Publications by authors named "Lintong Yang"
Excessive copper (Cu) has become a common physiological disorder restricting the sustainable production of citrus. Coumarin (COU) is a hydroxycinnamic acid that can protect plants from heavy metal toxicity. No data to date are available on the ameliorative effect of COU on plant Cu toxicity.
View Article and Find Full Text PDFArticle Synopsis
- Limited research has been done on how copper (Cu) interacts with pH levels and affects gene expression and metabolite profiles in plant roots.
- In an experiment, seedlings were exposed to either toxic (300 μM) or control (0.5 μM) copper chloride at different pH levels (3.0 and 4.8) for 17 weeks, revealing that a higher pH reduced Cu's toxic effects on metabolites in roots.
- The study found that increased pH helped roots manage Cu levels better, reduced oxidative stress, and mitigated damage and growth impairment caused by Cu, while also showing differences and similarities in gene and metabolite responses between roots and leaves.
Article Synopsis
- - Decreasing nitrogen (N) levels negatively impacted seedling growth by reducing CO assimilation, stomatal conductance, chlorophyll content, and the Chl/Chl ratio, while raising intercellular CO concentration.
- - N deficiency led to an increase in chlorophyll fluorescence parameters indicating impaired electron transport in photosystem II, resulting in lower energy efficiency during photosynthesis.
- - The study found that N deficiency enhanced antioxidant enzyme activities and sulfur metabolism, showing different responses between leaves and roots, with a suggestion for further research into sulfur compound metabolism under nutrient deficiency.
Article Synopsis
- The study investigates how plant hormones and energy-rich compounds help Citrus sinensis leaves cope with aluminum toxicity at different pH levels, revealing more adaptive responses at pH 4.0 compared to pH 3.0.
- At pH 4.0, a greater number of hormones and compounds were found to be responsive to aluminum toxicity, indicating that a higher pH enhances the plant's ability to manage Al stress.
- The improved resilience includes enhanced leaf growth, better detoxification of aluminum and reactive oxygen species, and maintenance of energy compound levels, highlighting the critical role of hormones and metabolites in plant health during aluminum stress.
Article Synopsis
- The study investigates how boron (B) helps sweet orange seedlings cope with excessive copper (Cu) levels in citrus orchard soils, focusing on gene expression, metabolite profiles, and physiological changes in the leaves.
- Seedlings treated with high copper levels (Cu350) displayed significant changes, including a large number of gene and metabolite upregulations and downregulations, compared to those treated with lower copper and boron levels.
- The addition of boron reduced oxidative damage and improved leaf growth by mitigating the negative effects of copper on the seedlings' metabolism and photosynthesis, indicating its potential role in promoting plant health under stress.
Article Synopsis
- Citrus orchards in China face nitrogen deficiency, impacting hormone levels in sweet orange plants, specifically in leaves and roots.
- Targeted metabolomics revealed that N deficiency leads to decreased levels of gibberellins and IAA, while increasing OPDA, ethylene, and salicylic acid, which may cause reduced growth and quicker leaf aging.
- Adjustments in hormones due to N deficiency also affected the root/shoot dry weight ratio and root system architecture, ultimately improving the plant's nitrogen use efficiency and tolerance to low nitrogen conditions.
Article Synopsis
- Isoprenoid metabolism plays a crucial role in various plant functions, but its response to aluminum (Al) stress in Citrus plants is not well understood.
- The study found that Al treatment led to different volatilization rates of monoterpenes and isoprene in Al-tolerant (C. sinensis) and Al-sensitive (C. grandis) Citrus species.
- Differences in CO assimilation, enzyme activity, and gene expression related to isoprenoid metabolism may explain how these Citrus species cope with Al stress, indicating isoprenoid metabolism’s importance in Al tolerance.
Article Synopsis
- - The study investigates how adding boron (B) affects citrus seedlings exposed to excessive copper (Cu) levels, specifically looking at its role in reducing oxidative damage in both leaves and roots after 24 weeks of treatment.
- - Results show that increased Cu levels led to significant increases in harmful compounds (like reactive oxygen species and malondialdehyde), but B addition helped mitigate these effects and improved detoxification systems related to oxidative stress.
- - The findings support the idea that B reduces Cu-induced oxidative damage through different mechanisms in leaves and roots, suggesting that the interactions between Cu and B are crucial for protecting plant health.
