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Diversity and functional analysis of Chinese bumblebee gut microbiota reveal the metabolic niche and antibiotic resistance variation of Gilliamella

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Insect science 2021年第2期28卷 302-314页

作者： Zi-Jing Zhang Ming-Fei Huang Li-Fei Qiu Rui-Hao Song Zi-Xuan Zhang Yi-Wen Ding Xin Zhou Xue Zhang Hao Zheng college of food science and nutritional engineering China Agricultural UniversityBeijingChina college of Plant Protection China Agricultural UniversityBeijingChina

Bumblebees play an important role in maintaining the balance of natural and agricultural ecosystems,and the characteristic gut microbiota of bumblebees exhibit significant mutualistic *** has the highest diversity of bumblebees;however,gut microbiota of Chinese bumblebees have mostly been investigated through cultureindependent ***,we analyzed the gut communities of bumblebees from Sichuan,Yunnan,and Shaanxi provinces in china through 16S ribosomal RNA amplicon sequencing and bacterial *** revealed that the bumblebees examined in this study harbored two gut enterotypes as previously reported:one is dominated by Gilliamella and Snodgrassella,and the other is distinguished by prevalent environmental *** gut compositions obviously varied among different individual *** then isolated 325 bacterial strains and the comparative genomic analysis of Gillianiella strains revealed that galactose and pectin digestion pathways were conserved in strains from bumblebees,while genes for the utilization of arabinose,mannose,xylose,and rhamnose were mostly *** two strains from the Chinese bumblebees possess the multidrug-resistant gene emrB,which is phylogenetically closely related to that from the symbionts of soil entomopathogenic *** contrast,tetracycline-resistant genes were uniquely present in three strains from the *** results illustrate the prevalence of strain-level variations in the metabolic potentials and the distributions of antibiotic-resistant genes in Chinese bumblebee gut bacteria.

关键词： antibiotic resistance bumblebee Gilliamella.,gut microbiota sugar metabolism

Effects of 1-methylcyclopropene treatment on the quality of red‘Fuji’apples fruit during short-term storage

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food Quality and Safety 2023年第1期7卷 63-74页

作者：彭贞贞傅达奇 Laboratory of Fruit Biology College of Food Science and Nutritional EngineeringChina Agricultural UniversityBeijingChina

Objectives:The aim of this study is to determine the mechanism through which 1-methylcyclopropene(1-MCP)affects the quality of red'Fuji'apples,which were stored for a short *** and Methods:Red‘Fuji’apples were treated with 1-MCP(1.0μl/L),stored at 25℃for0,12,24,48,72,and 96 h,and ethylene pro-duction was *** integrated metabolomic and transcriptomic analysis was performed on apples stored for 24 ***:The release of ethylene was significantly delayed from red‘Fuji’apples subjected to 1-MCP *** performing an integrated transcriptome and metabolome analyses,we identified 117 differentially expressed genes(DEGs)and 44 differentially accumulated metabol-ites(DAMs).By performing functional enrichment analysis,we found that DEGs were involved in the following pathways;carbon metabolism(LPD2,gpmA,LTA2,ACC,PSAT1,MdCAS2),phytohormone signal transduction(EBF 7),amino acid metabolism(MdACS-1),fatty acid metab-olism(LOX1.5,KCS4,KAST),energy metabolism(Lhcb1,Lhcb6,PsbY,GPDHC1,PUMP5I,metabolic pathways(TRE1,HEXO1)and cell wall metabolism(CSLG2).Thus,these DEGs were involved in the ripening of fruits,and they controlled the quality of fruits at the post-harvest *** metabolites were enriched with *** were found to be individually involved in the metabolic pathway,secondary metabolite bio-synthesis,phenylpropanoid biosynthesis,flavonoids,and flavonol ***:The results indicate that 1-MCP inhibits the biosynthesis of ethylene and suppresses energy ***,it also downregulates metabolic pathways and the enzymatic genes related to fruit ***,1-MCP delays the ripening of fruits at the post-harvest *** study helps us understand how 1-MCP treatment affects the ripening and quality of fruits.

