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Klebsiella as an α-tocopherol source facilitating Lactobacillus plantarum fermentation in rice straw silage

文献类型： 外文期刊

作者： Zong, Cheng 1 ; Tang, Lu 4 ; Shao, Tao 1 ; Xiao, Yu 1 ; Huang, Zhongyong 1 ; Jiang, Wanqi 1 ; Zhu, Jiugang 1 ; Dong, Zhihao 1 ; Li, Mao 3 ; Liu, Qinhua 1 ;

作者机构： 1.Nanjing Agr Univ, Inst Ensiling & Proc Grass, Coll Agrograssland Sci, Nanjing 210095, Peoples R China

2.Yunnan Agr Univ, Fac Anim Sci & Technol, Yunnan Prov Key Lab Anim Nutr & Feed, Kunming 650201, Peoples R China

3.Chinese Acad Trop Agr Sci, Trop Crops Genet Resource Inst, Haikou 571101, Peoples R China

4.Chongqing Sericulture Sci & Technol Res Inst, Chongqing 400700, Peoples R China

5.Chongqing Acad Anim Sci, Chongqing 402460, Peoples R China

关键词： alpha-tocopherol; Klebsiella; Lactobacillus plantarum; rice straw silage

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：4.4； 五年影响因子：4.8 ）

ISSN： 2095-3119

年卷期： 2024 年 23 卷 12 期

页码：

收录情况： SCI

摘要： Silage serves as the indispensable diet of ruminants, the increasing mechanism of alpha-tocopherol during silage making is unclear. Rice straw lacks chlorophyll after harvesting the grain, this can eliminate the impact of tocopherols formed by the breakdown of chlorophyll. Here, we explored the alpha-tocopherol source, its influencing factor, and its relationship with dominant lactic acid bacteria in rice straw silage treated without or with different additives (sodium benzoate, Lactobacillus plantarum, cell wall degrading enzymes, the combination of L. plantarum and cell wall degrading enzymes) and vacuum times (5, 8, 11, and 14 s) after ensiling for 42 d. We found that the pathogenic Klebsiella was traced as the source of increased alpha-tocopherol in rice straw silage. The residue air in the silo, pH value, and additive variety had impacts on Klebsiella activity, which was strongly active at levels of residue air in the silo and pH that were high. As an acidic niche creator, L. plantarum was more effective than sodium benzoate in restraining Klebsiella. Despite having a low acidity tolerance, Klebsiella was still present in rice straw silage treated with L . plantarum. The relationship between Klebsiella and L . plantarum was that Klebsiella could afford alpha-tocopherol to the multiplication of L . plantarum and residue capsular polysaccharide protected Klebsiella from escaping the extinction in rice straw silage.

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