 ± 0.71 ppm, and a pH of 7.3. By amplifying the ITS1/ITS4 region of fungal ribosomal DNA, the isolates were identified as Bjerkandera sp., Microdochium sp. and Sarocladium sp. When the growth media was supplemented with 50 ppm of Pb at pH 4.5, Microdochium sp. showed an 80% decrease in the biomass, but the biomass production of Bjerkandera sp. and Sarocladium sp. was not affected by the same treatment. The accumulation of Pb in Microdochium sp. increased as a function of the concentration of the metal in the growth media, between 48.3 μM and 241.3 μM. We showed that two Poaceae plants growing on a Lead-Zinc tailing storage facility are a source of endophyte fungi, and that Pb had a differential effect on the growth of the isolated fungi independent of the plant of origin.
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Affiliation(s)
- Rodolfo Parada
- Facultad de Química y Biología Universidad de Santiago de Chile, Santiago, Chile Av. Bernardo O´Higgins 3363, Post-code 9170022, Estación Central, Chile
| | - Leonora Mendoza
- Facultad de Química y Biología Universidad de Santiago de Chile, Santiago, Chile Av. Bernardo O´Higgins 3363, Post-code 9170022, Estación Central, Chile
| | - Milena Cotoras
- Facultad de Química y Biología Universidad de Santiago de Chile, Santiago, Chile Av. Bernardo O´Higgins 3363, Post-code 9170022, Estación Central, Chile
| | - Claudia Ortiz
- Facultad de Química y Biología Universidad de Santiago de Chile, Santiago, Chile Av. Bernardo O´Higgins 3363, Post-code 9170022, Estación Central, Chile
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Insights into the beneficial roles of dark septate endophytes in plants under challenging environment: resilience to biotic and abiotic stresses. World J Microbiol Biotechnol 2022; 38:79. [PMID: 35332399 DOI: 10.1007/s11274-022-03264-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Accepted: 03/09/2022] [Indexed: 12/22/2022]
Abstract
Dark septate endophytes (DSE) exert a plethora of effects in regulating plant growth, signalling and stress tolerance. The advent of metagenomics has led to the identification of various species of DSE to be associated with plant organs. They are known to modulate growth, nutrient uptake, phytohormone biosynthesis and production of active bioconstituents in several plants. The interactions between the DSE and host plants are mostly mutualistic but they can also be neutral or exhibit negative interactions. The DSE has beneficial role in removal/sequestration of toxic heavy metals from various environmental sites. Here, we discuss the beneficial role of DSE in enhancing plant tolerance to heavy metal stress, drought conditions, high salinity and protection from various plant pathogens. Furthermore, the underlying mechanism of stress resilience facilitated by DSE-plant interaction has also been discussed. The article also provides insights to some important future perspectives associated with DSE-mediated phytoremediation and reclamation of polluted land worldwide thus facilitating sustainable agriculture.
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11
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Differential response of physiology and metabolic response to drought stress in different sweetpotato cultivars. PLoS One 2022; 17:e0264847. [PMID: 35271628 PMCID: PMC8912141 DOI: 10.1371/journal.pone.0264847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 02/17/2022] [Indexed: 11/19/2022] Open
Abstract
Sweetpotato (Ipomoea batatas [L.] Lam) is a widely cultivated food crop with generally good adaptability. However, drought stress can cause a significant decline in yield. To reveal the response mechanism of sweetpotato to drought stress, an integrated physiological, proteomic and metabolomic investigation was conducted in leaves of two sweetpotato varieties with differing responses to drought stress, drought-resistant Wanzishu56 (WZ56) and a more sensitive variety, Ningzishu2(NZ2). Physiological analysis showed that the variety with better drought tolerance had superior performance in water retention capacity and photosynthetic efficiency under drought stress. A total of 1140 proteins were identified within the two varieties. Among them, 192 differentially expressed proteins were detected under drought conditions, including 97 that were up-regulated. Functional analysis showed that these up-regulated proteins were primarily involved in photosynthesis, reactive oxygen species metabolism, organonitrogen compound metabolism, and precursor metabolite catabolism and energy generation. All differentially expressed proteins in WZ56 that were involved in photosynthetic and glutathione metabolic processes were up-regulated. Enzyme activity assays were carried out to validate the proteomics data. Moreover, 75 metabolites were found to have a higher expression level in WZ56 than NZ2 under drought stress. The higher concentration of carbohydrates, amino acids, flavonoids and organic acids found in drought-stressed leaves of WZ56 suggested that these metabolites may improve the drought resistance of sweetpotato. This study uncovered specific-proteins and metabolites associated with drought resistance, providing new insights into the molecular mechanisms of drought tolerance in sweetpotato.
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12
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Singh PP, Srivastava D, Shukla S, Varsha. Rhizophagus proliferus genome sequence reiterates conservation of genetic traits in AM fungi, but predicts higher saprotrophic activity. Arch Microbiol 2021; 204:105. [DOI: 10.1007/s00203-021-02651-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 10/06/2021] [Accepted: 10/07/2021] [Indexed: 11/24/2022]
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13
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Hongyan X, Zhanling X, Hongchen J, Jing G, Qing M, Yuan Z, Xiaofang W. Transcriptome Analysis and Expression Profiling of Molecular Responses to Cd Toxicity in Morchella spongiola. MYCOBIOLOGY 2021; 49:421-433. [PMID: 34512085 PMCID: PMC8409932 DOI: 10.1080/12298093.2021.1937882] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 05/09/2021] [Accepted: 05/28/2021] [Indexed: 05/25/2023]
Abstract
Morchella is a genus of fungi with the ability to concentrate Cd both in the fruit-body and mycelium. However, the molecular mechanisms conferring resistance to Cd stress in Morchella are unknown. Here, RNA-based transcriptomic sequencing was used to identify the genes and pathways involved in Cd tolerance in Morchella spongiola. 7444 differentially expressed genes (DEGs) were identified by cultivating M. spongiola in media containing 0.15, 0.90, or 1.50 mg/L Cd2+. The DEGs were divided into six sub-clusters based on their global expression profiles. GO enrichment analysis indicated that numerous DEGs were associated with catalytic activity, cell cycle control, and the ribosome. KEGG enrichment analysis showed that the main pathways under Cd stress were MAPK signaling, oxidative phosphorylation, pyruvate metabolism, and propanoate metabolism. In addition, several DEGs encoding ion transporters, enzymatic/non-enzymatic antioxidants, and transcription factors were identified. Based on these results, a preliminary gene regulatory network was firstly proposed to illustrate the molecular mechanisms of Cd detoxification in M. spongiola. These results provide valuable insights into the Cd tolerance mechanism of M. spongiola and constitute a robust foundation for further studies on detoxification mechanisms in macrofungi that could potentially lead to the development of new and improved fungal bioremediation strategies.
