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Cai J, Zhou X, Wang B, Zhang X, Luo M, Huang L, Wang R, Chen Y, Li X, Luo Y, Chen G, Cao F, Huang G, Zheng C. Bioactive polyketides and meroterpenoids from the mangrove-derived fungus Talaromyces flavus TGGP35. Front Microbiol 2024; 15:1342843. [PMID: 38362503 PMCID: PMC10867163 DOI: 10.3389/fmicb.2024.1342843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 01/08/2024] [Indexed: 02/17/2024] Open
Abstract
Six new polyketides, which includes three new lactones (talarotones A-C) (1-3), one new polyketide (talarotide A) (4), two new polyenes (talaroyenes A, B) (5, 6), together with one new meroterpenoid (talaropenoid A) (7) and 13 known compounds (8-20) were isolated from the mangrove-derived fungus Talaromyces flavus TGGP35. The structure and configuration of the compounds 1-7 were elucidated from the data obtained from HR-ESI-MS, IR, 1D/2D NMR spectroscopy, Mo2 (OAc)4-induced electronic circular dichroism (ECD), CD spectroscopy, and modified Mosher's method. Compounds 5 and 20 displayed antioxidant activity with IC50 values of 0.40 and 1.36 mM, respectively. Compounds 3, 6, 11, 16, and 17 displayed cytotoxic activity against human cancer cells Hela, A549, and had IC50 values ranging from 28.89 to 62.23 μM. Compounds 7, 10-12, and 14-18 exhibited moderate or potent anti-insect activity against newly hatched larvae of Helicoverpa armigera Hubner, with IC50 values in the range 50-200 μg/mL. Compound 18 showed antibacterial activity against Ralstonia solanacearum with the MIC value of 50 μg/mL.
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Affiliation(s)
- Jin Cai
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou, Hainan, China
| | - Xueming Zhou
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou, Hainan, China
| | - Bin Wang
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou, Hainan, China
| | - Xuelong Zhang
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou, Hainan, China
| | - Mengyao Luo
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou, Hainan, China
| | - Longtao Huang
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou, Hainan, China
| | - Ruoxi Wang
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou, Hainan, China
| | - Yonghao Chen
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou, Hainan, China
| | - Xiaoyang Li
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou, Hainan, China
| | - Youping Luo
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou, Hainan, China
| | - Guangying Chen
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou, Hainan, China
| | - Fei Cao
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnostics of Education Ministry of China, College of Pharmaceutical Sciences, Hebei University, Baoding, China
| | - Guolei Huang
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou, Hainan, China
| | - Caijuan Zheng
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou, Hainan, China
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Contato AG, Borelli TC, Buckeridge MS, Rogers J, Hartson S, Prade RA, Polizeli MDLTDM. Secretome Analysis of Thermothelomyces thermophilus LMBC 162 Cultivated with Tamarindus indica Seeds Reveals CAZymes for Degradation of Lignocellulosic Biomass. J Fungi (Basel) 2024; 10:121. [PMID: 38392793 PMCID: PMC10890306 DOI: 10.3390/jof10020121] [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: 12/11/2023] [Revised: 01/06/2024] [Accepted: 01/11/2024] [Indexed: 02/24/2024] Open
Abstract
The analysis of the secretome allows us to identify the proteins, especially carbohydrate-active enzymes (CAZymes), secreted by different microorganisms cultivated under different conditions. The CAZymes are divided into five classes containing different protein families. Thermothelomyces thermophilus is a thermophilic ascomycete, a source of many glycoside hydrolases and oxidative enzymes that aid in the breakdown of lignocellulosic materials. The secretome analysis of T. thermophilus LMBC 162 cultivated with submerged fermentation using tamarind seeds as a carbon source revealed 79 proteins distributed between the five diverse classes of CAZymes: 5.55% auxiliary activity (AAs); 2.58% carbohydrate esterases (CEs); 20.58% polysaccharide lyases (PLs); and 71.29% glycoside hydrolases (GHs). In the identified GH families, 54.97% are cellulolytic, 16.27% are hemicellulolytic, and 0.05 are classified as other. Furthermore, 48.74% of CAZymes have carbohydrate-binding modules (CBMs). Observing the relative abundance, it is possible to state that only thirteen proteins comprise 92.19% of the identified proteins secreted and are probably the main proteins responsible for the efficient degradation of the bulk of the biomass: cellulose, hemicellulose, and pectin.
