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Metabolome and RNA-seq reveal discrepant metabolism and secretory metabolism profile in skeletal muscle between obese and lean pigs at different ages

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Science China Life Sciences 2025年

作者： Liu Guo Junfei Xu Wenyue Zhou Sisi Chen Hanjing Shi Mengmeng Han Zekun Yang Yehui Duan Weijun Pang Yulong Yin Fengna Li Laboratory of Animal Nutritional Physiology and Metabolic Process Key Laboratory of Agro-ecological Processes in Subtropical Region Institute of Subtropical Agriculture Chinese Academy of Sciences University of Chinese Academy of Sciences Laboratory of Animal Fat Deposition and Muscle Development College of Animal Science and Technology Northwest A&F University College of Advanced Agricultural Sciences University of Chinese Academy of Sciences

Metabolites and metabolism-related gene expression profiles in skeletal muscle change dramatically under obesity, aging and metabolic disease. Since obese and lean pigs are ideal models for metabolic research. Here, we compared metabolome and transcriptome of Longissimus dorsi(LD) muscle between Taoyuan black(TB, obese) and Duroc(lean) pigs at different ages. We defined the “window phase” of intramuscular fat(IMF) deposition in TB pig, which has significantly higher IMF than Duroc pig. Our results displayed discrepant lipid composition and different expression genes(DEGs) enriched in lipid metabolism, and both metabolome and transcriptome analyses revealed stronger energy expenditure and more active amino acid and protein metabolism in Duroc pig. 10 up-and 51 down-regulated biomarker metabolites with age-and breed-specificity were identified. Potential secretory metabolites, including organic acid(fumaric acid, succinate,malic acid, and gamma-aminobutyric acid), amino acid(L-lysine, and L-glutamic acid), lipid(2-hydroxyisovaleric acid, and L-carnitine) were demonstrated a significant correlation with IMF deposition. Our research highlights the huge difference of metabolic spectrum in skeletal muscle between obese and lean model and muscle-derived secretory metabolites might act as an ambassador of intercellular communication to regulate systematic metabolism.

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Primary Study on Effects of New Rare Earth agro-Materials on Potato

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Journal of Rare Earths 2004年第z1期22卷 265-268页

作者： Yang Qifeng Mao Wanhu Wang Jiachen Xing Guo Yang Jun Liu Xiangsheng Gansu Provincial agro-Technique Extension Centre Lanzhou 730020 China Gansu Provincial Agro-Technique Extension Centre Lanzhou 730020 China National Rare Earth Centre for Agriculture Beijing 100088 China DingXi County Agro-Technology Extension Centre Gansu 730008China National Rare Earth Centre for Agriculture Beijing 100088 China National Rare Earth Centre for Agriculture Beijing 100088 China

Using common phosphate as a check, we studied the growth and yield of potato by new rare earth agro-materials including rare earth phosphate (base fertilizer), rare earth whole plant nutrient fertilizer, and amino acid chelated rare earth ( top dressing), which were used in a single or mixed way in Dingxi city, Gansu *** results are as follows that ( 1 ) After using new rare earth materials, the plant height increases by 0.4 ～ 5.6 cm and the ripen period is delayed by 4 ～ 9 d.(2) They can improve the potato economic characteristics, enhance productivity, decrease black leg and late *** disease index is decreased by 1.6% ～ 10.6%, single plant potato number increases by 0.3 ～ 0.5, and single plant yield increases by 80 g ～ 130 g.(3) The effect of increased yield is significant, and mixed use is better than single *** the single material treatments, rare earth phosphate is the best, rare earth whole plant nutrient fertilizer and amino acid chelated rare earth are the second, and the increased rate are 14.5%, 8.4%, 9.2% so the material mixture-rare earth phosphate mixed of rare earth whole plant nutrient fertilizer or with amino acid chelated rare earth is economically useable, and increase rate are 25.2% and 24.4% compared with common phosphate.