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Affiliation(s)
- Xu Hongyan
- College of Eco-Environmental Engineering, Qinghai University, Qinghai, China
- Academy of Agriculture and Forestry Sciences, Qinghai University, Qinghai, China
| | - Xie Zhanling
- College of Eco-Environmental Engineering, Qinghai University, Qinghai, China
| | - Jiang Hongchen
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, China
| | - Guo Jing
- College of Eco-Environmental Engineering, Qinghai University, Qinghai, China
| | - Meng Qing
- College of Eco-Environmental Engineering, Qinghai University, Qinghai, China
| | - Zhao Yuan
- College of Eco-Environmental Engineering, Qinghai University, Qinghai, China
| | - Wang Xiaofang
- College of Eco-Environmental Engineering, Qinghai University, Qinghai, China
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14
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Tian W, Li L, Xiao X, Wu H, Wang Y, Hu Z, Begum N, Zou Y, Lou L, Chang M, Cai Q. Identification of a plant endophytic growth-promoting bacteria capable of inhibiting cadmium uptake in rice. J Appl Microbiol 2021; 132:520-531. [PMID: 34216530 DOI: 10.1111/jam.15201] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 06/27/2021] [Accepted: 06/29/2021] [Indexed: 11/28/2022]
Abstract
AIMS The study aims to identify a novel plant growth-promoting bacteria (PGPB), which contributes to promoting growth and reducing cadmium (Cd) concentration in rice under Cd-contaminated conditions. METHODS AND RESULTS Nine bacterial strains were isolated from plants grown in Cd-contaminated soil. These bacteria were tolerant to 1000 μmol/L CdCl2 , capable of producing indole-3-acetic acid, fixing nitrogen and solubilizing phosphate. The result of hydroponic experiment showed that under the control and Cd stress conditions, the dry weight of the Tm02-inoculated rice seedlings increased significantly. Furthermore, under Cd stress, the concentration of Cd in the shoot of the Tm02-inoculated seedlings decreased significantly, while there was no significant difference in Cd concentration between treatment with other eight strains and noninoculated seedlings. The same results were observed in the pot experiment as well, where there was a significantly reduced Cd concentration in rice grains of the Tm02-inoculated rice plants. Tm02 was classified as Pantoea agglomerans through 16S rDNA sequencing. CONCLUSIONS A novel PGPB strain Tm02 was identified and confirmed that it has the function of promoting rice growth and reducing Cd concentration in rice grain under Cd-contaminated conditions. This strain has the potential to improve rice yield in Cd-contaminated paddy fields. SIGNIFICANCE AND IMPACT OF THE STUDY This study provides a new example of using PGPB to improve the tolerance of rice to Cd pollution.
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Affiliation(s)
- Wei Tian
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Le Li
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Xiao Xiao
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Huili Wu
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Yulong Wang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Zhaoyang Hu
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China.,College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang, China
| | - Nahmina Begum
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China.,Lalmatia Mohila College, Dhaka, Bangladesh
| | - Yiping Zou
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Laiqing Lou
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Ming Chang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Qingsheng Cai
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
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15
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Zhang L, Liu Y, Zhong M, Li Z, Dong Y, Gedalanga P. Insights into enhanced biodegradation of sulfadimethoxine by catalyst: Transcriptomic responses and free radical interactions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 774:145641. [PMID: 33609830 DOI: 10.1016/j.scitotenv.2021.145641] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/31/2021] [Accepted: 01/31/2021] [Indexed: 06/12/2023]
Abstract
The occurrence of sulfonamides in the environment is a severe global threat to public health due to the increasing prevalence of antibiotic selection pressure that may lead to the development of antibiotic resistance. We report an enhanced biodegradation of sulfadimethoxine (SDM) by Phanerochaete chrysosporium (Pc) with lignocellulosic biomass (Lb) using Fe3O4-ZSM-5 as a catalyst (Pc/Fe3O4-ZSM-5/Lb). SDM was completely degraded within 4 days at pH 7.0 in the Pc/Fe3O4-ZSM-5/Lb system. Transcriptomic, metabolites and free radical analyses were performed to explore the detailed molecular mechanisms of SDM degradation. A total of 246 genes of Pc in the Pc/Fe3O4-ZSM-5/Lb system exhibited significant upregulation compared to that in Pc alone. Upregulated genes encoding cellulases, cytochrome P450, cellobiose quinone oxidoreductase, and cellobiose dehydrogenase were involved in SDM degradation in the Pc/Fe3O4-ZSM-5/Lb system. In addition, genes encoding glutathione S-transferase and cytochrome P450 genes related to oxidative stress and detoxification were all significantly upregulated (P < 0.01). Electron paramagnetic resonance revealed the generation of OH suggesting a free radical pathway could be catalyzed by Fe3O4-ZSM-5 and the enzymes. These findings of catalyst-assisted SDM biodegradation will be valuable for remediation of antibiotics from contaminated wastewater.
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Affiliation(s)
- Lan Zhang
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100000, China
| | - Yun Liu
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100000, China; National Engineering Laboratory for Site Remediation Technologies, Beijing 100015, China.
| | - Ming Zhong
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100000, China
| | - Zhongpei Li
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100000, China
| | - Yuanhua Dong
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100000, China
| | - Phillip Gedalanga
- Department of Public Health, California State University, Fullerton. 800 N. State College Blvd, Fullerton, CA 92834, United States of America
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16
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Geetha N, Bhavya G, Abhijith P, Shekhar R, Dayananda K, Jogaiah S. Insights into nanomycoremediation: Secretomics and mycogenic biopolymer nanocomposites for heavy metal detoxification. JOURNAL OF HAZARDOUS MATERIALS 2021; 409:124541. [PMID: 33223321 DOI: 10.1016/j.jhazmat.2020.124541] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 10/02/2020] [Accepted: 11/06/2020] [Indexed: 05/21/2023]
Abstract
Our environment thrives on the subtle balance achieved by the forever cyclical nature of building and rebuilding life through natural processes. Fungi, being the evident armor of bioremediation, is the indispensable element of the soil food web, contribute to be the nature's most dynamic arsenal with non-specific enzymes like peroxidase (POX), glutathione peroxidase (GPx), catalase (CAT), superoxide dismutase (SOD), non-enzymatic compounds like thiol (-SH) groups and non-protein compounds such as glutathione (GSH) and metallothionein (MT). Recently, the area of nanomycoremediation has been gaining momentum as a powerful tool for environmental clean-up strategies with its ability to detoxify heavy metals with its unique characteristics to adapt mechanisms such as biosorption, bioconversion, and biodegradation to harmless end products. The insight into the elaborate secretomic processes provides us with huge opportunities for creating a magnificent living bioremediation apparatus. This review discusses the scope and recent advances in the lesser understood area, nanomycoremediation, the state-of-the-art, innovative, cost-effective and promising tool for detoxification of heavy metal pollutants and focuses on the metabolic capabilities and secretomics with nanobiotechnological interventions.