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Affiliation(s)
- Alex Graça Contato
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto 14049-900, SP, Brazil
- Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, OK 74078, USA
| | - Tiago Cabral Borelli
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto 14049-901, SP, Brazil
| | - Marcos Silveira Buckeridge
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, São Paulo 05508-090, SP, Brazil
| | - Janet Rogers
- Department of Biochemistry and Molecular Biology, Oklahoma State University, Stillwater, OK 74078, USA
| | - Steven Hartson
- Department of Biochemistry and Molecular Biology, Oklahoma State University, Stillwater, OK 74078, USA
| | - Rolf Alexander Prade
- Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, OK 74078, USA
| | - Maria de Lourdes Teixeira de Moraes Polizeli
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto 14049-900, SP, Brazil
- Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto 14040-901, SP, Brazil
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Lu H, Xue M, Nie X, Luo H, Tan Z, Yang X, Shi H, Li X, Wang T. Glycoside hydrolases in the biodegradation of lignocellulosic biomass. 3 Biotech 2023; 13:402. [PMID: 37982085 PMCID: PMC10654287 DOI: 10.1007/s13205-023-03819-1] [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: 09/04/2023] [Accepted: 10/15/2023] [Indexed: 11/21/2023] Open
Abstract
Lignocellulose is a plentiful and intricate biomass substance made up of cellulose, hemicellulose, and lignin. Cellulose and hemicellulose are polysaccharides characterized by different compositions and degrees of polymerization. As renewable resources, their applications are eco-friendly and can help reduce reliance on petrochemical resources. This review aims to illustrate cellulose, hemicellulose, and their structures and hydrolytic enzymes. To obtain desirable enzyme sources for the high hydrolysis of lignocellulose, highly stable, efficient and thermophilic enzyme sources, and new technologies, such as rational design and machine learning, have been introduced in detail. Generally, the efficient biodegradation of abundant natural biomass into fermentable sugars or other intermediates has great potential in practical applications. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-023-03819-1.
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Affiliation(s)
- Honglin Lu
- Faculty of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003 China
| | - Maoyuan Xue
- Faculty of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003 China
| | - Xinling Nie
- Faculty of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003 China
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037 China
| | - Hongzheng Luo
- Faculty of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003 China
| | - Zhongbiao Tan
- Faculty of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003 China
| | - Xiao Yang
- Department of Poultry Science, The University of Georgia, Athens, GA 30602 USA
| | - Hao Shi
- Faculty of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003 China
| | - Xun Li
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037 China
| | - Tao Wang
- Department of Microbiology, The University of Georgia, Athens, GA 30602 USA
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Méndez-Líter JA, de Eugenio LI, Nieto-Domínguez M, Prieto A, Martínez MJ. Expression and Characterization of Two α-l-Arabinofuranosidases from Talaromyces amestolkiae: Role of These Enzymes in Biomass Valorization. Int J Mol Sci 2023; 24:11997. [PMID: 37569374 PMCID: PMC10418624 DOI: 10.3390/ijms241511997] [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: 06/30/2023] [Revised: 07/19/2023] [Accepted: 07/24/2023] [Indexed: 08/13/2023] Open
Abstract
α-l-arabinofuranosidases are glycosyl hydrolases that catalyze the break between α-l-arabinofuranosyl substituents or between α-l-arabinofuranosides and xylose from xylan or xylooligosaccharide backbones. While they belong to several glycosyl hydrolase (GH) families, there are only 24 characterized GH62 arabinofuranosidases, making them a small and underrepresented group, with many of their features remaining unknown. Aside from their applications in the food industry, arabinofuranosidases can also aid in the processing of complex lignocellulosic materials, where cellulose, hemicelluloses, and lignin are closely linked. These materials can be fully converted into sugar monomers to produce secondary products like second-generation bioethanol. Alternatively, they can be partially hydrolyzed to release xylooligosaccharides, which have prebiotic properties. While endoxylanases and β-xylosidases are also necessary to fully break down the xylose backbone from xylan, these enzymes are limited when it comes to branched polysaccharides. In this article, two new GH62 α-l-arabinofuranosidases from Talaromyces amestolkiae (named ARA1 and ARA-2) have been heterologously expressed and characterized. ARA-1 is more sensitive to changes in pH and temperature, whereas ARA-2 is a robust enzyme with wide pH and temperature tolerance. Both enzymes preferentially act on arabinoxylan over arabinan, although ARA-1 has twice the catalytic efficiency of ARA-2 on this substrate. The production of xylooligosaccharides from arabinoxylan catalyzed by a T. amestolkiae endoxylanase was significantly increased upon pretreatment of the polysaccharide with ARA-1 or ARA-2, with the highest synergism values reported to date. Finally, both enzymes (ARA-1 or ARA-2 and endoxylanase) were successfully applied to enhance saccharification by combining them with a β-xylosidase already characterized from the same fungus.