关键词： potato economic characteristics diseases yield economic useable

Surface embedded binary Co-Cu hydroxy phosphate over surface of oxy/hydroxides for efficient nitrate reduction to ammonia

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Nano Research 2025年第1期18卷 195-207页

作者： Chun Zhu Yifei Yang Yike Jing Zhen Zeng Xuesong Yi Wei Sun Fei Yang Key Laboratory of agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province School of Environmental Science and EngineeringHainan UniversityHaikou 570228China

Electrochemical nitrate reduction reaction(NO3RR)to ammonia is a promising approach to address excess Ncontamination in aqueous environment but suffers from a limited ammonia yield and selectivity due to the low concentration and sluggish *** work reports a three-dimensional porous electrode with binary Co_(2)Cu_(1)hydroxy phosphate embedded into the surface of Ni_(3)Co_(1)oxy/hydroxides(CoCu-PH@NiCo/Ni,“PH”means phosphate-hydroxide),which delivers a yield of 4.13 mg·h^(-1)·cm^(-2)with a high Faraday efficiency of 92.6%under a low nitrate concentration of 40 mM and provide an impressive *** embedded structure of the as-prepared catalyst exhibits unique metal coordination ligands and valence states different from the unitary *** electrochemical in situ infrared spectra and theoretical calculations revealed that the Co sites with the ability to dissociate water molecular to form adsorbed OH*can effectively provide the required protons for the deoxygenation and hydrogenation steps during NO3-conversion,thereby,effectively reducing the energy barrier of the key transition states in the NO3RR process to improve the intrinsic *** demonstrate that the rational design of binary components with the appropriate ability to activate water molecules as well as the threedimensional porous skeletal structure are expected to promote effectively the low-concentration nitrates conversion to ammonia.

关键词： nitrate reduction hydroxy phosphate surface embedded water dissociation active hydroxy adsorbed

N Cycle, N Flow Trends in Japan, and Strategies for Reducing N_2O Emission and NO_3^- Pollution

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Pedosphere 2005年第2期15卷 164-172页

作者： K.MINAMI National Institute for agro-Environmental Sciences

To feed an increasing population, large amounts of chemical nitrogen fertilizer have been used to produce much of our food, feed and fiber thereby increasing nitrogen levels in soils, natural waters, crop residues, livestock wastes,and municipal and agricultural wastes, with national and international concern about its potential adverse effects on environmental quality and public health. To understand these phenomena and problems, first the nitrogen cycle and the environment are described. Then recent trends for nitrogen cycling through the food and feed system, N2O emissions from fertilized upland and paddy soils, and NO-3 pollution in ground water in Japan are reported. Finally, mitigation strategies in Japan for reducing N2O emission and NO-3 pollution are proposed, including nitrification inhibitors, controlled release fertilizers, utilization of plant species that could suppress nitrification, utilizing the toposequence, government policy, and appropriate agricultural practices. Of all the technologies presented, use of nitrification inhibitors and controlled release fertilizers are deemed the most important with further development of these aspects of technologies being expected. These practices, if employed worldwide, could help reduce the load, or environmental deterioration, on the Earth's biosphere.

关键词： mitigation strategy N2O emission NO3- pollution nitrogen cycle

Mycotoxin detection——Recent trends at global level

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Journal of Integrative Agriculture 2015年第11期14卷 2265-2281页

作者： Jonathan Nimal Selvaraj ZHOU Lu WANG Yan ZHAO Yue-ju XING Fu-guo DAI Xiao-feng LIU Yang Institute of agro-Products Processing Science and Technology Chinese Academy of Agricultural SciencesKey Laboratory of Agro-Products ProcessingMinistry of Agriculture

Mycotoxin contamination in agro-food systems has been a serious concern globally during the last few decades. Mycotoxins are toxic secondary metabolites produced by fungi when they grow in agro-food products and feedstuff. Several detection techniques have been developed in recent years to detect mycotoxins in the food and feed effectively. HPLC based tech- niques are very common in usage in the laboratories for the testing of mycotoxins. In recent years, immuno-based assays is widely used and have been reported at large due to its sensitivity and limited detection time. Immuno assay-based kits were developed effectively to be used in the fields and in storage systems to detect the mycotoxin levels. Microarray-based immunoassays developed in the recent years could simultaneously detect afiatoxin, ochratoxin, and zearalenone with the higher sensitivity. Aptamer-based assays could target the detection of ochratoxin and aflatoxins and fumonisins at high specificity in food products. In recent years, several assays reported for the simultaneous multiple detection of different mycotoxin was based on HPLC and LC-MS/MS. There is a need for the use of these advanced technologies in the com- mercial scale.