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Affiliation(s)
- Nagaraja Geetha
- Nanobiotechnology Laboratory, Department of Studies in Biotechnology, University of Mysore, Manasagangotri, Mysuru 570006, Karnataka, India
| | - Gurulingaiah Bhavya
- Nanobiotechnology Laboratory, Department of Studies in Biotechnology, University of Mysore, Manasagangotri, Mysuru 570006, Karnataka, India
| | - Padukana Abhijith
- Nanobiotechnology Laboratory, Department of Studies in Biotechnology, University of Mysore, Manasagangotri, Mysuru 570006, Karnataka, India
| | - Ravikant Shekhar
- Nanobiotechnology Laboratory, Department of Studies in Biotechnology, University of Mysore, Manasagangotri, Mysuru 570006, Karnataka, India
| | - Karigowda Dayananda
- Nanobiotechnology Laboratory, Department of Studies in Biotechnology, University of Mysore, Manasagangotri, Mysuru 570006, Karnataka, India
| | - Sudisha Jogaiah
- Laboratory of Plant Healthcare and Diagnostics, P.G. Department of Biotechnology and Microbiology, Karnatak University, Dharwad 580003, Karnataka, India.
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17
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Guo J, Liu X, Li Y, Ji H, Liu C, Zhou L, Huang Y, Bai C, Jiang Z, Wu X. Screening for proteins related to the biosynthesis of hispidin and its derivatives in Phellinus igniarius using iTRAQ proteomic analysis. BMC Microbiol 2021; 21:81. [PMID: 33711926 PMCID: PMC7953727 DOI: 10.1186/s12866-021-02134-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Accepted: 02/23/2021] [Indexed: 12/03/2022] Open
Abstract
Background Hispidin (HIP) and its derivatives, a class of natural fungal metabolites, possess complex chemical structures with extensive pharmacological activities. Phellinus igniarius, the most common source of HIP, can be used as both medicine and food. However, the biosynthetic pathway of HIP in P. igniarius remains unclear and we have a limited understanding of the regulatory mechanisms related to HIP. In this work, we sought to illustrate a biosynthesis system for hispidin and its derivatives at the protein level. Results We found that tricetolatone (TL) is a key biosynthetic precursor in the biosynthetic pathway of hispidin and that its addition led to increased production of hispidin and various hispidin derivatives. Based on the changes in the concentrations of precursors and intermediates, key timepoints in the biosynthetic process were identified. We used isobaric tags for relative and absolute quantification (iTRAQ) to study dynamic changes of related proteins in vitro. The 270 differentially expressed proteins were determined by GO enrichment analysis to be primarily related to energy metabolism, oxidative phosphorylation, and environmental stress responses after TL supplementation. The differentially expressed proteins were related to ATP synthase, NAD binding protein, oxidoreductase, and other elements associated with electron transfer and dehydrogenation reactions during the biosynthesis of hispidin and its derivatives. Multiple reaction monitoring (MRM) technology was used to selectively verify the iTRAQ results, leading us to screen 11 proteins that were predicted to be related to the biosynthesis pathways. Conclution These findings help to clarify the molecular mechanism of biosynthesis of hispidin and its derivatives and may serve as a foundation for future strategies to identify new hispidin derivatives. Supplementary Information The online version contains supplementary material available at 10.1186/s12866-021-02134-0.
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Affiliation(s)
- Jinjing Guo
- College of Pharmacy, Ningxia Medical University, Yinchuan, 750004, P.R. China
| | - Xiaoxi Liu
- College of Pharmacy, Ningxia Medical University, Yinchuan, 750004, P.R. China
| | - Yuanjie Li
- College of Pharmacy, Ningxia Medical University, Yinchuan, 750004, P.R. China
| | - Hongyan Ji
- Department of Pharmaceutics, General Hospital of Ningxia Medical University, Yinchuan, 750004, P.R. China
| | - Cheng Liu
- College of Pharmacy, Ningxia Medical University, Yinchuan, 750004, P.R. China
| | - Li Zhou
- College of Pharmacy, Ningxia Medical University, Yinchuan, 750004, P.R. China
| | - Yu Huang
- College of Pharmacy, Ningxia Medical University, Yinchuan, 750004, P.R. China
| | - Changcai Bai
- College of Pharmacy, Ningxia Medical University, Yinchuan, 750004, P.R. China
| | - Zhibo Jiang
- Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan, 750021, P.R. China
| | - Xiuli Wu
- College of Pharmacy, Ningxia Medical University, Yinchuan, 750004, P.R. China.
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18
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Kumar V, Dwivedi SK. Mycoremediation of heavy metals: processes, mechanisms, and affecting factors. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:10375-10412. [PMID: 33410020 DOI: 10.1007/s11356-020-11491-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 10/30/2020] [Indexed: 05/27/2023]
Abstract
Industrial processes and mining of coal and metal ores are generating a number of threats by polluting natural water bodies. Contamination of heavy metals (HMs) in water and soil is the most serious problem caused by industrial and mining processes and other anthropogenic activities. The available literature suggests that existing conventional technologies are costly and generated hazardous waste that necessitates disposal. So, there is a need for cheap and green approaches for the treatment of such contaminated wastewater. Bioremediation is considered a sustainable way where fungi seem to be good bioremediation agents to treat HM-polluted wastewater. Fungi have high adsorption and accumulation capacity of HMs and can be potentially utilized. The most important biomechanisms which are involved in HM tolerance and removal by fungi are bioaccumulation, bioadsorption, biosynthesis, biomineralisation, bioreduction, bio-oxidation, extracellular precipitation, intracellular precipitation, surface sorption, etc. which vary from species to species. However, the time, pH, temperature, concentration of HMs, the dose of fungal biomass, and shaking rate are the most influencing factors that affect the bioremediation of HMs and vary with characteristics of the fungi and nature of the HMs. In this review, we have discussed the application of fungi, involved tolerance and removal strategies in fungi, and factors affecting the removal of HMs.