Article Synopsis
- This study examines how boron (B) supplementation affects the remodeling of plant cell walls (CW) in Citrus sinensis seedlings exposed to high levels of copper (Cu).
- The researchers found that adding B helped mitigate the harmful effects of Cu by lowering its concentrations in the plant's leaves and roots, thus promoting healthier growth.
- Techniques like Fourier transform infrared (FTIR) and X-ray diffraction (XRD) were used to show that certain components of the cell walls (such as pectin and cellulose) can bind to Cu, reducing its toxic effects on the plants.
Article Synopsis
- Fruit crops offer a diverse range of fruit products that are important for human nutrition.
- These crops are not only crucial for health but also hold substantial economic value.
- The cultivation and sale of fruit contribute significantly to both local and global economies.
Article Synopsis
- Researchers studied 'Xuegan' (Citrus sinensis) seedlings' response to manganese (Mn) in hydroponic conditions, finding that increased Mn supply decreased both Mn absorption and its translocation from roots to shoots.
- Without Mn, the seedlings increased the pH of the solution, but higher Mn levels reduced this alkalization and led to more secretion of root total phenolics, while pH dropped.
- Metabolomic analysis revealed that Mn-tolerant seedlings upregulated various phenolic and secondary metabolites, indicating a complex response mechanism to manage high Mn levels and maintain tolerance.
Regulation of magnesium and calcium homeostasis in citrus seedlings under varying magnesium supply.
Plant Physiol Biochem
November 2023
Article Synopsis
- Magnesium (Mg) and calcium (Ca) are crucial nutrients for plant growth, but their roles and relationships in citrus plants under different Mg supply levels are not fully understood.
- The study focused on Citrus sinensis seedlings, which were grown in conditions of Mg deficiency and sufficiency, revealing that Mg deficiency led to reduced root and shoot growth, especially impacting branch organs.
- Results showed that Mg deficiency decreased the concentrations of both Mg and Ca in the seedlings while altering their distribution across different organs, with a notable increase in the Ca/Mg ratio, indicating a significant interaction between Mg supply and nutrient homeostasis.
Article Synopsis
- Boron (B) helps citrus plants deal with toxic levels of copper (Cu), but the exact mechanism is not well understood.
- In a study with 'Xuegan' citrus seedlings, researchers explored how B affected the secretion of low molecular weight compounds (LMWCs) from roots and their concentrations in roots and leaves while exposing them to control (0.5 µM) and high (350 µM) Cu levels.
- The results showed that while Cu-stress increased the release of certain LMWCs, B didn't enhance this release and even reduced malate secretion; however, B increased the concentrations of some LMWCs in Cu-stressed roots, indicating an internal detoxification process for mitigating Cu-toxicity
Article Synopsis
- Seedlings were grown with either 15 mM (control) or 0 mM nitrogen for 10 weeks, leading to significant changes in root metabolism and gene expression in nitrogen-deficient plants.
- The nitrogen-deficient roots enhanced phosphate homeostasis, improved nitrogen balance by modifying compound ratios, and promoted energy production while reducing energy consumption for growth.
- Additionally, these roots exhibited better detoxification of harmful substances, which helped protect them from oxidative damage and delayed aging.
Article Synopsis
- The study examined how interactions between copper (Cu) and pH levels affect hormone levels and related metabolites in plant leaves and roots.
- Increased pH was found to reduce the harmful effects of Cu toxicity on these hormonal levels, while low pH worsened Cu toxicity impacts.
- Adjustments in hormone levels, including auxins and jasmonates, serve as adaptive strategies to manage Cu toxicity but can also lead to reduced plant growth due to stress responses.
Nile tilapia (hereinafter referred to as tilapia) is a species with high economic value and extensive cultivation. In this study, the low-temperature Nile tilapia skin collagen powder (TSCP) was prepared by liquid nitrogen freeze pulverization. After physical and chemical analysis of its properties, it was found that its characteristics were similar to those of type I collagen.
View Article and Find Full Text PDFOrganic acids metabolism and nitrogen (N) metabolism in rice seedlings and the relationship between them are not fully understood. In this study, rice ( L. ssp.
