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.
View Article and Find Full Text PDFIntroduction: 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.
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.
View Article and Find Full Text PDFAims: 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.
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).
View Article and Find Full Text PDFMicrobial 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.
View Article and Find Full Text PDFAs 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.
View Article and Find Full Text PDFTo 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.
View Article and Find Full Text PDFCasparian 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.
View Article and Find Full Text PDFOil-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.
View Article and Find Full Text PDFHuang 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.
View Article and Find Full Text PDFFlavonoids 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.
View Article and Find Full Text PDFThe 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.
View Article and Find Full Text PDFBackground: 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.
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.
View Article and Find Full Text PDFEight 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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