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Differences in Microbial Community and Metabolites in Litter Layer of Plantation and Original Korean Pine Forests in North Temperate Zone

机译：北温带植物凋落物和韩国松林凋落物凋落物中微生物群落和代谢产物的差异

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摘要

In order to explore the relationship between microbial diversity and metabolites in the litter layer of northern temperate forests, the microbial community structure and metabolite species in the litter layer of an original Korean pine forest and Korean pine plantation of northern temperate climate were determined on the basis of high-throughput sequencing and metabonomic techniques. The results showed that there were 698 bacterial genera and 363 fungal genera in the litter samples in the original Korean pine forest. Linear discriminant effect size (LEfSe) analysis showed that there were 35 indicator bacterial species and 19 indicator fungal species. In the litter samples of the Korean pine plantation, there were 622 bacterial genera and 343 fungal genera. Additionally, LEfSe analysis showed that there were 18 indicator bacterial species and 5 indicator fungal species. The litter of the two forest types contained 285 kinds of organic compounds, among which 16 different metabolites were screened, including 6 kinds of organic acids, 5 kinds of amino acids, 2 kinds of sugars, 2 kinds of sugar alcohols, and 1 kind of lipid. Latescibacteria, Rokubacteria, and Olpidiomycota are unique to the original Korean pine forest. They can catalyze the degradation rate of litter and decompose cellulose and chitin, respectively. Subgroup 6 was abundant in the lower litter layer. Subgroup 6 can grow with carbon compounds as substrate. It was clear that the microbial diversity of the litter layer in the original Korean pine forest was higher than that of the Korean pine plantation. Moreover, whether original forest or plantation forest, the lower-litter layer microbial diversity was higher than that in the middle-litter layer. CCA showed that the main metabolites were related to Chitinophagaceae_uncultured were saccharopine. The main metabolites associated with Mortierella and Polyscytalum were myo-inositol. At the same time, analysis of the difference between the litter layer of the original Korean pine forest and the Korean pine plantation also provides a theoretical basis for their participation in the element cycles of forest ecosystems.
机译：为了探讨北温带森林垃圾层中微生物多样性和代谢物之间的关系，基于韩国松树林和朝鲜温度气候韩国松树植物垃圾层中的微生物群落结构和代谢产物。高通量测序与代谢常规技术。结果表明，原始韩国松林垃圾样品中有698种细菌属和363个真菌属。线性判别效应尺寸（lefse）分析表明，有35种指示剂细菌物种和19个指示器真菌物种。在韩国松树种植园的垃圾样本中，有622种细菌属和343个真菌属。此外，lefse分析表明，有18个指示剂细菌种类和5种指示器真菌物种。两种森林类型的垃圾含有285种有机化合物，其中筛选了16种不同的代谢物，其中包含6种有机酸，5种氨基酸，2种糖，2种糖醇，1种脂质。 Latescabacteria，Rokubacteria和Olpidiomycota对原始韩国松树林是独一无二的。它们可以分别催化凋落物的降解率和分解纤维素和甲壳素。亚组6在下垃圾层中丰富。亚组6可以用碳化合物作为基质生长。很明显，原始韩国松树林中垃圾层的微生物多样性高于韩国松树园的微生物层。此外，无论是原始森林还是种植园，较低凋落层微生物分集高于中窝层。 CCA表明，主要代谢物与曲面曲底泻水肿有关是糖粉。与黄昏菌和多囊肿相关的主要代谢产物是肌醇。同时，分析原始韩国松树林和韩国松树种植园的垃圾层之间的差异也为他们参与森林生态系统的元素周期提供了理论依据。

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