View Article and Find Full Text PDFAlginate microspheres-collagen hydrogel, as a novel 3D culture system, enhanced skin wound healing of hUCMSCs in rats model.
Colloids Surf B Biointerfaces
November 2022
Article Synopsis
- Stem cell transplantation shows promise for better wound healing, but survival of transplanted cells has been an issue.
- A new 3D culture system using alginate microsphere-collagen hydrogel (AMS-Col gel) enhances the survival and effectiveness of human umbilical cord mesenchymal stem cells (hUCMSCs) for wound healing.
- The study demonstrated significant improvements in collagen deposition and skin cell regeneration within 14 to 21 days post-treatment, suggesting that AMS-Col gels could be a valuable tool for advancing regenerative medicine.
Article Synopsis
- Copper (Cu) excess is common in old Citrus orchards, and this study focused on understanding how this affects root exudates and plant tolerance to Cu in sweet orange seedlings.
- The research examined how varying Cu concentrations (0 to 5000 μM) impacted Cu uptake, root exudate composition, solution pH, and signs of stress in the plants.
- Findings revealed that lower Cu concentrations led to increased root alkalization and exudate release, which are critical for enhancing Cu tolerance, while higher concentrations resulted in higher Cu accumulation and greater stress indicators.
Article Synopsis
- The study explored how pH levels interact with aluminum toxicity in sweet orange roots, focusing on energy-rich compounds, metabolites, and phytohormones.
- Findings revealed that while aluminum toxicity reduced total energy-rich compounds at a pH of 4.0, it did not significantly affect them at pH 3.0, indicating that higher pH levels might help the roots adapt to aluminum stress.
- Increased pH levels were linked to improved nutrient utilization and changes in hormone levels, suggesting that managing pH could help mitigate the harmful effects of aluminum on root health.
Article Synopsis
- In China, nitrogen deficiency in Citrus orchards leads to reduced yields and lower fruit quality, prompting a study on the metabolic responses of Citrus sinensis to N-deficiency.* -
- The experiment involved varying nitrogen concentrations supplied to 'Xuegan' seedlings over 10 weeks, revealing that N-deficiency influenced carbon and nitrogen distribution, enhancing root weight and nitrogen use efficiency while altering carbohydrate levels.* -
- Results showed that with N-deficiency, leaves had lower starch but higher sucrose ratios, while roots stored more starch, indicating adaptive metabolic shifts in response to nitrogen availability in the plants.*
Article Synopsis
- * Low pH negatively impacted photosynthesis by impairing light reaction and carbon fixation, leading to reduced carbon metabolism and ATP production, while some adaptive responses to phosphate and oxidative stress were observed.
- * Although low pH prompted certain antioxidant responses and gene expressions to mitigate damage, it ultimately disrupted the balance of reactive oxygen species, resulting in oxidative stress and potential damage to the leaves.
Article Synopsis
- The study investigates how different pH levels interact with aluminum (Al) in affecting gene expression and metabolite profiles in Citrus sinensis seedlings.
- It finds that a higher pH (4.0) reduces the harmful effects of Al, evidenced by less callose accumulation and more differentially expressed genes and metabolites than a lower pH (3.0).
- The research suggests that increased pH helps improve root responses to Al-toxicity by maintaining phosphate and energy balance, managing reactive oxygen species, and boosting the levels of beneficial secondary metabolites.
Article Synopsis
- Xuegan seedlings were exposed to different levels of copper (Cu) and boron (B) to study the effects of Cu-toxicity on plant growth and nutrient uptake over a 24-week period.
- Cu-toxicity resulted in increased Cu concentration in plant tissues, reduced uptake of essential nutrients, and significant root damage, which worsened the plants' overall health and function.
- Supplementation of boron was found to mitigate the harmful effects of Cu-toxicity by decreasing Cu uptake, improving nutrient balance and water status, and enhancing the plants' physiological performance, as indicated by better leaf function and photosynthesis measurements.
Article Synopsis
- * Boron deficiencies or toxicities lead to negative effects in plants, particularly noted in citrus orchards where they cause canopy atrophy and fruit deterioration.
- * The paper reviews various effects of B stresses on growth, photosynthesis, nutrient absorption, and metabolic processes, while also highlighting boron's beneficial role in enhancing plant stress tolerance and suggesting areas for future research.*