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Affiliation(s)
- Juan A. Méndez-Líter
- Department of Microbial & Plant Biotechnology, Centro de Investigaciones Biológicas Margarita Salas, Spanish National Research Council (CSIC), C/Ramiro de Maeztu 9, 28040 Madrid, Spain; (J.A.M.-L.); (L.I.d.E.)
| | - Laura I. de Eugenio
- Department of Microbial & Plant Biotechnology, Centro de Investigaciones Biológicas Margarita Salas, Spanish National Research Council (CSIC), C/Ramiro de Maeztu 9, 28040 Madrid, Spain; (J.A.M.-L.); (L.I.d.E.)
| | - Manuel Nieto-Domínguez
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Kongens Lyngby, Denmark;
| | - Alicia Prieto
- Department of Microbial & Plant Biotechnology, Centro de Investigaciones Biológicas Margarita Salas, Spanish National Research Council (CSIC), C/Ramiro de Maeztu 9, 28040 Madrid, Spain; (J.A.M.-L.); (L.I.d.E.)
| | - María Jesús Martínez
- Department of Microbial & Plant Biotechnology, Centro de Investigaciones Biológicas Margarita Salas, Spanish National Research Council (CSIC), C/Ramiro de Maeztu 9, 28040 Madrid, Spain; (J.A.M.-L.); (L.I.d.E.)
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Zou Y, Liu M, Lai Y, Liu X, Li X, Li Y, Tang Q, Xu W. The glycoside hydrolase gene family profile and microbial function of Debaryomyces hansenii Y4 during South-road dark tea fermentation. Front Microbiol 2023; 14:1229251. [PMID: 37502404 PMCID: PMC10369063 DOI: 10.3389/fmicb.2023.1229251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 06/26/2023] [Indexed: 07/29/2023] Open
Abstract
Microbes are crucial to the quality formation of Sichuan South-road Dark Tea (SSDT) during pile-fermentation, but their mechanism of action has not yet been elucidated. Here, the glycoside hydrolase (GH) gene family and microbial function of Debaryomyces hansenii Y4 during solid-state fermentation were analyzed, and the results showed that many GH genes being distributed in comparatively abundant GH17, GH18, GH76, GH31, GH47, and GH2 were discovered in D. hansenii. They encoded beta-galactosidase, alpha-D-galactoside galactohydrolase, alpha-xylosidase, mannosidase, etc., and most of the GHs were located in the exocellular space and participated in the degradation of polysaccharides and oligosaccharides. D. hansenii Y4 could develop the mellow mouthfeel and "reddish brown" factors of SSDT via increasing the levels of water extracts, soluble sugars and amino acids but decreasing the tea polyphenols and caffeine levels, combined with altering the levels of thearubiins and brown index. It may facilitate the isomerization between epicatechin gallate and catechin gallate. Moreover, the expression levels of DEHA2G24860g (Beta-galactosidase gene) and DEHA2G08602g (Mannan endo-1,6-alpha-mannosidase DFG5 gene) were sharply up-regulated in fermentative anaphase, and they were significantly and negatively correlated with epicatechin content, especially, the expression of DEHA2G08602g was significantly and negatively correlated with catechin gallate level. It was hypothesized that D. hansenii Y4 is likely to be an important functional microbe targeting carbohydrate destruction and catechin transformation during SSDT pile-fermentation, with DEHA2G08602g as a key thermotolerant functional gene.
