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Taxonomic dependency and spatial heterogeneity in assembly mechanisms of bacteria across complex coastal waters

Ecological Processes 2024年第1期13卷 80-97页

作者： Huizhen Yan Dandan Lin Gaoke Gu Yujie Huang Xuya Hu Zhenhao Yu Dandi Hou Demin Zhang Barbara J.Campbell Kai Wang state key laboratory for managing biotic and chemical threats to the quality and safety of agro-products School of Marine SciencesNingbo University key laboratory of Marine Biotechnology of Zhejiang Province School of Marine Sciences Ningbo University Department of Biological Sciences Clemson University

Background Understanding community assembly mechanisms across taxa and space is fundamental for microbial ecology. However, the variability and determinants of assembly processes over taxa and space remain unclear. Here, we investigated taxonomic dependency and spatial heterogeneity in bacterial assembly mechanisms across coastal waters in the East China Sea using neutral and null models with customized visualization *** Overall, bacterial assembly mechanisms varied across broad taxonomic groups(phyla and proteobacterial classes) and space at the regional scale. A determinism–stochasticity balanced mechanism governed total bacterial assembly, while taxonomic dependency existed in assembly mechanisms and ecological processes. Among community ecological features, niche breadth and negative-to-positive cohesion ratio were strongly associated with the determinism-to-stochasticity ratio of bacterial groups. Bacterial assembly mechanisms commonly exhibited spatial heterogeneity, the extent and determinants of which varied across taxonomic groups. Spatial assembly of total bacteria was directly driven by many environmental factors and potential interactions between taxa, but not directly by geographic factors. Overall, the bacterial groups with higher spatial heterogeneity in assembly mechanisms were more related to environmental and/or geographic factors(except Bacteroidetes), while those with lower heterogeneity were more related to ecological *** Our results confirm the pervasiveness of taxonomic dependency and spatial heterogeneity in bacterial assembly, providing a finer understanding about regulation across complex coastal waters.

关键词： Bacterioplankton Assembly mechanism Niche breadth Null model Environmental gradient Biogeography

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Sodium butyrate alleviates fructose-induced non-alcoholic fatty liver disease by remodeling gut microbiota to promoteγ-amino butyric acid production

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Food Science and Human Wellness 2024年第2期13卷 961-971页

作者： Qu Chen Lei Wu Aijia Zhang Chen Wu Liuping Cai Yingping Xiao Yingdong Ni key laboratory of Animal Physiology and Biochemistry Ministry of Agriculture and Rural AffairsNanjing Agricultural UniversityNanjing 210095China state key laboratory for managing biotic and chemical threats to the quality and safety of agro-products Institute of Agro-product Safety and NutritionZhejiang Academy of Agricultural SciencesHangzhou 310022China

Sodium butyrate(NaB)can regulate lipid metabolism and inhibit hepatic *** study aimed to investigate whether NaB can alleviate fructose-induced hepat ic steatosis via remodeling the gut microbiota and evaluate the anti-fatty liver *** results showed that NaB and NaB-remodeled gut microbiota significantly alleviated fructose-induced hepatic steatosis and increased plasma uric acid and fructose ***,both NaB and NaB-remodeled gut microbiota increased the abundance of Lactobacillus and altered the levels of plasma amino acids(upregulating gamma-amino butyric acid(GABA)and downregulating L-glutamic acid and L-arginine)in fructose-exposed *** correlation analysis showed that GABA levels positively correlated with Lactobacillus abundance,and increased GABA levels might promote the reduction of the hepatic triglyceride *** studies confirmed that GABA significantly reduced lipid deposition in mouse hepatocytes induced via fructose pretreatment in *** findings suggested that NaB could ameliorate fructose-induced hepatic steatosis by regulating gut microbiota.

关键词： Butyrate Fructose Gut microbiota Hepatic steatosis

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Tuna dark muscle peptides modulate host iron metabolism in the intestine through the gut microbiota and ameliorate iron deficiency anemia

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Food Science and Human Wellness 2024年

作者： Jiaojiao Han Jiayi Xiong Zhixiang Bai Yang Qin Chenyang Lu Jun Zhou Ye Li Tinghong Ming Zhen Zhang Xiurong Su state key laboratory for managing biotic and chemical threats to the quality and safety of agro-products， Ningbo University School of Marine Science， Ningbo University

Iron deficiency anemia (IDA) is a nutritional deficiency disease with a high incidence rate worldwide. Bioactive peptides are safe and effective， have multiple functions and can serve as potential candidates for alleviating IDA. In this study， the anti-anemia effects of tuna dark muscle peptides were explored in a diet-induced IDA mouse model. The results showed that tuna dark muscle peptides alleviated the IDA phenotype， oxidative stress and iron metabolism. In addition， tuna dark muscle peptides reversed gut microbiota dysbiosis in IDA mice. Furthermore， the transplanted fecal microbiota from tuna dark muscle peptide-treated mice also alleviated IDA symptoms and regulated iron metabolism and the gut microbiota， indicating that the anti-anemic effects were at least partially mediated by the gut microbiota. Thus， we identified a new and safe prebiotic material to alleviate IDA and provided ideas for the development of peptides. At the same time， these data also provided a theoretical basis for fecal microbiota transplantation (FMT) to alleviate IDA.

