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458 results on '"Li, Yue‐Zhong"'

12. Recent advances in discovery and biosynthesis of natural products from myxobacteria: an overview from 2017 to 2023.

Author

Wang, Chao-Yi, Hu, Jia-Qi, Wang, De-Gao, Li, Yue-Zhong, and Wu, Changsheng

Subjects
NATURAL products, MYXOBACTERALES, BIOSYNTHESIS, ENZYMOLOGY
Abstract

Covering: 2017.01 to 2023.11 Natural products biosynthesized by myxobacteria are appealing due to their sophisticated chemical skeletons, remarkable biological activities, and intriguing biosynthetic enzymology. This review aims to systematically summarize the advances in the discovery methods, new structures, and bioactivities of myxobacterial NPs reported in the period of 2017–2023. In addition, the peculiar biosynthetic pathways of several structural families are also highlighted. [ABSTRACT FROM AUTHOR]

Published
2024
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24. Deterministic assembly processes shaping habitat‐specific glycoside hydrolase composition.

Author

Li, Dan‐dan, Zhang, Zheng, Zhang, Peng, Wang, Jia‐ning, Liu, Ya, and Li, Yue‐zhong

Subjects
DETERMINISTIC processes, GLYCOSIDASES, DISTRIBUTION (Probability theory), PROKARYOTIC genomes, CARBOHYDRATES
Abstract

Aim: Glycoside hydrolases (GHs) encoded by prokaryotes play a crucial role in the degradation of carbohydrates, which is a key step in the carbon cycle. However, their global distribution remains poorly understood. Here, we conducted a comprehensive investigation of the global biogeographic patterns of prokaryotic‐encoded GHs. Location: Global. Time period: Present. Major taxa studied: Prokaryotes. Methods: We conducted a global survey of GH distribution based on 10,000 samples from the Earth Microbiome Project (EMP) and 17,923 completely sequenced prokaryotic genomes. The samples were retrieved from seven continents, covering all 17 EMP Ontology environments. We evaluated the assembly process and influencing factors of GH functional genes within prokaryotic communities, and analysed the rank abundance distributions (RADs), occupancy frequency distributions (OFDs), and taxonomic sources of GH families across various environments. Results: The median number of GH genes per thousand genes encoded by global prokaryotic communities was 9.11 (7.16–11.58), with a higher GH abundance in host‐associated communities than in free‐living communities. The median number of GH families in prokaryotic communities was 105 (86–121), with fewer families but tighter functional connections between families in host‐associated communities compared to free‐living communities. In any environment, the RAD of GH families followed a lognormal model, and their OFD was bimodal, with a strong positive correlation between the two. In addition, most GH families had complex and diverse taxonomic sources across different environments. Main conclusions: This study provides a panoramic view of the functional potentials for carbohydrate degradation across prokaryotic communities under diverse environmental conditions. The composition of GHs encoded by prokaryotic communities exhibits clear habitat specificity, which is driven by a combination of biotic and abiotic factors and generated through highly deterministic assembly processes. [ABSTRACT FROM AUTHOR]

Published
2024
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38. Estimate of the degradation potentials of cellulose, xylan, and chitin across global prokaryotic communities.

Author

Li, Dan‐dan, Zhang, Zheng, Wang, Jia‐ning, Zhang, Peng, Liu, Ya, and Li, Yue‐zhong

Subjects
COMMUNITIES, XYLANS, CHITIN, CELLULOSE, MICROBIAL enzymes, PROKARYOTIC genomes, RENEWABLE natural resources
Abstract

Complex polysaccharides (e.g. cellulose, xylan, and chitin), the most abundant renewable biomass resources available on Earth, are mainly degraded by microorganisms in nature. However, little is known about the global distribution of the enzymes and microorganisms responsible for the degradation of cellulose, xylan, and chitin in natural environments. Through large‐scale alignments between the sequences released by the Earth Microbiome Project and sequenced prokaryotic genomes, we determined that almost all prokaryotic communities have the functional potentials to degrade cellulose, xylan, and chitin. The median abundances of genes encoding putative cellulases, xylanases, and chitinases in global prokaryotic communities are 0.51 (0.17–1.01), 0.24 (0.05–0.57), and 0.33 (0.11–0.71) genes/cell, respectively, and the composition and abundance of these enzyme systems are environmentally varied. The taxonomic sources of the three enzymes are highly diverse within prokaryotic communities, and the main factor influencing the diversity is the community's alpha diversity index rather than gene abundance. Moreover, there are obvious differences in taxonomic sources among different communities, and most genera with degradation potentials are narrowly distributed. In conclusion, our analysis preliminarily depicts a panorama of cellulose‐, xylan‐, and chitin‐degrading enzymatic systems across global prokaryotic communities. [ABSTRACT FROM AUTHOR]

Published
2023
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