Publications by authors named "Yulong Guo"

Considering Henan Province as the research area, based on land use data with a resolution of 30 m in 2000, 2010, and 2020, we analyzed the distribution of the production-living-ecological space and the quality of the ecological environment in Henan Province using land transfer matrices and an eco-environmental effect model. Furthermore, based on 2020 land use data, the PLUS model was used to simulate land use data for the years 2030, 2040, and 2050 under three scenarios: natural development, production priority, and ecological priority. Finally, we calculated the ecological environment quality index and ecological contribution rate.

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Leptopilina wasps are crucial for biological pest control, particularly against the globally emerging pest Drosophila suzukii. Despite their ecological significance, the genomic basis of host selection and parasitism in this genus remains underexplored. In this study, we assembled a high-quality, chromosome-level genome of Leptopilina myrica, a species collected in Taizhou, Zhejiang Province, China.

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The size of comb cells is a key factor influencing the body size of honey bee workers. Comb cells and the body size of Chinese honey bee workers are smaller than those of Italian honey bee workers. To increase the size of Chinese honey bee workers, this study used newly built combs from Chinese honey bee colonies (control group) and Italian honey bee colonies (treatment group).

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Plastics and pesticides are commonly used and often coexist in the environment. As pollinating insects, honeybees are simultaneously exposed to both these toxins. However, there has been no study on the toxic effects of nano-polystyrene plastics (nanoPS) and cyfluthrin (Cy) on the Apis cerana cerana Fabricius until now.

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The transglutaminase (TGMs) family plays a crucial role in regulating mammalian reproduction, yet its impact on poultry reproductive traits has not been extensively studied. In this study, we identified eight members of the TGMs family in chickens and examined the contributions of genetic variations of coagulation factor XIII A chain (F13A1), transglutaminase 4 (TGM4), and LOC101749664 to selective breeding in commercial layers through genetic variation response pattern analysis. Transcriptome data from various tissues of high- and low-egg-yielding Gushi chickens revealed significant positive correlations between the mRNA expression levels of TGM4 and F13A1 genes and egg production (P < 0.

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MiRNAs are typically reported to play a negative regulatory role in post-transcriptional expression of target genes and are widely involved in a variety of biological processes such as growth, metabolism and reproduction. However, research on the role of miRNAs in the ovulation process of chicken ovaries is still insufficient compared to that in mammals. Here, we investigated the regulatory mechanisms of gga-miR-6634-5p in the growth and steroid hormone secretion of chicken granulosa cells (GCs) by targeting MMP16.

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Early warning of algal biomass is important for the preservation and management of drinking water. However, accurate prediction of algal biomass in large and deep reservoirs remains a challenge. Here, we used six years of high-frequency observations (30 min/time) to train long short-term memory (LSTM) models for forecasting chlorophyll-a concentration (C) and column-integrated C (CIC) for a large and deep Chinese reservoir (Xin'anjiang Reservoir).

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Corrosion is a prevalent issue in industrial production, directly impacting the production process and causing severe damages. To mitigate this problem, corrosion inhibitors are highly desired. Herein, a novel type of nano corrosion inhibitor, referred to as PTCNT, was synthesized through an oxidative copolymerization method utilizing aniline, ammonium persulfate (APS), and tannic acid (TA)-modified multiwalled carbon nanotubes (MWCNTs).

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The Huaihe River Basin is located in the north-south climate transition zone of China. The change of carbon storage in this area is of great significance for predicting the future ecological protection, mitigating climate change, and maintaining sustainable development of the Huaihe River Basin. The middle and upper reaches of Huaihe River Basin (above Bengbu station) were taken as the research area.

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Glyphosate (GY) is the most widely used herbicide in agriculture worldwide. Lead is a common heavy metal in the natural environment. Honeybees, as pollinators, are exposed to these pollutants.

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Though it is well known that insulin-like growth factor (IGF) binding protein 7 (IGFBP7) plays an important role in myogenesis and adipogenesis in mammals, its impact on the proliferation, differentiation, and lipid deposition in chicken primary myoblasts (CPM) and intramuscular preadipocytes remains unexplored. In the present study, we firstly examined the correlation between SNPs within the genomic sequence of the IGFBP7 gene and carcass and blood chemical traits in a F2 resource population by genetic association analysis, and found that a significant correlation between the SNP (4_49499525) located in the intron region of IGFBP7 and serum high-density lipoproteins (HDL). We then examined the expression patterns of IGFBP7 across different stages of proliferation and differentiation in CPMs and intramuscular preadipocytes via qPCR, and explored the biological functions of IGFBP7 through gain- and loss-of-function experiments and a range of techniques including qPCR, CCK-8, EdU, flow cytometry, Western blot, immunofluorescence, and Oil Red O staining to detect the proliferation, differentiation, and lipid deposition in CPMs and intramuscular preadipocytes.

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Egg-laying performance is of great economic importance in poultry, but the underlying genetic mechanisms are still elusive. In this work, we conduct a multi-omics and multi-tissue integrative study in hens with distinct egg production, to detect the hub candidate genes and construct hub molecular networks contributing to egg-laying phenotypic differences. We identifiy three hub candidate genes as egg-laying facilitators: TFPI2, which promotes the GnRH secretion in hypothalamic neuron cells; CAMK2D, which promotes the FSHβ and LHβ secretion in pituitary cells; and OSTN, which promotes granulosa cell proliferation and the synthesis of sex steroid hormones.