关键词： mycotoxins aflatoxins ochratoxin zearalenone assays detection

Effects of Cultivar on Phenolic Content and Antioxidant Activity of Naked Oat in China

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Journal of Integrative Agriculture 2014年第8期13卷 1809-1816页

作者： TONG Li-tao LIU Li-ya ZHONG Kui WANG Yan GUO Li-na ZHOU Su-mei Institute of agro-Products Processing Science and Technology Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products ProcessingMinistry of Agriculture

To evaluate the effects of naked oat cultivars on their phenolic contents and antioxidant activities, the oat seeds from 21 different cultivars in China were collected, and their major nutritional components, compositions of polyphenols, and antioxidant activities were measured. As the results, oat cultivars affected its phenolic composition and antioxidant activity significantly. Vanillin, chlorogenic acid, ferulic acid, avenanthramide C（Bc）, avenanthramide A（Bp）, and avenanthramide B（Bf） in oat polyphenols extracts were detected in all cultivars of oat, while caffeic acid, p-coumaric acid and rutin were partly detected. All oat cultivars showed significant free radical scavenging activity, although their activities were lower than that of vitamin C（VC）. Different oat varieties showed different antioxidant activities, among which Yanke 1 had the best ability to scavenge ·OH（（58.78±1.99） μg mL-1）, Baiyan 10 showed the strongest DPPH·（（22.00±0.43） μg mL-1） and ABTS·＋（（6.92±0.44） μg mL-1） scavenging activity, and Dingyou 1 showed good scavenging ability of DPPH·（（22.71±0.42） μg mL-1） and ·OH（（81.50±1.73） μg mL-1）. In addition, the correlation coefficients of contents between the major nutritional components in different cultivars of oat and phenolic compounds indicated that determination of main nutrients could be used as an easy technique to evaluate approximately the contents and compositions of oat polyphenols, which simplifies the selection of good oat cultivar.

关键词： oat phenolics cultivar antioxidant

Responses of plant diversity and primary productivity to nutrient addition in a Stipa baicalensis grassland, China

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Journal of Integrative Agriculture 2015年第10期14卷 2099-2108页

作者： YU Li SONG Xiao-long ZHAO Jian-ning WANG Hui BAI Long YANG Dian-lin agro-Environmental Protection Institute Ministry of Agriculture College of Horticulture Shenyang Agricultural University Key Laboratory of Original agro-Environment Quality Ministry of Agriculture

Nutrient addition can affect the structure and diversity of grassland plant communities, thus alter the grassland productivity. Studies on grassland plant community composition, structure and diversity in response to nutrient addition have an important theoretical and practical significance for the scientific management of grassland, protection of plant diversity and the recovery of degraded grassland. A randomized block design experiment was conducted with six blocks of eight treatments each： control（no nutrient addition） and K, P, N, PK, NK, NP, and NPK addition. We evaluated plant composition, height, coverage, density, and aboveground biomass to estimate primary productivity and plant diversity. Results showed that all treatments increased primary productivity significantly（P〈0.05） with the exception of the K and the NPK treatments had the greatest effect, increasing aboveground biomass 2.46 times compared with the control（P〈0.05）. One-way ANOVA and factorial analysis were used for the species richness, Shannon-Wiener index, Pielou index and aboveground biomass, and the relationships between the diversity indices and aboveground biomass were determined through linear regression. We found that fertilization altered the community structure; N（but not P or K） addition increased the proportion of perennial rhizome grasses and significantly reduced that of perennial forbs（P〈0.05）, thus it presented a trend of decrease in species richness, Shannon-Wiener and Pielou indexex, respectively. Only the main effects of N had significant impacts on both the diversity indices and the aboveground biomass（P〈0.05）, and the interactions between N-P, N-K, P-K and N-P-K could be neglected. With fertilization, plant diversity（correlation coefficient, –0.61）, species richness（–0.49）, and species evenness（–0.51） were all negatively linearly correlated with primary productivity. The correlations were all significant（P〈0.01）. Scientific nutrient management is an effective way to improve

