Shuqi Guo

• Ph. D. at Xi'an Jiaotong University

Background Microbial-driven lignin depolymerization has emerged as a promising approach for lignin degradation. However, this process is hindered by the limited activity of lignin-degrading enzymes. Antioxidants are crucial for maintaining redox homeostasis in living cells, which can impact the efficiency of enzymes. Ascorbic acid (AA) is well-know...

Climate change driving by greenhouse gas emissions from petroleum‐based energy has garnered significant attention. Renewable energy production via a sustainable system that integrates the cell factory and visible‐light‐driven photocatalysts offers a novel approach for upcycling methane and addressing global energy challenges. Here, an auto‐activate...

Converting greenhouse gases into valuable products has become a promising approach for achieving a carbon‐neutral economy and sustainable development. However, the conversion efficiency depends on the energy yield of the substrate. In this study, we developed an electro‐biocatalytic system by integrating electrochemical and microbial processes to u...

Converting greenhouse gases into valuable products has become a promising approach for achieving a carbon‐neutral economy and sustainable development. However, the conversion efficiency depends on the energy yield of the substrate. In this study, we developed an electro‐biocatalytic system by integrating electrochemical and microbial processes to u...

Climate change driving by greenhouse gas emissions from petroleum‐based energy has garnered significant attention. Renewable energy production via a sustainable system that integrates the cell factory and visible‐light‐driven photocatalysts offers a novel approach for upcycling methane and addressing global energy challenges. Here, an auto‐activate...

The high externalized and still partly unknown costs of fossil fuels through air pollution from combustion, and their limited resources have caused mankind to (re)turn to renewable sources such as wind, solar, and biomass to meet its energy needs. Converting biomass to synthesis gas is advantageous since it can utilize a wide variety of (waste) fee...

The utilization of C1 gases (CH4, CO2, and CO) for the production of oleochemicals applied in the energy and platform chemicals through microbial engineering has emerged as a promising approach to reduce greenhouse gas emissions and decrease dependence on fossil fuel. C1 gas-utilizing microorganisms, such as methanotrophs, microalgae, and acetogens...

From the view of a circular economy, the bioconversion of methane into cell protein and carbohydrates could provide alternative food resources while cutting greenhouse gases, considering renewable gases from anaerobic...

An alternative path to circular carbon in (bio)plastics is offered by gasification. This process can use a wide variety of carbonaceous feedstocks, from wood over sewage sludge to municipal solid waste (MSW), as well as waste plastics, and convert them into synthesis gas (syngas), which is a mixture of CO, H2 and some CH4 and CO2. While anaerobic d...

Phenazine-1-carboxylic acid (PCA) secreted by Pseudomonas chlororaphis has been commercialized and widely employed as an antifungal pesticide. However, it displays potential hazards to nontarget microorganisms and the environment. Although the PCA degradation characteristics have received extensive attention, the biodegradation efficiency is still...

As a promising industrial microorganism, methylotroph is capable of using methane or methanol as the sole carbon source natively, which has been utilized in the biosynthesis of various bioproducts. However, the relatively low efficiency of carbon conversion has become a limiting factor throughout the development of methanotrophic cell factories due...

Penicillenols belong to the family of tetramic acids with anticancer and antibacterial activities. Here, we report the discovery of the biosynthetic gene cluster (pnc) for penicillenol A1 and E in Penicillium citrinum ATCC9849 by genome mining. We discover the pnc cluster based on the results of gene deletions in P. citrinum and gene cluster hetero...

Given the rapid development of technologies in biochemical engineering and genetic engineering, biological capture, conversion and utilization of greenhouse gases (carbon dioxide and methane) into value-added products have been progressed rapidly. The efficiency of electron transfer and energy supply are essential for microbial carbon fixation. In...

Iodinin, a natural phenazine N-oxide, is generally derived from phenazine-1,6-dicarboxylic acid (PDC) and has been widely used in the pharmacological and therapeutic fields because of its diverse biological activities. Despite the unique structural properties of N-oxides, which renders them attractive starting materials for the manufacture of chemo...