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Affiliation(s)
- Vinay Kumar
- Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Lucknow, 226025, India.
| | - Shiv Kumar Dwivedi
- Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Lucknow, 226025, India
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19
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Yu Y, Teng Z, Mou Z, Lv Y, Li T, Chen S, Zhao D, Zhao Z. Melatonin confers heavy metal-induced tolerance by alleviating oxidative stress and reducing the heavy metal accumulation in Exophiala pisciphila, a dark septate endophyte (DSE). BMC Microbiol 2021; 21:40. [PMID: 33546601 PMCID: PMC7863494 DOI: 10.1186/s12866-021-02098-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 01/26/2021] [Indexed: 12/17/2022] Open
Abstract
Background Melatonin (MT), ubiquitous in almost all organisms, functions as a free radical scavenger. Despite several reports on its role as an antioxidant in animals, plants, and some microorganisms, extensive studies in filamentous fungi are limited. Based upon the role of melatonin as an antioxidant, we investigated its role in heavy metal-induced stress tolerance in Exophiala pisciphila, a dark septate endophyte (DSE), by studying the underlying mechanisms in alleviating oxidative stress and reducing heavy metal accumulation. Results A significant decrease in malondialdehyde (MDA) and oxygen free radical (OFR) in E. pisciphila was recorded under Cd, Zn, and Pb stresses as compared to the control. Pretreatment of E. pisciphila with 200.0 μM exogenous melatonin significantly increased the activity of superoxide dismutase (SOD) under Zn and Pb stresses. Pretreatment with 200.0 μM melatonin also lowered Cd, Zn, and Pb concentrations significantly. Melatonin production was enhanced by Cd, Cu, and Zn after 2 d, and melatonin biosynthetic enzyme genes, E. pisciphila tryptophan decarboxylase (EpTDC1) and serotonin N-acetyltransferase (EpSNAT1), were transcriptionally upregulated. The overexpression of EpTDC1 and N-acetylserotonin O-methyltransferase (EpASMT1) in Escherichia coli and Arabidopsis thaliana enhanced its heavy metal-induced stress tolerance. The overexpression of EpTDC1 and EpASMT1 reduced the Cd accumulation in the whole A. thaliana plants, especially in the roots. Conclusions Melatonin conferred heavy metal-induced stress tolerance by alleviating oxidative stress, activating antioxidant enzyme SOD, and reducing heavy metal accumulation in E. pisciphila. Melatonin biosynthetic enzyme genes of E. pisciphila also played key roles in limiting excessive heavy metal accumulation in A. thaliana. These findings can be extended to understand the role of melatonin in other DSEs associated with economically important plants and help develop new strategies in sustainable agriculture practice where plants can grow in soils contaminated with heavy metals. Supplementary Information The online version contains supplementary material available at 10.1186/s12866-021-02098-1.
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Affiliation(s)
- Yang Yu
- State Key Laboratory for Conservation and Utilization of Bio-resources in Yunnan, Yunnan University, Kunming, China
| | - Zhaowei Teng
- Department of Orthopedics, The Sixth Affiliated Hospital of Kunming Medical University, Yuxi, Yunan, China.,Department of Orthopedics, The First people's Hospital of Yunnan Province, Kunming, China
| | - Zongmin Mou
- Biocontrol Engineering Research Center of Plant Disease and Pest, Yunnan University, Kunming, China.,Biocontrol Engineering Research Center of Crop Disease and Pest, Yunnan University, Kunming, China.,School of Ecology and Environmental Science, Yunnan University, Kunming, China
| | - Yan Lv
- Department of Orthopedics, The Sixth Affiliated Hospital of Kunming Medical University, Yuxi, Yunan, China.,Department of Orthopedics, The First people's Hospital of Yunnan Province, Kunming, China
| | - Tao Li
- State Key Laboratory for Conservation and Utilization of Bio-resources in Yunnan, Yunnan University, Kunming, China
| | - Suiyun Chen
- Biocontrol Engineering Research Center of Plant Disease and Pest, Yunnan University, Kunming, China.,Biocontrol Engineering Research Center of Crop Disease and Pest, Yunnan University, Kunming, China.,School of Ecology and Environmental Science, Yunnan University, Kunming, China
| | - Dake Zhao
- Biocontrol Engineering Research Center of Plant Disease and Pest, Yunnan University, Kunming, China. .,Biocontrol Engineering Research Center of Crop Disease and Pest, Yunnan University, Kunming, China. .,School of Ecology and Environmental Science, Yunnan University, Kunming, China.
| | - Zhiwei Zhao
- State Key Laboratory for Conservation and Utilization of Bio-resources in Yunnan, Yunnan University, Kunming, China.
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20
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Refaey M, Abdel-Azeem AM, Abo Nahas HH, Abdel-Azeem MA, El-Saharty AA. Role of Fungi in Bioremediation of Soil Contaminated with Heavy Metals. Fungal Biol 2021. [DOI: 10.1007/978-3-030-67561-5_16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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21
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Zhang J, Chi Y, Li S, Gu X, Ye Y. Cloning, homology modeling, heterologous expression and bioinformatic analysis of Ure2pA glutathione S-transferase gene from white rot fungus Trametes gibbosa. BIOTECHNOL BIOTEC EQ 2021. [DOI: 10.1080/13102818.2021.1997157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Jian Zhang
- Department of Forest Protection, School of Forestry, Northeast Forestry University, Harbin, P.R. China
| | - Yujie Chi
- Department of Forest Protection, School of Forestry, Northeast Forestry University, Harbin, P.R. China
| | - Shuxuan Li
- Department of Forest Protection, School of Forestry, Northeast Forestry University, Harbin, P.R. China
| | - Xinzhi Gu
- Department of Forest Protection, School of Forestry, Northeast Forestry University, Harbin, P.R. China
| | - Yi Ye
- Department of Forest Protection, School of Forestry, Northeast Forestry University, Harbin, P.R. China
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22
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Del Olmo G, Ahmad A, Jensen H, Karunakaran E, Rosales E, Calero Preciado C, Gaskin P, Douterelo I. Influence of phosphate dosing on biofilms development on lead in chlorinated drinking water bioreactors. NPJ Biofilms Microbiomes 2020; 6:43. [PMID: 33097725 PMCID: PMC7585443 DOI: 10.1038/s41522-020-00152-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 09/24/2020] [Indexed: 12/22/2022] Open
Abstract
Phosphate dosing is used by water utilities to prevent plumbosolvency in water supply networks. However, there is a lack of knowledge regarding biofilm formation on lead and plastic materials when phosphate concentrations are modified in drinking water systems. In this study, biofilms were grown over lead coupons and PVC tubes in bioreactors supplied with local drinking water treated to provide different phosphate doses (below 1, 1 and 2 mg/L) over a period of 28 days. A range of commercial iron pellets (GEH104 and WARP) were tested aiming to maintain phosphate levels below the average 1 mg/L found in drinking water. Changes in biofilm community structure in response to three different phosphate treatments were characterised by Illumina sequencing of the 16S rRNA gene for bacteria and the ITS2 gene for fungi. Scanning electron microscopy was used to visualise physical differences in biofilm development in two types of materials, lead and PVC. The experimental results from the kinetics of phosphate absorption showed that the GEH104 pellets were the best option to, in the long term, reduce phosphate levels while preventing undesirable turbidity increases in drinking water. Phosphate-enrichment promoted a reduction of bacterial diversity but increased that of fungi in biofilms. Overall, higher phosphate levels selected for microorganisms with enhanced capabilities related to phosphorus metabolism and heavy metal resistance. This research brings new insights regarding the influence of different phosphate concentrations on mixed-species biofilms formation and drinking water quality, which are relevant to inform best management practices in drinking water treatment.