关键词： aboveground biomass nitrogen phosphorus plant diversity potassium temperate meadow steppe

Derivation of soil Pb/Cd/As thresholds for safety of vegetable planting: A case study for pakchoi in Guangdong Province,China

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Journal of Integrative Agriculture 2019年第1期18卷 179-189页

作者： LI Fu-rong WEN Dian WANG Fu-hua SUN Fang-fang WANG Xu DU Ying-qiong LIU Xiang-xiang WAN Kai Public Monitoring Center for agro-product of Guangdong Academy of Agricultural Sciences/Key Laboratory of Testing and Evaluation for agro-product Safety and Quality Ministry of Agriculture/Laboratory of Quality & Safety Risk Assessment for Agro-product (Guangzhou)Ministry of Agriculture

Regional guidelines for soil heavy metals,in conjunction with specific crops,are proposed to better assess soil environmental *** this study,large amounts of soils with different levels of Pb/Cd/As pollution were collected in Guangdong Province,China,to carry out a pot experiment,which was closer to the actual situation and properties of the heavy metal contaminated *** the widely planted vegetable pakchoi as the research object,we analyzed the correlations between the Pb/Cd/As concentrations in pakchoi and the total or available soil Pb/Cd/As concentrations and established their optimal regression *** then,the total and available soil Pb/Cd/As thresholds for pakchoi were calculated according to the allowable Pb/Cd/As limits in pakchoi and were compared with the current soil assessment ***,a lot of paired vegetable-soil samples in field were collected and their pollution situations were assessed by both the current limit thresholds and the calculated ***,it was more consistent to assess the Cd and As pollution situation of the vegetable and soil samples with the calculated soil thresholds than the current soil assessment *** further proved that it was necessary to explore the soil heavy metal thresholds for safety of vegetable in specific regions,which would be more scientific and practical to guide safety production of local agricultural products and effective utilization of soil resources.

关键词： heavy metal pollution available content soil threshold correlation analysis vegetable

Effect of moisture regime on the redistribution of heavy metals in paddy soil

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Journal of Environmental Sciences 2011年第3期23卷 434-443页

作者： Shunan Zheng Mingkui Zhang Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant Nutrition College of Environmental and Resource Sciences Zhejiang University IIangzhou 310029 China agro-Environmental Protection Institute Ministry of Agriculture Tianjin 300191 China Key Laboratory of Production Environment and agro-product Safer Ministry of Agriculture Tianjin 300191 China Tianjin Key Laboratory of agro-environment and agro-product Safety Tianjin 300191 China

Sequential extraction procedure was applied to assess the dynamics of solid-phase transformation of added Cu, Pb, Cd, and Hg in a typical Chinese paddy soil incubated under three moisture regimes （75% field capacity, wetting-drying cycle, and flooding）. The heavy metals spiked in the soil were time-dependently transferred from the easily extractable fraction （the exchangeable fraction） into less labile fractions （Fe-Mn oxide- and organic matter-bound fractions）, and thus reduced lability of the metals. No significant changes were found for the carbonate-bound and residual fractions of the heavy metals in the soil during the whole incubation. Change rate of the mobility factor （MF）, a proportion of weakly bound fractions （exchangeable and carbonate-bound） in the total metal of soil, reflected the transformation rate of metal speciation from the labile fractions toward stable fractions. It was found that soil moisture regime did not change the direction and pathways of transformation of metal speciation, but it significantly affected the transformation rate. In general, the paddy soil under flooding regime had higher metal reactivity compared with 75% field capacity and wetting-drying cycle regimes, resulting in the more complete movement of metals toward stable fractions. This might be related to the increased pH, precipitation of the metals with sulfides and higher concentration of amorphous Fe oxides under submerged condition.

关键词： heavy metal speciation moisture regime redistribution paddy soil