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Affiliation(s)
- Yao Zou
- Department of Tea Science, College of Horticulture, Sichuan Agricultural University, Chengdu, China
- Tea Refining and Innovation Key Laboratory of Sichuan Province, Chengdu, China
| | - Minqiang Liu
- Department of Tea Science, College of Horticulture, Sichuan Agricultural University, Chengdu, China
- Tea Refining and Innovation Key Laboratory of Sichuan Province, Chengdu, China
| | - Yuqing Lai
- Department of Tea Science, College of Horticulture, Sichuan Agricultural University, Chengdu, China
- Tea Refining and Innovation Key Laboratory of Sichuan Province, Chengdu, China
| | - Xuyi Liu
- Department of Tea Science, College of Horticulture, Sichuan Agricultural University, Chengdu, China
- Tea Refining and Innovation Key Laboratory of Sichuan Province, Chengdu, China
| | - Xian Li
- Department of Tea Science, College of Horticulture, Sichuan Agricultural University, Chengdu, China
- Tea Refining and Innovation Key Laboratory of Sichuan Province, Chengdu, China
| | - Yimiao Li
- Department of Tea Science, College of Horticulture, Sichuan Agricultural University, Chengdu, China
- Tea Refining and Innovation Key Laboratory of Sichuan Province, Chengdu, China
| | - Qian Tang
- Department of Tea Science, College of Horticulture, Sichuan Agricultural University, Chengdu, China
- Tea Refining and Innovation Key Laboratory of Sichuan Province, Chengdu, China
| | - Wei Xu
- Department of Tea Science, College of Horticulture, Sichuan Agricultural University, Chengdu, China
- Tea Refining and Innovation Key Laboratory of Sichuan Province, Chengdu, China
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Fungal–Lactobacteria Consortia and Enzymatic Catalysis for Polylactic Acid Production. J Fungi (Basel) 2023; 9:jof9030342. [PMID: 36983510 PMCID: PMC10059961 DOI: 10.3390/jof9030342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/08/2023] [Accepted: 03/08/2023] [Indexed: 03/14/2023] Open
Abstract
Polylactic acid (PLA) is the main biobased plastic manufactured on an industrial scale. This polymer is synthetized by chemical methods, and there is a strong demand for the implementation of clean technologies. This work focuses on the microbial fermentation of agro-industrial waste rich in starch for the production of lactic acid (LA) in a consolidated bioprocess, followed by the enzymatic synthesis of PLA. Lactic acid bacteria (LAB) and the fungus Rhizopus oryzae were evaluated as natural LA producers in pure cultures or in fungal–lactobacteria co-cultures formed by an LAB and a fungus selected for its metabolic capacity to degrade starch and to form consortia with LAB. Microbial interaction was analyzed by scanning electron microscopy and biofilm production was quantified. The results show that the fungus Talaromyces amestolkiae and Lactiplantibacillus plantarum M9MG6-B2 establish a cooperative relationship to exploit the sugars from polysaccharides provided as carbon sources. Addition of the quorum sensing molecule dodecanol induced LA metabolism of the consortium and resulted in improved cooperation, producing 99% of the maximum theoretical yield of LA production from glucose and 65% from starch. Finally, l-PLA oligomers (up to 19-LA units) and polymers (greater than 5 kDa) were synthetized by LA polycondensation and enzymatic ring-opening polymerization catalyzed by the non-commercial lipase OPEr, naturally produced by the fungus Ophiostoma piceae.
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Wang S, Chen S, Wang B, Li Q, Zu J, Yu J, Ding Z, Zhou F. Screening of endophytic fungi from Cremastra appendiculata and their potential for plant growth promotion and biological control. Folia Microbiol (Praha) 2023; 68:121-133. [PMID: 35982376 DOI: 10.1007/s12223-022-00995-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 07/21/2022] [Indexed: 11/27/2022]
Abstract
Biocontrol fungi are widely used to promote plant growth and pest control. Four fungi were isolated from Cremastra appendiculata tubers and screened for plant growth-promoting and antagonistic effects. Based on the morphological characterization and ITS, 18S rRNA and 28S rRNA gene sequencing analysis, the fungi were identified to be related to Colletotrichum gloeosporioides (DJL-6), Trichoderma tomentosum (DJL-9), Colletotrichum godetiae (DJL-10) and Talaromyces amestolkiae (DJL-15). The growth inhibition tests showed that the four isolates had different inhibitory effects on Colletotrichum fructicola, Alternaria alternata and Alternaria longipes, among which DJL-9 showed the highest inhibitory activity. Their culture filtrates (especially that of DJL-15) can also inhibit pathogens. Four isolates were positive for the production of indole-3-acid (IAA) and β-1,3-glucanase and possessed proteolytic activity but were negative for the production of iron siderophore complexes. The four fungi showed strong nitrogen fixation and potassium dissolution abilities. In addition to DJL-9 being able to solubilize phosphate, DJL-10 was able to produce chitinase and cellulase. Pot experiments indicated that the four fungi increased the germination rate of C. appendiculata and soybean seeds and increased soybean radicle growth and plant biomass. Among them, DJL-6 had a better growth-promoting effect. Therefore, we successfully screened the biocontrol potential of endophytes from C. appendiculata, with a focus on preventing fungal diseases and promoting plant growth, and selected strains that could provide nutrients and hormones for plant growth.
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Affiliation(s)
- Siyu Wang
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, 310053, China
| | - Senmiao Chen
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, 310053, China
| | - Bixu Wang
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, 310053, China
| | - Qianxi Li
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, 310053, China
| | - Jiaqi Zu
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, 310053, China
| | - Jie Yu
- Puer Kunhong Biotechnology Company, Group C of Chamagu Town A, Simao District, Puer, Yunnan, 665000, China
| | - Zhishan Ding
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, 310053, China
| | - Fangmei Zhou
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, 310053, China.