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Affiliation(s)
- Gonzalo Del Olmo
- Department of Civil and Structural Engineering, University of Sheffield, Sheffield, UK
| | - Arslan Ahmad
- KWR Water Cycle Research Institute, Groningenhaven 7, 3433, PE, Nieuwegein, The Netherlands
- KTH-International Groundwater Arsenic Research Group, Department of Sustainable Development, Environmental Science and Engineering, KTH Royal Institute of Technology, Teknikringen 10B, SE-100 44, Stockholm, Sweden
- Department of Environmental Technology, Wageningen University and Research (WUR), Droevendaalsesteeg 4, 6708, PB, Wageningen, The Netherlands
| | - Henriette Jensen
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield, UK
| | - Esther Karunakaran
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield, UK
| | - Esther Rosales
- Department of Civil and Structural Engineering, University of Sheffield, Sheffield, UK
| | | | | | - Isabel Douterelo
- Department of Civil and Structural Engineering, University of Sheffield, Sheffield, UK.
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23
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An orphan protein of Fusarium graminearum modulates host immunity by mediating proteasomal degradation of TaSnRK1α. Nat Commun 2020; 11:4382. [PMID: 32873802 PMCID: PMC7462860 DOI: 10.1038/s41467-020-18240-y] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 08/06/2020] [Indexed: 02/06/2023] Open
Abstract
Fusarium graminearum is a causal agent of Fusarium head blight (FHB) and a deoxynivalenol (DON) producer. In this study, OSP24 is identified as an important virulence factor in systematic characterization of the 50 orphan secreted protein (OSP) genes of F. graminearum. Although dispensable for growth and initial penetration, OSP24 is important for infectious growth in wheat rachis tissues. OSP24 is specifically expressed during pathogenesis and its transient expression suppresses BAX- or INF1-induced cell death. Osp24 is translocated into plant cells and two of its 8 cysteine-residues are required for its function. Wheat SNF1-related kinase TaSnRK1α is identified as an Osp24-interacting protein and shows to be important for FHB resistance in TaSnRK1α-overexpressing or silencing transgenic plants. Osp24 accelerates the degradation of TaSnRK1α by facilitating its association with the ubiquitin-26S proteasome. Interestingly, TaSnRK1α also interacts with TaFROG, an orphan wheat protein induced by DON. TaFROG competes against Osp24 for binding with the same region of TaSnRKα and protects it from degradation. Overexpression of TaFROG stabilizes TaSnRK1α and increases FHB resistance. Taken together, Osp24 functions as a cytoplasmic effector by competing against TaFROG for binding with TaSnRK1α, demonstrating the counteracting roles of orphan proteins of both host and fungal pathogens during their interactions. Fusarium graminearum is a major fungal pathogen of cereals. Here the authors show that F. graminearum secretes an effector, Osp24, that induces degradation of the wheat TaSnRK1α kinase to promote disease while an orphan wheat protein, TaFROG1, can compete with Osp24 for binding to TaSnRK1α and protect it from degradation
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Cao GH, He S, Chen D, Li T, Zhao ZW. EpABC Genes in the Adaptive Responses of Exophiala pisciphila to Metal Stress: Functional Importance and Relation to Metal Tolerance. Appl Environ Microbiol 2019; 85:e01844-19. [PMID: 31540987 PMCID: PMC6856334 DOI: 10.1128/aem.01844-19] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Accepted: 09/14/2019] [Indexed: 11/20/2022] Open
Abstract
Exophiala pisciphila is one of the dominant dark septate endophytes (DSEs) colonizing metal-polluted slag heaps in southwest China. It shows numerous super-metal-tolerant characteristics, but the molecular mechanisms involved remain largely unknown. In the present study, the functional roles of a specific set of ATP-binding cassette (ABC) transporters in E. pisciphila were characterized. In total, 26 EpABC genes belonging to 6 subfamilies (ABCA to ABCG) were annotated in previous transcriptome sequencing libraries, and all were regulated by metal ions (Pb, Zn, and Cd), which was dependent on the metal species and/or concentrations tested. The results from the heterologous expression of 3 representative EpABC genes confirmed that the expression of EpABC2.1, EpABC3.1, or EpABC4.1 restored the growth of metal-sensitive mutant Saccharomyces cerevisiae strains and significantly improved the tolerance of Arabidopsis thaliana to Pb, Zn, and Cd. Interestingly, the expression of the 3 EpABC genes further altered metal (Pb, Zn, and Cd) uptake and accumulation and promoted growth by alleviating the inhibitory activity in yeast and thale cress caused by toxic ions. These functions along with their vacuolar location suggest that the 3 EpABC transporters may enhance the detoxification of vacuolar compartmentation via transport activities across their membranes. In conclusion, the 26 annotated EpABC transporters may play a major role in maintaining the homeostasis of various metal ions in different cellular compartments, conferring an extreme adaptative advantage to E. pisciphila in metal-polluted slag heaps.IMPORTANCE Many ABC transporters and their functions have been identified in animals and plants. However, little is known about ABC genes in filamentous fungi, especially DSEs, which tend to dominantly colonize the roots of plants growing in stressed environments. Our results deepen the understanding of the function of the ABC genes of a super-metal-tolerant DSE (E. pisciphila) in enhancing its heavy metal resistance and detoxification. Furthermore, the genetic resources of DSEs, e.g., numerous EpABC genes, especially from super-metal-tolerant strains in heavy metal-polluted environments, can be directly used for transgenic applications to improve tolerance and phytoextraction potential.