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The OsBZR1-OsSPX1/2 module fine-tunes the growth-immunity trade-off in adaptation to phosphate availability in rice

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Molecular Plant 2024年第2期17卷 258-276页

作者： Yuqing He Yao Zhao Jitao Hu Lanlan Wang Linying Li Xueying Zhang Zhongjing Zhou Lili Chen Hua Wangl Jiaoyu Wang Gaojie Hong state key laboratory for managing biotic and chemical threats to the quality and safety of agro-products Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang ProvinceInstitute of Virology and BiotechnologyZhejiang Academy of Agricultural SciencesHangzhou 310021P.R.China key laboratory of Traceability for Agricultural Genetically Modified Organisms Ministry of Agriculture and Rural AffairsHangzhou 310021P.R.China College of Life Sciences Zhejiang Sci-Tech UniversityHangzhou 310018P.R.China state key laboratory for managing biotic and chemical threats to the Qualty and safety of agro-products Zhejang Academy of Agricultural SciencesHangzhou 310021P.R.China state key laboratory for managing biotic and chemical threats to the quality and safety of agro-products Key Labory of Biotechnology in Plant Protection of MOA of China and Zhejiang ProvinceInstitute of Plant Protection and MicrobiologyZhejiang Academy of Agricultural SciencesHangzhou 310021P.R.China

The growth-promoting hormones brassinosteroids(BRs)and their key signaling component BZR1 play a vital role in balancing normal growth and defense ***,we discovered that BRs and OsBZR1 up-regulated sakuranetin accumulation and conferred basal defense against Magnaporthe oryzae infection under normal *** shortages,including phosphate(Pi)deficiency,potentially disrupt this growth-defense ***1 and OsSPX2 have been reported to sense Pi concentration and interact with the Pi signal mediator OsPHR2,thus regulating Pi starvation *** this study,we discovered that OsSPX1/2 interacts with OsBZR1 in both Pi-sufficient and Pi-deficient conditions,inhibit-ing BR-responsive *** Pi is sufficient,OsSPX1/2 is captured by OsPHR2,enabling most of OsBzR1 to promote plant growth and maintain basal *** response to Pi starvation,more OsSPX1/2 is released from OsPHR2 to inhibit OsBZR1 activity,resulting in slower ***,our study reveals that the OsBZR1-SPX1/2 module balances the plant growth-immunity trade-off in *** Y.,Zhao Y.,Hu J.,Wang L.,Li L.,Zhang X.,Zhou Z.,Chen L.,Wang H.,Wang J.,and Hong G.(2024).The OsBZR1-OsSPX1/2 module fine-tunes the growth-immunity trade-off in adaptation to phosphate availability in esponse to Pi availability.

关键词： immunity maintain adaptation

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Turnip mosaic virus pathogenesis and host resistance mechanisms in Brassica

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Horticultural Plant Journal 2024年第4期10卷 947-960页

作者： Guanwei Wu Xinxin Fang Tianqi Yu Jianping Chen Fei Yan state key laboratory for managing biotic and chemical threats to the quality and safety of agro-products Institute of Plant VirologyNingbo UniversityNingboZhejiang 315211China key laboratory of Biotechnology in Plant Protection of MARA and Zhejiang Province Institute of Plant VirologyNingbo UniversityNingboZhejiang 315211China

Turnip mosaic virus(TuMV)is a devastating potyvirus pathogen that infects a wide variety of both cultivated and wild Brassicaceae *** urgently need more information and understanding of TuMV pathogenesis and the host responses involved in disease development in cruciferous *** displays great versatility in viral pathogenesis,especially in its replication and intercellular ***,in the coevolutionary arms races between TuMV and its hosts,the virus has evolved to co-opt host factors to facilitate its infection and counter host defense *** review mainly focuses on recent advances in understanding the viral factors that contribute to the TuMV infection cycle and the host resistance mechanism in ***,we propose some future research directions on TuMV pathogenesis and control strategies to design durable TuMV-resistant Brassica crops.