关键词： Red‘Fuji’apple 1-methylcyclopropene metabolome transcriptome.

Assessment and distinction of commercial soy protein isolate product functionalities using viscosity characteristic curves

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Chinese Chemical Letters 2012年第9期23卷 1051-1054页

作者： Jing Ting Xu He Liu Jian Hua Ren Shun Tang Guo college of food science&nutritional engineering China Agricultural UniversityChina Beijing 100083

To simplify the assessment method of soy protein isolate （SPI） functionalities, the viscosity and functionalities of commercial SPI products were studied. Viscosity value （y） increases With increasing concentration （x） and exhibits a highly significant correlation with the exponential equation y = a. ebx. The b values of products are gradually enhanced from dispersion, emulsion and injected to gel type. Products with low b values （〈0.2）, and high dispersivity were dispersion-type. Products having high b values （〉0.4） and gel springiness were gel-type. The other products with centered b value （0.2-0.4）, high solubility and emulsifying capacity were emulsion-type.

关键词： Soy protein isolate Functional properties Viscosity curve

Comparative study on cultivation of microalgae for nutrient removal and lipid production in different artificial wastewaters

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International Journal of agricultural and Biological engineering 2017年第1期10卷 107-114页

作者： Hao Rui Yu Zhen Li Jinchen Gao Min Ma Weiling Zhu Yi college of food science and nutritional engineering China Agricultural UniversityBeijing 10083China

Wastewater contains high concentration of nutrients,like nitrogen and phosphorus,which have been identified as the main reasons for water eutrophication and serious ecological ***,cultivating a tolerant and adaptive microalgae strain in wastewater is considered as a promising approach for sustainable biomass/lipid *** potential usages of Desmodesmus *** biomass and lipid production within different artificial wastewater(AW)were investigated and the removal efficiencies of nutrient were *** maximum removal rate of chemical oxygen demand,ammonia nitrogen,nitrate nitrogen and phosphate were 272 mg/(L·d),14.021 mg/(L·d),7.774 mg/(L·d)and 3.347 mg/(L·d),respectively in AW2,AW3,AW5 and *** biomass(1.159 g/L)and lipid(280 mg/L)productions were observed in AW5,while the highest lipid content achieved was 37.42%in *** acid analysis showed that lipids extracted from AW-cultivated Desmodesmus *** 59.57%-77.79%polyunsaturated fatty acids(30.6%-44.47%was linoleic acid).

关键词： microalgae Desmodesmus sp. artificial wastewater nutrient removal biomass production lipid production

Epigenetics in the modern era of crop improvements

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science china Life sciences 2025年

