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Motoda T, Chen FC, Tsuyama T, Tokumoto Y, Kijidani Y, Kamei I. Upregulation of MAP kinase HOG1 gene of white-rot fungus Phlebia sp. MG-60 inhibits the ethanol fermentation and mycelial growth. Biosci Biotechnol Biochem 2023; 87:217-227. [PMID: 36610726 DOI: 10.1093/bbb/zbac203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 11/17/2022] [Indexed: 01/09/2023]
Abstract
Wood biomass conversion for fossil resource replacement could result in the sustainable production of chemicals, although lignin represents an obstacle to efficient polysaccharide use. White-rot fungus Phlebia sp. MG-60 reportedly selectively and aerobically degrades lignin in hardwood, then it begins cellulose saccharification from the delignified wood to produce ethanol. Environmental conditions might change white-rot fungi-driven biomass conversion. However, how the environmental response sensor affects ethanol fermentation in white-rot fungi remains elusive. In this study, we focused on MGHOG1, the yeast Hog1 homolog in Phlebia sp. MG-60, a presumably important player in osmoresponse. We generated MGHOG1 overexpressing (OE) transformants in Phlebia sp. MG-60, exhibiting slower mycelial growth compared with the wild-type under salinity stress. MGHOG1 overexpressing liquid cultures displayed suppressed mycelial growth and ethanol fermentation. Therefore, MGHOG1 potentially influences ethanol fermentation and mycelial growth in Phlebia sp. MG-60. This study provides novel insights into the regulation of white-rot fungi-mediated biomass conversion.
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Affiliation(s)
- Taichi Motoda
- Interdisciplinary Graduate School of Agriculture and Engineering, University of Miyazaki, Miyazaki, Japan
| | - Fu-Chia Chen
- Interdisciplinary Graduate School of Agriculture and Engineering, University of Miyazaki, Miyazaki, Japan
| | - Taku Tsuyama
- Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan
| | - Yuji Tokumoto
- Institute for Tenure Track Promotion, University of Miyazaki, Miyazaki, Japan
| | - Yoshio Kijidani
- Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan
| | - Ichiro Kamei
- Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan
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Wang F, Ge X, Yuan Z, Zhang X, Chu X, Lu F, Liu Y. Insights into the mechanism for the high-alkaline activity of a novel GH43 β-xylosidase from Bacillus clausii with a promising application to produce xylose. Bioorg Chem 2022; 126:105887. [DOI: 10.1016/j.bioorg.2022.105887] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/09/2022] [Accepted: 05/18/2022] [Indexed: 11/28/2022]
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Yamasaki F, Nakazawa T, Oh M, Bao D, Kawauchi M, Sakamoto M, Honda Y. Gene targeting of dikaryotic Pleurotus ostreatus nuclei using the CRISPR/Cas9 system. FEMS Microbiol Lett 2022; 369:6674758. [PMID: 36001999 DOI: 10.1093/femsle/fnac083] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 08/07/2022] [Accepted: 08/22/2022] [Indexed: 11/14/2022] Open
Abstract
Clustered regularly interspaced short palindromic repeat (CRISPR)/CRISPR-associated protein 9 (Cas9)-assisted gene targeting is a promising method used in molecular breeding. We recently reported the successful introduction of this method in the monokaryotic Pleurotus ostreatus (oyster mushroom), PC9. However, considering their application in mushroom breeding, dikaryotic strains (with targeted gene mutations in both nuclei) need to be generated. This is laborious and time-consuming because a classical crossing technique is used. Herein, we report a technique that targets both nuclei of dikaryotic P. ostreatus, PC9×#64 in a transformation experiment using plasmid-based CRISPR/Cas9, with the aim of developing a method for efficient and rapid molecular breeding. As an example, we targeted strains with low basidiospore production ability through the meiosis-related genes mer3 or msh4. Four different plasmids containing expression cassettes for Cas9 and two different gRNAs targeting mer3 or msh4 were constructed and separately introduced into PC9×#64. Eight of the 38 dikaryotic transformants analyzed produced no basidiospores. Genomic PCR suggested that msh4 or mer3 mutations were introduced into both nuclei of seven out of eight strains. Thus, in this study, we demonstrated simultaneous gene targeting using our CRISPR/Cas9 system, which may be useful for the molecular breeding of cultivated agaricomycetes.