Pseudomonas chlororaphis has been demonstrated as a valuable source of antimicrobial metabolites for plant disease biocontrol and biopesticide development. Although phenazine-1-carboxylic acid (PCA) secreted by P. chlororaphis has been commercialized as an antifungal biopesticide, it shows poor antibacterial activity. Questiomycin A, with versatile...

Methanotrophs capable of converting C1-based substrates play an important role in the global carbon cycle. As one of the essential macronutrient components in the medium, the uptake of nitrogen sources severely regulates the cell’s metabolism. Although the feasibility of utilizing nitrogen gas (N2) by methanotrophs has been predicted, the mechanism...

C1 gaseous substrates (CH4, CO2, and CO) derived from natural gas, biogas, and syngas, are of interest due to their threats to the environment or inefficient utilization. Benefiting from advanced genetic editing tools and bioconversion strategies, metabolically engineered C1-gas-utilizing microorganisms (CGUM), such as methanotrophs, cyanobacteria,...

Methane is considered the carbon source with the highest potential in industrial biotechnology because of its abundance and sustainability. The biological conversion of methane into chemicals or fuels can not only reduce greenhouse gas emissions, but can also substitute edible substrates used in biorefineries. Methanotrophs that can utilize methane...

One-carbon (C1) substrates such as methane and methanol have been considered as the next-generation carbon source in industrial biotechnology with the characteristics of low cost, availability, and bioconvertibility. Recently, methanotrophic bacteria naturally capable of converting C1 substrates have drawn attractive attention for their promising a...

Due to abundant availability of shale gas and biogas, methane has been considered as one of the most potential carbon sources for industrial biotechnology. Methanotrophs carrying the native methane monooxygenase are capable of using methane as a sole energy and carbon source, which provides a novel strategy for reducing greenhouse gas emission and...

Background: 2-Acetamidophenol (AAP) is an aromatic compound with the potential for antifungal, anti-inflammatory, antitumor, anti-platelet, and anti-arthritic activities. Due to the biosynthesis of AAP is not yet fully understood, AAP is mainly produced by chemical synthesis. Currently, metabolic engineering of natural microbial pathway to produce...

Aromatic N-oxides are valuable due to their versatile chemical, pharmaceutical, and agricultural applications. Natural phenazine N-oxides possess potent biological activities and can be applied in many ways; however, few N-oxides have been identified. Herein, we developed a microbial system to synthesize phenazine N-oxides via an artificial pathway...

Pseudomonas chlororaphis have been demonstrated to be environmentally friendly biocontrol strains, and most of them can produce phenazine compounds. Phenazine-1,6-dicarboxylic acid (PDC) with a potential antibacterial activity, was generally found in Streptomyces but not in Pseudomonas. The present study aimed to explore the feasibility of PDC synt...

CpxR is a global response regulator that negatively influences the antimicrobial activities of Xenorhabdus nematophila. Herein, the wildtype and ΔcpxR mutant of X. nematophila were cultured in a 5‐l and 70‐l bioreactor. The kinetic analysis showed that ΔcpxR significantly increased the cell biomass and antibiotic activity. The maximum dry cell weig...

Background Xenocoumacin 1 (Xcn1) and Xenocoumacin 2 (Xcn2) are the main antimicrobial compounds produced by Xenorhabdus nematophila. Culture conditions, including pH, had remarkably distinct effects on the antimicrobial activity of X. nematophila. However, the regulatory mechanism of pH on the antimicrobial activity and antibiotic production of thi...

Pseudomonas strains are increasingly attracting considerable attention as a valuable bacterial host both for basic and applied research. It has been considered as a promising candidate to produce a variety of bioactive secondary metabolites, particularly phenazines. Apart from the biotechnological perspective, these aromatic compounds have the nota...

Natural phenazines are versatile secondary metabolites that are mainly produced by Pseudomonas and Streptomyces. All phenazine-type metabolites originate from two precursors: phenazine-1-carboxylic acid (PCA) in Pseudomonas or phenazine-1,6-dicarboxylic acid (PDC) in Streptomyces and other bacteria. Although the biosynthesis of PCA in Pseudomonas h...