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Synthesis and Characterization of a Novel Resveratrol Xylobioside Obtained Using a Mutagenic Variant of a GH10 Endoxylanase. Antioxidants (Basel) 2022; 12:antiox12010085. [PMID: 36670947 PMCID: PMC9855058 DOI: 10.3390/antiox12010085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/20/2022] [Accepted: 12/27/2022] [Indexed: 12/31/2022] Open
Abstract
Resveratrol is a natural polyphenol with antioxidant activity and numerous health benefits. However, in vivo application of this compound is still a challenge due to its poor aqueous solubility and rapid metabolism, which leads to an extremely low bioavailability in the target tissues. In this work, rXynSOS-E236G glycosynthase, designed from a GH10 endoxylanase of the fungus Talaromyces amestolkiae, was used to glycosylate resveratrol by using xylobiosyl-fluoride as a sugar donor. The major product from this reaction was identified by NMR as 3-O-ꞵ-d-xylobiosyl resveratrol, together with other glycosides produced in a lower amount as 4'-O-ꞵ-d-xylobiosyl resveratrol and 3-O-ꞵ-d-xylotetraosyl resveratrol. The application of response surface methodology made it possible to optimize the reaction, producing 35% of 3-O-ꞵ-d-xylobiosyl resveratrol. Since other minor glycosides are obtained in addition to this compound, the transformation of the phenolic substrate amounted to 70%. Xylobiosylation decreased the antioxidant capacity of resveratrol by 2.21-fold, but, in return, produced a staggering 4,866-fold improvement in solubility, facilitating the delivery of large amounts of the molecule and its transit to the colon. A preliminary study has also shown that the colonic microbiota is capable of releasing resveratrol from 3-O-ꞵ-d-xylobiosyl resveratrol. These results support the potential of mutagenic variants of glycosyl hydrolases to synthesize highly soluble resveratrol glycosides, which could, in turn, improve the bioavailability and bioactive properties of this polyphenol.
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New Meroterpenoid and Isocoumarins from the Fungus Talaromyces amestolkiae MST1-15 Collected from Coal Area. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238223. [PMID: 36500326 PMCID: PMC9741378 DOI: 10.3390/molecules27238223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/11/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022]
Abstract
Three new compounds including a meroterpenoid (1) and two isocoumarins (8 and 9), together with thirteen known compounds (2-7, 10-16) were isolated from the metabolites of Talaromyces amestolkiae MST1-15. Their structures were identified by a combination of spectroscopic analysis. The absolute configuration of compound 1 was elucidated on the basis of experimental and electronic circular dichroism calculation, and compounds 8 and 9 were determined by Mo2(OAc)4-induced circular dichroism experiments. Compounds 7-16 showed weak antibacterial activities against Stenotrophomonas maltophilia with MIC values ranging from 128 to 512 μg/mL (MICs of ceftriaxone sodium and levofloxacin were 128 and 0.25 μg/mL, respectively).
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Méndez-Líter JA, Pozo-Rodríguez A, Madruga E, Rubert M, Santana AG, de Eugenio LI, Sánchez C, Martínez A, Prieto A, Martínez MJ. Glycosylation of Epigallocatechin Gallate by Engineered Glycoside Hydrolases from Talaromyces amestolkiae: Potential Antiproliferative and Neuroprotective Effect of These Molecules. Antioxidants (Basel) 2022; 11:antiox11071325. [PMID: 35883816 PMCID: PMC9312355 DOI: 10.3390/antiox11071325] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/24/2022] [Accepted: 06/30/2022] [Indexed: 02/04/2023] Open
Abstract
Glycoside hydrolases (GHs) are enzymes that hydrolyze glycosidic bonds, but some of them can also catalyze the synthesis of glycosides by transglycosylation. However, the yields of this reaction are generally low since the glycosides formed end up being hydrolyzed by these same enzymes. For this reason, mutagenic variants with null or drastically reduced hydrolytic activity have been developed, thus enhancing their synthetic ability. Two mutagenic variants, a glycosynthase engineered from a β-glucosidase (BGL-1-E521G) and a thioglycoligase from a β-xylosidase (BxTW1-E495A), both from the ascomycete Talaromyces amestolkiae, were used to synthesize three novel epigallocatechin gallate (EGCG) glycosides. EGCG is a phenolic compound from green tea known for its antioxidant effects and therapeutic benefits, whose glycosylation could increase its bioavailability and improve its bioactive properties. The glycosynthase BGL-1-E521G produced a β-glucoside and a β-sophoroside of EGCG, while the thioglycoligase BxTW1-E495A formed the β-xyloside of EGCG. Glycosylation occurred in the 5″ and 4″ positions of EGCG, respectively. In this work, the reaction conditions for glycosides’ production were optimized, achieving around 90% conversion of EGCG with BGL-1-E521G and 60% with BxTW1-E495A. The glycosylation of EGCG caused a slight loss of its antioxidant capacity but notably increased its solubility (between 23 and 44 times) and, in the case of glucoside, also improved its thermal stability. All three glycosides showed better antiproliferative properties on breast adenocarcinoma cell line MDA-MB-231 than EGCG, and the glucosylated and sophorylated derivatives induced higher neuroprotection, increasing the viability of SH-S5Y5 neurons exposed to okadaic acid.
