期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
短期淹水培养对水稻土中地杆菌和厌氧粘细菌丰度的影响 被引量:10
1
作者 朱超 stefan ratering +1 位作者 曲东 Sylvia Schnell 《生态学报》 CAS CSCD 北大核心 2011年第15期4251-4260,共10页
模拟水稻土淹水过程,采用Real-time PCR技术测度了不同水稻土中地杆菌(Geobacteraceae spp.)和厌氧粘细菌(Anaeromyxobacter spp.)在不同淹水时期16S rDNA拷贝数的变化,比较了地杆菌和厌氧粘细菌丰度与培养过程中微生物Fe(Ⅲ)还原的关... 模拟水稻土淹水过程,采用Real-time PCR技术测度了不同水稻土中地杆菌(Geobacteraceae spp.)和厌氧粘细菌(Anaeromyxobacter spp.)在不同淹水时期16S rDNA拷贝数的变化,比较了地杆菌和厌氧粘细菌丰度与培养过程中微生物Fe(Ⅲ)还原的关系。结果表明,在4类稻作区采集的水稻土样品中,Fe(Ⅲ)还原潜势有明显的区别,表现出由北向南逐渐降低的趋势。从淹水12 h的地杆菌和厌氧粘细菌拷贝数变化看出,采自浙江和天津的水稻土样品对淹水过程具有高度敏感性,而采自吉林和广西的水稻土样品对淹水响应不敏感。在17 d的短期淹水培养中,地杆菌丰度明显高于厌氧粘细菌,表明地杆菌对水稻土中铁还原的贡献大于厌氧粘细菌。地杆菌和厌氧粘细菌拷贝数总体上表现出在11 d时达到峰值,17 d时显著下降。吉林水稻土中地杆菌丰度在5 d时达到38.3%,与其最大铁还原速率到达时间(TVmax)为4.07 d相对应,表明地杆菌对其铁还原过程具有重要贡献。四川水稻土中地杆菌和厌氧粘细菌丰度均较低,暗示其他兼性铁还原菌对其铁还原的作用值得重视。 展开更多
关键词 水稻土 地杆菌 厌氧粘细菌 丰度 REAL-TIME PCR
下载PDF
Fructans from Agave enhance probiotic yoghurt by modulating gut microbiota on children with overweight or obesity
2
作者 Marco U.Martinez-Martinez Daniel V´azquez-Maldonado +8 位作者 stefan ratering Cesar Godínez-Hern´andez Rosa Isela Ortiz-Basurto Ruth ESoria-Guerra Bellinda Schneider Bertha I.Ju´arez-Flores Diana P.Portales-P´erez Sylvia Schnell Fidel Martinez-Gutierrez 《Food Bioscience》 SCIE 2022年第2期164-172,共9页
Overweight and obesity in children are an increasing public health problem,and the influence the gut microbiota has on it,is still discussed.The consumption of prebiotics has been studied in children with overweight a... Overweight and obesity in children are an increasing public health problem,and the influence the gut microbiota has on it,is still discussed.The consumption of prebiotics has been studied in children with overweight and obesity after an intervention with fermented milk,supplemented with different fructans like prebiotics,was carried out to obtain a healthy microbiota.Children were randomly assigned into three groups,a double-blind intervention was carried out,receiving different fermented milk products for 6 weeks,including the following supplements:Lactobacillus casei strain Shirota,L.casei strain Shirota with inulin or L.casei strain Shirota with fructans from Agave salmiana Otto ex Salm-Dyck.DNA was extracted from stool samples and the differential abundance of ASV was monitored by high throughput 16S rRNA gene sequencing.A synbiotic with fructans from A.salmiana stimulated the abundance and diversity of the microbiota,specifically on genera Faecalibacterium and Holdemanella,thus,leading to a healthier gut microbiota,which led to obtaining the best anthropometric changes in synbiotic groups.Synbiotic intervention may provide health benefits to children with overweight or obesity by increasing the richness of the gut microbiota and stimulate beneficial bacteria.Nevertheless,more studies are needed to get a better understanding of the mechanisms of action. 展开更多
关键词 Beta diversity Gut microbiota Mexico Prebiotic Probiotic
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部