关键词： Turnip mosaic virus Brassica Resistance genes Host factors Infection biology

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Effect of dietary supplement of inactivated Lactobacillus plantarum Ep-M 17 on growth performance,immune response,disease resistance,and intestinal microbiota in Penaeus vannamei

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Journal of Oceanology and Limnology 2024年第2期42卷 676-694页

作者： Ting WU Xiaoman HU Wenlong XU Yang DU Jiong CHEN state key laboratory for managing biotic and chemical threats to the quality and safety of agro-products Ningbo UniversityNingbo 315211China laboratory of Biochemistry and Molecular Biology School of Marine SciencesNingbo UniversityNingbo 315211China key laboratory of Applied Marine Biotechnology of Ministry of Education Ningbo UniversityNingbo 315211China

Our previous study found that feeding with Lactobacillus plantarum Ep-M17 could effectively affect the growth performance,immune response,and gut microbiota of Penaeus ***,high temperature and pressure during feed pelletizing is the main problem that can lead to a decrease in the activity of probiotics or cause their *** investigation needs to investigate whether inactivated Ep-M17 can exert similar effects as live ***,we evaluated the effects of inactivated *** Ep-M17 on growth performance,immune response,disease resistance,and gut microbiota in *** show that adding inactivated Ep-M17 to the feed also promoted body weight gain and increased relative immune protection in ***,histological examination revealed that the administration of inactivated Ep-M17 led to improvements in the density and distribution of microvilli in the intestines and enhancements in the abundance of B and R cells in the ***,the inactivated Ep-M17 supplementation resulted in increased activity levels of nutrient immune-related enzymes in both the shrimp hepatopancreas and ***,it stimulated the expression of Lvlec,PEN-3a,Crustin,LGBP,Lysozyme,and proPo genes in both the hepatopancreas and ***,the inactivated Ep-M17 also increased bacterial diversity in the gut of shrimp and promoted the abundance of specific flora,facilitating the host organism’s metabolism and immunity to improve the disease resistance of ***,supplementation of inactivated *** Ep-M17 in shrimp diets can exert similar effects as live *** Ep-M17 effectively improving growth performance,gut microbiota,immune response,and disease resistance in ***.

关键词： Penaeus vannamei Lactobacillus plantarum Ep-M17 inactivated probiotics immune response gut flora

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Research advance of Bacillus velezensis:bioinformatics,characteristics,and applications

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Food Science and Human Wellness 2024年第4期13卷 1756-1766页

作者： Ting Su Biao Shen Xingjuan Hu Yue Teng Peifang Weng Zufang Wu Lianliang Liu state key laboratory for managing biotic and chemical threats to the quality and safety of agro-products Key Laboratory of Animal Protein Deep Processing Technology of ZhejiangZhejiang-Malaysia Joint Research Laboratory for Agricultural Product Processing and NutritionSchool of Food and Pharmaceutical SciencesNingbo UniversityNingbo 315000China Zhoushan Customs District Zhoushan 316100China

Bacillus velezensis is a Gram-positive and spore-forming *** has potent antimicrobial properties that can be used to promote plant growth and as a pesticide by inhibiting *** has the capability to generate a diverse range of enzymes that have potential applications in various fields,such as enzyme production,fermented food,degradation of pollutants,and *** addition,*** is a promising *** possesses high bile-salt tolerance characteristics and has a high success rate of colonization in the intestinal ***,the strain can also regulate gut microbiota constitute by increasing the number of beneficial microorganisms and decreasing the number of ***,based on its special properties,including high-yield protease production and high salt-tolerance,*** shows potential for use in marine protein fermentation,opening up new avenues for the development of novel food products and bioactive *** addition,*** can shorten the fermentation time as well as improve the nutritional value and flavor of fermented *** safety of *** for food production was *** review provides valuable insights into the potential uses and benefits of ***,particularly in the context of fermented foods.

关键词： Bacillus velezensis Bioinformatics Properties Fermentation Bioactive peptides

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An integrated transcriptome and proteomic investigation of the stress responses of VBNC state Salmonella Enteritidis triggered by sodium hypochlorite

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Food Science and Human Wellness 2024年

作者： Wen Wang Wensi Wang Zhengkai Yi Jiele Ma Wenfu Hou Yingping Xiao Hua Yang Hongxun Wang Xingning Xiao state key laboratory for managing biotic and chemical threats to the quality and safety of agro-products， MOA laboratory of quality & safety Risk Assessment for agro-products (Hangzhou)， Institute of agro-Product safety and Nutrition， Zhejiang Academy of Agricultural Sciences College of Food Science and Engineering， Wuhan Polytechnic University