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Affiliation(s)
- Guan-Hua Cao
- State Key Laboratory of Conservation and Utilization for Bioresources in Yunnan, Yunnan University, Kunming, Yunnan, China
- School of Traditional Chinese Medicine, Yunnan University of Chinese Medicine, Kunming, Yunnan, China
| | - Sen He
- School of Traditional Chinese Medicine, Yunnan University of Chinese Medicine, Kunming, Yunnan, China
| | - Di Chen
- School of Traditional Chinese Medicine, Yunnan University of Chinese Medicine, Kunming, Yunnan, China
| | - Tao Li
- State Key Laboratory of Conservation and Utilization for Bioresources in Yunnan, Yunnan University, Kunming, Yunnan, China
| | - Zhi-Wei Zhao
- State Key Laboratory of Conservation and Utilization for Bioresources in Yunnan, Yunnan University, Kunming, Yunnan, China
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Ravintheran SK, Sivaprakasam S, Loke S, Lee SY, Manickam R, Yahya A, Croft L, Millard A, Parimannan S, Rajandas H. Complete genome sequence of Sphingomonas paucimobilis AIMST S2, a xenobiotic-degrading bacterium. Sci Data 2019; 6:280. [PMID: 31767854 PMCID: PMC6877580 DOI: 10.1038/s41597-019-0289-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 10/09/2019] [Indexed: 12/05/2022] Open
Abstract
Complete genomes of xenobiotic-degrading microorganisms provide valuable resources for researchers to understand molecular mechanisms involved in bioremediation. Despite the well-known ability of Sphingomonas paucimobilis to degrade persistent xenobiotic compounds, a complete genome sequencing is lacking for this organism. In line with this, we report the first complete genome sequence of Sphingomonas paucimobilis (strain AIMST S2), an organophosphate and hydrocarbon-degrading bacterium isolated from oil-polluted soil at Kedah, Malaysia. The genome was derived from a hybrid assembly of short and long reads generated by Illumina HiSeq and MinION, respectively. The assembly resulted in a single contig of 4,005,505 bases which consisted of 3,612 CDS and 56 tRNAs. An array of genes involved in xenobiotic degradation and plant-growth promoters were identified, suggesting its' potential role as an effective microorganism in bioremediation and agriculture. Having reported the first complete genome of the species, this study will serve as a stepping stone for comparative genome analysis of Sphingomonas strains and other xenobiotic-degrading microorganisms as well as gene expression studies in organophosphate biodegradation.
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Affiliation(s)
- Suganniiya K Ravintheran
- Centre of Excellence for Omics-Driven Computational Biodiscovery (COMBio), Faculty of Applied Sciences, AIMST University, Bedong, Malaysia
| | - Sumitra Sivaprakasam
- Centre of Excellence for Omics-Driven Computational Biodiscovery (COMBio), Faculty of Applied Sciences, AIMST University, Bedong, Malaysia
| | - Stella Loke
- School of Life and Environmental Sciences, Deakin University, Burwood Campus, Burwood, Australia
| | - Su Yin Lee
- Centre of Excellence for Omics-Driven Computational Biodiscovery (COMBio), Faculty of Applied Sciences, AIMST University, Bedong, Malaysia
| | - Ravichandran Manickam
- Centre of Excellence for Omics-Driven Computational Biodiscovery (COMBio), Faculty of Applied Sciences, AIMST University, Bedong, Malaysia
| | - Adibah Yahya
- Biorefinery Technology Laboratory, Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Skudai, Malaysia
| | - Lawrence Croft
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin, University, Geelong, Australia
| | - Andrew Millard
- Department of Genetics and Genome Biology, University of Leicester, Leicester, UK
| | - Sivachandran Parimannan
- Centre of Excellence for Omics-Driven Computational Biodiscovery (COMBio), Faculty of Applied Sciences, AIMST University, Bedong, Malaysia.
| | - Heera Rajandas
- Centre of Excellence for Omics-Driven Computational Biodiscovery (COMBio), Faculty of Applied Sciences, AIMST University, Bedong, Malaysia.
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Wei L, Zhu Y, Liu R, Zhang A, Zhu M, Xu W, Lin A, Lu K, Li J. Genome wide identification and comparative analysis of glutathione transferases (GST) family genes in Brassica napus. Sci Rep 2019; 9:9196. [PMID: 31235772 PMCID: PMC6591421 DOI: 10.1038/s41598-019-45744-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 06/14/2019] [Indexed: 11/09/2022] Open
Abstract
Glutathione transferases (GSTs) are multifunctional enzymes that play important roles in plant development and responses to biotic and abiotic stress. However, a systematic analysis of GST family members in Brassica napus has not yet been reported. In this study, we identified 179 full-length GST genes in B. napus, 44.2% of which are clustered on various chromosomes. In addition, we identified 141 duplicated GST gene pairs in B. napus. Molecular evolutionary analysis showed that speciation and whole-genome triplication played important roles in the divergence of the B. napus GST duplicated genes. Transcriptome analysis of 21 tissues at different developmental stages showed that 47.6% of duplicated GST gene pairs have divergent expression patterns, perhaps due to structural divergence. We constructed a GST gene coexpression network with genes encoding various transcription factors (NAC, MYB, WRKY and bZIP) and identified six modules, including genes expressed during late seed development (after 40 days; BnGSTU19, BnGSTU20 and BnGSTZ1) and in the seed coat (BnGSTF6 and BnGSTF12), stamen and anther (BnGSTF8), root and stem (BnGSTU21), leaves and funiculus, as well as during the late stage of pericarp development (after 40 days; BnGSTU12 and BnGSTF2) and in the radicle during seed germination (BnGSTF14, BnGSTU1, BnGSTU28, and BnGSTZ1). These findings lay the foundation for elucidating the roles of GSTs in B. napus.