作者： Yan Xue Xiaofeng Cao Xiangsong Chen Xian Deng Xingwang Deng Yong Ding Aiwu Dong Chengguo Duan Xiaofeng Fang Lei Gong Zhizhong Gong Xiaofeng Gu Chongsheng He Hang He Shengbo He Xinjian He Yan He Yuehui He Guifang Jia Danhua Jiang Jianjun Jiang Jinsheng Lai Zhaobo Lang Chenlong Li Qing Li Xingwang Li Bao Liu Bing Liu Xiao Luo Yijun Qi Weiqiang Qian Guodong Ren Qingxin Song Xianwei Song Zhixi Tian Jiawei Wang Yuan Wang Liang Wu Zhe Wu Rui Xia Jun Xiao Lin Xu Zhengyi Xu Wenhao Yan Hongchun Yang Jixian Zhai Yijing Zhang Yusheng Zhao Xuehua Zhong Daoxiu Zhou Ming Zhou Yue Zhou Bo Zhu Jiankang Zhu Qikun Liu college of Life sciences Institute of Life Science and Green Development Hebei University Biotechnology Research Institute Chinese Academy of Agricultural Sciences college of Biology Hunan Key Laboratory of Plant Functional Genomics and Developmental Regulation Hunan Engineering and Technology Research Center of Hybrid Rapeseed Hunan University Institute of Advanced agricultural sciences School of Advanced Agricultural Sciences Peking University State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources Guangdong Laboratory for Lingnan Modern Agriculture South China Agricultural University National Institute of Biological sciences Key Laboratory of Seed Innovation Institute of Genetics and Developmental Biology Chinese Academy of Sciences School of Advanced agricultural sciences Peking-Tsinghua Center for Life Sciences Peking University Synthetic and Functional Biomolecules Center Beijing National Laboratory for Molecular Sciences Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education College of Chemistry and Molecular Engineering Peking University Key Laboratory of Seed Innovation State Key Laboratory of Plant Genomics and National Center for Plant Gene Research Institute of Genetics and Developmental Biology Chinese Academy of Sciences State Key Laboratory of Wheat Improvement Peking University Institute of Advanced Agricultural Sciences Shandong Laboratory of Advanced Agricultural Sciences in Weifang State Key Laboratory of Crop Stress Adaptation and Improvement School of Life Sciences Henan University State Key Laboratory of Maize Bio-breeding National Maize Improvement Center Department of Plant Genetics and Breeding China Agricultural University Frontiers science Center for Molecular Design Breeding China Agricultural University Center for Crop Functional Genomics and Molecular Breeding China Agricultural University Sanya Institute of china agricultural university Hainan Yazhou Bay Seed Laboratory Institute of Advan

Epigenetic mechanisms are integral to plant growth, development, and adaptation to environmental stimuli. Over the past two decades,our comprehension of these complex regulatory processes has expanded remarkably, producing a substantial body of knowledge on both locus-specific mechanisms and genome-wide regulatory patterns. Studies initially grounded in the model plant Arabidopsis have been broadened to encompass a diverse array of crop species, revealing the multifaceted roles of epigenetics in physiological and agronomic traits. With recent technological advancements, epigenetic regulations at the single-cell level and at the large-scale population level are emerging as new focuses. This review offers an in-depth synthesis of the diverse epigenetic regulations, detailing the catalytic machinery and regulatory functions. It delves into the intricate interplay among various epigenetic elements and their collective influence on the modulation of crop traits. Furthermore, it examines recent breakthroughs in technologies for epigenetic modifications and their integration into strategies for crop improvement. The review underscores the transformative potential of epigenetic strategies in bolstering crop performance, advocating for the development of efficient tools to fully exploit the agricultural benefits of epigenetic insights.

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The role of gut microbiota and its metabolites short-chain fatty acids in food allergy

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food science and Human Wellness 2023年第3期12卷 702-710页

作者： Chen Chen Chenglong Liu Ke Zhang Wentong Xue college of food science and nutritional engineering China Agricultural UniversityBeijing 100083China

Emerging evidence indicated that the increase in food allergy(FA)over the past few decades was associated with the abnormal compositional and metabolic changes of gut *** microbiota played a vital role in maintaining the homeostasis of the immune system and the dysbiosis of gut microbiota promoted the occurrence of *** research suggested that short-chain fatty acids(SCFAs),the main metabolites derived from gut microbiota,contributed to FA ***,we provided a comprehensive review on the relationship between gut microbiota and *** multifaceted mechanisms underlymg beneficial effects of gut microbiota composition/metabolites on the regulation of diverse cellular pathways in intestinal epithelial cells,dendritic cells,innate lymphoid cells,T cells,B cells and mast cells in the immune system were discussed *** findings emphasized the positive function of gut microbiota in FA and provided novel ideas for the treatment or prevention of FA in the future.