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Affiliation(s)
- Juan A. Méndez-Líter
- Centro de Investigaciones Biológicas Margarita Salas, Department of Microbial and Plant Biotechnology, Spanish National Research Council (CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain; (J.A.M.-L.); (A.P.-R.); (L.I.d.E.); (A.P.)
| | - Ana Pozo-Rodríguez
- Centro de Investigaciones Biológicas Margarita Salas, Department of Microbial and Plant Biotechnology, Spanish National Research Council (CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain; (J.A.M.-L.); (A.P.-R.); (L.I.d.E.); (A.P.)
| | - Enrique Madruga
- Centro de Investigaciones Biológicas Margarita Salas, Department of Structural and Chemical Biology, Spanish National Research Council (CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain; (E.M.); (A.M.)
| | - María Rubert
- Department of Biochemistry and Molecular Biology, School of Biology, Instituto de Investigación Hospital 12 de Octubre, Universidad Complutense de Madrid, C/de José Antonio Nováis 12, 28040 Madrid, Spain; (M.R.); (C.S.)
| | - Andrés G. Santana
- Department of Bioorganic Chemistry, Instituto de Química Orgánica General, Spanish National Research Council (CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain;
| | - Laura I. de Eugenio
- Centro de Investigaciones Biológicas Margarita Salas, Department of Microbial and Plant Biotechnology, Spanish National Research Council (CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain; (J.A.M.-L.); (A.P.-R.); (L.I.d.E.); (A.P.)
| | - Cristina Sánchez
- Department of Biochemistry and Molecular Biology, School of Biology, Instituto de Investigación Hospital 12 de Octubre, Universidad Complutense de Madrid, C/de José Antonio Nováis 12, 28040 Madrid, Spain; (M.R.); (C.S.)
| | - Ana Martínez
- Centro de Investigaciones Biológicas Margarita Salas, Department of Structural and Chemical Biology, Spanish National Research Council (CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain; (E.M.); (A.M.)
| | - Alicia Prieto
- Centro de Investigaciones Biológicas Margarita Salas, Department of Microbial and Plant Biotechnology, Spanish National Research Council (CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain; (J.A.M.-L.); (A.P.-R.); (L.I.d.E.); (A.P.)
| | - María Jesús Martínez
- Centro de Investigaciones Biológicas Margarita Salas, Department of Microbial and Plant Biotechnology, Spanish National Research Council (CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain; (J.A.M.-L.); (A.P.-R.); (L.I.d.E.); (A.P.)
- Correspondence:
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Su X, Meng F, Liu Y, Jiang W, Wang Z, Wu L, Guo X, Yao X, Wu J, Sun Z, Zha L, Gui S, Peng D, Xing S. Molecular Cloning and Functional Characterization of a β-Glucosidase Gene to Produce Platycodin D in Platycodon grandiflorus. FRONTIERS IN PLANT SCIENCE 2022; 13:955628. [PMID: 35860532 PMCID: PMC9289601 DOI: 10.3389/fpls.2022.955628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 06/16/2022] [Indexed: 06/15/2023]
Abstract
Platycodin D (PD) is a deglycosylated triterpene saponin with much higher pharmacological activity than glycosylated platycoside E (PE). Extensive studies in vitro showed that the transformation of platycoside E to platycodin D can be achieved using β-glucosidase extracted from several bacteria. However, whether similar enzymes in Platycodon grandiflorus could convert platycoside E to platycodin D, as well as the molecular mechanism underlying the deglycosylation process of platycodon E, remain unclear. Here, we identified a β-glucosidase in P. grandiflorus from our previous RNA-seq analysis, with a full-length cDNA of 1,488 bp encoding 495 amino acids. Bioinformatics and phylogenetic analyses showed that β-glucosidases in P. grandiflorus have high homology with other plant β-glucosidases. Subcellular localization showed that there is no subcellular preference for its encoding gene. β-glucosidase was successfully expressed as 6 × His-tagged fusion protein in Escherichia coli BL21 (DE3). Western blot analysis yielded a recombinant protein of approximately 68 kDa. In vitro enzymatic reactions determined that β-glucosidase was functional and could convert PE to PD. RT-qPCR analysis showed that the expression level of β-glucosidase was higher at night than during the day, with the highest expression level between 9:00 and 12:00 at night. Analysis of the promoter sequence showed many light-responsive cis-acting elements, suggesting that the light might regulate the gene. The results will contribute to the further study of the biosynthesis and metabolism regulation of triterpenoid saponins in P. grandiflorus.
