Publications by authors named "Yougen Wu"

Four new isocoumarin derivatives 12-O-acetyl-isocitreoisocoumarinol (1), (+)-(10R)-O-acetyl-diaportinol (2-a), (-)-(10S)-O-acetyl-diaportinol (2-b), peyroisocoumarin E (3) and new stereoconfigurations of three isocoumarin derivatives desmethyldichlorodiaportinol A (4), threo-monochlorodiaportinol A (5-a), erytheo-monochlorodiaportinol A (5-b), together with nine known ones (6-14), were separated from the rice fermentation of endophytic fungus Diaporthe arengae M2 isolated from Camellia oleifera. The structures of new compounds were determined by extensive spectroscopic analyses including nuclear magnetic resonance (NMR) and high resolution electrospray ionization mass spectroscopy (HR-ESI-MS). Compounds 4, 7, 8, 12, 13 exhibited definite inhibition against five strains of bacteria with the MIC values range from 16 μg/mL to 64 μg/mL.

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Introduction: The impact of physical activity on the incidence of idiopathic pulmonary fibrosis (IPF) remains less well studied. This study aimed to investigate the relationship between moderate-to-vigorous physical activity (MVPA) and the risk of developing IPF.

Methods: We analyzed data from a prospective cohort study within the UK Biobank involving 502,476 participants.

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  • - The study analyzed the relationship between height and cancer risk specifically in East Asian populations using data from the China Kadoorie Biobank, finding that increased height correlates with a higher risk of several types of cancer over a median follow-up of 10.1 years.
  • - For every 10 cm increase in height, the risk for overall cancer and specific cancers like lung, breast, and esophageal significantly increased, with hazard ratios indicating a strong association between height and cancer risk.
  • - Mendelian randomization analyses further suggested that genetically predicted height is also associated with higher risks for lung and gastric cancers among East Asians, indicating that height may be a potential causal risk factor for these diseases.
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Casparian strip membrane domain proteins (CASPs), regulating the formation of Casparian strips in plants, serve crucial functions in facilitating plant growth, development, and resilience to abiotic stress. However, little research has focused on the characteristics and functions of in cultivated peanuts. In this study, the genome-wide identification and expression analysis of the gene family was performed using bioinformatics and transcriptome data.

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Aims: The association of sleep traits (insomnia, sleep duration, chronotype, daytime sleepiness, and snoring) with benign prostatic hyperplasia (BPH) is unclear. This research aimed to examine the effects of sleep traits on BPH risk.

Methods: A total of 170 241 men aged 38 to 73 years from UK Biobank were included.

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Five new cytochalasins, diaporchalasins A-E (1-5), together with 14 known congeners (6-19) were isolated from the endophytic fungus Diaporthe sp. BMX12, which was isolated from the branches of Aquilaria sinensis. The structures of the new compounds were elucidated by extensive spectroscopic analyses including high-resolution electron spray ionization mass spectrometry (HR-ESI-MS) and nuclear magnetic resonance (NMR).

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Microbial communities are an important component of mangrove ecosystems. In order to reveal the diversity of endophytic fungi in the mangrove ferns and in China, the internal transcribed spacer (ITS) regions of endophytic fungi in four plant tissues (leaves, petioles, roots, and rhizomes) from three locations (Zhanjiang, Haikou, and Wenchang) were sequenced. The richness, species composition, and community similarity were analyzed.

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As an essential trace element for plant growth and development, manganese plays a crucial role in the uptake of the heavy metal cadmium by rice (Oryza sativa L.). In this study, we developed a novel slow-release manganese fertilizer named Mn@LNS-EL.

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  • Ganoderma mushrooms are special because they contain unique chemicals called lanostane-type triterpenoids.
  • Researchers studied the Ganoderma amboinense mushrooms and discovered twelve new lanostane triterpenoids that were not known before.
  • Some of these new compounds can help prevent certain health issues, like high blood sugar and inflammation, with different strengths in their abilities.
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To further reveal the molecular mechanisms underlying the formation of continuous cropping disorders in patchouli, this study analyzed the function of calcium dependent protein kinase () genes at the molecular level in patchouli continuous cropping disorders. The findings unveiled the presence of 45 genes within the complete patchouli genome dataset. These genes exhibited a range of molecular weights from 50.

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Casparian strip membrane domain protein-like () genes are key genes for the formation and regulation of the Casparian strip and play an important role in plant abiotic stress. However, little research has focused on the members, characteristics, and biological functions of the patchouli gene family. In this study, 156 genes were identified at the whole-genome level.

