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Cui FJ, Fu X, Sun L, Zan XY, Meng LJ, Sun WJ. Recent insights into glucans biosynthesis and engineering strategies in edible fungi. Crit Rev Biotechnol 2023:1-18. [PMID: 38105513 DOI: 10.1080/07388551.2023.2289341] [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: 06/27/2022] [Accepted: 04/21/2023] [Indexed: 12/19/2023]
Abstract
Fungal α/β-glucans have significant importance in cellular functions including cell wall structure, host-pathogen interactions and energy storage, and wide application in high-profile fields, including food, nutrition, and pharmaceuticals. Fungal species and their growth/developmental stages result in a diversity of glucan contents, structures and bioactivities. Substantial progresses have been made to elucidate the fine structures and functions, and reveal the potential molecular synthesis pathway of fungal α/β-glucans. Herein, we review the current knowledge about the biosynthetic machineries, including: precursor UDP-glucose synthesis, initiation, elongation/termination and remodeling of α/β-glucan chains, and molecular regulation to maximally produce glucans in edible fungi. This review would provide future perspectives to biosynthesize the targeted glucans and reveal the catalytic mechanism of enzymes associated with glucan synthesis, including: UDP-glucose pyrophosphate phosphorylases (UGP), glucan synthases, and glucanosyltransferases in edible fungi.
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Affiliation(s)
- Feng-Jie Cui
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, P. R. China
- Jiangxi Provincial Engineering and Technology Center for Food Additives Bio-production, Dexing, P. R. China
| | - Xin Fu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, P. R. China
| | - Lei Sun
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, P. R. China
| | - Xin-Yi Zan
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, P. R. China
| | - Li-Juan Meng
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, P. R. China
| | - Wen-Jing Sun
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, P. R. China
- Jiangxi Provincial Engineering and Technology Center for Food Additives Bio-production, Dexing, P. R. China
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Yang Y, Shi L, Xu X, Wen J, Xie T, Li H, Li X, Chen M, Dou X, Yuan C, Song H, Xie B, Tao Y. Spermidine Synthase and Saccharopine Reductase Have Co-Expression Patterns Both in Basidiomycetes with Fusion Form and Ascomycetes with Separate Form. J Fungi (Basel) 2023; 9:jof9030352. [PMID: 36983520 PMCID: PMC10051792 DOI: 10.3390/jof9030352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 03/07/2023] [Accepted: 03/08/2023] [Indexed: 03/15/2023] Open
Abstract
Gene fusion is a process through which two or more distinct genes are fused into a single chimeric gene. Unlike most harmful fusion genes in cancer cells, in this study, we first found that spermidine synthetase- (SPDS, catalyst of spermidine biosynthesis) and saccharopine reductase- (SR, catalyst of the penultimate step of lysine biosynthesis) encoding genes form a natural chimeric gene, FfSpdsSr, in Flammulina filiformis. Through the cloning of full-length ORFs in different strains and the analysis of alternative splicing in developmental stages, FfSpdsSr has only one copy and unique transcript encoding chimeric SPDS-SR in F. filiformis. By an orthologous gene search of SpdsSr in more than 80 fungi, we found that the chimeric SpdsSr exists in basidiomycetes, while the two separate Spds and Sr independently exist in ascomycetes, chytridiomycetes, and oomycetes. Further, the transcript level of FfSpdsSr was investigated in different developmental stages and under some common environmental factors and stresses by RT-qPCR. The results showed that FfSpdsSr mainly up-regulated in the elongation stage and pileus development of F. filiformis, as well as under blue light, high temperature, H2O2, and MeJA treatments. Moreover, a total of 15 sets of RNA-Seq data, including 218 samples of Neurospora crassa, were downloaded from the GEO database and used to analyze the expression correlation of NcSpds and NcSr. The results showed that the separate NcSpds and NcSr shared highly similar co-expression patterns in the samples with different strains and different nutritional and environmental condition treatments. The chimeric SpdsSr in basidiomycetes and the co-expression pattern of the Spds and Sr in N. crassa indicate the special link of spermidine and lysine in fungi, which may play an important role in the growth and development of fruiting body and in response to the multiple environmental factors and abiotic stresses.
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Affiliation(s)
- Yayong Yang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Mycological Research Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Lei Shi
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Mycological Research Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xinyu Xu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Mycological Research Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jin Wen
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Mycological Research Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Tianyue Xie
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Mycological Research Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Hui Li
- Institute of Cash Crops, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, China
| | - Xiaoyu Li
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Mycological Research Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Mengyu Chen
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Mycological Research Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xinyi Dou
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Mycological Research Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Chengjin Yuan
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Mycological Research Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Hanbing Song
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Mycological Research Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Baogui Xie
- Mycological Research Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yongxin Tao
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Mycological Research Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Correspondence: ; Tel.: +86-0591-83789281
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