关键词： Gut microbiota Composition Short-chain fatty acids Immune system food allergy

MicroRNAs in tomato plants

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science china(Life sciences) 2011年第7期54卷 599-605页

作者： ZUO JinHua WANG YunXiang LIU HaiPing MA YuanZheng JU Zheng ZHAI BaiQiang FU DaQi ZHU Yi LUO YunBo ZHU BenZhong college of food science and nutritional engineering China Agricultural University Beijing 100083 China

MicroRNAs (miRNAs) are a specialized class of small silencing RNAs that regulate gene expression in *** plants,miRNAs negatively regulate target mRNAs containing a highly complementary sequence by either mRNA cleavage or translational *** a model plant to study fleshy fruit ripening,miRNA studies in tomato have made great progress *** were predicted to be involved in nearly all biological processes in tomato,particularly development,differentiation,and biotic and abiotic stress ***,several miRNAs were verified to be involved in tomato fruit ripening and *** studies suggest that miRNAs are related to host-virus interactions,which raises the possibility that miRNAs can be used as diagnostic markers for response to virus infection in tomato *** this review,we summarize our current knowledge systematically and advance future directions for miRNA research in tomato.

关键词： microRNAs tomato research methods target gene prediction functional analysis

Osteogenic peptides in collagen hydrolysates:Stimulate differentiation of MC3T3-E1 cells viaβ1 integrin-FAK-ERK1/2 signaling pathway and Smad1 protein

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food Bioscience 2022年第3期47卷 1368-1377页

作者： Yibo Liu Shiming Li Hui Liu Bo Li college of food science and nutritional engineering China Agricultural UniversityBeijing100083China

Our previous study demonstrated that orally administration of collagen hydrolysates from silver carp skin(SCH)could increase bone remodeling in chronologically aged ***,the active compounds and molecular mechanism were still *** this study,SCH showed strong activity in promoting osteogenic differentiation of MC3T3-E1 cells and the active components in it were separated by ultrafiltration and YMC ODS-A C18 *** then,a series of peptides containing potential osteogenic sequences were identified by LC-MS/MS and two novel peptides,GARGDKGETGEAGE(GE-14)and TGPRGPVGPA(TA-10),were synthesized for further *** results indicated that peptides GE-14 and TA-10 could promote the differentiation and mineralization of MC3T3-E1 cells by positively regulatingβ1 integrin-FAK-ERK1/2 and Smad1 pathway,which might be due to the RGD or GPR sequences in *** findings suggest that SCH has the potential to be developed as an effective diet supplement to prevent osteoporosis.

关键词： Silver carp skin Collagen hydrolysates Osteogenic activity MC3T3-E1 β1 integrin

Effect of thermal processing and fermentation with Chinese traditional starters on characteristics and allergenicity of wheat matrix

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food science and Human Wellness 2023年第3期12卷 789-794页

作者： Huan Rao Xi Li Wentong Xue college of food science and Biology Hebei University of Science and TechnologyShijiazhuang 050018China college of food science and nutritional engineering China Agricultural UniversityBeijing 100083China

Wheat allergy has become a serious health threat worldwide and its prevalence has increased alarmingly in the past few *** such as food matrix and food processing may alter the structure of wheat proteins,and hence affect its allergenic ***,few reports have focused on the influence of Chinese traditional starter fermentation on wheat *** this study,5 starters from different regions of china were used for fermentation,and protein characteristics were monitored by sodium dodecyl sulfate polyacrylamide gel electropheresis,and immunoreactivity analyzed by immunoassay with allergenic serum was obtained from New Zealand white *** allergenicity of steamed and baked matrices was also *** results showed that the allergenicity of wheat dough was basically increased at the beginning and then decreased during fermentation,but specific trends depend on different *** the progress of fermentation,especially as pH value decreased to 3.0-4.0,the allergenicity decreased *** and steaming can reduce the allergenicity of wheat matrix,but fermentation is not a key factor affecting the allergenic activity of *** results can provide a theoretical basis for controlling wheat allergenicity in food proces sing or producing hypoallergenic food.

关键词： Chinese traditional starter ermentation characteristics Thermal processing Allergenicity Wheat matrix