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Affiliation(s)
- Lijuan Wei
- Chongqing Engineering Research Center for Rapeseed, College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China.,Academy of Agricultural Sciences, Southwest University, Chongqing, 400716, China
| | - Yan Zhu
- Chongqing Engineering Research Center for Rapeseed, College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China.,Academy of Agricultural Sciences, Southwest University, Chongqing, 400716, China
| | - Ruiying Liu
- Chongqing Engineering Research Center for Rapeseed, College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China.,Academy of Agricultural Sciences, Southwest University, Chongqing, 400716, China
| | - Aoxiang Zhang
- Chongqing Engineering Research Center for Rapeseed, College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China.,Academy of Agricultural Sciences, Southwest University, Chongqing, 400716, China
| | - Meicheng Zhu
- Chongqing Engineering Research Center for Rapeseed, College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China.,Academy of Agricultural Sciences, Southwest University, Chongqing, 400716, China
| | - Wen Xu
- Chongqing Engineering Research Center for Rapeseed, College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China.,Academy of Agricultural Sciences, Southwest University, Chongqing, 400716, China
| | - Ai Lin
- Chongqing Engineering Research Center for Rapeseed, College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China.,Academy of Agricultural Sciences, Southwest University, Chongqing, 400716, China
| | - Kun Lu
- Chongqing Engineering Research Center for Rapeseed, College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China.,Academy of Agricultural Sciences, Southwest University, Chongqing, 400716, China
| | - Jiana Li
- Chongqing Engineering Research Center for Rapeseed, College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China. .,Academy of Agricultural Sciences, Southwest University, Chongqing, 400716, China.
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Kotoky R, Nath S, Kumar Maheshwari D, Pandey P. Cadmium resistant plant growth promoting rhizobacteria Serratia marcescens S2I7 associated with the growth promotion of rice plant. ACTA ACUST UNITED AC 2019. [DOI: 10.1007/s42398-019-00055-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Exploring the Benefits of Endophytic Fungi via Omics. ADVANCES IN ENDOPHYTIC FUNGAL RESEARCH 2019. [DOI: 10.1007/978-3-030-03589-1_4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Dubey S, Gupta A, Khare A, Jain G, Bose S, Rani V. Long- and short-term protective responses of rice seedling to combat Cr(VI) toxicity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:36163-36172. [PMID: 30362036 DOI: 10.1007/s11356-018-3422-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 10/08/2018] [Indexed: 06/08/2023]
Abstract
In India, rice is the principal crop and is the staple diet of majority of the population. Widespread use of hexavalent chromium [Cr(VI)] in leather processing, wood preservatives, stainless-steel manufacture, and electroplating industries has resulted in contamination of paddy fields and poses a great challenge to the society be it crops, animals, or human beings. Cr(VI) toxicity results in growth inhibition and leading to changes in components of antioxidant systems as well as secondary metabolites. We evaluated the comparative short and long term effects of Cr(VI) stress on rice plants to explore the plant defense responses against Cr stress. Different assays including the phenolic and flavonoid content evaluation, malondialdehyde (MDA), proline, antioxidant enzyme analysis, and DPPH assay were performed to understand the plant response against the Cr(VI) stress. Total phenols and flavonoids were significantly higher in Cr stressed plants as compared to control groups. Under Cr(VI) exposure, significant higher accumulation of proline was observed. Similarly, high levels of MDA content were also observed after 7 days of Cr stress. In addition, the antioxidant activities such as GST, APX, and SOD including DPPH radical scavenging were also markedly increased during Cr(VI) stress. Further identification and quantification of phenols were done spectrophotometrically to view the whole spectrum of phenolics. HPLC analysis showed gallic acid as the main contributor to abiotic defense response. Our study showed that Cr stress imposes serious toxic effects and plant phenolics have a protective role against metal stress.
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Affiliation(s)
- Sonali Dubey
- Department of Biotechnology, Jaypee Institute of Information Technology, A-10, Sector-62, Noida, Uttar Pradesh, 210307, India
| | - Anubhuti Gupta
- Department of Biotechnology, Jaypee Institute of Information Technology, A-10, Sector-62, Noida, Uttar Pradesh, 210307, India
| | - Aditi Khare
- Department of Biotechnology, Jaypee Institute of Information Technology, A-10, Sector-62, Noida, Uttar Pradesh, 210307, India
| | - Gauransh Jain
- Department of Biotechnology, Jaypee Institute of Information Technology, A-10, Sector-62, Noida, Uttar Pradesh, 210307, India
| | - Sagarika Bose
- Department of Biotechnology, Jaypee Institute of Information Technology, A-10, Sector-62, Noida, Uttar Pradesh, 210307, India
| | - Vibha Rani
- Department of Biotechnology, Jaypee Institute of Information Technology, A-10, Sector-62, Noida, Uttar Pradesh, 210307, India.
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Huang D, Guo X, Peng Z, Zeng G, Xu P, Gong X, Deng R, Xue W, Wang R, Yi H, Liu C. White rot fungi and advanced combined biotechnology with nanomaterials: promising tools for endocrine-disrupting compounds biotransformation. Crit Rev Biotechnol 2017; 38:671-689. [PMID: 29082760 DOI: 10.1080/07388551.2017.1386613] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Abstract
Endocrine-disrupting compounds (EDCs) can interfere with endocrine systems and bio-accumulate through the food chain and even decrease biodiversity in contaminated areas. This review discusses a critical overview of recent research progress in the biotransformation of EDCs (including polychlorinated biphenyl and nonylphenol, and suspected EDCs such as heavy metals and sulfonamide antibiotics) by white rot fungi (WRF) based on techniques with an emphasis on summarizing and analyzing fungal molecular, metabolic and genetic mechanisms. Not only intracellular metabolism which seems to perform essential roles in the ability of WRF to transform EDCs, but also advanced applications are deeply discussed. This review mainly reveals the removal pathway of heavy metal and antibiotic pollutants because the single pollution almost did not exist in a real environment while the combined pollution has become more serious and close to people's life. The trends in WRF technology and its related advanced applications which use the combined technology, including biocatalysis of WRF and adsorption of nanomaterials, to degrade EDCs have also been introduced. Furthermore, challenges and future research needs EDCs biotransformation by WRF are also discussed. This research, referring to metabolic mechanisms and the combined technology of WRF with nanomaterials, undoubtedly contributes to the applications of biotechnology. This review will be of great benefit to an understanding of the trends in biotechnology for the removal of EDCs.