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  • * Recent studies using transcriptomic and metabolomics analyses have identified key genes and metabolites that contribute to the response to continuous cropping obstacles (CCOs) in various biological processes.
  • * Effective strategies to mitigate CCOs include soil amendments to enhance microbial communities and soil fertility, as well as practices like crop rotation and intercropping, which could promote sustainable agriculture in medicinal plant cultivation.
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  • The study investigates the molecular mechanisms behind flower development in a protected species used in medicine and spices, which is difficult to induce flowering in.
  • Researchers compared transcriptome and metabolome data during flower development, identifying 13,469 differentially expressed unigenes and 371 differentially accumulated metabolites linked to various metabolic processes.
  • Key findings suggest that hormonal interactions and specific metabolic pathways (like starch and sucrose metabolism) play crucial roles in floral organ development and that certain metabolites, such as amino acids and flavonoids, change based on the flower's developmental stages.
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Oil-tea camellia trees, the collective term for a class of economically valuable woody oil crops in China, have attracted extensive attention because of their rich nutritional and pharmaceutical value. This study aimed to analyze the genetic relationship and genetic diversity of oil-tea camellia species using polymorphic SSR markers. One-hundred and forty samples of five species were tested for genetic diversity using twenty-four SSR markers.

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Huang is an important woody oil crop in China, which has attracted much attention because of its abundant nutritional components and pharmaceutical value. Its seeds undergo a complex series of physiological and biochemical changes during maturation, with consequent alterations in metabolites. In order to investigate the endogenous metabolism of on Hainan Island during seed development, in this study, ultra-high-performance liquid tandem chromatography coupled with quadrupole time-of-flight mass spectrometry (UHPLC/Q-TOF-MS) and multivariate statistical analysis (MSA) were used to analyze the differences in the chemical compounds of seeds among the four maturation stages.

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  • Drought stress significantly affects the yield of a specific plant (referred to as Huang), especially in Hainan, China, where droughts are common; researchers studied the response of both drought-tolerant (HD1) and drought-sensitive (WH1) cultivars using a PEG simulation.
  • The stress led to inhibited growth and decreased leaf water content while increasing harmful substances (MDA) and enhancing antioxidant activities in leaves; HD1 outperformed WH1 in maintaining water levels and producing key osmotic regulators.
  • A total of 5,001 differentially expressed genes (DEGs) were identified over time in HD1, with many involved in plant-hormone signaling and biosynthesis of lignin and flavonoids
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  • - Patchouli cultivation faces challenges due to soil sickness caused by the accumulation of autotoxins, particularly p-hydroxybenzoic acid (p-HBA), which negatively affects plant growth and health.
  • - A study analyzing patchouli seedlings revealed that p-HBA treatment leads to inhibited root biomass, increased oxidative stress, activation of antioxidant enzymes, and changes in osmotic adjustment substance content over time.
  • - RNA-sequencing identified thousands of differentially expressed genes (DEGs) associated with various metabolic pathways and responses to stress, highlighting the complex molecular mechanisms involved in patchouli’s reaction to p-HBA and its impacts on plant health.
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Flavonoids are secondary metabolites widely found in plants, which perform various biological activities, such as antiinflammation, antioxidation, antitumor, and so on. Huang, a species of oil-tea tree, is an important woody oil crop species widely planted on Hainan Island, which provides health benefits with its high antioxidant activity and abundant flavonoid content. However, very little is known about the overall molecular mechanism of flavonoid biosynthesis in Huang.

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The oil of spp. has become a well-known high-quality edible oil because of its rich nutrition. It is of great significance to breed fine varieties of spp.

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Background: Few models exist to predict mortality in cancer patients receiving immunotherapy. Our aim was to build a machine learning-based risk stratification model for predicting mortality in atezolizumab-treated cancer patients.

Methods: Data from 2538 patients in eight atezolizumab-treated cancer clinical trials across three cancer types (non-small-cell lung cancer, bladder transitional cell carcinoma, and renal cell carcinoma) were included.

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LKB1 loss of function is one key oncogenic event in lung cancer. Clinical data suggest that LKB1 loss of function is associated with patients' smoking status. The responsible ingredients and molecular mechanisms in tobacco for LKB1 loss of function, however, are not defined.

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Eight new phenethoxy derivatives, trichoasperellins A-H (-), were isolated from the endophytic fungus G10 isolated from the medicinal plant L. The structures of these compounds were elucidated from spectroscopic data, -based configurational analysis, and Mosher's methods. Compounds - and - bear one or two multioxidized C moieties with the same carbon skeleton.

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  • Patchouli is a significant crop valued for its medicinal and aromatic properties, particularly for components like patchoulol and pogostone used in cosmetics and pharmaceuticals, leading to a growing demand for it.* -
  • However, continuous cropping of patchouli has caused severe yield and quality declines due to specific obstacles, with limited understanding of the physiological and transcriptional responses to this stress.* -
  • Research using RNA sequencing and miRNA analysis revealed significant changes in root growth and metabolism under continuous cropping conditions, identifying thousands of differentially expressed genes and several miRNAs that could help explain patchouli's response to stress.*
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  • Liver damage, significantly caused by alcohol (over 35% of acute cases), necessitates the search for effective treatment drugs.
  • The study focuses on isolating and purifying active peptides that can aid in liver protection, specifically identifying the most effective component, A1-2, with a purity of 93.45%.
  • Metabolomics analysis showed that the treatment with CMAPs altered specific metabolites, offering insights for future liver-related research.
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