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Adiponectin (AdipoQ), an adipokine secreted by adipocytes, has been reported to exist widely in various cell types and tissues, including the adenohypophysis of chickens. However, the molecular mechanism by which AdipoQ regulates the function of chicken adenohypophysis remains elusive. In this study, we investigated the effects of AdipoQ on proliferation, apoptosis, secretion of related hormones (FSH, LH, TSH, GH, PRL and ACTH) and expression of related genes (FSHβ, LHβ, GnRHR, TSHβ, GH, PRL and ACTH) in primary adenohypophysis cells of chickens by using real-time fluorescent quantitative PCR (RT-qPCR), cell counting kit-8 (CCK-8), flow cytometry, enzyme-linked immunosorbent assay (ELISA) and Western blot (WB) assays.

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Article Synopsis
  • Fast-growing broilers and slow-growing indigenous chickens exhibit differences in breast muscle growth and intramuscular fat (IMF) content, but the genetic factors behind these traits are not well understood.
  • This study explores the changes in genome structure and chromatin accessibility in breast muscle during key developmental stages in both Arbor Acres (AA) broilers and Yufen (YF) indigenous chickens.
  • Findings reveal that breed-specific gene expressions linked to muscle growth and fat deposition are regulated by unique genomic interactions, with specific genes like IGF1 driving muscle growth in AA broilers and PIGO and others influencing fat deposition in YF chickens.
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Unlabelled: Gut microbiota of the bumblebee is critical as it modulates the health and fitness of the host. However, the mechanisms underlying the formation and maintenance of the diversity of bumblebee gut bacteria over a long period of evolution have yet to be elucidated. In particular, the gut bacterial diversity and community assembly processes of across the Chinese border remain unclear.

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is a deciduous tree that is highly valuable both economically and medicinally. Like other plants with 'red young leaves', the red-leaf period of most trees lasts only a few days, and the red leaves have little ornamental value. However, in recent years, some lines of with bright red young leaves and a prolonged red-leaf period have been utilized for urban greening.

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The "KNDy neurons" located in the hypothalamic arcuate nucleus (ARC) of mammals are known to co-express kisspeptin, neurokinin B (NKB), and dynorphin (DYN), and have been identified as key mediators of the feedback regulation of steroid hormones on gonadotropin-releasing hormone (GnRH). However, in birds, the genes encoding kisspeptin and its receptor GPR54 are genomic lost, leaving unclear mechanisms for feedback regulation of GnRH by steroid hormones. Here, the genes tachykinin 3 (TAC3) and prodynorphin (PDYN) encoding chicken NKB and DYN neuropeptides were successfully cloned.

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Wild bumble bees (Hymenoptera: Apidae) play a vital role in agro-ecosystems as important pollinators. However, they are threatened by virus pathogens that are widespread in honey bees. Previous studies have reported that viruses were able to be transmitted across bee genera and caused potential danger to wild bumble bees.

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Long non-coding RNAs (lncRNAs) play an essential role in vertebrate myogenesis and muscle diseases. However, the dynamic expression patterns, biological functions, and mechanisms of lncRNAs in skeletal muscle development and regeneration remain largely unknown. In this study, a novel lncRNA (named lncMGR) was differentially expressed during breast muscle development in fast- and slow-growing chickens.

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Vein-associated pigmentation (venation) is a type of floral coloration adopted by plants to attract pollinators. Several petunia (Petunia hybrida) lines generate dorsoventrally asymmetric venation patterning of the corolla tube, in which venation is only present in the dorsal tube. The molecular mechanism underlying this trait is unknown.

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miR-19b-3p is reported to undertake various biological role, while its function and action mechanism in chicken hepatic lipid metabolism is unclear. Conservation analysis and tissue expression pattern of miR-19b-3p and its target gene were evaluated, respectively. Dual luciferase reporter system and Western blot technologies were adopted to validate miR-19b-3p target gene.

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The fat body has important functions in energy, fertility, and immunity. In female insects, mating stimulates physiological, behavioral, and gene expression changes. However, it remains unclear whether the metabolites in the fat body are affected after the bumblebee () queen mates.

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Background And Aims: Atherosclerosis (AS) risk increases in patients with systemic autoimmune diseases. The association and mechanism between primary Sjogren's syndrome (pSS) and AS haven't been explained for now. We did this cross-sectional study to clarify the prevalence and risk factors of AS in patients with pSS, and to further explore how immune cells and inflammatory cytokines work in the process.

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Background: Modern breeding strategies have resulted in significant differences in muscle mass between indigenous chicken and specialized broiler. However, the molecular regulatory mechanisms that underlie these differences remain elusive. The aim of this study was to identify key genes and regulatory mechanisms underlying differences in breast muscle development between indigenous chicken and specialized broiler.

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Article Synopsis
  • Long noncoding RNAs (lncRNAs) are becoming important in understanding lipid metabolism in mammals, but their role in chicken biology, especially in fat development, is still unclear.
  • Researchers identified a new lncRNA called lncHLEF in the livers of hens that increases significantly during peak egg-laying and is involved in creating fat droplets and increasing lipids.
  • lncHLEF interacts with specific proteins and microRNAs to enhance lipid synthesis in the liver and can promote fat development in muscles through communication with other fat cells, while not affecting fat deposits in the abdomen.
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