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Affiliation(s)
- Fuga Yamasaki
- Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Takehito Nakazawa
- Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Minji Oh
- Mushroom division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Bisan-ro, Eumseong-gun, Chungcheongbuk-do, 22709, Republic of Korea
| | - Dapeng Bao
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Moriyuki Kawauchi
- Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Masahiro Sakamoto
- Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Yoichi Honda
- Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
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Kamei I, Uchida K, Ardianti V. Conservation of Xylose Fermentability in Phlebia Species and Direct Fermentation of Xylan by Selected Fungi. Appl Biochem Biotechnol 2020; 192:895-909. [PMID: 32607899 DOI: 10.1007/s12010-020-03375-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 06/22/2020] [Indexed: 12/30/2022]
Abstract
In efforts to lower the cost of total conversion of lignocellulosic materials, utilization of hemicellulose must be considered. White-rot fungus Phlebia sp. MG-60 can produce ethanol directly from cellulose and has fermentation ability for glucose, cellulose, and xylose. Therefore, white-rot fungi can be considered a good candidate for consolidated bioprocessing to give bioethanol from lignocellulosic biomass, although little information is available on the direct fermentation of xylan. In the present study, some Phlebia species were selected as candidates because of their ability to ferment xylose to ethanol more efficiently than Phlebia sp. MG-60. This process indicated that the basidiomycetes that can produce ethanol from xylose are closely related genetically within the Phlebia genus. The selected Phlebia species showed higher ethanol productivity from corn core and beechwood xylans than Phlebia sp. MG-60. The ethanol yields from corn core xylan in culture with Phlebia acerina HHB11146, Phlebia ludoviciana HHB9640, and Phlebia subochracea HHB8494 were 46.2%, 46.7%, and 39.7% of theoretical maximum, and those from beechwood xylan were 19.09%, 17.7%, and 21.4% of the theoretical maximum, respectively.
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Affiliation(s)
- Ichiro Kamei
- Faculty of Agriculture, University of Miyazaki, 1-1, Gakuen-kibanadai-nishi, Miyazaki, 889-2192, Japan. .,Graduate School of Agriculture and Engineering, University of Miyazaki, 1-1, Gakuen-kibanadai-nishi, Miyazaki, 889-2192, Japan.
| | - Kana Uchida
- Faculty of Agriculture, University of Miyazaki, 1-1, Gakuen-kibanadai-nishi, Miyazaki, 889-2192, Japan
| | - Virginia Ardianti
- Faculty of Agriculture, University of Miyazaki, 1-1, Gakuen-kibanadai-nishi, Miyazaki, 889-2192, Japan
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Tri CL, Kamei I. Butanol production from cellulosic material by anaerobic co-culture of white-rot fungus Phlebia and bacterium Clostridium in consolidated bioprocessing. BIORESOURCE TECHNOLOGY 2020; 305:123065. [PMID: 32120233 DOI: 10.1016/j.biortech.2020.123065] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 02/17/2020] [Accepted: 02/18/2020] [Indexed: 06/10/2023]
Abstract
Butanol production from lignocelluloses is desirable. Unfortunately, the known wild-types of butanol fermenting Clostridium bacteria are not capable of delignification and saccharification. Here we analyzed butanol production from cellulosic material using anaerobic co-culture of C. saccharoperbutylacetonicum with the white-rot fungus Phlebia sp. MG-60-P2. In consolidated bioprocessing, the co-culture synergistically produced butanol and enhanced saccharification. Knockout of the pyruvate decarboxylase gene from MG-60-P2 to produce transformant line KO77 led to inhibition of ethanol fermentation and high accumulation of saccharified cellobiose and glucose from cellulose. In co-culture of KO77 with C. saccharoperbutylacetonicum, enhanced butanol production was observed (3.2 g/L, compared with 2.5 g/L in co-culture of MG-60-P2 and C. saccharoperbutylacetonicum). We believe this is the first application of co-culture between white-rot fungus and Clostridium to produce butanol from cellulose; butanol production from lignocellulose by co-culture of C. saccharoperbutylacetonicum with Phlebia sp. MG-60-P2 and its transformant should be pursued.
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Affiliation(s)
- Chu Luong Tri
- Department of Environment and Resource Science, Interdisciplinary Graduate School of Agriculture and Engineering, University of Miyazaki, 1-1 Gakuen-Kibanadai-Nishi, Miyazaki 889-2192, Japan
| | - Ichiro Kamei
- Department of Environment and Resource Science, Interdisciplinary Graduate School of Agriculture and Engineering, University of Miyazaki, 1-1 Gakuen-Kibanadai-Nishi, Miyazaki 889-2192, Japan; Department of Forest and Environmental Sciences, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuen-Kibanadai-Nishi, Miyazaki 889-2192, Japan.
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Park JB, Kim JS, Kweon DH, Kweon DH, Seo JH, Ha SJ. Overexpression of Endogenous Xylose Reductase Enhanced Xylitol Productivity at 40 °C by Thermotolerant Yeast Kluyveromyces marxianus. Appl Biochem Biotechnol 2019; 189:459-470. [DOI: 10.1007/s12010-019-03019-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 04/22/2019] [Indexed: 10/26/2022]
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Motoda T, Yamaguchi M, Tsuyama T, Kamei I. Down-regulation of pyruvate decarboxylase gene of white-rot fungus Phlebia sp. MG-60 modify the metabolism of sugars and productivity of extracellular peroxidase activity. J Biosci Bioeng 2019; 127:66-72. [DOI: 10.1016/j.jbiosc.2018.06.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 06/19/2018] [Accepted: 06/21/2018] [Indexed: 10/28/2022]
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