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Affiliation(s)
- Xinglong Su
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Institute of Traditional Chinese Medicine Resources Protection and Development, Anhui Academy of Chinese Medicine, Hefei, China
| | - Fei Meng
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Yingying Liu
- College of Humanities and International Education Exchange, Anhui University of Chinese Medicine, Hefei, China
| | - Weimin Jiang
- College of Life Sciences and Environment, Hengyang Normal University, Hengyang, China
| | - Zhaojian Wang
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Liping Wu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Xiaohu Guo
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Xiaoyan Yao
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Jing Wu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Zongping Sun
- Engineering Technology Research Center of Anti-aging, Chinese Herbal Medicine, Fuyang Normal University, Fuyang, China
| | - Liangping Zha
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Institute of Traditional Chinese Medicine Resources Protection and Development, Anhui Academy of Chinese Medicine, Hefei, China
| | - Shuangying Gui
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Pharmaceutical Preparation Technology and Application, Anhui University of Chinese Medicine, Hefei, China
| | - Daiyin Peng
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Institute of Traditional Chinese Medicine Resources Protection and Development, Anhui Academy of Chinese Medicine, Hefei, China
- MOE-Anhui, Joint Collaborative Innovation Center for Quality Improvement of Anhui Genuine Chinese Medicinal Materials, Hefei, China
| | - Shihai Xing
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Institute of Traditional Chinese Medicine Resources Protection and Development, Anhui Academy of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Research and Development of Chinese Medicine, Anhui University of Chinese Medicine, Hefei, China
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Barbieri GS, Bento HBS, de Oliveira F, Picheli FP, Dias LM, Masarin F, Santos-Ebinuma VC. Xylanase Production by Talaromyces amestolkiae Valuing Agroindustrial Byproducts. BIOTECH 2022; 11:biotech11020015. [PMID: 35822788 PMCID: PMC9264394 DOI: 10.3390/biotech11020015] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 05/11/2022] [Accepted: 05/12/2022] [Indexed: 11/28/2022] Open
Abstract
In general, agroindustrial byproducts can be easily assimilated by several microorganisms due to their composition, which is rich in carbohydrates. Therefore, they could be appropriate for use as raw materials in a sustainable refinery concept, including the production of hydrolytic enzymes with industrial applicability. In this work, xylanase production by the filamentous fungi Talaromyces amestolkiae in submerged culture was evaluated using five agroindustrial byproducts, namely, wheat bran, citrus pulp, rice bran, peanut skin, and peanut shell. Firstly, the aforementioned byproducts were characterized in terms of cellulose, xylan, lignin, and extractives. Next, production studies were performed, and wheat bran generated the highest enzymatic activity (5.4 U·mL−1), probably because of its large amount of xylan. Subsequently, a factorial design was performed to evaluate the independent variables yeast extract, wheat bran, K2HPO4, and pH, aiming to improve the variable response, xylanase activity. The condition that promoted the highest production, 13.02 U·mL−1 (141% higher than the initial condition), was 20 g·L−1 wheat bran, 2.5 g·L−1 yeast extract, 3 g·L−1 K2HPO4, and pH 7. Thus, industrial byproducts with a high content of xylan can be used as a culture medium to produce xylanase enzymes with a Talaromyces strain through an economical and sustainable approach.
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A Fungal Versatile GH10 Endoxylanase and Its Glycosynthase Variant: Synthesis of Xylooligosaccharides and Glycosides of Bioactive Phenolic Compounds. Int J Mol Sci 2022; 23:ijms23031383. [PMID: 35163307 PMCID: PMC8836076 DOI: 10.3390/ijms23031383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 01/20/2022] [Accepted: 01/22/2022] [Indexed: 02/01/2023] Open
Abstract
The study of endoxylanases as catalysts to valorize hemicellulosic residues and to obtain glycosides with improved properties is a topic of great industrial interest. In this work, a GH10 β-1,4-endoxylanase (XynSOS), from the ascomycetous fungus Talaromyces amestolkiae, has been heterologously produced in Pichia pastoris, purified, and characterized. rXynSOS is a highly glycosylated monomeric enzyme of 53 kDa that contains a functional CBM1 domain and shows its optimal activity on azurine cross-linked (AZCL)-beechwood xylan at 70 °C and pH 5. Substrate specificity and kinetic studies confirmed its versatility and high affinity for beechwood xylan and wheat arabinoxylan. Moreover, rXynSOS was capable of transglycosylating phenolic compounds, although with low efficiencies. For expanding its synthetic capacity, a glycosynthase variant of rXynSOS was developed by directed mutagenesis, replacing its nucleophile catalytic residue E236 by a glycine (rXynSOS-E236G). This novel glycosynthase was able to synthesize β-1,4-xylooligosaccharides (XOS) of different lengths (four, six, eight, and ten xylose units), which are known to be emerging prebiotics. rXynSOS-E236G was also much more active than the native enzyme in the glycosylation of a broad range of phenolic compounds with antioxidant properties. The interesting capabilities of rXynSOS and its glycosynthase variant make them promising tools for biotechnological applications.
