Publications by authors named "Hai-xia Yu"

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  • The study identifies 11 members of the phosphatidylethanolamine binding protein (PEBP) family in mango, classifying them into three subfamilies: TFL1-like, MFT-like, and FT-like.
  • It reveals that specific MiFT genes promote early flowering and can enhance stress resistance in plants, especially under varying temperatures and conditions.
  • Interactions between MiFTs and various proteins suggest that these genes play a dual role in regulating flowering and stress responses, with notable differences in their functions.
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  • Comprehensive research on ecosystem service value (ESV) in the Dongjiang River Basin reveals its significance for balancing environmental and economic development.
  • The study, conducted from 2010 to 2020, found that while forest ecosystems dominated, land use changes led to a decrease in ESV for agricultural, forest, and construction lands, with water ESV fluctuating significantly.
  • Key findings indicate a notable spatial imbalance in ESV distribution, with upstream areas showing hot spots and downstream areas experiencing greater ecological stress, driven mainly by land utilization changes.
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  • RAD23 proteins, like MdRAD23D1, help transport ubiquitylated proteins to the 26S proteasome for degradation and play a role in plant response to drought stress.
  • Under drought conditions, MdRAD23D1 levels increase, which enhances stress tolerance in apple plants by degrading a proline-rich protein, MdPRP6.
  • The interaction between MdRAD23D1 and MdPRP6 reveals that while MdRAD23D1 improves drought resilience, MdPRP6 has a negative effect on drought response by influencing proline accumulation.
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The CO/COL gene family plays an important role in regulating photoperiod-dependent flowering time in plants. In this study, two COL2 gene homologs, MiCOL2A and MiCOL2B, were isolated from 'SiJiMi' mango, and their expression patterns and functions were characterized. The MiCOL2A and MiCOL2B genes both belonged to the group Ⅰ of CO/COL gene family.

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APETALA1 (AP1), CAULIFLOWER (CAL) and FRUITFULL (FUL) were homologous genes with redundant functions in the process of flower transformation and floral development in Arabidopsis. Two CALs genes, MiCAL1 and MiCAL2, were cloned from mango (Mangifera indica L.).

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Background: Uncontrolled inflammation causes health problems. Extracellular signal-regulated kinase (ERK) phosphorylates signal transducer and activator of transcription 3 (STAT3) at Ser727, resulting in inflammation. The leaf of Vernonia amygdalina (VA) is a medicinal herb for managing inflammation-associated diseases.

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  • * MiCOL1A and MiCOL1B proteins show high expression in leaves and flowers respectively, impacted by seasonal changes, and they have transcriptional activity in yeast.
  • * Overexpressing MiCOL1A and MiCOL1B in Arabidopsis delayed flowering time and improved drought tolerance, indicating their roles in flowering regulation and stress response.
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  • The study cloned and analyzed four TFL1 genes from mango, named MiTFL1-1 to MiTFL1-4, which are part of a protein family that influences flowering and inflorescence development.
  • The expression of these MiTFL1 genes was observed in both vegetative and reproductive organs, with their levels being linked to floral development, while overexpression in Arabidopsis led to delayed flowering and altered flower morphology in certain cases.
  • Interaction studies revealed that MiTFL1 proteins could interact with other stress-related proteins, suggesting their significant role in the flowering process of mango.
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Histone acetyltransferases are responsible for histone acetylation, while histone deacetylases (HDACs) counteract histone acetylation. An unbalanced dynamic between histone acetylation and deacetylation may lead to aberrant chromatin landscape and chromosomal function. HDAC2, a member of class I HDAC family, serves a crucial role in the modulation of cell signaling, immune response and gene expression.

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  • - The study evaluated the impact of four different aphid species on the development and reproduction of a ladybird, using a two-sex life table in a lab setting.
  • - Results indicated that the immature duration and survival rates varied among the aphid diets, with specific species promoting better growth and longevity of the ladybirds.
  • - Overall, the ladybirds showed higher reproduction and intrinsic rates of increase when fed on two specific aphid species, making them more suitable for ladybird population propagation.
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  • FLOWERING LOCUS T (FT) is crucial for regulating flowering in response to environmental signals in plants, but its role in mango (Mangifera indica L.) was previously unknown.
  • Researchers identified three MiFT genes (MiFT1, MiFT2, MiFT3) in mango, which are part of the PEBP family, sharing high sequence homology and showing significant differences in expression during flower development.
  • Ectopic expression of MiFTs in Arabidopsis led to earlier flowering, with MiFT1 showing the strongest effect and upregulating other flowering-related genes, highlighting its potential key regulatory role.
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BIG regulates the shoot stem cell population. The shoot apical meristem (SAM) contains a population of self-renewing cells, and provides daughter cells for initiation and development of aerial parts of plants. However, the underlying mechanisms of SAM size regulation remain largely unclear.

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  • Alcoholic liver injury (ALI) is a significant condition linked to alcohol-related diseases like steatohepatitis and cirrhosis, largely influenced by alcohol metabolism and inflammatory responses from macrophages.
  • The study discovered increased levels of protein tyrosine phosphatase 1B (PTP1B) in liver tissues and macrophages from alcohol-fed mice, suggesting its involvement in inflammation.
  • Silencing PTP1B reduced inflammation markers, while its overexpression heightened inflammation, indicating its potential role in regulating the NF-κB signaling pathway in ALI, paving the way for future research on this condition.
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Yes-associated protein (YAP) is a significant downstream protein in the Hippo signaling pathway with important functions in cell proliferation, apoptosis, invasion and migration. YAP also plays a role in the progression and development of various liver diseases. In hepatic fibrosis development and reversion, the proliferation and apoptosis of activated hepatic stellate cells (HSCs) play a critical role.