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Affiliation(s)
- Danlian Huang
- a College of Environmental Science and Engineering, Hunan University , Changsha , China.,b Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education , Changsha , China
| | - Xueying Guo
- a College of Environmental Science and Engineering, Hunan University , Changsha , China.,b Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education , Changsha , China
| | - Zhiwei Peng
- a College of Environmental Science and Engineering, Hunan University , Changsha , China.,b Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education , Changsha , China
| | - Guangming Zeng
- a College of Environmental Science and Engineering, Hunan University , Changsha , China.,b Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education , Changsha , China
| | - Piao Xu
- a College of Environmental Science and Engineering, Hunan University , Changsha , China.,b Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education , Changsha , China
| | - Xiaomin Gong
- a College of Environmental Science and Engineering, Hunan University , Changsha , China.,b Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education , Changsha , China
| | - Rui Deng
- a College of Environmental Science and Engineering, Hunan University , Changsha , China.,b Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education , Changsha , China
| | - Wenjing Xue
- a College of Environmental Science and Engineering, Hunan University , Changsha , China.,b Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education , Changsha , China
| | - Rongzhong Wang
- a College of Environmental Science and Engineering, Hunan University , Changsha , China.,b Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education , Changsha , China
| | - Huan Yi
- a College of Environmental Science and Engineering, Hunan University , Changsha , China.,b Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education , Changsha , China
| | - Caihong Liu
- a College of Environmental Science and Engineering, Hunan University , Changsha , China.,b Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education , Changsha , China
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Wężowicz K, Rozpądek P, Turnau K. Interactions of arbuscular mycorrhizal and endophytic fungi improve seedling survival and growth in post-mining waste. MYCORRHIZA 2017; 27:499-511. [PMID: 28317065 PMCID: PMC5486607 DOI: 10.1007/s00572-017-0768-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 03/10/2017] [Indexed: 05/08/2023]
Abstract
The impact of fungal endophytes and the modulating role of arbuscular mycorrhizal fungi (AMF) on the vitality of Verbascum lychnitis, grown in the laboratory in a substratum from a post-mining waste dump was investigated. We report that inoculation with a single endophyte negatively affected the survival rate and biomass production of most of the plant-endophyte consortia examined. The introduction of arbuscular mycorrhiza fungi into this setup (dual inoculation) had a beneficial effect on both biomass yield and survivability. V. lychnitis co-inoculated with AMF and Cochliobolus sativus, Diaporthe sp., and Phoma exigua var. exigua yielded the highest biomass, exceeding the growth rate of both non-inoculated and AMF plants. AMF significantly improved the photosynthesis rates of the plant-endophyte consortia, which were negatively affected by inoculation with single endophytes. The abundance of PsbC, a photosystem II core protein previously shown to be upregulated in plants colonized by Epichloe typhina, exhibited a significant increase when the negative effect of the fungal endophyte was attenuated by AMF.
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Affiliation(s)
- Katarzyna Wężowicz
- Institute of Environmental Sciences, Jagiellonian University, Gronostajowa 7, 30-387, Kraków, Poland
| | - Piotr Rozpądek
- Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7A, 30-387, Kraków, Poland.
| | - Katarzyna Turnau
- Institute of Environmental Sciences, Jagiellonian University, Gronostajowa 7, 30-387, Kraków, Poland
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Berthelot C, Leyval C, Foulon J, Chalot M, Blaudez D. Plant growth promotion, metabolite production and metal tolerance of dark septate endophytes isolated from metal-polluted poplar phytomanagement sites. FEMS Microbiol Ecol 2016; 92:fiw144. [PMID: 27364359 DOI: 10.1093/femsec/fiw144] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/21/2016] [Indexed: 02/07/2023] Open
Abstract
Numerous studies address the distribution and the diversity of dark septate endophytes (DSEs) in the literature, but little is known about their ecological role and their effect on host plants, especially in metal-polluted soils. Seven DSE strains belonging to Cadophora, Leptodontidium, Phialophora and Phialocephala were isolated from roots of poplar trees from metal-polluted sites. All strains developed on a wide range of carbohydrates, including cell-wall-related compounds. The strains evenly colonized birch, eucalyptus and ryegrass roots in re-synthesis experiments. Root and shoot growth promotion was observed and was both plant and strain dependent. Two Phialophora and Leptodontidium strains particularly improved plant growth. However, there was no correlation between the level of root colonization by DSEs and the intensity of growth promotion. All strains produced auxin and six also stimulated plant growth through the release of volatile organic compounds (VOCs). SPME-GC/MS analyses revealed four major VOCs emitted by Cadophora and Leptodontidium The strains exhibited growth at high concentrations of several metals. The ability of metal-resistant DSE strains to produce both soluble and volatile compounds for plant growth promotion indicates interesting microbial resources with high potential to support sustainable production of bioenergy crops within the context of the phytomanagement of metal-contaminated sites.
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Affiliation(s)
- Charlotte Berthelot
- CNRS, LIEC UMR7360, Faculté des Sciences et Technologies, Université de Lorraine, BP 70239, F-54506 Vandoeuvre-lès-Nancy, France LIEC UMR7360, Faculté des Sciences et Technologies, Université de Lorraine, BP 70239, F-54506 Vandoeuvre-lès-Nancy, France
| | - Corinne Leyval
- CNRS, LIEC UMR7360, Faculté des Sciences et Technologies, Université de Lorraine, BP 70239, F-54506 Vandoeuvre-lès-Nancy, France LIEC UMR7360, Faculté des Sciences et Technologies, Université de Lorraine, BP 70239, F-54506 Vandoeuvre-lès-Nancy, France
| | - Julie Foulon
- CNRS, UMR6249 Laboratoire Chrono-Environnement, Pôle Universitaire du Pays de Montbéliard, 4 place Tharradin, BP 71427, F-25211, Montbéliard, France UMR6249 Laboratoire Chrono-Environnement, Université de Bourgogne Franche-Comté, Pôle Universitaire du Pays de Montbéliard, 4 place Tharradin, BP 71427, F-25211, Montbéliard, France
| | - Michel Chalot
- CNRS, UMR6249 Laboratoire Chrono-Environnement, Pôle Universitaire du Pays de Montbéliard, 4 place Tharradin, BP 71427, F-25211, Montbéliard, France UMR6249 Laboratoire Chrono-Environnement, Université de Bourgogne Franche-Comté, Pôle Universitaire du Pays de Montbéliard, 4 place Tharradin, BP 71427, F-25211, Montbéliard, France Faculté des Sciences et Technologies, Université de Lorraine, BP 70239, F-54506, Vandoeuvre-lès-Nancy, France
| | - Damien Blaudez
- CNRS, LIEC UMR7360, Faculté des Sciences et Technologies, Université de Lorraine, BP 70239, F-54506 Vandoeuvre-lès-Nancy, France LIEC UMR7360, Faculté des Sciences et Technologies, Université de Lorraine, BP 70239, F-54506 Vandoeuvre-lès-Nancy, France
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Promising approaches towards biotransformation of polycyclic aromatic hydrocarbons with Ascomycota fungi. Curr Opin Biotechnol 2016; 38:1-8. [DOI: 10.1016/j.copbio.2015.12.002] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 12/07/2015] [Accepted: 12/08/2015] [Indexed: 12/18/2022]
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