Viable but non-culturable （VBNC） bacteria after chlorination disinfection pose a considerable threat to the public health and environment. The current work aimed to uncover the stress adaptation mechanisms of VBNC S. Enteritidis to sodium hypochlorite. In this study， we investigated the morphology， gene expressions and proteomic profile in VBNC S. Enteritidis. It demonstrated that 109cells mL-1of bacteria could transition into the VBNC state after exposure to 50 mg L-1chlorine for 2.5 h. The VBNC state cells exhibited cellular membrane impairment， decreased size， and intracellular ATP depletion compared to the culturable cells. In the VBNC state cells， there was a significant increase in intracellular reactive oxygen species （ROS） levels and NAD+/NADH ratios. This observation suggested an imbalance in the intracellular redox status of the VBNC bacteria. Transcriptome and proteomic analysis revealed significant upregulation of the resistance-nodulation-division （RND） efflux systems （arcA， tolC， ramA）， oxidative stress response genes （soxR， trxA， grxB）， DNA repair genes （lexA， radA， mutH， mutL）， and virulence factor genes （sseA， sseL， eutS， and eutN）. Our findings indicated that it is important to formulate disinfection protocols that are specifically designed for food processing plants and healthcare facilities， focusing on implementing a more thorough disinfection method to effectively eradicate VBNC cells.

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A pair of nuclear factor Y transcription factors act as positive regulators in jasmonate signaling and disease resistance in Arabidopsis

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Journal of Integrative Plant Biology 2024年第9期66卷 2042-2057页

作者： Chuyu Lin Chenghao Lan Xiaoxiao Li Wei Xie Fucheng Lin Yan Liang Zeng Tao Ministry of Agriculture key laboratory of Molecular Biology of Crop Pathogens and Insects Institute of BiotechnologyZhejiang UniversityHangzhou 310058China state key laboratory for managing biotic and chemical Treats to the quality and safety of agro‐products Institute of BiotechnologyZhejiang UniversityHangzhou 311400China

The plant hormone jasmonate(JA)regulates plant growth and immunity by orchestrating a genome-wide transcriptional *** the resting stage,JASMONATE-ZIM DOMAIN(JAZ)proteins act as main repressors to regulate the expression of JA-responsive genes in the JA signaling ***,the mechanisms underlying de-repression of JA-responsive genes in response to JA treatment remain ***,we report two nuclear factor Y transcription factors NF-YB2 and NF-YB3(thereafter YB2 and YB3)play key roles in such de-repression in ***2 and YB3 function redundantly and positively regulate plant resistance against the necrotrophic pathogen Botrytis cinerea,which are specially required for transcriptional activation of a set of JA-responsive genes following ***,YB2 and YB3 modulated their expression through direct occupancy and interaction with histone demethylase Ref6 to remove repressive histone ***,YB2 and YB3 physically interacted with JAZ repressors and negatively modulated their abundance,which in turn attenuated the inhibition of JAZ proteins on the transcription of JA-responsive genes,thereby activating JA response and promoting disease ***,our study reveals the positive regulators of YB2 and YB3 in JA signaling by positively regulating transcription of JA-responsive genes and negatively modulating the abundance of JAZ proteins.

关键词： histone demethylase jasmonate response JAZ repressor necrotrophic resistance nuclear factor

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Peaches pulp(Prunus persica L.) mitigate type 2 diabetic mice by modulating of glucose metabolism and gut microbiota

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Food Science and Human Wellness 2024年

作者： Leyi Zhou Jianfen Ye Yingying Wei Mouayche Salma Shu Jiang Yi Chen Xingfeng Shao state key laboratory for managing biotic and chemical threats to the quality and safety of agro-products， Zhejiang-Malaysia Joint Research laboratory for Agricultural Product Processing and Nutrition， College of Food Science and Engineering， Ningbo University

Peach are a fruit with high nutritional and economic value， but their safety and suitability for diabetic patients have been questioned. This study investigated the effects and potential mechanisms of peach pulp (PP) on type 2 diabetes mellitus (T2DM) in mice induced by a high-fat diet (HFD) combined with streptozotocin (STZ). The results showed that PP alleviated hyperglycemia， hyperlipidemia， hyperuricemia， and tissue dysfunction in T2DM mice through the synergistic effect of nutrients and non-nutrient compounds. Analysis of mRNA expression levels revealed that PP improved glucose metabolism in T2DM mice by promoting glycogen synthesis and inhibiting gluconeogenesis. Furthermore， elevated levels of PP resulted in an increase in acetic acid content following a 4 weeks intervention period. Additionally， it led to the restoration of gut microbiota balance by decreasing the Firmicutes/Bacteroidota (F/B) ratio and enhancing the presence of Romboutsia， Allobaculum， Alloprevotella， and Bacteroides after an 8 weeks intervention. Ultimately， our results suggest that PP may offer advantages for individuals with diabetes.

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