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  • - The study examined how photodegradation affects Moso bamboo when exposed to UV light, revealing that UV radiation causes chemical breakdown, discoloration, and surface cracking, which all weaken the material's strength.
  • - Results indicated a significant reduction in lignin content after UV exposure; lignin degradation products absorb UV light and contribute to early stages of discoloration, shifting the bamboo's surface spectral properties.
  • - Initially, photochemical reactions were rapid but slowed down after a week, with degraded products forming a protective layer, resulting in a grey and lighter surface over time due to the erosion of these protective materials.
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The activation of hepatic stellate cells (HSCs) is a central event in the progression of liver fibrosis. Multiple studies proved that DNA methylation might accelerate HSCs activation. However, the specific pathogenesis of liver fibrosis remains not fully addressed.

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  • The study explores the role of SENP2, a member of the deSUMOylation protease family, in liver fibrosis, showing it is decreased in fibrotic tissues and affected by TGF-β1 treatment.* -
  • Ectopic expression of SENP2 inhibits the activation and proliferation of HSC-T6 cells, while knocking it down leads to increased cell activation and reduced apoptosis.* -
  • The findings suggest SENP2 may play a crucial role in liver fibrosis by promoting apoptosis and regulating the Wnt/β-catenin signaling pathway, affecting key fibrosis markers.*
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  • Phosphopeptide enrichment is crucial for profiling phosphoproteins in complex biological samples due to their low abundance, and there is a need for selective binding between multi-phosphopeptides and mono-phosphopeptides for accurate analysis.
  • Two-dimensional nanosheets of Egyptian blue and its analogues were synthesized and successfully used for the first time to enrich phosphopeptides, with the Egyptian blue nanosheet demonstrating high selectivity for multi-phosphopeptides without enriching mono-phosphorylated ones.
  • The 2D CaCuSiO nanosheet exhibited not only specific selectivity but also high sensitivity in detecting phosphopeptides in cortical samples related to Alzheimer's disease, proving its potential for advanced biological research.
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The aim of this study was to develop a method combining an online concentration and high-efficiency capillary electrophoresis separation to analyze and detect three compounds (rutin, hyperoside, and chlorogenic acid) in Flos Farfarae. In order to get good resolution and enrichment, several parameters such as the choice of running buffer, pH and concentration of the running buffer, organic modifier, temperature, and separation voltage were all investigated. The optimized conditions were obtained as follows: the buffer of 40 mM NaHP0-40 mM Borax-30% v/v methanol (pH 9.

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Rheumatoid arthritis (RA) is a chronic autoimmune inflammatory disease and the pathogenesis remains unclear. Previous studies suggested that fibroblast-like synoviocytes (FLSs) play an important role in RA pathogenesis, including the injury of cartilage, the hyperplasia of the synovium and the release of inflammatory cytokines. We used complete Freund's adjuvant (CFA) induced rats as animal models for studying the RA pathogenesis.

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  • Seeding emergence and tiller number are crucial for wheat yield, yet their inheritance remains unclear.
  • A genomewide association study with 205 winter wheat varieties identified 31 loci linked to seeding emergence rate and tiller number, spread across 12 chromosomes.
  • The study also pinpointed 10 stable SNPs and several elite alleles that could significantly enhance seeding emergence and tillering, offering insights for better wheat breeding strategies.
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  • Endothelial nitric oxide synthase (eNOS) uncoupling contributes to endothelial dysfunction in atherosclerosis, and genistein is known to help prevent this condition but its effects on eNOS uncoupling hadn't been previously studied.
  • In experiments using human umbilical vein endothelial cells (HUVECs) that were injured by oxidized low-density lipoprotein (ox-LDL), genistein was found to reduce the production of harmful superoxide and improve the balance of crucial compounds (BH4/BH2).
  • The study concluded that genistein improves eNOS uncoupling through the activation of the sirtuin-1 pathway, suggesting a potential therapeutic role in managing atherosclerosis.
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  • An investigation into heavy metal contamination in the soils of the Phyllostachys praecox forest in Lin'an analyzed 160 topsoil samples for metals like Hg, As, Cu, Pb, Zn, Cd, Cr, Ni, Co, and Mn.
  • The results showed elevated levels of Pb, Cd, Zn, and Cu compared to background values in Zhejiang Province, but all concentrations were below the National Environmental Quality Standard for Soil limit.
  • Pollution levels varied, with moderate pollution from Pb and potential ecological risks primarily from Cd and Hg, indicating ecological concerns in the area.
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Electroacupuncture has therapeutic effects on ischemic brain injury, but its mechanism is still poorly understood. In this study, mice were stimulated by electroacupuncture at the Baihui (GV20) acupoint for 30 minutes at 1 mA and 2/15 Hz for 5 consecutive days. A cerebral ischemia model was established by ligating the bilateral common carotid artery for 15 minutes.

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Measuring the glucose concentrations in the interstitial fluid is currently the main method to achieve the continuous blood glucose monitoring. The MIR-ATR(Mid-infrared, Attenuated Total Reflection)Spectroscopy has prominent advantage on the analysis of small biological molecule for composition information like the glucose, but it is still an unresolved problem that how to detect the subcutaneous glucose concentration by using the MIR-ATR Spectroscopy. In the present paper, we carry out the experiment based on MIR-ATR for the detection of subcutaneous glucose information on both the natural state and the penetration state based on the theoryanalysis of MIR penetration depth.

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