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Méndez-Líter JA, Ayuso-Fernández I, Csarman F, de Eugenio LI, Míguez N, Plou FJ, Prieto A, Ludwig R, Martínez MJ. Lytic Polysaccharide Monooxygenase from Talaromyces amestolkiae with an Enigmatic Linker-like Region: The Role of This Enzyme on Cellulose Saccharification. Int J Mol Sci 2021; 22:13611. [PMID: 34948409 PMCID: PMC8703934 DOI: 10.3390/ijms222413611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/14/2021] [Accepted: 12/16/2021] [Indexed: 11/30/2022] Open
Abstract
The first lytic polysaccharide monooxygenase (LPMO) detected in the genome of the widespread ascomycete Talaromyces amestolkiae (TamAA9A) has been successfully expressed in Pichia pastoris and characterized. Molecular modeling of TamAA9A showed a structure similar to those from other AA9 LPMOs. Although fungal LPMOs belonging to the genera Penicillium or Talaromyces have not been analyzed in terms of regioselectivity, phylogenetic analyses suggested C1/C4 oxidation which was confirmed by HPAEC. To ascertain the function of a C-terminal linker-like region present in the wild-type sequence of the LPMO, two variants of the wild-type enzyme, one without this sequence and one with an additional C-terminal carbohydrate binding domain (CBM), were designed. The three enzymes (native, without linker and chimeric variant with a CBM) were purified in two chromatographic steps and were thermostable and active in the presence of H2O2. The transition midpoint temperature of the wild-type LPMO (Tm = 67.7 °C) and its variant with only the catalytic domain (Tm = 67.6 °C) showed the highest thermostability, whereas the presence of a CBM reduced it (Tm = 57.8 °C) and indicates an adverse effect on the enzyme structure. Besides, the potential of the different T. amestolkiae LPMO variants for their application in the saccharification of cellulosic and lignocellulosic materials was corroborated.
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Affiliation(s)
- Juan Antonio Méndez-Líter
- Department of Microbial and Plant Biotechnology, Centro de Investigaciones Biológicas Margarita Salas, Spanish National Research Council (CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain; (J.A.M.-L.); (L.I.d.E.); (A.P.)
| | - Iván Ayuso-Fernández
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), 1462 Ås, Norway;
| | - Florian Csarman
- Department of Food Science and Technology, BOKU–University of Natural Resources and Life Sciences, Muthgasse 11, 1190 Vienna, Austria; (F.C.); (R.L.)
| | - Laura Isabel de Eugenio
- Department of Microbial and Plant Biotechnology, Centro de Investigaciones Biológicas Margarita Salas, Spanish National Research Council (CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain; (J.A.M.-L.); (L.I.d.E.); (A.P.)
| | - Noa Míguez
- Instituto de Catálisis y Petroleoquímica, Spanish National Research Council (CSIC), Marie Curie 2, 28049 Madrid, Spain; (N.M.); (F.J.P.)
| | - Francisco J. Plou
- Instituto de Catálisis y Petroleoquímica, Spanish National Research Council (CSIC), Marie Curie 2, 28049 Madrid, Spain; (N.M.); (F.J.P.)
| | - Alicia Prieto
- Department of Microbial and Plant Biotechnology, Centro de Investigaciones Biológicas Margarita Salas, Spanish National Research Council (CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain; (J.A.M.-L.); (L.I.d.E.); (A.P.)
| | - Roland Ludwig
- Department of Food Science and Technology, BOKU–University of Natural Resources and Life Sciences, Muthgasse 11, 1190 Vienna, Austria; (F.C.); (R.L.)
| | - María Jesús Martínez
- Department of Microbial and Plant Biotechnology, Centro de Investigaciones Biológicas Margarita Salas, Spanish National Research Council (CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain; (J.A.M.-L.); (L.I.d.E.); (A.P.)
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